LCD Display Oval Gear High Viscosity Flow Meter

Q: 6. Gear Flow meter for small flow

A Cylinder gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃). Cylinder Gear flow meter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volumetric flow. With the flow of the medium, the gears mesh and rotate. Under the action of fluid flow. Measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease, and other high-viscosity media. It can measure the viscosity of Fluid up to 10000Pa.s.

Posted on November 30, 2020 by KimGuo11

High viscosity flow meter is the flow meter measures the flow rate of viscous fluid flow. LCD display Oval Gear High Viscosity Flow Meter is an ideal for measuring diesel gasoline and other media.

The measurement of the oval gear flowmeter has nothing to do with the flow state of the fluid. The higher the viscosity of the medium, the smaller the leakage from the gear and the metering gap. Therefore, the higher the viscosity, the more advantageous it is for measurement.
Measurable medium: fuel, diesel, gasoline, heat transfer oil, hydraulic oil, kerosene, tar, petroleum, crude oil, asphalt, resin and other liquids. Especially suitable for the measurement of high viscosity liquids.

Sino-Inst offers a variety of Oval Gear Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.

RFQ

Volumetric Flow Meters

High viscosity liquids

High-viscosity liquid means that the liquid is viscous and thick, which is different from general liquids and non-Newtonian fluids (mud, pulp). The activity is slow and it is very difficult to filter by simple methods.

What’s more, in addition to some dust, the liquid also contains colloidal particles that are not completely dissolved.

For example: solutions such as rubber, paraffin, cellulose acetate, viscose, polyacrylonitrile, paint and animal glue.

Read more about: Liquid Flow Meters Guide

Oval Gear High Viscosity Flow Meter

The oval gear flowmeter is particularly suitable for measuring high viscosity media. And it is not sensitive to changes in the viscosity of the liquid being measured.

The measurement of the oval gear flowmeter has nothing to do with the flow state of the fluid. The higher the viscosity of the medium, the smaller the leakage from the gear and the metering gap. Therefore, the greater the viscosity of the measured medium, the smaller the leakage error, which is more beneficial to the measurement.

Measurable medium:
Fuel, diesel, gasoline, heat transfer oil, hydraulic oil, kerosene, tar, petroleum, crude oil, asphalt, resin and other liquids. Especially suitable for the measurement of high viscosity liquids.

Model	LC-NA Cast Iron with high viscosity type	LC-NE Cast steel with high viscosity type
Nominal Pressure Mpa	1.6	6.4
Temperature Range ℃	-10~+80; +100~+180
Accuracy	0.5 ;0.2
Nominal Diameter (mm)	Flow range(m3/h)
	Viscosity
	200~2000 mPa·s
10	0.02-0.2
15	0.075-0.75
20	0.15-1.5
25	0.3-3
40	0.75-7.5
50	1.2-12
80	3-30
100	5-50
150	9.5-95
200	17.4-174

If you need to measure higher viscosity liquids. Please contact our sales engineer.

Extended reading: Flat Pressure Sensor for High Viscosity Fluids

Oval gear flowmeter display mode selection:

The oval gear flowmeter is a mechanical instrument, and the display can be mechanical or liquid crystal display. Make a reasonable choice according to the different requirements of users.

Of course, the oval gear flow transmitter can also be combined with the secondary instrument to form an oval gear flow meter.

Flow meters with LCD displays now occupy the vast majority of the flow meter market. This is because the LCD display can display instantaneous flow, cumulative flow and other information at the same time. Some flow meters with temperature and pressure compensation can even display temperature and pressure information. Such as vortex flowmeter.

How to choose a high viscosity flow meter?

You may often encounter some high viscosity flowmeter selection problems. For example: What flowmeter is used for viscosity above 10000?

Under normal circumstances, when we encounter high-viscosity media (such as glue, eye drops, asphalt, etc.), the first thing that comes to mind is that impeller-type flowmeters are not suitable. A positive displacement flow meter can be used. The positive displacement flow meter includes a waist wheel, an oval gear, etc.

Are they all suitable?

Below we will introduce several flow meters suitable for measuring high viscosity media:

It is well known that the oval gear flowmeter is particularly suitable for the flow measurement of high viscosity media such as heavy oil, polyvinyl alcohol, and resin.

The oval gear High Viscosity Flow Meter has high measurement accuracy and is suitable for the measurement of the flow of high-viscosity media (generally the viscosity of the measured liquid is 2-3000Mpa.s).

But it is not suitable for fluids containing solid particles. If the measured liquid medium contains gas, it will also cause measurement errors.

Usually, the accuracy of the oval gear flowmeter can reach 0.5 grade, the highest is 0.2 grade, which is a relatively accurate flow meter.

However, if the flow of the measured medium is too small when in use, the leakage error of the oval gear flowmeter will be prominent, and sufficient measurement accuracy cannot be guaranteed.

More about: Pointer Type Oval Gear Flow Meter

The clamp-on ultrasonic flowmeter is not in contact with the medium and is based on the principle of ultrasonic flowmeter. In this way, the ultrasonic flowmeter is basically not affected by conductivity, pressure, temperature and viscosity.

Generally, high viscosity media can be measured, such as mud, etc.

And easy to install.

More about: Utrasonic flow meter

Split electromagnetic flowmeter can also measure high-viscosity fluid, based on the principle of electromagnetic flowmeter and other factors. In addition to measuring the flow of general conductive liquids, the split electromagnetic flowmeter can also measure the volumetric flow of liquid-solid two-phase flow, high-viscosity liquid flow, and salt, strong acid, and strong alkali liquids. This is true in theory, but it depends on the specific site.

More about: Electromagnetic flow meter

The target flowmeter was used for industrial flow detection at the end of sixty years, mainly used to solve the flow measurement of high viscosity, low Reynolds number fluid.

High-viscosity liquid target flow meters can now be used to measure heavy oil, residual oil metering, asphalt, liquid paraffin and other media.

More about: Target flow meter

Coriolis mass flow meters are the most accurate and repeatable products among flow meters. The advanced Coriolis force sensor is used. A single Coriolis mass flow meter can directly measure mass flow, medium density and temperature. Allow users to more directly understand the running process of fluid.

The mass flow meter can measure a wide range of fluids, including high-viscosity liquids, slurries containing solids, liquids containing trace gases, and medium and high-pressure gases with sufficient density.

But the cost of mass flow meters is high.

More about: Coriolis mass flow meters

If you still do not know how to choose a suitable high viscosity flow meter, you can contact our sales engineer. We will recommend a suitable high viscosity flow measurement solution for you.

Extended reading: Cylinder Gear flow meter for micro flow measurement.

Read more about: Coriolis meter for High viscosity liquid

A Cylinder gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃).

Cylinder Gear flow meter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volumetric flow. With the flow of the medium, the gears mesh and rotate. Under the action of fluid flow. Measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease, and other high-viscosity media. It can measure the viscosity of Fluid up to 10000Pa.s.

How to choose a high viscosity flow meter?

When choosing a high viscosity flow meter, it is important to consider the type of fluid being measured, the required accuracy of measurement, the operating environment, and the desired features.

Sino-Inst offers a wide variety of high viscosity flow meters to meet these needs.

For example, when we select a high viscosity flow meter for you. We will generally confirm with you first:

Types of media
Medium viscosity
Pipe diameter
Flow range
Temperature and pressure
Installation dimensions
What signal output is required.
Material requirements, etc.

For fluids with a high viscosity , such as oil or molasses, a positive displacement flow meter is often the best choice. These meters work by measuring the amount of fluid that is displaced as it flows through the meter. This type of meter is very accurate, but can be expensive.

Sino-Inst also offers a variety of other high viscosity flow meters, including Coriolis flow meters and mass flow meters. These meters are less common, but may be the best choice for specific applications.

Extended reading: Hydraulic oil flow measurement solutions.

Measuring principle of Oval Gear High Viscosity Flow Meter

When the measured liquid enters the oval gear flowmeter through the pipeline. The pressure difference generated at the inlet and outlet pushes a pair of gears to continuously rotate. The liquid measured by the lunar cavity is continuously delivered to the outlet. The product of the number of revolutions of the elliptical gear and four times the displacement per time is the total amount of the measured liquid flow.

Therefore, it is not difficult for us to find from the measurement principle of the oval gear flowmeter that it relies on the pressure head of the measured medium to push the oval gear to rotate for measurement, and has nothing to do with the fluid flow state.

For fluids with solid particles, oval gear flowmeters are not suitable. Because the solid particles will jam the gears, the flow cannot be measured.

It should also be noted that the use of oval gear flowmeters is not recommended for media with gas in the liquid. Its measurement error will be quite large.

When we use oval gear flow meters to measure liquids with high viscosity, there is less leakage from the gap between the gear and the metering.

Therefore, the greater the viscosity of the liquid being measured, the smaller the leakage error, and the more beneficial it is for the measurement, the higher the measurement accuracy.
It can be said that the oval gear flowmeter is the best choice for measuring the flow of high-viscosity liquids.

Extended reading: Featured Hydraulic Flow Meters For Sale

Installation and use of Oval Gear High Viscosity Flow Meter

The oval gear flowmeter should be equipped with a filter, and the arrows on the two shells point to the same flow direction.
When the measured liquid contains gas, a gas separator should be installed before the flowmeter.
Regardless of whether the pipeline is installed vertically or horizontally, the oval gear shaft in the flowmeter is installed in a horizontal position. (That is, the dial should be perpendicular to the ground).
When the oval gear flowmeter is installed correctly, if it is difficult to see the reading, the counter can be turned 180° or 90°.
Before installing the new flowmeter, use a bamboo stick to push the gear from the exit several times. If it is found to be immobile, it can be soaked with gasoline. (Avoid memory deposits after factory inspection)
The throttle valve should be installed at the inlet of the flowmeter, and the opening/closing valve should be installed at the outlet. When using the opening/closing valve, it should be pneumatically operated slowly and not suddenly open.
It is strictly forbidden to use line sweeping steam to pass through the flow meter.
In continuous use, the flowmeter must be equipped with a bypass pipe.
Before installing the oval gear flowmeter, the pipeline must be flushed. When flushing, use a straight pipe section (instead of the oval flowmeter position) to prevent welding slag and debris from entering the flowmeter.
It is strictly forbidden to check the flowmeter composed of cast iron and cast steel with water.
When the flowmeter is in use, the flow rate shall not exceed the technical requirements. It is better for the flowmeter to work at 50~80% of the maximum flow.
If the measured liquid is chemically corrosive, a stainless steel flow meter or Ocr15Ni12MO2Ti flow meter must be used.
The installation method of oval gear flowmeter is as shown in the figure.

Pointer Type Oval Gear Flow Meter

Posted on November 26, 2020 by KimGuo11

Oval gear flow meter is one of the typical positive displacement flow meters. Measure the flow of liquid filling the pipeline under a certain pressure.

Oval gear flow meter is a pointer display type positive displacement flowmeter. The word wheel accumulates counting, and can be equipped with a zero return device. Oval gear flowmeters are widely used in liquid flow control in various industrial fields. Applicable to various types of liquid measurement, such as crude oil, diesel, gasoline, etc. Choose different manufacturing materials, such as crude oil, diesel, gasoline, etc. can be measured.

Sino-Inst offers a variety of Oval Gear Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote

Volumetric Flow Meters

Features of Pointer Type Oval Gear Flow Meter

High measurement accuracy: 0.2 and 0.5;
The mechanism is simple, sturdy and reliable.
Particularly suitable for measuring medium with high viscosity
Easy to install. There is no need for straight pipe sections before and after the flowmeter, and there is no need to install straight pipe sections.
Cast iron oval gear flowmeter, widely used in various oil products and measurement of non-corrosive liquid medium for cast iron
Cast steel oval gear flow meter for measuring high pressure and low corrosive medium
Stainless steel oval gear flowmeter, widely used in corrosive liquid media, such as acid, alkali, salt
In order to prevent the gear of the flowmeter from being jammed by impurities, a filter must be installed upstream of the flowmeter.
Explosion-proof grade: ExiaIICT6

Specifications of Pointer Type Oval Gear Flow Meter

Diameter(mm)	Flange connection: cast iron, cast steel, SS304, SS316L DN10~DN200 More than DN200 can be customized
Diameter(mm)	Threaded connection: cast iron, cast steel, stainless steel DN10~DN50
Connection type	Flange (Default), thread and clamp(Need to customize)
Medium viscosity	0~200mPa.s(Normal type), 200~2000mPa.s(High-viscosity type), 2000~5000mPa.s(Need to customize)
Accuracy level	±0.5%R (±0.2%R Need to customize)
Ratio of measuring range	1:5;1:10
Instrument material	Body: cast iron, cast steel, stainless steel Gear: cast iron, stainless steel
Flowmeter jacket	None(Default), flowmeter with jacket(Suitable to maintain the temperature of the medium, Need to customize)
Temperature level	Environment temperature:-20ºC~+60ºC; Relative humidity:5%~90%. Medium temperature:-20ºC~+80ºC(Normal type); High-temperature LCD type:+100~150ºC (need to be customized) High-temperature mechanical pointer type:+100ºC~+200ºC(need to be customized)
Pressure level	Cast iron:1.6MPa, Cast steel and Stainless steel:1.6MPa(default), 2.5MPa,4.0MPa, 6.3MPa (Can be customized according to different diameter)
Working power supply	No power supply required(Mechanical pointer type, no signal output), External power supply: 12/24VDC ±15%,(suitable for 4~20mA; Pulse, RS485, LCD display)
Signal output	None, Pulse,4~20mA, RS485
Display	Mechanical pointer display, LCD display, No display only pulse signal output
Electrical interface	Aviation plug
Protection level	IP65
Explosion-proof level	ExdIIBT4

Name	Model	The material of the body	Gear materials
Cast Iron	LC-A	Cast iron	Cast iron
Cast Steel	LC-E	Cast steel	Cast iron
Cast Light	LC-QA	Cast iron	Aluminum alloy
Cast iron high temperature type	LC-TA	Cast iron	Cast iron
Cast steel high temperature type	LC-TE	Cast steel	Cast iron
Cast steel high viscosity type	LC-NA	Cast iron	Cast iron
Cast steel high viscosity type	LC-NE	Cast steel	Cast iron
Stainless steel	LC-B	Stainless steel	Stainless steel
Food stainless steel	SPB	Stainless steel	Stainless steel
13 Type	LC-13	Various materials	Various materials

Extended reading: Stainless steel flow meters|304-316 optional

Oval Gear Flow Meter Flow Range

Nominal Diameter (mm)	Flow range(m3/h)
	Viscosity
	0.6~2mPa·s	2~8mPa·s	8~200mPa·s	Chemical liquids 0.6-200mpa.s
10		0.08~0.4	0.04~0.4	0.08~0.4
15		0.3~1.5	0.15~1.5	0.3~1.5
20	0.75~3	0.4~3	0.3~3	0.6~3
25	1.5~6	0.8~6	0.6~6	1.2~6
40	3~15	2~15	1.5~15	2.4~12
50	4.8~24	3~24	2.4~24	3.8~19
65	8~40	5~40	4~40	8~30
80	12~60	8~60	6~60
100	20~100	13~100	10~100
150	38~190	25~190	19~190
200	68~340	45~340	34~340

Note: Diameter and flow flange of Oval meters for class0.5

Pointer Type Oval Gear Flow Meter Applications

LC series oval gear flowmeter is equipped with on-site pointer display and word wheel cumulative counting device, which can directly display the cumulative flow of liquid flowing through the pipeline. For different liquids (acid, alkali, salt, organic solution, etc.), the flowmeter can be made of different materials (cast iron, cast steel, stainless steel, etc.). It is suitable for flow measurement in industrial sectors such as petroleum, chemical industry, transportation, commerce, food, medicine and health.

