Yearly Archives: 2021

Guide for Liquid level float switches

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Liquid level float switch is a commonly used liquid level controller. For water Tank & Pump alarm and level control. Can be divided into Continuous Float Level Sensor and Point Level Float Switch.

Purchasing Guide for Liquid level float switches

Liquid level float switch are sensors with an electrical contact output at a specific liquid level. Floats with permanent magnets. Single or multi point level indicator. Can choose stainless steel or anti-corrosion material. It is suitable for exploratory testing of the limit of liquid in small containers (boxes, barrels, cylinders, etc.).

Sino-Inst offers a variety of Liquid level float switches for level measurement and control. If you have any questions, please contact our sales engineers.

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Float Level Sensors

Featured Liquid level float switches for sale

SI-U05 Cable Float Level Sensor & Swtich
SI-U02 Multi-Point Liquid Level Float Switch
SI-U03 Float Switch Water Level Controller
SI-U04 Magnetic Float Level Sensor-Reed Switch
SI-U01 Float Level Sensor

Know more about Liquid Level Switch

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

In terms of form, it is mainly divided into contact type and non-contact type.

Commonly used non-contact switches include capacitive liquid level switches, and contact float-type liquid level switches are the most widely used. Electrode liquid level switches, electronic liquid level switches, and capacitive liquid level switches can also be realized by contacting methods.

Continuous Float Level Sensor

The floating ball continuous level gauge uses the floating ball to move up and down with the liquid to trigger or release the reed switch in the tube, and output 4-20mA or other different standard models through circuit processing.

With multi-interface measurement, easy to install, and corrosion-resistant, it can meet most measurement needs. Suitable for various tanks and tank level measurement, optional on-site display.

Point Level Float Switch

The float level switch uses a magnetic float to rise or fall with the liquid level. The sensor detects the reed switch chip at the set position in the tube, and sends out a contact opening (closing) conversion signal.

One or more dry reed pipes are installed in the closed non-magnetic pipe. Then the pipe passes through one or more hollow floats with ring magnets inside. The rise or fall of the liquid will drive the floating ball to move up and down together. Then the reed tube in the non-magnetic tube will pull on or off, and then output a switch signal.

According to needs, one or more liquid level switch points can be set.

Whether it is Continuous Float Level Sensor or Point Level Float Switch, they all need to be in contact with the medium.

However, in some cases, we need to measure and control the liquid level without contacting the medium. Then we can consider the following liquid level sensors.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

How does a liquid level float switch work ?


Liquid level float switches are liquid level controllers that use one maglev ball or multiple maglev balls to send out multi-point switch signals.
Reed pipes are installed at different heights in the guide rod. When the maglev ball floats up and down as the liquid level changes. The magnetic steel in the floating ball makes the reed pipe at the corresponding position in the guide rod pull on or off, and send out a switch signal.

Read more about: 7 Level Senors for Tank Level Measurement

Explosion proof float switch

The explosion-proof float level switch is also called the explosion-proof float level controller. It is a liquid level control instrument specially designed and manufactured for use in explosive environments. Explosion-proof type ExdⅡBT4; intrinsically safe type ExiaⅡCT6.

Principle of explosion-proof float level switch:

①The mechanical strength conditions of the enclosure. That is, the shell has enough strength to withstand the internal explosion pressure without damage. And it does not produce permanent deformation that affects the explosion-proof performance.

②Control the conditions of non-detonation in the gap of the joint. That is, the shell joint surface has a sufficiently small gap and a sufficiently long engagement length. Explosive products (hot flames or particles) inside will not escape the shell and ignite the explosive mixture in the surrounding environment.

The principle of intrinsically safe explosion-proof technology is to start with limiting energy and reliably limit the voltage and current in the circuit to an allowable range. In order to ensure that the electric spark and thermal effects generated by the instrument in normal operation or short-circuit and component damage, etc., will not cause dangerous gases that may exist around it. It is actually a low-power design technique.

Multi-level float switch

Multi level float switch is also called multi point level switch. Support 1-4 liquid level measurement switch point customization.

Multi level float switch is a custom multi point float level sensor & switch. These versatile level switches are available in many materials. Like: Stainless Steel, Brass & Buna, PVC, Polypropylene or PTFE and can be ordered with an integrated temperature sensor. Use these multi-level float switches with a tank level alarm or liquid level control relay for a turnkey solution. Explosion-proof available.

Vertical liquid level float switch & horizontal liquid level float switch

Vertical liquid level float switch refers to the float level switch installed in the vertical direction. It is usually installed on the top of the tank through flanges or threads. Keep it vertical.

Horizontal liquid level float switch refers to a float level switch installed from the horizontal direction, or from the side.

Float switches for water tanks

In water treatment, the float level switch of the water tank is directly related to the safety and reliability of the entire process.

In a process, there are different types such as intermediate water tank, backwash water tank, produced water tank and waste liquid tank. The sizes of these boxes are different. The volume of the produced water and the original water tank may be larger.

In these water tanks, the water tank float level switch is used for related control. Different liquid level switches will have different actions. However, it is not necessary to have several level switches in a large water tank.

In the water tank, there are high and low level switches. The high level switch can detect if the water tank is full. If it is full, stop producing water. The low level switch is used to detect whether the water in the tank is sufficient. If there is not enough water, no more water can be sent out.

FAQ

What is float level switch?