The LC-A cast iron oval gear flowmeter is widely used in the measurement of various oil products and non-corrosive liquid media on cast iron.
The LC-E cast steel oval gear flowmeter is used for the measurement of high pressure and low corrosive media.
The LC-Q cast iron oval gear flowmeter, whose rotor is made of aluminum, is suitable for the measurement of low-viscosity, low-corrosion (such as gasoline, etc.) media.
The LC-B stainless steel oval gear flowmeter is widely used in the measurement of liquid media with strong corrosive liquids, such as acids, alkalis, salts and organic compounds.
The LC-L aluminum alloy oval gear flowmeter is a light super flowmeter, which is widely used in the measurement of low corrosive liquid media, such as water and other liquids.

Structure and working principle of Oval Gear Flow Meter

The oval gear flowmeter is composed of a metering box and a pair of elliptical gears installed in the metering box, and the upper and lower cover plates form a sealed crescent-shaped cavity (due to the rotation of the gear, it is not sealed) as the calculation unit of a displacement .

The flow meter is mainly composed of a housing, a counter, an elliptical gear, and a coupling (magnetic coupling and axial coupling), etc. As shown in the figure.

1.Counter 2. Transmitter

3. Accuracy adjuster (used above DN50)

4. Sealed coupling

5. Front cover 6. Cover plate

7. Oval gear 8. Shell

9. Rear cover

When the measured liquid enters the flowmeter through the pipeline, the pressure difference generated at the inlet and outlet pushes a pair of gears to continuously rotate, and the liquid measured by the crescent-shaped cavity is continuously transported to the outlet. The product of four times the secondary displacement is the total amount of the measured liquid flow.

The elliptical gear generates a torque to make it rotate under the action of the pressure difference △p of the measured medium.

The rotor 1 and the rotor 2 are alternately driven by one to rotate the other. There are two magnets on each rotor as signal generating elements. There is a magnetic signal detecting element at the center of the two axes at the bottom of the cavity. Whenever the magnet turns to the detecting element, the sensor counts as a pulse.

Each pulse corresponds to a certain amount of medium discharge F, F=XXml/p, so the volume flow Qm per unit time can be obtained: Qm=F*H, F is the amount of medium removed by each pulse; H pulse per unit time number.

Oval gear flow meter price

Sino-Inst is a manufacturer of oval gear flow meters. We try our best to provide customers with high-quality flow meters.
The price of elliptical flowmeter is relatively moderate.
If you need a quote for oval gear flow meters. Please contact our sales engineer.
To confirm the price of elliptical flowmeter, the following information needs to be confirmed:

Name, model, specification, material.
Medium temperature, pressure, flow range.
Medium viscosity or name
Are there any special requirements, such as explosion-proof.

The following is the reference price of one of our oval gear flow meters:
LC-A100.2/Z
Cast iron material. DN100 national standard flange connection. Temperature: -20-80℃. Pressure: 1.6mpa. Measuring medium: diesel. Flow range: 15-100m3/h. Accuracy: 0.5%. The on-site pointer shows the cumulative flow, with zero return function. FOB price: USD 800-900.00

More Liquid Flow Meters:

**Low temperature Turbine Flowmeter-Liquid Nitrogen Flow Meter**

FAQ

What is oval gear flow meter?

Oval gear flow meters (also known as displacement flow meters, gear flow meters) are a type of positive displacement flow meters, which are the most accurate type of flow meters.
The oval gear flowmeter uses a mechanical measuring element to continuously divide the fluid into a single known volume part, and measures the total flow volume according to the number of times that the metering chamber is filled and discharged with the volume part of the fluid successively and repeatedly.
The Oval gear flow meter is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, resin and other high viscosity media.

What are the different types of flow meters?

For different working principle, We offer different types of flow meters, like:
Differential Pressure Flow Meters
Orifice Plate
Venturi Tube
Flow Nozzles
The Sonic Nozzle – Critical (Choked) Flow Nozzle
Calorimetric Flowmeter
Ultrasonic Doppler Flowmeter
Positive Displacement Flowmeter
Variable Area Flowmeter or Rotameter
Velocity Flowmeters
Pitot Tubes
Electromagnetic Flowmeter
Turbine Flowmeter
Vortex Flow Meter
Thermal Flowmeter
Coriolis Flowmeter
Mass Flowmeters
Open Channel Flowmeters

You may like:

Sino-Inst, Manufacuturer for Oval Gear Flow Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.

Sino-Inst’s Oval Gear Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

KimGuo11

drurylandetheatre.com

Volumetric Flow Meters

Posted on November 26, 2020 by KimGuo11

What is volumetric flow meter?

A volumetric flow meter is an instrument that can measure the volume of fluid passing through the measurement location within a set period of time.

A positive displacement flowmeter as a mechanical flow meter is a common type of Volumetric Flow Meter. It can measure the volume flow of high viscosity and corrosive fluids.

High measurement accuracy;
The installation pipeline conditions have no influence on the measurement accuracy;
Can be used for high-viscosity liquids;
Wide range;
The direct-reading meter can directly obtain the cumulative and total amount without external energy.
Clear and clear, easy to operate.

Sino-Inst offers a variety of Oval Gear Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.

More Flow Meters

Featured Volumetric Flow Meters

**High Temperature Oval Gear Flow Meter – Heating oil**

**Thermal insulation Oval Gear flow meter**

**Clamp Filling Oval Gear Positive Displacement Flow Meter**

Guess you like: What is Reynolds number?

The volumetric flow rate studies the volume of fluid passing through a specified cross-section per unit time. It is a measure of the 3-dimensional space occupied by the gas flowing through the instrument under the measured pressure and temperature conditions. The volume flow rate can also be referred to as the actual flow rate.

The volumetric flow rate is the ratio of fluid volume to time. The unit in the International System of Units is m³/h. The measured value can be obtained by a volumetric flow rate meter.

Therefore, a volumetric flow meter is an instrument that can directly or indirectly measure the volume of fluid passing through the measurement location within a set period of time.

Extended reading: Fuel Flow Meter for Boat-Selection & Application

Mass flow refers to the mass of fluid passing through the effective cross-section of a closed pipe or open groove in a unit time. Unit: kg/h, kg/s. Corresponding to volume flow (volume of fluid passing through unit time), it can be expressed as the product of volume flow and fluid density.

Extended reading: Gas mass flow controller working principle

The mass flow rate is defined as the mass of the fluid flowing through a unit cross-sectional area in a unit time, that is, the mass flow borne by the unit cross-sectional area. It is usually expressed by G, and the unit is Kg/(m2*s).

Calculation of mass flow rate: G=W/A,
Where W is the mass flow rate in kg/s;
A is the circulation area, the unit is m2.

Extended reading: Mass Flow Rate Units Converter

Comparing Mass Flow Rate to Volumetric Flow Rate

The mass flow rate is directly measured by a mass flow meter, without intermediate parameter conversion. Measure the number of molecules passing through the instrument, regardless of how much space these molecules occupy. Pressure and temperature have no effect on it.

The volumetric flow measures the three-dimensional space occupied by the gas flowing through the instrument under the pressure and temperature conditions to be measured. The volumetric flowmeter does not directly measure the volume but undergoes intermediate parameter conversion.

For example, the mass flow rate and volume flow rate of the gas. Gas is compressible, and when the pressure or temperature changes, the volume flow will change greatly.

Converter Tool: Volumetric Flow Rate & Pipe Diameter to Flow Speed Calculator

Mass Flow Meters

The mass flow meter directly measures the mass flow of the medium passing through the flow meter. It can also measure the density of the medium and indirectly measure the temperature of the medium.

Since the transmitter is an intelligent instrument with a single-chip microcomputer as the core, more than a dozen parameters can be derived for users to use based on the above three basic quantities.

The mass flow meter has flexible configuration, powerful functions and high performance-price ratio. It is a new generation flow meter

**Read more about: Coriolis Mass Flowmeter Working Principle**

Volumetric Flow Meters

A volumetric flow meter is an instrument that can directly or indirectly measure the volume of a substance passing through a specific location within a set period of time.

In fact, many volumetric flow meters measure the velocity of the flow instead of directly measuring the volume flow rate. By multiplying the flow rate by the cross-sectional area of the pipe or pipe where the volume flow meter is installed, that is, Q = v·A, the flow rate measurement value can be converted into a volume flow rate.

Volume flow meters can provide instantaneous analog, digital or pulse output of volume flow.

There are many different units used to measure volumetric flow. The type of substance, the size of the cross-sectional area, the flow rate, and the geographic area will all determine the most suitable volume and time unit for a particular flow measurement. The popular volumetric flow rate units are liters or gallons per second, minutes or hours (L/s, L/m, L/h, gps, gpm, gph).

Extended reading: Totalizing flow meter water

Types of Volumetric Flow Meters

Common Volumetric flow meters are as follows:

Positive displacement meters
Electromagnetic Flowmeter
Ultrasonic flowmeter
Turbine flow meters
Orifice plates
Venturis
Vortex meters
Pitot tubes
Rotometers etc.

Examples of Mass Flow Meters

Generally speaking, mass flow meters are mainly divided into:

Thermal mass flow meter;
Differential pressure mass flow meter;
Coriolis mass flow meter;

Extended Reading: Collection of Industrial Insertion Flowmeter Type

Extended reading:
What is the K-factor in a flow meter?
Cryogenic Flow Meters|Liquid Nitrogen-Liquid Oxygen-LNG fluids

Volumetric flow meter working principle

The positive displacement flow meter is a flow meter that uses mechanical measuring elements to continuously divide the fluid into a single known volume, and repeatedly fill and discharge the volume of fluid to accumulate the total amount of fluid.

Volumetric flow measurement uses a fixed small volume to repeatedly measure the volume of fluid passing through the flowmeter.

Therefore, there must be a standard volume of space inside the positive displacement flowmeter, which is usually called the “metering space” or “metering chamber” of the positive displacement flowmeter.

This space is formed by the inner wall of the instrument case and the rotating parts of the flowmeter.

The working principle of a positive displacement flow meter is: fluid passing through the flow meter will produce a certain pressure difference between the inlet and outlet of the flow meter.

The rotating part of the flowmeter (referred to as the rotor) rotates under the action of this pressure difference, and discharges the fluid from the inlet to the outlet.

In this process, the fluid fills the “metering space” of the flowmeter again and again, and then is continuously sent to the outlet.

Under the conditions of a given flow meter, the volume of the metering space is determined. As long as the number of rotations of the rotor is measured, the cumulative value of the volume of fluid passing through the flow meter can be obtained. Flow rate of viscous fluids such as oils, condensate, resin and liquid food.

For the flow of high-viscosity media, other flowmeters are difficult to measure, but positive displacement flowmeters can accurately measure with an accuracy of ±0.2%.

Positive Displacement Flow meter Technology

What is volume flow rate?

Volume flow refers to the flow in which the quantity of fluid is expressed in volume. The volume flow is expressed by the formula: qv=V/t=u×A, in the formula: qv is the volume flow, m3/s; V is the unit flow volume, m3; t is the unit time, s; u is the average flow velocity in the pipe, m /s; A is the cross-sectional area of the pipe, m2.

Among the commonly used flowmeters, such as orifice plate, turbine flowmeter, vortex flowmeter, electromagnetic flowmeter, rotameter, ultrasonic flowmeter and oval gear flowmeter, the flow measurement value is the volume flow of the fluid.

What is mass flow rate?

Mass flow refers to the flow in which the quantity of fluid is expressed in terms of mass. The mass flow can be expressed by the formula: qm=m/t=ρ×u×A, in the formula qm is the mass flow, kg/s; m is the unit fluid mass, kg; ρ is the fluid density, kg/m3; t is the unit time , s; u is the average flow velocity in the pipe, m/s; A is the cross-sectional area of the pipe, m2.

Understanding the relationship between Pipe Diameter Vs Pressure Vs Flow may help you calculate mass or volume flow.

How to convert Mass Flow Rate & Volumetric Flow Rate

If the mass flow of the flow is known and needs to be converted into volume flow, the following formula can be used: qv=qm/ρ. In the formula, qv is volume flow, m3/s. qm is mass flow, kg/s. ρ is fluid Density, kg/m3.
If the volume flow rate of the fluid is known, it needs to be converted into a mass flow rate, which can be done with the formula: qm=qv×ρ.

We provide you with some calculation tools for Mass Flow Rate & Volumetric Flow Rate conversion:

DP Flow Meter Output Calculator	Flow Meter 4-20mA Current Output Calculator	Flow Velocity & Pipe Diameter to Volumetric Flow Rate Calculator
Mass Flow & Density to Volume Flow Calculator	Mass Flow Rate Unit Converter	Volume Flow Rate Converter
Volume Flow & Density to Mass Flow Calculator	Volumetric Flow Rate & Pipe Diameter to Flow Speed Calculator

More: Mass Flow Rate vs Volumetric Flow Rate

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Frequently
Asked
Questions

Help Center

Mass flowmeter is a direct measurement type, such as Coriolis (Coriolis) mass flowmeter, thermal flowmeter. In terms of electronic control, there are mainly phase difference type and dedicated line (membrane) type.

Volumetric flow meters are of the indirect measurement type. In terms of electronic control, there are mainly differential pressure type, Karman scroll type, electromagnetic induction type, volumetric type and so on. It is converted into mass flow through pressure sensor, temperature sensor, measuring pressure and temperature.

More about: Mass Flow Meter Types

Flow is the ratio of the amount of fluid in a cross-section of a pipe to the time it takes for that flow to pass through the cross-section. Flow is divided into volume flow and mass flow.

Volume flow refers to a unit when measuring flow, which refers to the volume of inflow (out, through) a certain liquid per unit time. For example: cubic meters per hour; liters per hour; cubic meters per minute, etc.

Volume flow calculation formula: Vs=3.14ud*d/4
In the formula: Vs volume flow rate, U flow rate, d pipe inner diameter.
Volume flow is the volume of flow through the flow cross section per unit time, referred to as flow, expressed by Q.

Read More: Pipe Diameter vs Pressure vs Flow

Extended Reading: How to Measure Volume of Liquid

If you let me answer this question. I would like to divide flow meters into two categories: mass flow meters and volumetric flow meters.

Of course, it can also be divided according to the measurement medium. There are two types of flow meters for measuring gas and measuring liquid.

Perhaps, we can also divide into closed pipeline measurement and open channel measurement according to the situation of the pipeline.

Finally, we may also be able to divide into contact and non-contact measurements according to the contact situation of the medium.

If the flowmeter is divided into 5 categories. Then the five commonly used flowmeters are:

Electromagnetic flowmeter
Differential pressure flowmeter
Turbine flowmeter
Ultrasonic flowmeter
Volumetric flowmeter (PD)

Extended reading: non contact flow meter

Read more about: Flow Meter Selection Guide

Liquid and Gas Flow Measurement Solutions

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Micro flow meters for low flow liquids

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Clamp on Flow Meters for Liquid Pipes

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Chemical Flow Meter Guide

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Cryogenic Flow Meters for Sale

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Sanitary Flow Meters for Sale

Common sanitary flow meters are sanitary magnetic flow meters and sanitary turbine flow meters. Composed of 304/316 stainless steel. A Sanitary flowmeter with Tri-Clamp fittings…

Sino-Inst, Manufacuturer for Volumetric Flow Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.

Sino-Inst’s Volumetric Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

KimGuo11

drurylandetheatre.com

Absolute Pressure-Gauge Pressure Calculator

Posted on November 20, 2020 by KimGuo11

Document

Absolute – Barometric to Gauge Pressure Calculator

Absolute & Barometric Pressure Values
P_abs

P_baro

Gauge Pressure (P_abs - P_baro = P_gauge)
P_gauge

User Guide

This tool will calculate the gauge pressure by subtracting the barometric pressure from the absolute referenced pressure reading you entered and convert any combination of pressure units for each pressure value.

P_abs – Absolute Pressure

Enter the absolute referenced pressure and select the associated pressure units directly underneath.

P_baro – Barometric Pressure

Enter the barometric pressure and select the associated pressure units directly underneath. The barometric pressure should be measured at the same location and time as the absolute referenced pressure was measured.

P_gauge – Gauge Pressure

The gauge referenced pressure is calculated by subtracting the barometric pressure from the absolute referenced pressure, and will appear once the required pressure units are selected directly underneath.

KimGuo11

drurylandetheatre.com

Liquid Turbine Flow Meters

Posted on November 18, 2020 by KimGuo11

Liquid Turbine Flow Meter is one of the most ideal flow meters for measuring liquids. Liquid Turbine Flow Meter is suitable for measuring low-viscosity media, such as water, diesel, gasoline, etc.

The Liquid Turbine flow sensor can measure the instantaneous flow rate and the total cumulative volume of the liquid, and can also quantitatively control the liquid. Turbine flow meters are velocity flow meters. The principle is to use the relationship between the rotational angular velocity of the impeller placed in the liquid and the liquid flow rate. Calculate the size of the liquid flow by measuring the speed of the impeller. The flow can be displayed on-site and can also be matched with the corresponding flow totalizer.

Sino-Inst offers a variety of Liquid Turbine flow meters for Liquid flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote

Turbine Flow Meters

Featured Liquid Turbine Flow Meters

Types of Turbine Flow Meter

Different measuring medium

According to different measuring media, turbine flow meters can be divided into gas turbine flow meters and liquid turbine flow meters.

Gas turbine flowmeters are significantly different from liquid turbine flowmeters in structure.

You can learn more about gas turbine flow meters.

Different output signal

According to the different output signals, we divide the liquid turbine flowmeter into the following 4 categories.

A. On-site display type

The intelligent flowmeter is a new type of flowmeter display instrument designed with advanced single-chip microcomputer technology, and it is matched with the flow sensor (such as turbine, vortex) with pulse signal output.

Can display instantaneous flow and cumulative total.
Cumulative flow: 8 digits, 3 significant digits after the decimal point.
Instantaneous flow: six digits, can show the change per liter.
Display accuracy: ±1 display unit.
Signal output: pulse output: 1~3000Hz
External power supply +12~+24VDC
Current output: 4~20mA
External +24VDC power supply (two-wire system) built-in 2 3V lithium batteries in parallel for power supply.
When the voltage is lower than 2.7V, there will be an undervoltage indication, explosion-proof type.
Small signal removal function.

B. Pulse output type

Working voltage: +12VDC or +24VDC (the customer must select a power supply before ordering).
Signal transmission distance: less than 250 meters.
Output signal: square wave signal
Amplitude: +12VDC power supply amplitude is about 10V +24VDC power supply amplitude is about 20V
Installation: The connection between amplifier and turbine flow sensor is M16×1.5 thread. After the turbine flow sensor is installed, screw the amplifier to the turbine flow sensor. Tighten the lock nut until you feel the amplifier to the end.
Wiring: The pulse output type amplifier has three external leads, red wire, white wire and shield. The red wire is connected to the positive power supply, the white wire is the pulse output and other display instruments or equipment, and the shield is grounded.

C. 4～20mA output type

Working voltage: external power supply +24VDC (two-wire system)
Output signal: 4~20mA or 1-5V. 4mA corresponds to the zero flow of the turbine flow sensor, and 20mA corresponds to the maximum flow of the turbine flow sensor. See the nameplate of the turbine flow sensor for the flow range.
Signal transmission distance: less than 250 meters.
Installation: After the turbine flow sensor is installed, screw the amplifier to the turbine flow sensor connector (m16×1.5 thread). Tighten the lock nut by hand until you feel the amplifier is at the bottom.
Wiring: The external leads of the 4-20mA output amplifier are red and white wires. The red wire is the power wire and the white wire is the signal wire.

D. Split remote display type

Working voltage: 220VAC from external power supply
Signal transmission distance: less than 250 meters
Instantaneous four digits of the indicator: nine digits for the cumulative total
Display size: horizontal type: 160mm×80mm vertical type: 80mm×160mm
Display instrument with 4~20mA output and can be connected with computer

Know more about: Turbine type Flow Meter for Liquid & Gas technology

What liquids can be measured by Liquid Turbine Flow Meters?

In terms of measuring liquid flow, turbine flowmeters should be used in the following areas:

Partially corrosive liquid measurement. Such as sulfuric acid, hydrochloric acid, nitric acid, acetic acid and other acids and various chemical solutions.
Flow measurement of various industrial water. Including recycled water, waste water and waste liquid in various production processes in chemical, light industry, electric power, metallurgy, building materials, petroleum and other industries.
Partial low viscosity oil flow measurement. Such as gasoline, kerosene, diesel, and heavy oil and residual oil whose viscosity is reduced by heating.
Water flow measurement in large-diameter pipes, of which the full-pipe turbine flowmeter is mainly used for small and medium pipe diameters. The plug-in turbine flowmeter can be used for large pipe diameter (DN≥300mm) pipeline flow measurement. It is widely used in urban water pipelines and industrial water main lines of enterprises such as chemical industry, electric power, metallurgy, papermaking, and chemical fiber.
Measurement of non-conductive liquids. If it is said that electromagnetic flowmeters dominate the flow measurement of conductive liquids. In the field of non-conductive liquid flow measurement, electromagnetic flowmeters are powerless. The turbine flowmeter is very useful. Turbine flowmeters with small diameters introduced in recent years are more suitable for applications in this field.
Some turbine flowmeter products use a compression molding process to make the turbine flowmeter sensor into an all-plastic product. Then configure a non-contact ultrasonic detection element to measure the liquid without contact. It can be used for flow measurement of corrosive liquids and high purity liquids.
According to relevant information, in the petrochemical, pharmaceutical, food and semiconductor industries, turbine flowmeters have obtained fruitful applications. For example: methanol, formaldehyde, acetone, toluene, trichloroethylene, ethylene, butane liquid ammonia, etc. There are also pure water for the semiconductor industry, ultra-clean pure water and so on.

Turbine Flow Meter Application Case: Demineralized Water.

In fact, if your measuring medium is conductive liquid, or corrosive conductive liquid, or wastewater. It’s better consider using an electromagnetic flowmeter. Let’s take a quick look.

Extended reading: Turbine Flow meter Vs Gear Flow meter

Turbine flow meter Advantages and Disadvantages

Turbine Meter Advantages

The cost is moderate.
Very good at clean, low viscosity fluids of moderate velocity and a steady rate.
Turndown is very good as it can read very low compared to the greatest flow.
They are reliable if put in a clean fluid especially if it has some lubricity.
AGA and API approved for custody transfers.
They do cause some pressure drop where that may be a factor such as gravity flows.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.

Turbine Meter Disadvantages

Not reliable for steam.
Bearings wear out.
Requires constant backpressure to prevent cavitation.
Accuracy adversely affected by bubbles in liquids.
Turbine meters can be used with clean liquids and gases only (may need to install a strainer upstream to prevent damage from particulates).
Not applicable for measuring corrosive fluids.
May not function properly with high viscosity fluids where the flow profile is laminar.
Cannot maintain calibration characteristics for a long time.

The gas turbine flowmeter uses a turbine for measurement. It first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow rate.

Gas turbine flowmeter is used to detect instantaneous flow and total integrated flow. Its output signal is frequency, which is easy to digitize.

The induction coil and the permanent magnet are fixed on the housing together. When the ferromagnetic turbine blade passes the magnet, the reluctance of the magnetic circuit changes, thereby generating an induction signal.

The signal is amplified and reshaped by the amplifier and sent to the counter or frequency meter. The total accumulated flow is displayed. At the same time, the pulse frequency undergoes frequency-voltage conversion to indicate instantaneous flow.

The speed of the impeller is proportional to the flow, and the number of revolutions of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal. It not only improves the anti-interference of the detection circuit, but also simplifies the flow detection system.

The gas turbine flowmeter has a turndown ratio of up to 10:1, and the accuracy is within ±0.2%. The time constant of the turbine flowmeter with small inertia and small size can reach 0.01 second.

Liquid Turbine Flow Meter is a speed type flow meter based on the principle of torque balance.

The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction. The impulse of the fluid makes the blades have a rotational torque. After the friction torque and fluid resistance are overcome, the blades rotate. The speed is stable after the torque is balanced.

Under certain conditions, the speed is proportional to the flow rate.

Due to the magnetic permeability of the blade, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force. The magnetic flux of the coil is periodically changed. Electrical pulse signals are induced at both ends of the coil.

This signal is amplified and reshaped by an amplifier. A continuous rectangular pulse wave with a certain amplitude is formed. It can be transmitted to the display instrument remotely. The instantaneous flow or total amount of the fluid is displayed.

Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor. The flow equation is:

Where:
f——Pulse frequency [Hz]
k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet.
Q——The instantaneous flow of fluid (under working condition) [m3/h]
3600-conversion factor in seconds

The meter coefficient of each sensor is filled in the verification certificate by the manufacturer. The k value is set in the matching display instrument. The instantaneous flow and cumulative total can be displayed.

Extended reading: Turbine Insertion Flow Meter for Large Diameter Pipeline

What is k factor in turbine flow meter?

The physical meaning of the meter coefficient K value of a turbine flowmeter is the number of pulses generated by a unit volume of fluid flowing through the flowmeter. Using the international system of units, the unit of the meter coefficient is (1/m3).

Generally, the K factor will not change when the flow rate changes, but it should not exceed the upper limit of the flowmeter too much. The K factor is a constant based on a flow rate under certain process parameters.

How to get k factor on turbine flow meter?

There are two kinds of different manufacturers k:
One is k=f/Q, that is, the number of vortices generated per unit flow;
The other k=Q/f, that is, the plate flow rate corresponding to each vortex.
The k value is calibrated with the right factory water. The sensor measures the vortex number of the instrument and compares it with the volume flow measured by the calibration device to obtain the k value.

The k value is actually related to the internal mechanical structure of the flow meter measuring tube.
Taking k=f/Q as an example, the formula is as follows:

Where

D-measuring tube diameter
St-Strouhal number, constant within a certain range of Reynolds number
d—-The characteristic width of the vortex generator
m—The ratio of the arcuate area on both sides of the vortex generator to the cross-sectional area of the pipe

In fact, this formula has no practical meaning for you. The values of d and m are difficult to measure accurately. Therefore, it is difficult to obtain an accurate k value by calculation.

How to Calibrate a Turbine Flow Meter?

Before the turbine flowmeter leaves the factory, the coefficients have been set in the table.
When the user requests to display in mass units, the coefficient has been corrected and put into the table according to the medium density provided by the user before leaving the factory. It can be used directly on site.
If the physical properties of the measured medium on site differ greatly from those of water, on-site calibration can be performed.
Specific steps are as follows:

1. Install the turbine flowmeter as required. Turn on the valve to fill the pipeline with medium to ensure that the meter works normally. Close the valve and prepare for calibration;

2. Prepare a standard container or weighing equipment, and use the weighing method as an example here (record the tare weight);

3. First record the cumulative flow of the turbine flowmeter. Turn on the valve to make the flowmeter work within the flow range. When the container is almost full, close the valve. Record the cumulative flow of the flowmeter. Read the net weight of the measured medium on the scale;

4. Put the newly measured meter coefficient into the table again;

High Pressure Turbine Flow Meter

The high-pressure liquid turbine flowmeter is a special high-pressure flowmeter designed for hydraulic equipment, engineering machinery, chemical and other high-pressure fluid industries. The housing is made of stainless steel. The table structure is simple, and the structure design is optimized. It adopts high pressure butt welding flange clamp or high pressure screw connection structure.

Wide range of applications:
High-pressure liquid measurement occasions such as chemical high-pressure pipelines, hydraulic equipment, engineering machinery, and test benches. Hydraulic oil, circulating oil, oil station, construction machinery and other high-pressure liquids.

High pressure structure design, up to 40MPa

Turbine Flow Meter Price

Compared to other liquid flow meters. The price of turbine flowmeter is more advantageous.

For example: 4″, DN100 liquid turbine flowmeter. RS485 output. Accuracy ±1.0%R. SS304 material. Reference price USD600.00.

Reference price: US $200-1,500/ Piece. Contact Sino-Inst sales manager now to request a quotation!

Extended reading: Quantitative control with turbine flowmeter

FAQ

How do I choose a flow meter?

Sino-Inst recommends that you refer to the following factors to select the flowmeter.
1.Fluid type
For clear and mixed liquids, clean gases, and mixed gases, different flow meters are required. For example, liquids are generally suitable for turbine flowmeters, and for gas, vortex flowmeters are more popular. Of course, this is only the choice of most people, not a certain one, and can be chosen according to specific needs.
2.Flow range
The fluid flow rate range should be moderate, not exceeding the range of the flowmeter.
3.Pipe size
For smaller pipe sizes, rotors, turbines, and mass flow meters are generally used. For large pipe diameters, electromagnetic flowmeters and ultrasonic flowmeters are generally used. Some pipes are not suitable for electromagnetic and ultrasonic applications.
4.Signal output
If the signal output is not required, rotameter and mechanical water meter are generally used.
The output signal has an analog quantity (4-20mA, 0-10V) and pulse output, these flowmeters can have a digital display.
5.Pressure range
Depending on the material of the flowmeter’s wetted parts, the pressure resistance is different, and the pressure resistance range of stainless steel and copper is larger. If the flow rate is relatively low, pressure loss needs to be considered. In this case, turbines and positive displacement flow meters are not suitable.

Refer to: Liquid Flow Meters Selection Guide

What is water flow meter?

Water flow meter refers to a flow meter that can measure water flow. The common water flow meter is an electromagnetic flow meter. Of course, it can also be a turbine flowmeter, an ultrasonic flowmeter, etc., as required.

What is target flow meter?

Target flow meter, also called drag force flowmeter. Target flow meter inserts a target (drag element) into the flow field. The traget usually is a flat disc or a sphere with an extension rod. There will be a differential pressure. And then target flow meters measure the drag force on the inserted target and convert it to the flow rate. Sino-Inst manufactures target flow meters for liquid, gas and steam measurement.

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KimGuo11

drurylandetheatre.com

Cryogenic Flow Meters for Sale

Posted on November 17, 2020 by KimGuo11

Cryogenic Flow Meters for Highly Accurate and Reliable Cryogenic Fluids Flow Measurement.

Commonly used Cryogenic Flow Meters include cryogenic turbine flow meters, orifice flow meters, mass flow meters, target flow meters, etc. Representative cryogenic fluids include LNG (liquefied natural gas), LN2 (liquid nitrogen), LO2 (liquid oxygen), liquefied ethylene, liquid hydrogen, liquid chlorine, and these cryogenic gases. LPG (liquefied petroleum gas) is not included in the cryogenic Fluid.

Sino-Inst offers a variety of Cryogenic Flow Meters for Cryogenic fluids flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote

More Flow Meters

A cryogenic flow meter refers to an industrial flow meter specifically used to measure extremely low-temperature media. A cryogenic flow meter can complete the flow measurement of the medium under extremely low-temperature conditions. And the measurement accuracy is good, and will not damage the flowmeter.

At present, the common industrial cryogenic medium is around -200℃. For example, liquid nitrogen, liquid oxygen.

Extended reading: Cryogenic Liquid Nitrogen Flowmeters

A cryogenic liquid is defined as a liquid with a boiling point below -130oF (-90℃).

The representative cryogenic fluids are LNG (liquefied natural gas), LN2 (liquid nitrogen), LO2 (liquid oxygen), liquefied ethylene, liquid hydrogen, liquid chlorine and these cryogenic gases. LPG (liquefied petroleum gas) is not included in the extremely low temperature fluid.

Learn more about: Handling Cryogenic Liquids

Featured Cryogenic Flow Meters

**Turbine Flowmeter-Liquid Nitrogen Flow Meter**

Cryogenic Turbine Flow Meter

The liquid nitrogen flow meter is a commonly used cryogenic flow meter. The low-temperature turbine flowmeter is a dedicated liquid nitrogen flowmeter. It can also be used to measure cryogenic liquids such as liquid oxygen.

Liquid nitrogen refers to liquid nitrogen. Liquid with extremely low temperature. In industrial production, liquid nitrogen can be used as a deep refrigerant. The low-temperature turbine flowmeter is used as a liquid nitrogen flowmeter, which can work at a low temperature of -196°C (-320.8 °F). Liquid Nitrogen Flow Meter’s Turbine sensor structure at ultra-low temperature (-196℃) is made of special customized material, and it is equipped with low-temperature resistant amplifier. Realize the instantaneous and cumulative flow monitoring of liquid nitrogen.

Know more about: Turbine type Flow Meter

Cryogenic Mass Flow Meter

Cryogenic Mass Flow Meter is developed for measuring cryogenic media such as liquefied natural gas. The flow meter consists of a mass flow sensor and a transmitter. Adopting high-efficiency heat insulation technology to effectively control the heat exchange between LNG and other low-temperature media when flowing through the sensor. Reduce the vaporization of LNG and other low-temperature media in the pipeline, thereby reducing the impact of vaporization on flow measurement.

The equipped transmitter uses a digital signal processor (DSP) to process the collected signals and has the ability to judge the real-time state of the medium and other intelligent self-diagnosis functions. Temperature measurement range: -200-350℃.

Extended reading: Liquid Mass Flow Meter

Orifice flowmeter for cryogenic fluid

At present, many flows measuring instruments for extremely low-temperature fluids are orifice flowmeters, and their reliability is also very high.

The material is 316L;
In order to prevent fluid leakage caused by cold shrinkage. It is recommended to use welding method to connect, the orifice plate and the pipe use the same material;
The porous orifice plate has advantages in the flow measurement of very low temperature fluids such as liquefied natural gas. Because the gas that may be generated can flow smoothly downstream from the small holes on the upper part of the orifice plate, and no gas accumulates in front of the orifice plate.

Extended reading: Fluid flow meter types

Target flowmeter for cryogenic fluid

The target flow meter also called a drag force flowmeter. The target flow meter inserts a target (drag element) into the flow field. The target usually is a flat disc or a sphere with an extension rod. There will be a differential pressure. And then target flow meters measure the drag force on the inserted target and convert it to the flow rate. Sino-Inst manufactures target flow meters for liquid, gas, and steam measurement.

It can accurately measure the flow of gas and liquid under various working conditions of normal temperature, high temperature 500℃, and low temperature -200℃;

**Natural Gas Flow Meter Selection Guide**

How does a cryogenic flow meter work?

Different cryogenic flow meters have different working principles. Here we choose the commonly used target type flowmeter to introduce the working principle.

When the medium flows in the measuring tube, the pressure difference caused by its own kinetic energy passing through the blocking member (target). And has a force on the blocking member. The magnitude of the force is proportional to the square of the velocity of the medium.

The mathematical way is as follows:
F = CdAρ • V2 / 2

In the formula: F —— the force of the choke (kg)
Cd-object resistance coefficient
A ——Axial projection area of the choke on the measuring tube (mm2)
ρ ——Density of medium under working conditions (kg / m3)
the v-average flow velocity of the medium in the measuring tube (m / s)
The force F received by the choke member (target) is transmitted to the capacitive force sensor via a rigidly connected transmission member (stem).

And the capacitive force sensor generates a voltage signal output:
V = KF
In the formula:
V——Voltage output by the capacitive force sensor (mV), K——Proportional constant, F——The acting force of the choke (target)
So, after the voltage signal is pre-amplified, AD converted. And processed by the computer. The corresponding instantaneous flow and the cumulative total can be obtained.

Extended reading: liquid nitrogen level measurement

Liquid Nitrogen-Liquid Oxygen-Liquid Co2 Flow Meter

Liquid nitrogen refers to liquid nitrogen.
Liquid nitrogen is an inert, colorless, odorless, non-corrosive, non-flammable, extremely low-temperature liquid.

Frostbite is caused by a large amount of endothermic contact during vaporization.

Nitrogen makes up the bulk of the atmosphere (78.03% by volume and 75.5% by weight).

At normal pressure, the boiling point of nitrogen is -196.56°C. 1 cubic meter of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen (21°C). Liquid nitrogen can be obtained at higher temperatures if pressurized.

In industry, liquid nitrogen is obtained by fractional distillation of air.
The air is first purified and then liquefied in a pressurized and cooled environment. Separation by the different boiling points of components in the air.

There is no problem when human skin directly contacts liquid nitrogen for an instant. More than 2 seconds will cause frostbite and irreversible.

Extended reading: V-Cone Flow Meter Working Principle

Liquid oxygen (commonly denoted by the abbreviation LOX or LO²) is the form of oxygen in its liquid state. It has important applications in aerospace, submarine and gas industries. Liquid oxygen is a light blue liquid with strong paramagnetic properties.

Liquid O2 has a wide range of industrial and medical uses. Liquid oxygen is produced industrially by fractional distillation of liquid air. The total expansion ratio of liquid oxygen is as high as 860:1. Because of this advantage it is widely used in industrial production and military in modern times.

Due to its low temperature properties, liquid oxygen can make the substances it comes into contact with very brittle.

Liquid oxygen is also a very strong oxidant: organic matter burns violently in liquid oxygen. Some substances may explode if immersed in liquid oxygen for extended periods of time, including asphalt.

Liquid carbon dioxide refers to the liquefaction of carbon dioxide gas into a liquid form under high pressure and low temperature.

Liquid carbon dioxide is a refrigerant. It can be used to preserve food, and it can also be used for artificial rainfall.

It is also an industrial raw material and can be used to make soda ash, urea and soft drinks.

For the above liquid nitrogen, liquid oxygen, liquid hydrogen and other extremely low temperature liquids, if you need to detect the flow. Then we recommend choosing a very low temperature turbine flowmeter or a gear flowmeter. These two flowmeters can perform excellent flow detection under extremely low temperature conditions.

The low-temperature turbine flowmeter is used as a liquid nitrogen flowmeter, which can work at a low temperature of -196°C (-320.8 °F). The Turbine sensor structure at ultra-low temperature (-196℃) is made of special customized material. Realize the instantaneous and cumulative flow monitoring of liquid nitrogen.

Nominal diameter:
Common type (0.5～300) mm;
Anti-corrosion type (6～100) mm
Insertion type (80～600)mm
Medium temperature:
Ordinary type (-20～80)℃
High temperature type (-20～120)℃
Ultra-low temperature type (-196～80)℃
Ambient temperature: (-20～55)℃;
Accuracy: ±0.2%, ±0.5%, ±1%;
Detector signal transmission line system: three-wire voltage pulse (three-core shielded cable);
Power supply: voltage: 12V±0.144V, current: ≤10mA;
Output voltage amplitude: high level ≥ 8V, low level ≤ 0.8V;

Gear flow meters are also a good choice for small-caliber liquid nitrogen measurement.

Gear flow transmitter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volume flow.

High pressure resistance (1.0-45MPa)
High and low temperature resistance (-196℃-200℃)
Can measure various viscous media
High precision and repeatability
Pulse output/analog output optional
Wide range ratio (1:100)
Wide measuring range
Strong anti-corrosion and anti-fouling ability (acid and alkali)

Frequently
Asked
Questions

Help Center

Turbine flow meters are velocity flow meters, also called impeller flow meters. Can be used to measure the instantaneous flow and cumulative flow of liquids and gases.

Turbine flowmeters are widely used in flow measurement: petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas and cryogenic fluids. Turbine flowmeter signals can be divided into pulse signals or current signals (4-20mA). It is suitable for use with secondary display, PLC, DCS and other computer control systems.

The purpose of the flowmeter is to measure the flow of fluid in a pipe or open channel.

Flow meters are the eyes of industrial production.

Flow meters play a big role. It not only monitors media flow in real time. Moreover, in this aspect of automation, many industrialized enterprises have greatly reduced a lot of manpower and material resources.

Some common types of flowmeters that mainly measure gases and liquids are:
Electromagnetic Flowmeter,
Vortex flowmeter,
Thermal mass flow meters,
orifice flowmeter,
Turbine flowmeter,
V cone flowmeter,
orifice flowmeter,
Porous balance flowmeter,
Metal rotameter, etc.

In my country, the absolute value of the maximum relative percentage error of the flowmeter is used as the standard for dividing the accuracy level.
The maximum relative percent error is a simplified relative error.
The calculation method is:
Relative percent error = (measured value of the measured parameter – standard value of the measured parameter) / (the upper limit of the scale – the lower limit of the scale) * 100%
In order to facilitate the transmission of the value, the country has uniformly stipulated the series of accuracy grades of the instrument.

Remove the “±” and “%” numbers from the relative percent error of the flowmeter. It can be incorporated into the national unified instrument accuracy grade series:

The accuracy of the first-class standard flowmeter: 0.005, 0.02, 0.05;
The flowmeter accuracy of the secondary standard: 0.1, 0.2, 0.35, 0.5;
Accuracy of general industrial flowmeter: 1.0, 1.5, 2.5, 4.0.

In addition, according to different uses. The accuracy of the flowmeter can also be divided into different grades:

The accuracy level of the flowmeter used in scientific experiments is above 0.05;
Most of the instruments used for industrial testing are in grades 0.1 to 4.0. Among them, the standard meters used for calibration are mostly grade 0.1 or 0.2. Most of the instruments used on site are grade 0.5 to 4.0.
The instruments used for industrial testing are mostly in the 0.1 to 4.0 level.

Coriolis mass flow meters should be the most accurate flow meters on the market today.
Of course, the user only needs to choose the precision that meets the needs.

CO2 flow meters are instruments that can measure the flow of gaseous or liquid carbon dioxide. CO2 is a common industrial gas, and effective measurement is very important.

Carbon dioxide (CO2) is a colorless, odorless gas at room temperature and pressure. We often recommend precession vortex flowmeters, v-cone flowmeters, vortex flowmeters, gas turbine flowmeters, etc. Under different working conditions, we will choose different flow meters for customers.

Read more about: Industrial CO2 flow meters

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Sino-Inst, Manufacturer for Cryogenic Flow Meters. A wide variety of Cryogenic Flow Meters options are available to you.

Sino-Inst’s Cryogenic Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

KimGuo11

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Low temperature Turbine Flowmeter-The Best Liquid Nitrogen Flow Meter

Posted on November 16, 2020 by KimGuo11

A liquid nitrogen flow meter is a commonly used cryogenic flow meter. The low-temperature turbine flowmeter is a dedicated liquid nitrogen flowmeter. It can also be used to measure cryogenic liquids such as liquid oxygen.

Liquid nitrogen refers to Liquid with extremely low temperatures. In industrial production, liquid nitrogen can be used as a deep refrigerant. The low-temperature turbine flowmeter is used as a liquid nitrogen flowmeter, which can work at a low temperature of -196°C (-320.8 °F). Liquid Nitrogen Flow Meter’s Turbine sensor structure at ultra-low temperature (-196℃) is made of special customized material. Realize the instantaneous and cumulative flow monitoring of liquid nitrogen.

Sino-Inst offers a variety of Turbine flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote

Turbine Flow Meters

Features of Turbine type Liquid Nitrogen Flow Meter

The sensor is a fully enclosed structure, so it is safe and reliable, and can be used for high-pressure pipeline measurement according to requirements;
The sensor material can be customized according to requirements, such as 304, 316 and all tetrafluoroethylene materials, suitable for various media, such as acid, alkali and other strong corrosive liquids;
The sensor is a hard alloy bearing thrust type, which not only ensures accuracy, but also improves wear resistance.
The sensor has been specially modified by our company, the structure is simple, firm and easy to disassemble;
Wide measuring range and low lower limit flow rate;
Measurement accuracy 0.2, 0.5, 1.0 can be selected as required;
Our company’s caliber breaks through the convention, from 0.5mm, 1mm, 2mm, etc. to super large diameter insert type can be customized;
When the anticorrosive PTFE material is constructed, the PTFE materials are all imported from Japan, which is safe and reliable;
Ultra-high pressure type sensor adopts high thickness sealed sensor, matching high pressure flange or installation accessories;
At ultra-low temperature (-196℃), the sensor structure is made of special custom-made imported materials, supporting low temperature resistant amplifier;
The comprehensive pressure loss is small, the repeatability is good, and the accuracy is high.
It has high resistance to electromagnetic interference and vibration.
Various displays, battery-powered on-site display, external power supply display, and various signal outputs are all configured;
The supporting explosion-proof meter is suitable for the use of explosion-proof products;
Various installation methods are available: thread, flange, quick installation, direct welding, etc.;
It can be used with flow totalizer to complete remote display;
It can be combined with control instruments and control systems to form automatic quantitative conveying and feeding equipment;

Know more about: Turbine type Flow Meter

Specifications of Turbine type Liquid Nitrogen Flow Meter

Nominal diameter:
Common type (0.5～300) mm;
Anti-corrosion type (6～100) mm
Insertion type (80～600)mm
Medium temperature:
Ordinary type (-20～80)℃
High temperature type (-20～120)℃
Ultra-low temperature type (-196～80)℃
Ambient temperature: (-20～55)℃;
Accuracy: ±0.2%, ±0.5%, ±1%;
Detector signal transmission line system: three-wire voltage pulse (three-core shielded cable);
Power supply: voltage: 12V±0.144V, current: ≤10mA;
Output voltage amplitude: high level ≥ 8V, low level ≤ 0.8V;
Transmission distance: The distance between the sensor and the indicator can reach 250 meters;
On-site display power supply: 3V (powered by lithium battery, can be used continuously for 3 years);
Display mode: on-site LCD display instantaneous flow and accumulated flow;
On-site display power supply with signal output: 24V; 4-20mA two-wire current output, remote transmission distance of 500 meters.

Extended reading: Turbine Flow meter Vs Gear Flow meter

The flow range and pressure are shown in the figure, and the flow unit is m3/h (for anti-corrosion or plug-in type, please inquire)

Dn (mm)	Flow Range						Nominal pressure PN （Mpa）	Maximum pressure loss（Mpa）
	Basic error limit ±0.2%		Basic error limit 0.50%		Basic error limit 1.00%
	Basic error limit ±0.2%		Basic error limit 0.50%		Basic error limit 1.00%
	Lower limit	Upper limit	Lower limit	Upper limit	Lower limit	Upper limit
0.5					0.004	0.012	1.6 or 4	0.15
1					0.007	0.021
2*	–	–	–	–	0.01	0.13
3*	–	–	–	–	0.04	0.25		0.12
4*	–	–	–	–	0.04	0.25	4 6.3 16* 25* 35*（Note 1）	0.12
6			0.1	0.6	0.1	0.6		0.08
10			0.25	1.2	0.2	1.2
12	0.8	2.5	0.4	2.5	0.25	2.5
15	1.2	4	0.6	4	0.4	4
20	1.5	7	1.1	7	0.7	7
25	2	10	1.6	10	1	10		0.04
32	3.2	16	2.5	16	1.6	16
40	4	20	3	20	2.5	25	4 or 10
50	8	40	4	40	4	40	4 or 10
65	12	60	6	60	6	60	1.6 or 2.5
80	20	100	10	100	10	100
100	25	160	20	160	16	160
150	50	300	40	300	40	400
200	120	600	100	600	80	800	1.6 or 2.5 or 4
250*	200	1000	160	1000	120	1200
300*			250	1600	180	1800

Note 1: There is no 35MPa for diameter 32mm
Note 2: “*” is a special order.

The nominal diameter is 0.5mm, the flow range is 0.02～0.06 m³/h, the basic error: ±1% of reading, when ≤0.02 m³/h, the basic error: ±1%FS. The flow range with a nominal diameter of 1mm is 0.03～0.100 m³/h, the basic error: ±1% of reading, when ≤0.03 m³/h, the basic error: ±1%FS.

When the nominal diameter is 2mm and the flow range is 0.040~0.13m3/h, the basic error: ±1% of reading; when ≤0.040m3/h, the basic error: ±1%FS (full-scale value).

When the nominal diameter is 3mm and the flow range is 0.085~0.250m3/h, the basic error: ±1% of reading; ≤0.085m3/h basic error: ±1%FS (full-scale value).

The flow range shown in the table is a conventional value. If necessary, it can be appropriately extended according to user requirements. The minimum flow rate can be extended to about 0.3m/s, and some specifications can be lower. The accuracy in the extended area is based on the full-scale value. The relative error is expressed.

Measuring medium: liquid (avoid multiphase flow)
Medium viscosity range: ≤5mPɑ·S
Calibration: Calibration with water before leaving the factory

Extended reading: Cryogenic Flow Meters | Liquid Nitrogen-Liquid Oxygen

Application of Liquid Nitrogen Flow Meter

Quickly freeze and transport food, or make ice products;
Conduct research on low temperature physics;
In the electronics industry, dry nitrogen is used to purge silicon wafers to keep the silicon wafers dry and clean. In the large-scale integrated circuit production process, high-purity nitrogen can be used as the carrier gas, inert protective gas and packaging gas for chemical reaction gas.
Liquid nitrogen is used for metal over-fitting or static-fitting assembly to avoid high temperature oxidation and maintain the surface finish of the parts. Parts soaked in liquid nitrogen can prolong the wear life after processing. Liquid nitrogen cooling during metal cutting has the advantages of long life and high surface finish.
Nitrogen is mainly used as shielding gas and purge gas in metallurgical industry. In the process of steel rolling and metal heat treatment, due to the preservation of nitrogen, the high temperature oxidation of the metal is reduced and the surface is smooth and clean. Filling the non-ferrous metal smelting furnace with nitrogen can reduce oxygen content and temperature, reduce oxidation, and improve product purity. Purge the molten steel with nitrogen to reduce the hydrogen content in the steel and increase the strength of the product. When the blast furnace is started, 86% of nitrogen is blown in, which can reduce coke consumption and extend the service life.
Used for chemical testing, such as BET specific surface area test method.

If you need to measure not liquefied nitrogen and liquefied oxygen, but gas nitrogen and oxygen. You can refer to:

Industrial oxygen flow meters Nitrogen flow measurement

Turbine type Liquid Nitrogen Flow Meter installation guide

Before installation and use, clean or keep the tested liquid free of impurities, fibers and particles.
Before using the sensor, fill the sensor slowly with liquid. Then open the outlet valve (the valve should be installed at the back of the flowmeter). It is strictly forbidden for the sensor to be impacted by high-speed fluid when it is in a liquid-free state.
Especially newly installed pipelines should be cleaned before installation. Install the sensor again.
The sensor should be cleaned regularly if possible. During maintenance and cleaning, please be careful not to damage the parts in the measuring chamber, especially the impeller. When assembling, please pay attention to the position relationship between the guide and the impeller.
When the sensor is not in use, clean the internal liquid. After drying, add protective sleeves on both ends of the sensor to prevent dirt from entering. Then store in a dry place. (This item is very important)
The equipped filter should be cleaned regularly. Clean the internal liquid when not in use. Just like the sensor, add a dust cover and store it in a dry place.
The transmission cable of the sensor can be laid overhead or buried (the iron pipe should be covered when buried.)
It is also very important to choose the installation point. It is recommended to install it on a horizontal pipe and pay attention to the direction of the fluid.
Ensure a certain straight pipeline before and after the installation point, away from pumps, frequency conversion or high-voltage equipment.
Before the sensor is installed, connect the line with the display instrument or the oscilloscope, turn on the power, and blow the impeller by mouth or hand to make it rotate quickly to observe whether there is display. Install the sensor when there is a display. If there is no display, check the relevant parts and troubleshoot.

Read more about Liquid Flow Meters Guide

Nitrogen Gas Flowmeters-Liquid Nitrogen Flowmeters

Gear flow meter for low liquid nitrogen flow measurement

The Gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃).

The Gear flow meter for Microflow is made of stainless steel and is used for precise continuous or intermittent measurement of the flow or instantaneous flow of liquid. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease, and other high-viscosity media. It can measure the viscosity of Fluid up to 10000Pa.s.

Extended reading: liquid nitrogen level measurement

Nitrogen Gas flow meter

Cryogenic turbine flow meters and Gear flow meters are both used to measure cryogenic liquid nitrogen flow meters.
However, if you want to measure nitrogen, what flow meter should you use?

There are four mainstream measuring instruments:

Thermal gas mass flow meter. Directly measure the mass flow of common gases, including nitrogen.
Coriolis mass flowmeter. Directly measure the mass flow of gas and liquid. It can be used to measure nitrogen, which is more expensive.
The vortex flowmeter directly measures the volume flow of gas and liquid. It is necessary to add temperature and pressure measuring sensors and totalizers to calculate the mass flow.
Orifice flowmeter. The orifice is used as a throttling element and is equipped with a differential pressure transmitter to calculate the volume flow. To convert into a mass flow, temperature, pressure sensors and totalizers must also be added.

Compared with the above, the thermal gas mass flowmeter is recommended, which is moderately priced, simple to install and maintain, and accurate.

Further reading: Nitrogen(N2) Flow Meter Types

Extended reading: 5 matters to pay attention to when choosing threaded Vortex Nitrogen Gas Flow Meter

FAQ

What is nitrogen flow?

The volume unit of the measurement gas is NM3, the standard square.
Strictly speaking, it should be a volume unit, not a flow unit. Sometimes it means m3/h to be practical.
The volume flow rate of gas is measured in m3/h. Because the gas volume is related to temperature, pressure, and humidity, in order to facilitate comparison, the volume flow rate usually refers to the standard state (temperature is 20℃, pressure is 0.11MPa, relative humidity is 65%). The flow rate at this time is Nm3/h is the unit, “N” means the standard state.
Sometimes abbreviated as irregular h-1 liquid flow unit is different in different countries and regions.
Mass units commonly used internationally: milligrams, grams, kilograms, metric tons, ounces, pounds, and shale;
Volume units: milliliters, liters, cubic millimeters, cubic centimeters, cubic meters, cubic inches, cubic feet, gallons (English), gallons (US), pints (English), dry pints (US), liquid pints (US), fluid ounce (US), fluid ounce (English), barrel, etc.
The nitrogen flow unit is Nm³/h, commonly known as cubic per hour. The preceding N indicates that when there is pressure, the general flowmeter is marked like this.
Hope it helps you!

How does a liquid flow meter work?

The liquid flow meter can be divided into the following categories according to the measurement principle:
Mechanics principles: instruments that fall into this category include differential pressure type and rotor type using Bernoulli’s theorem; impulse type and movable tube type using momentum theorem; direct mass type using Newton’s second law; using fluid momentum principle Target type; turbine type using the angular momentum theorem; vortex type and vortex type using the principle of fluid oscillation; pitot tube type using total static pressure difference, volume type, weir, trough type, etc.
Electrical principle: The instruments used for this kind of principle include electromagnetic, differential capacitive, inductive, strain resistance, etc.
Acoustic principle: There is an ultrasonic method for flow measurement using the acoustic principle. Acoustic (shock wave) etc. Thermal principle: There are calorimetric, direct calorimetry, indirect calorimetry, etc. that use the thermal principle to measure flow. Optical principle: laser type, photoelectric type, etc. are instruments of this type of principle. Principles of atomic physics: nuclear magnetic resonance, nuclear radiation, etc. are instruments that belong to this type of principle. Other principles: There are marking principles (tracing principles, nuclear magnetic resonance principles), related principles, etc.
More about: Liquid Flow Meters Guide

What is a totalizer in a flow meter?

Most of the flow meters have the function of cumulative flow calculation. The component that realizes this function is the totalizer of the flowmeter. If the flowmeter itself does not have a cumulative flow calculation function. Then, we can configure a separate flow totalizer for flow accumulation calculation.
Extended reading: Turbine Insertion Flow Meter for Large Diameter Pipeline

You nay like:

Sino-Inst, Manufacturer for Liquid Nitrogen Flow Meters. A wide variety of liquid nitrogen flowmeter options are available to you.

Sino-Inst’s Liquid Nitrogen Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

KimGuo11

drurylandetheatre.com

Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Posted on November 16, 2020 by KimGuo11

The oil level sensor is very important for monitoring the level of the oil tank/fuel tank. Ultrasonic Oil Level Sensor is mainly used for monitoring the level of truck oil tank. Oil level displays and transmit.

Ultrasonic oil level sensor uses the principle of ultrasonic detection to detect the fuel level of the fuel tank. The fuel volume data is transmitted to the background monitoring system to achieve real-time monitoring of vehicle fuel consumption. Ultrasonic oil level sensor is mainly used in the field of Internet of Vehicles to monitor the change of fuel level in the fuel tank in real-time to achieve fuel level detection. It can be used to prevent fuel stealing, optimize operating costs, optimize driver driving behavior, and assist statistical decision-making. At the same time, this product can also be used in chemical, water conservancy, storage tanks, and other fields that require level detection.

Sino-Inst offers a variety of Ultrasonic level sensors for level measurement. If you have any questions, please contact our sales engineers.

Request a Quote

Ultrasonic Level Sensors

Features of Ultrasonic Oil Level Sensor

Non-contact measurement. No need to change the shape of the container. No need to polish the surface paint of the container. No need to punch.
Easy to install and maintain. Just install the sensor probe below the outside of the fuel tank. No need to change the original fuel tank measurement system. No need to make holes and changes to the fuel tank. And can guarantee the normal operation of the original automobile fuel gauge.
Prevent the fuel level sensor from being corroded and polluted by the fuel, and can maintain long-term measurement stability;
Metal shell, internal circuit potting treatment, rainproof design, no pressure on outdoor environment.
The external waterproof 3M glue is equipped with a special metal fixing bracket, which is simple to install and firmly fixed.
Wide voltage operation, DC 12～48V power supply, suitable for various vehicles.
RS232/RS485/0～5V voltage analog quantity/TTL-UART multiple output interfaces, compatible with various sensor signal acquisition equipment connections.
High frequency ultrasonic detection, high solid penetration, suitable for containers made of various materials such as metal and plastic.
Strong reliability. It can work normally in harsh environments, moisture-proof, acid-proof, flame-retardant, anti-interference, and intelligent.
The product can be used alone, using the auxiliary display to directly view the data. It can also be used in conjunction with a GPS device to transmit data to the background through the GPS device. Perform data statistics, report analysis and query.

Specifications of Ultrasonic Oil Level Sensor

Parameter item	Specification Description
Operating Voltage	DC12~48V
Working current	≤25mA
Measuring range	5~150cm
Measurement resolution	0.1mm
Explosion-proof grade	Intrinsically safe ExiaⅡCT6 Flameproof ExdⅡCT5
Protection level	IP67 dustproof and waterproof
Operating temperature	-20℃~80℃
storage temperature	-25℃~85℃
Device interface	RS232/RS485/0~5V analog
Communication interface parameters	Communication rate 9600bit/s
The thickness of the measured container	≤20mm

Remarks:

Ⅰ. Normal temperature and humidity. 1 standard atmosphere. The measured liquid is 0# diesel. For testing other liquids, please specify when ordering.

Ⅱ. The sensor can satisfy 2cm thickness container. 5 meters range requirement. Changes in the measurement range must be notified in advance. Default 5cm~1.

Ⅲ. The sensor RS232/RS485 default automatic output mode, compatible with MODBUS controlled and capacitive stick mode.

Extended reading: Guide to Ultrasonic Level Transmitters

Comparison of Ultrasonic Oil Level Sensor with other Oil Level Sensors

Capacitive type: easy to be affected by oil pollution and cause errors. Can not produce electric sparks. Hole installation.
Resistive type: mechanical measurement. Large error, hysteresis, long-term contact with the sensor. It is easy to be corroded and polluted, which affects the measurement accuracy. The fuel tank must be punched during installation.
Flowmeter type: the oil pipe needs to be cut off, and the fuel filling amount cannot be measured. Only the used amount can be measured. It is not convenient for measurement management.
Reed tube type: measurement output accuracy is low. It is greatly affected by the temperature of the measurement medium and the fluctuation of the power supply voltage. The components are easy to be magnetized. The measurement data is greatly affected by the fluctuation of the oil level and the oil pollution, and cannot be installed and manufactured according to the height of the fuel tank.
Float type: can only be used for the fuzzy indication of the liquid level. It cannot be used for the measurement of the liquid level, the degree of fuel contamination of the film resistor, the power supply voltage, the mechanical structure, the lubricity and other product reasons, and the long-term stability of the output value Greater impact.
Ultrasonic: Use non-contact ultrasonic technology to measure. High measurement accuracy, free from corrosion and pollution, explosion-proof, convenient installation, high stability and wide application.

Explore Oil and Gas Flow Meters

How does an oil level sensor work?

Ultrasonic externally attached oil level sensor uses the principle of ultrasonic echo ranging. The sensor is installed outside the bottom of the fuel tank and sends out an ultrasonic signal from the bottom, which is reflected by the oil surface, and then calculates the height of the liquid level according to time and speed.

At the same time, combined with digital signal processing technology, it overcomes the influence of the container wall and realizes high-precision non-contact measurement of the liquid level in the container, which can meet the requirements of industrial applications in terms of application.

Extended reading: Types of Fuel-Diesel Level Sensors

Ultrasonic Oil Level Sensor Application

The ultrasonic fuel level sensor can be used for various vehicles. Such as logistics vehicles, taxis, buses, passenger vehicles, etc.. It is used to digitally record vehicle fueling and fuel consumption. Prevent fuel theft. Avoid waste of resources. Improve operating efficiency, And improve traffic safety. Strengthen the level of operation and management.

Prevent oil theft: The system can easily read the actual oil volume through the oil volume display screen or the background monitoring terminal. It can effectively control the behavior of stealing oil and falsely issuing fuel bills.
Optimizing operating costs: Through the collection and analysis of statistical monitoring data, the oil volume and mileage at any time can be counted, and the oil volume per kilometer and the fuel cost per kilometer can be calculated. This allows the managers to analyze the economic and fast transportation routes.
Optimize driver’s driving behavior: Real-time monitoring of fuel quantity data can effectively improve the driver’s driving habits and reduce normal fuel consumption.
Strengthen operation management: effective oil quantity data analysis and statistics. Provide scientific decision-making basis for enterprises. Change unreasonable quota oil quantity management indicators based on experience and intuition. Through the statistical analysis of oil quantity, the unreasonable quota oil quantity index can be quickly reduced to a reasonable level. It can save the enterprise’s high oil quantity quota expenditure.

Extended reading: Oil Level Measurement Solutions for the Oil & Gas Industry

Extended reading: Diesel fuel tank level gauges & indicators

Ultrasonic Oil Level Sensor Installation Steps

Step 1. Choose the installation location

① When selecting the installation area at the bottom of the fuel tank, try to avoid the oil outlet pipes at both ends of the fuel tank and the barrier position near the oil inlet, and try to choose the ideal installation area at the middle position.

②Clean up the dirt at the installation location with a rag at the selected location. Please do not polish the paint layer at the bottom of the fuel tank before confirming the installation point, so as to avoid the wrong location and waste installation man-hours.

Step 2. Test and confirm the installation point

①Spread the prepared clean water on the sensing area of the probe, and add as much water as possible to ensure that the air on the contact surface between the sensor and the fuel tank is removed, and then the sensor is fixed to the fuel tank to select the installation position.

②Connect the waterproof head of the display board and the waterproof head of the oil level sensor, insert the USB plug of the display board into the pre-prepared mobile power supply, and observe whether the data on the display board is stable to determine whether the selected point is correct.

Step 3. Fix the ultrasonic oil level sensor

① Polish the selected installation point with sandpaper to remove the paint layer to ensure that the installation surface is flat, and clean it again with a rag to ensure that no dirt enters the sensor before installation.

②Use a glue gun to hit the glue into the sensor’s sensing area, and use a toothpick to mix the glue evenly, and then fit it to the fuel tank installation position. The glue will initially solidify in 4-5 minutes at room temperature, and then prepare the wiring.

Ultrasonic Tank Level Sensor-External Mounted

The ultrasonic tank level sensor is a completely non-contact/non-invasive measurement. The principle of ultrasonic (sonar) is used to measure liquid level. Fuel tank level monitoring, display, alarm, etc.

ultrasonic tank level sensor

Ultrasonic tank level sensor is also often referred to as “ultrasonic water level sensor”, “ultrasonic level detector” or “ultrasonic level transmitter”, etc.

Ultrasonic tank level sensor uses ultrasonic pulse echo to achieve liquid level measurement. Specifically, the transducer (probe) of the ultrasonic tank level sensor emits high-frequency ultrasonic pulses. When it encounters the surface of the liquid level to be measured, the sound waves are reflected Back. Part of the reflected echo is received by a transducer (probe) and converted into an electrical signal.

The user can almost truly know the time of the water level based on the reflected signal. The ultrasonic tank level sensor is one of the most common non-contact liquid level measurement instruments in the industry.

Ultrasonic tank level sensor can be widely used in various atmospheric storage tanks, process tanks, small tanks and small containers, pump lifting stations, waste water storage tanks, etc.;

Due to the flexibility of its design, ultrasonic level gauges can also be used in integrated systems or in place of float switches, conductivity switches and static pressure sensors. It can also be found in integrated applications in fluid control and chemical supply systems.

Extended reading: Capacitance level sensor advantages and disadvantages

Related Products

**ULT-200A Ultrasonic fuel tank level sensor**

**Portable Ultrasonic Liquid Level Indicator**

**HS-2000 Ultrasonic Tank Level Sensor-External Mounted**

**SIRD-905 Horn Antenna Radar Tank Level Sensor**

**Alternative to VEGAPULS 64-80GHz FMCW Level Radar**

**Differential pressure(DP) level transmitte**

**Remote Seal Differential Pressure Transmitter**

**SI-302 Anti-corrosive Submersible Level Transmitter**

**SI-PCM261 Submersible Pressure Transducer**

**SIRD-701 Guided Wave Radar Level Sensor**

Frequently
Asked
Questions

Ultrasonic liquid level sensor is a digital liquid level meter controlled by microprocessor.

In the measurement, ultrasonic pulses are emitted by a sensor (transducer). The sound wave is reflected by the liquid surface and received by the same sensor. It is converted into an electrical signal by a piezoelectric crystal. Measure the distance to the surface of the liquid.

Due to the non-contact measurement, the measured medium is almost unlimited, and it can be widely used in the measurement of the height of various liquid materials.

In fact, there are many types of oil level sensors. Different types of oil level sensors work differently.

For example, the External PasteUltrasonic Oil Level Sensor mentioned in this article is based on ultrasonic measurement.

There is also a common capacitive oil level sensor. The sensing part of the capacitive oil level sensor is a coaxial container. When the oil enters the container, it causes a change in the capacitance between the sensor housing and the sensing electrode. This variation is converted through the circuit and performs accurate linear and temperature compensation, and outputs a 4-20mA standard signal for the display instrument.

For other types of oil level sensors, please refer to:

Oil Level Measurement Solutions for the Oil & Gas Industry

Of course. The oil level sensor is very important. Whether it is for automobiles or industrial tanks.

Accurate measurement and monitoring of oil level can effectively save production costs and ensure production efficiency.

Magnetostrictive Level Gauge Application: Refined Oil Storage Tank

The working principle of the ultrasonic liquid level sensor is:

Ultrasonic transducer (probe) emits high-frequency pulse sound waves, and the surface of the measured level (material) is reflected back. The reflected echo is received by the transducer and converted into an electrical signal. The propagation time of the sound wave is proportional to the distance from the sound wave to the surface of the object.

The relationship between the sound wave transmission distance S and the sound speed C and the sound transmission time T can be expressed by the formula: S=C×T/2.

Image Source： https://www.coulton.com/beginners_guide_to_ultrasonic_level_transmitters.html

The probe part emits ultrasonic waves, which are then reflected by the liquid surface. The probe part is received again. The distance from the probe to the liquid (object) surface is proportional to the elapsed time of the ultrasonic wave:
hb = CT2
Distance [m] = time × speed of sound/2 [m]
The temperature compensation formula of sound velocity:
Ambient sound velocity = 331.5 + 0.6 × temperature

Currently, most ultrasonic level sensors on the market have an accuracy of ± 0.5% (standard conditions).

It can already meet the needs of most users.

Different types of oil tank level sensors work based on different measurement principles. Oil tank level sensors measure tank oil level either directly or indirectly.

For detailed classification and working principle of oil tank level sensors, please refer to:

Classification of Oil Level Measurement

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The material level indicator refers to an instrument for real-time detection of changes in the height of solid materials in a container. Material level indicator is also known…

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Water level control refers to the control of high and low water levels by mechanical or electronic methods. It can control solenoid valves, water pumps, etc. to become…

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Wastewater level sensor occupies a large proportion in sewage treatment applications. It is used in almost all aspects of sewage treatment. In sewage treatment, the level of waste…

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Tank Level Gauges & Indicators

Tank level gauges are instruments used to indicate and control the height of the liquid level in the tank. Commonly used in water storage tanks, oil storage tanks,…

Sino-Inst offers over 10 Ultrasonic Tank Level Sensors for level measurement. About 50% of these are fuel level meters, 40% is the tank level sensor.

A wide variety of Ultrasonic Tank Level Sensor for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Tank Level measurement instrumentation, located in China.

Request a Quote

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KimGuo11

drurylandetheatre.com

Liquid Flow Meters Guide

Posted on November 13, 2020 by KimGuo11

What is a liquid flow meter?

A liquid flow meter is a kind of meter that measures the flow of liquid fluid in pipes or open channels. Liquid flow meters can effectively monitor liquid flow rates for water, fuels, chemicals and more fluids.

If you need to purchase a Liquid Flow Meter, this article will be your best Purchasing Guide. Keep reading, Please!

Flow meters are classified into liquid flow meters and gas flow meters according to the medium. Then the common liquid flow meters mainly include: vortex flowmeter, turbine flowmeter, electromagnetic flowmeter, ultrasonic flowmeter, differential pressure flowmeter, open channel flowmeter, Coriolis mass flowmeter, etc.

Sino-Inst offers a variety of Liquid Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.

More Liquid Flow Meters

Featured Liquid Flow Meters

Liquid Flow Meter Types

Turbine flow meter

Turbine flow meters are the main type of velocity flow meters. It uses a multi-blade rotor (turbine) to sense the average flow velocity of the fluid. A meter from which the flow or total volume is derived. Generally, it is composed of two parts: sensor and display instrument, and it can also be made into an integral type.

Application: Turbine flowmeter is widely used in measuring petroleum, organic liquid, inorganic liquid, liquefied gas, natural gas and cryogenic fluid.

Turbine flowmeter product features

Strong resistance to impurities.
Strong anti-electromagnetic interference and anti-vibration ability.
Its structure and principle are simple and easy to maintain.
Almost no pressure loss, saving power and electricity consumption.

Extended Reading: Liquid Turbine Flow Meter

Electromagnetic flow meter

Electromagnetic flowmeter is an instrument for measuring conductive liquid made according to Faraday’s law of electromagnetic induction.

Application:

The electromagnetic flowmeter has a series of excellent characteristics, which can solve the problems that other flowmeters are not easy to apply, such as the measurement of dirty flow and corrosion flow.

Electromagnetic flowmeters have a wide range of applications, and large-caliber meters are mostly used in water supply and drainage projects;
Small and medium calibers are often used in high-demand or difficult-to-measure occasions, such as the cooling water control of the blast furnace tuyere in the iron and steel industry, the measurement of pulp and black liquor in the paper industry, the strong corrosive liquid in the chemical industry, and the ore pulp in the non-ferrous metallurgical industry;
Small calibers and tiny calibers are often used in places with hygiene requirements such as the pharmaceutical industry, food industry, and biochemistry.

Electromagnetic flowmeter product features:

Two-way measurement system.
The straight pipe section required by the sensor is shorter, and the length is 5 times the pipe diameter.
Low-pressure loss
The measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity
Mainly used in sewage treatment.

Vortex flow meter

The vortex flowmeter is a meter in which a non-streamlined vortex generator is placed in the fluid, and the fluid is alternately separated on both sides of the generator to release two series of regularly staggered vortices. When the flow cross-section is constant, the flow velocity is proportional to the volume flow. Therefore, the flow can be measured by measuring the oscillation frequency.

Application: The vortex flowmeter has developed rapidly and has become a general-purpose flowmeter.

Vortex Flowmeter Product Features

The structure is simple, firm, no moving parts, high reliability, and reliable long-term operation.
The installation is simple and the maintenance is very convenient.
The detection sensor does not directly contact the measured medium, with stable performance and long life.
The output is a pulse signal proportional to the flow rate, with no zero drift and high accuracy.
The measurement range is wide, and the range ratio can reach 1:10.
The pressure loss is small, the operating cost is low, and it is more energy-saving.

Extended reading: Threaded Vortex Nitrogen Gas Flow Meter

Mass flow meter

The principle of flow is directly related to the measurement; the indirect mass flowmeter is indirectly multiplied by the density meter and the volume flow to obtain the mass flow.

Application:
In the case of high temperature and high pressure in modern industrial production, the application of direct mass flowmeter encounters difficulties due to factors such as material and structure;
However, indirect mass flow meters are not suitable for practical applications due to their density being limited by the scope of application of humidity and pressure.

Mass flow meter product features:

No mechanical transmission mechanism, small size, lightweight, easy to maintain
High precision
No moving parts inside, good stability
Wide range ratio, much better than other traditional instruments

Read more about: Gas Thermal Mass Flow Meter

Ultrasonic flow meter

The ultrasonic flowmeter is designed based on the principle that the speed of ultrasonic propagation in the flowing medium is equal to the geometric sum of the average flow velocity of the measured medium and the speed of the sound wave itself. It also reflects the flow rate by measuring the flow rate. Ultrasonic flow meters can be divided into time difference type and Doppler type according to the measurement principle.

Application:

The propagation time method is applied to clean, single-phase liquids and gases. Typical applications include factory discharge liquid, strange liquid, liquefied natural gas, etc.;
Gas application has good experience in the field of high pressure natural gas;

The Doppler method is suitable for two-phase fluids with low heterogeneous content. Such as untreated sewage, factory effluent, and dirty process fluids, it is usually not suitable for very clean liquids.

Guess You’ll Like: Ultrasonic flow meters types & technical guide

Target flow meter

Features

The whole instrument has a solid structure and no moving parts, plug-in structure, easy to disassemble
The dry calibration method can be used on the spot, that is, the weight hanging method is used.
With integrated temperature and pressure compensation, directly output quality or standard
The measuring range can be changed by replacing the baffle (target) according to actual needs
Strong vibration resistance, pulsating flow can be measured within a certain range.

Differential pressure flow meter liquid flow metering

The differential pressure flowmeter is a meter that calculates the flow rate based on the differential pressure generated by the flow detection element installed in the pipeline, the known fluid conditions and the combined size of the detection element and the pipeline.

Application: Differential pressure flowmeter has a wide range of applications, and various objects have applications in the flow measurement of closed pipelines.
Such as fluid: single-phase, miscible, clean, dirty, viscous flow, etc.;
Work: normal pressure, high pressure, vacuum, normal temperature, high temperature, low temperature, etc.;
Pipe diameter: from a few millimeters to a few meters; flow: subsonic speed, sound speed, pulsating flow, etc.
Its consumption in various industrial sectors accounts for about 1/4 to 1/3 of all flow meters.

The most commonly used liquid differential pressure flowmeter is the orifice flowmeter.

Product features of orifice flowmeter:

The structure of the throttling device is easy to replicate, simple, firm, stable and reliable in performance, long in service life and low in price.
Wide application range, all single-phase flow can be measured, and part of mixed-phase flow can also be applied.
The standard throttling device can be put into use without real flow calibration.
The integrated orifice plate is simpler to install, no pressure pipe is needed, and it can be directly connected to a differential pressure transmitter and a pressure transmitter.

Oval gear flowmeter

Features

It relies on the pressure head of the measured medium to push the oval gear to rotate for measurement.
The greater the viscosity of the medium, the smaller the leakage from the gear and the metering gap. Therefore, the larger the sticky skin of the nuclear test medium, the smaller the leakage error, and the more beneficial it is for measurement.
It is suitable for the measurement of the flow of high-viscosity media, but not for fluids containing solid particles (solid particles will jam the gear so that the flow cannot be measured). If the measured liquid medium contains gas, it will also cause measurement errors.

Positive displacement flow meter

Positive displacement flow meter, also called fixed displacement flow meter, PD flow meter for short. It is the most accurate type among flow meters. It uses mechanical measuring elements to continuously divide the fluid into individual known volume parts. The total volume of fluid is measured according to the number of times that the measuring chamber is filled and discharged with this volume of fluid one after another.

Application: Positive displacement flow meters, differential pressure flow meters, and float flow meters are listed as the three most used flow meters. They are often used for total measurement of expensive media (oil, natural gas, etc.).

Float flow meter

Float flowmeter, also known as rotameter, is a kind of variable area flowmeter. In a vertical cone tube that expands from bottom to top, the gravity of the float of circular cross section is borne by the hydrodynamic force, so that the float can be Rise and fall freely in the cone.

Application: Float flowmeter is the most widely used type of flowmeter after differential pressure flowmeter, especially in small and micro flow.

Features of Rotameter:

The most commonly used flow meter in industry and laboratories.
The structure is simple, intuitive, low-pressure loss and convenient for maintenance.
It must be installed on a vertical pipe section, and the fluid medium passes through the rotameter from bottom to top.

Extended reading: Liquid mass flow controller

Liquid Flow Meters Selection Guide

If from the upper part of this article, you do not know how to choose a suitable liquid flow meter. Then, you can follow our selection suggestions below.

Step 1: Confirm your liquid condition.

Before choosing a flow meter, you should sort out the details of your measured liquid.
such as:

Liquid name
Liquid temperature
Pipeline pressure
Liquid viscosity
Corrosive
Flow rate range
Pipe diameter

If you need to measure liquids under special circumstances, you can skip to the following:
Low temperature: Gear flow meter: High and low-temperature resistance (-196℃-200℃).
High viscosity: Oval Gear High Viscosity Flow Meter
Fuel: Industrial Fuel Flow Meters

Step 2: Identify your measurement needs.

The flow meter is designed to meet your measurement needs. Therefore, according to your needs, determine the function of the flowmeter. such as:

Measure volume flow or mass flow?
Is it necessary to display the instantaneous flow and cumulative flow locally?
What kind of signal output is needed? 4-20mA? Pulse?
What kind of installation form and size are planned? Such as ANSI150 flange? Outside clip?

Most liquid flow meters measure volumetric flow. If what you need is mass flow, you can jump to: Mass Flow Meters

If you are unwilling to change the pipeline, you can only choose to install the ultrasonic flowmeter with an external clamp.

Step 3: select the appropriate flow meter type.

Up to now, there may be many types of flow meters suitable for your measurement situation. Then you need to filter the flowmeter according to your pipe diameter and flow range.

For example, you need to measure the flow of milk. 2-inch pipe. Then you can refer to the flow range to select the appropriate flow meter.
2 inches, electromagnetic flowmeter, 2.21~35.35m³/h;
2 inches, turbine flowmeter, 4~40m3/h.

For example, what you need to measure is the water flow of a DN1000 pipeline. Then it is recommended that you choose the insertion electromagnetic flowmeter.

Step 4: Except for dedicated flow meters.

Under normal circumstances, when measuring some specific media, we will recommend a specific type of flowmeter.
such as:
Measure sewage, use an electromagnetic flowmeter.
To measure diesel oil, use a turbine flowmeter.

Step 5: Contact the manufacturer

The above liquid flow meter selection steps and selection suggestions are based on certain experiences.
If you are a newcomer, you are not sure about the above process. You can directly contact Sino-Inst sales engineers. We will provide you with the best advice.

Step 6: Combine the budget

According to your budget, choose the right liquid flow meter.
For example, you need to measure the water flow. Normally, you can choose an electromagnetic flowmeter or ultrasonic flowmeter. Then you can choose according to your budget.

Such as 2inch pipeline, DN50 electromagnetic flowmeter, USD 484.50/pc
With external clamp ultrasonic flowmeter, USD 423.00/pc

For example, 4inch pipe, DN50 electromagnetic flowmeter, USD 784.50/pc
With external clamp ultrasonic flowmeter, USD 423.00/pc

Of course, the above is our experience. It’s not absolute.

You may need the following traffic conversion tools to help you.

Extended reading: U-series Liquid Mass Flow Meter | Liquid-slurry flow measure

Liquid Flow Tools

Converters for conversion and calculation of flow. Or a calculation tool that requires flow measurement to obtain other measurement parameters. Help users choose the right flow sensor and transmitter!

DP Flow Meter Output Calculator	Flow Meter 4-20mA Current Output Calculator	Flow Velocity & Pipe Diameter to Volumetric Flow Rate Calculator
Mass Flow & Density to Volume Flow Calculator	Mass Flow Rate Unit Converter	Volume Flow Rate Converter
Volume Flow & Density to Mass Flow Calculator	Volumetric Flow Rate & Pipe Diameter to Flow Speed Calculator

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FAQ

How does a liquid flow meter work?

Liquid flow meter can be divided into the following categories according to the measurement principle:
Mechanics principles: instruments that fall into this category include differential pressure type and rotor type using Bernoulli’s theorem; impulse type and movable tube type using momentum theorem; direct mass type using Newton’s second law; using fluid momentum principle Target type; turbine type using the angular momentum theorem; vortex type and vortex type using the principle of fluid oscillation; pitot tube type using total static pressure difference, volume type, weir, trough type, etc.
Electrical principle: The instruments used for this kind of principle include electromagnetic, differential capacitive, inductive, strain resistance, etc.
Acoustic principle: There is an ultrasonic method for flow measurement using the acoustic principle. Acoustic (shock wave) etc. Thermal principle: There are calorimetric, direct calorimetry, indirect calorimetry, etc. that use the thermal principle to measure flow. Optical principle: laser type, photoelectric type, etc. are instruments of this type of principle. Principles of atomic physics: nuclear magnetic resonance, nuclear radiation, etc. are instruments that belong to this type of principle. Other principles: There are marking principles (tracing principles, nuclear magnetic resonance principles), related principles, etc.

What is a flow meter used for?

A meter that indicates the measured flow rate and/or the total amount of fluid in a selected time interval. Simply put, it is an instrument used to measure fluid flow in pipes or open channels.

Where should a flow meter be placed?

Most in-line flow meters are inline flow meters. They are all connected with the pipeline under test. Connect by flange, thread, etc.
The Insertion flowmeter is installed on the pipe under test by plug-in type. Suitable for larger pipe diameters.
Clamp-on flowmeter. The sensor is clamped outside the pipe for flow measurement.

Sino-Inst offers over 30 Liquid Flow Meters products. About 50% of these are differential pressure flow meters. 40% are water meters (like the Insertion Turbine Flow Meter), and 40% are water treatment (like the Annubar flow meter ).

A wide variety of Liquid Flow Meters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Liquid Flow Meters, located in China.

The top supplying country is China (Mainland), which supply 100% of the Liquid Flow Meters respectively.

Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Liquid Flow Meters products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

KimGuo11

drurylandetheatre.com

Industrial Tank level indicators and Tank Level Gauges

Posted on November 11, 2020 by KimGuo11

Tank level indicators are level gauges that can measure and display the level of industrial liquid storage tanks. Liquid level refers to the level of liquid in a sealed container (for example oil/fuel tank) or an open container (water tank).

In industrial production, it is often necessary to know the liquid level in the storage tank. The liquid level sensor converts the liquid level signal in the container into a switch signal or a voltage and current signal. Then through the external circuit, the measurer can intuitively know the liquid level in the container. There are many types of Liquid level indicators. By reading this article, you will know what kind of level indicators is best for your tank.

Sino-Inst offers a variety of Tank level indicators for level measurement. If you have any questions, please contact our sales engineers.

Request a Quote

More level indicators

Featured Tank Level Indicators and Gauges

Hydrostatic Tank Level Indicators

Hydrostatic level measurement is based on the principle that the Hydrostatic is proportional to the height of the liquid. Hydrostatic submersible pressure level transmitter is the most commonly used level measurement sensor. Of course, the differential pressure transmitter can also measure the liquid level.

A hydrostatic level sensor is a submersible pressure transmitter that has a pressure diaphragm at the end of level probe. A hydrostatic level sensor is a submersible pressure transmitter that has a pressure diaphragm at the end of level probe. This Hydrostatic is caused by the weight of the fluid on top of the transmitter and is used to calculate the level. And the inner side of the diaphragm is vented to atmospheric pressure.

**SI-151 Hydrostatic Level Sensor**
Hydrostatic Level Sensor (Best Price), also called Hydrostatic level transmitter. Continuous level measurement in liquid applications with pressure sensors.

**SI-PCM261 Submersible Pressure Transducer**
Submersible pressure transducer with 4-20mA output,
is normal submersible pressure transmitter for level measurement.

**SMT3151TR Submersible Level Transmitter**
Hydrostatic level transmitter is also called hydrostatic level gauge. The rod-type Hydrostatic level transmitter 4-20mADC standard signal output. Flange or threaded installation. Can withstand high temperatures up to 450 ℃.

Hydrostatic Level Indicators are suitable for measuring unsealed tanks. The applicable media of Hydrostatic Level Indicators include water, oil, etc. Hydrostatic Level Indicators are the lowest cost Tank Level Indicators.

Pressure/differential pressure Tank Level Measurement

Pressure/differential pressure Tank Level Indicators refers to Diaphragm Seal Pressure Transmitters. Usually installed at the bottom of the outer tank.

Diaphragm Seal pressure transmitter can measure pressure, liquid level and flow.When the environment is extremely hot or cold, or when the process connection is difficult to connect to the measuring instrument. When the measured medium is corrosive, sticky, sticky or easily cured. Or when the process is not chemically compatible with the instrument material. It is recommended to use a diaphragm seal.

Flange Mounted Differential Pressure Transmitter

Extended Diaphragm Seal DP Level Transmitter

Differential pressure(DP) level transmitter

Pressure/differential pressure Tank Level Indicators are often used to measure liquid tanks with harsh medium conditions. Such as chemical liquids. High-temperature liquids, etc. The measuring instrument should not be placed in the tank, or the medium cannot touch the sensor.

Extended reading: Hydrostatic Pressure Transmitter

Magnetic Float Level Sensors for Tank Level

A float level sensor is a kind of continuous liquid level measurement sensor. Also called float level switch, float level gauge, float level transmitter.

Float level sensors are continuous level sensors. Float level gauges use magnetic floats as measuring elements. magnetic float that rises and falls as liquid levels change. The movement of the float will generate a magnetic field. The sensor’s internal resistance changes linearly, and the intelligent converter converts the resistance change into a 4~20mA standard current signal. It can display the liquid level percentage, 4~20mA current, and liquid level value on the spot. It can also output the switching value signal to conduct liquid Bit switch control.

**SI-U02 Multi-Point Liquid Level Float Switch**

**SI-U03 Float Switch Water Level Controller**

**SI-U04 Magnetic Float Level Sensor-Reed Switch**

Magnetostrictive Level Transmitters for continuous Tank Level Measurement

Magnetostrictive Level Transmitters are used for continuous measurement of liquid level and interface. Magnetostrictive level measurement is currently the best liquid level measurement and control technology.

Sino-Inst’s Magnetostrictive Level Transmitters can provide two independent outputs: interface; overall level. It can be applied when the difference in specific gravity drops to 0.02. Magnetostrictive Level Sensors Commonly used for the measurement of the oil-water interface. And others include acid tanks, propane containers, desalter and sewage tanks. Magnetostrictive Level Transmitters are composed of three parts: probe rod, circuit unit and magnetic float. The flexible cable type and the outer buoy type are derived from the basic model. And has a variety of communication modes 4~20mA, 0~5V, 0~10V, HART, RS-485 and so on.

LD series Rigid Probe Magnetostrictive Level Transmitter

LR series Integral flange Magnetostrictive level sensor

LT series Digital Display Magnetostrictive liquid level sensor

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Magnetic Level Gauge for Tank Level Indicate

Magnetic Level Gauge can be widely used in petroleum, chemical, oil field, medicine, food, wine and other industries. Various storage tanks, reaction tanks, fermentation tanks, liquid ammonia storage tanks, boiler drums, high-pressure heaters, evaporators and other pressure vessels. Medium liquid level compatible with 304, 321, 316L, 0Cr18Ni9, 304 or 0Cr18Ni9+PTFE, 00Cr17Ni14Mo21Cr18Ni9Ti, PVC, PP and other materials. Even two different media interface measurement and display.

Magnetic Level Gauge can be reliably used for liquid level detection in high temperature, low temperature, high pressure, strong corrosion, highly toxic and dangerous environments.

Extended reading: Diesel fuel tank level gauges & indicators

Radar Measurement of Tank Level

Radar level transmitters use radar technology to perform non-contact continuous level measurement. The radar level indicator converts the level into an electrical signal. The level signal output can then be utilised by other instrumentation to monitor or control. Liquids and solids are commonly measured with this measuring technique. Like: Fly ash silo. Radar level sensors are divided into: Pulsed radar technology and frequency modulated continuous wave (FMCW) radar level sensors.

Sino-Inst produces 120GHz FMCW radar level sensor, 26GHz radar level meter, 6GHz level meter.

**SI-FMF13 FMCW Radar Water Level Sensor**

**SIRD-901 Radar Corrosive Liquid Chemical Level Sensor**

**SIRD-906 Radar Sanitary Level Sensor**

**SIRD-803 Radar Oil Tank Level Sensor**

Extended reading: Non Contact Liquid Level Sensor Working Principle

Ultrasonic Tank Level Indicators

Ultrasonic Level Sensing is a low-cost liquid level measurement technology. Ultrasonic Level Sensing sensors and transmitters are used for tank or river level measurement.

Extended reading: Ultrasonic liquid level sensors

Ultrasonic Level Sensing does not need to contact the medium, can be continuously measured, low cost. Therefore, Ultrasonic Level Sensing is very popular among users.

Ultrasonic liquid level sensors are available in general and intrinsically safe types. Output 4~20mA standard signal or output the measurement result to the secondary meter through RS-485. Meets the system’s automatic control.

Extended reading: ultrasonic level sensor price

**ULT-100A Ultrasonic Level Transducer**

**HS-ULC Ultrasonic Level Switch-External Mounted**

Tank level indicators for common tanks

Water tank level indicator

Water tank level monitoring is the most common application of Tank level indicators.

Common water, purified water, application water, etc. Less impurities. If the tank is not sealed. It can be applied to the hydrostatic input level gauge. The lowest cost. The easiest to use.

Of course, if the tank is sealed. Or there are impurities in the water. A diaphragm seal differential pressure level transmitter can be used.

According to your actual measurement installation situation, you can also choose other applicable Tank level indicators and Tank Level Gauges.

Propane tank level indicator

Propane is a gas that can be liquefied. Chemical formula CHCHCH, colorless, liquefiable gas. Slightly soluble in water, soluble in ethanol and ether.

Common Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement include: radar level sensor; magnetostrictive level sensor; float level gauge; magnetic flap level gauge; ultrasonic level gauge.

What kind of level gauge is used for Industrial propane level measurement?

Please refer to:

5 Industrial Propane Tank Level Indicators

Fuel & oil tank level indicator

Measure the level of oil storage tanks. We recommend the use of a magnetostrictive level gauge or an externally attached ultrasonic level sensor.

Advantages of magnetostrictive level gauge for measuring oil tank level:

The magnetostrictive liquid level gauge can simultaneously measure multiple parameters such as liquid level, interface level, and temperature.
The measurement range is large, and the maximum measurement range can be 20m.
Measurement grade products, high measurement accuracy, can reach up to ±1mm.
Using pure electronic technology to measure, so there is no wear, safe and reliable, and long service life
The measurement accuracy is not affected by factors such as the shape of the container and the steam in the container.
No need for regular calibration, easy installation and maintenance without tank cleaning.
Multiple signal output, easy to realize the monitoring function of the system.
The product design meets the requirements of explosion-proof standards, and achieves explosion-proof and intrinsically safe certification.

Extended reading: Capacitance level sensor advantages and disadvantages

Advantages of Ultrasonic Tank Level Sensor-External Mounted

Non-contact measurement function ——– Ultrasonic sensor probe is external. No need to open a hole in the container to be tested.
Auto-calibration function——–With self-calibration function. It overcomes the problem of reduced accuracy after long-term use of traditional liquid level gauges.
Infrared online debugging function——–Applicable to occasions where it is not suitable to open the cover for testing in dangerous situations. At the same time, it reduces the difficulty of debugging.
Self-diagnosis function——–It has its own working status diagnosis function. It also has hardware diagnosis function. It enhances the reliability and stability of the level gauge.
One-key recovery function——–When the external measuring level gauge works abnormally, it can be restored to the normal state with one key through the debugger.
Local display and remote transmission function——–The level gauge can not only display the level value on the spot in time. But also remotely transmit it to the control room through the signal line.

Extended reading: GWR Corrosive Liquid Chemical Level Sensor

large water tank level indicator

In industrial production, water tanks are widely used. In many production equipment, the measurement and control of the water tank level is directly related to the normal operation of the process production process. At present, there are many methods for measuring and controlling the liquid level of the water tank, each with its own strengths.

If the site is an open tank, it needs to have a remote transmission function. If there is no requirement for a scale, it is recommended to use a submersible level gauge. The cost is low. The principle of cable-type diffusion silicon. Simple and easy to use. , 24V power supply.
If the site needs to have a scale and a remote transmission function. That is to use a magnetic float level gauge with a remote transmission function. That is, the liquid level can be displayed on site. And the liquid level can be transmitted to the control room or PLC for display.
Pressure type liquid level transmitter. This is also the simplest principle of using pressure to display the liquid level height. It is installed at the bottom of the side-loading tank. 24V power supply.
Ultrasonic level gauge. When the ultrasonic level gauge is used, there should be no foam on site. Otherwise, the display will be inaccurate. The clean water pool can be used.

These are all very simple level gauges. But in fact, they still need to be selected according to the working conditions. Before purchasing, it is best to ask the manufacturer.

Read more about: Types of water level controller

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If you need to measure the tank level. But you still don’t know how to choose suitable Tank level indicators and Tank Level Gauges, please contact Sino-Inst sales engineer.

Sino-Inst offers over 30 Tank level indicators and Tank Level Gauges for level measurement. About 50% of these are Radar level meters, 40% is the magnetic level sensor.

A wide variety of Tank level indicators and Tank Level Gauges for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Tank Level measurement instrumentation, located in China.

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drurylandetheatre.com

Nominal Diameter (mm)	Flow range(m3/h)
	Viscosity
	0.3~0.8mPa·s	0.8~2mPa·s	2~8mPa·s	8~200mpa.s
10	0.2~0.4	0.15~1.5	0.1~0.5	0.08~0.5
15	0.75~1.5	0.65~1.5	0.3~1.5	0.25~1.5
20	1.5~3	1~3	0.6~3	0.5~3
25	3~6	2~6	1.2~6	1~6
40	7.5~15	5~15	3~15	2.5~15
50	12~24	8~24	4.8~24	4~24
65	20~40	15~40	8~40	6.5~40
80	30~60	20~60	12~60	10~60
100	50~100	34~100	20~100	16~100
150	95~190	64~190	38~190	32~190
200	170~340	180~340	68~340	56~340

High viscosity liquids

Oval Gear High Viscosity Flow Meter

Oval gear flowmeter display mode selection:

How to choose a high viscosity flow meter?

1. Oval gear flowmeter

2. Ultrasonic flowmeter

3. Electromagnetic flowmeter

4. Target flow meter

5. Mass flow meter

6. Gear Flow meter for small flow

Measuring principle of Oval Gear High Viscosity Flow Meter

Installation and use of Oval Gear High Viscosity Flow Meter

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Features of Pointer Type Oval Gear Flow Meter

Specifications of Pointer Type Oval Gear Flow Meter

Oval Gear Flow Meter Flow Range

Pointer Type Oval Gear Flow Meter Applications

Structure and working principle of Oval Gear Flow Meter

Oval gear flow meter price

FAQ

What is oval gear flow meter?

What are the different types of flow meters?

What is volumetric flow meter?

Featured Volumetric Flow Meters

What is volumetric flow rate ?

What is mass flow rate ?

What is the difference between mass flow and volumetric flow?

Mass Flow vs. Volumetric Flow Meters

Various Types of Mass Flow and Volumetric Flow Meters

Types of Volumetric Flow Meters

Examples of Mass Flow Meters

Volumetric flow meter working principle

mass flow rate vs volume flow rate

How to convert Mass Flow Rate & Volumetric Flow Rate

More Featured Liquid and Gas Flow Meters

Frequently Asked Questions

Liquid and Gas Flow Measurement Solutions

User Guide

Pabs – Absolute Pressure

Pbaro – Barometric Pressure

Pgauge – Gauge Pressure

Featured Liquid Turbine Flow Meters

Types of Turbine Flow Meter

Different measuring medium

Different output signal

What liquids can be measured by Liquid Turbine Flow Meters?

Turbine flow meter Advantages and Disadvantages

Turbine Meter Advantages

Turbine Meter Disadvantages

What is k factor in turbine flow meter?

How to get k factor on turbine flow meter?

How to Calibrate a Turbine Flow Meter?

High Pressure Turbine Flow Meter

Turbine Flow Meter Price

FAQ

How do I choose a flow meter?

What is water flow meter?

What is target flow meter?

What is a cryogenic flow meter?

Cryogenic Fluid

Featured Cryogenic Flow Meters

Cryogenic Turbine Flow Meter

Cryogenic Mass Flow Meter

Orifice flowmeter for cryogenic fluid

Target flowmeter for cryogenic fluid

How does a cryogenic flow meter work?

Liquid Nitrogen-Liquid Oxygen-Liquid Co2 Flow Meter

Frequently Asked Questions

What is turbine flow meter?

What is the purpose of the flowmeter?

What is the most accurate flow meter?

What is a CO2 flow meter?

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Frequently
Asked
Questions

P_abs – Absolute Pressure

P_baro – Barometric Pressure

P_gauge – Gauge Pressure

Frequently
Asked
Questions

Frequently
Asked
Questions