The float level switch is a kind of level switch. The float level switch uses magnetic force to operate. No mechanical connections. The operation is simple and reliable. When the float switch floats the measured medium, the float moves the main body. At the same time, the magnet on the other end of the float will control the magnet on the switch action lever.

What is a liquid level switch?

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

How does a float level sensor work?

Float level sensor: Float level sensor is designed and produced based on the principle of buoyancy and static magnetic field. The position of a floating ball with a magnet (floating ball for short) in the measured medium is affected by buoyancy. The change of the liquid level causes the position of the magnetic float to change. The role of the magnet and sensor (reed switch) in the floating ball changes the number of components (such as fixed resistance) connected in series to the circuit. Thereby changing the electrical quantity of the instrument circuit system. That is, changes in the position of the magnetic float cause changes in the electrical quantity. The change of the electrical quantity is detected to reflect the liquid level in the container.
The float level sensor is installed on the top of the container through a connection flange. The float ball floats on the liquid surface according to the principle of discharging the liquid volume phase and so on. When the liquid level of the container changes, the float ball also moves up and down. The reed switch of the ball level gauge is magnetically attracted to change the position of the liquid level into an electrical signal. The actual position of the liquid is displayed digitally by the display instrument. The floating ball level gauge can achieve long-range detection and control of the liquid level.

How do I test a float switch with a MultiMeter?

Turn on the power of the multimeter and set the multimeter to the continuity test position. The test multimeter displays 1, indicating that the test leads are disconnected.
Place the pointer of the multimeter, one wire is gently placed on the wire-in end of the switch terminal, and the other wire is lightly placed on the wire-out end of the switch terminal. If the display is 0, it means that the two terminals are connected to the normal terminal. close.
At this time, we keep the terminal still, slightly press the micro switch, and observe the universal indicator at this time, it becomes 1, which means that the switch is connected to the line, indicating that the micro switch is normal.
In the same way, we test the other two wiring terminals of the micro switch, as shown in the figure:
When no pressure is applied to the micro switch, the display is 1, indicating that the two terminals are normally open.

Sino-Inst offers over 10 Liquid level float switches – Single and Multipoints for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Liquid level float switches – Single and Multipoints options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Liquid level float switches – Single and Multipoint instrumentation, located in China.

Hot Water Flow Meters

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Hot Water Flow Meters Improve Heating-Boiler System

Hot water flow meters refer to flow meters that can measure and indicate the flow of high temperature water. Hot water is widely used in industry and civil use. Such as heating systems, baths, boilers, industrial indirect heating, heat transfer, etc. There are many types of water flow meters. Some of the most common types include electromagnetic flow meters, turbine flow meters, and vortex flow meters. These meter types have unique features that distinguish them from each other. According to the function of the hot water flow transmitter and the user’s budget. You can choose a suitable flow meter to monitor the hot water pipeline.

RFQ More Flowmeters

Features of Hot Water Flow Measurement

What are the characteristics of hot water flow measurement? Let’s take a look.

  1. The temperature of the measured fluid is not very high. When the flow meter is installed at the entrance of the heat exchanger body. The temperature of the fluid is generally not higher than 140°C. When the liquid outlet of the heat exchanger is installed, the flow temperature is lower.
  2. The measured fluid pressure is not very good either. In order to send hot water to the highest floor in the building heating system, the pressure is sometimes higher. In the ground heating system, the highest pressure is 1MPa.
  3. The pipe diameters vary in size. The smallest user, the pipe diameter is only DN20~DN40. The large-diameter flowmeter sometimes reaches about 1m.
  4. Better cleanliness. Hot water is not as clean as tap water. The solid matter in the single water and its viscosity will not have a big impact on the general flowmeter.
  5. Corrosive. Fresh water does not corrode the flowmeter. However, geothermal water has a certain degree of corrosion. Because it contains chloride ions and so on. Ordinary stainless steel materials are corroded, and the higher the fluid temperature, the more severe the corrosion.
  6. The requirement for scope is not high. The pumps used in power plants (stations) to deliver hot water are generally combined in size. When the hot water supply is at its maximum, usually several large pumps are opened. When the heat supply is the smallest, generally only a small pump is turned on. The ratio of the maximum flow rate to the minimum flow rate is about 5~10. A flow meter for heat measurement of a single user. In the heating season, the flow measurement range of up to 10 can meet the demand. After the hot water valve is turned off, the market value of the flow should be 0.

Extended Reading: Insertion Flowmeter Types

Hot Water Flow Meter Types

Hot water is the most widely used heat carrier liquid. Due to the difference in use and design, the water supply temperature is commonly used in several grades such as 60℃, 90℃, and 130℃. There are fresh water and geothermal water in the varieties of water. The temperature of geothermal water cannot be determined independently, but it must be above 60°C to have use-value. Flow Meter Selection Guide 101: Find the Perfect Fit for Your Application

Magnetic Water Flow Meter provide highly accurate flow measurements for a wide variety of conductive fluid applications. Magnetic Water Flow Meter is a volumetric flow meter that measures liquids or liquid slurries that have a minimum conductivity of 5 µS/cm.

An electromagnetic flowmeter is an ideal instrument for hot water flow measurement. Its significant advantages are as follows.

  • The pressure loss is negligible. Because the inner diameter of the measuring pipe is the same as that of the pipe.
  • From small to large caliber, the series is complete.
  • The measurement accuracy is high, and the high accuracy can still be achieved when the flow rate is very low.
  • The temperature grade can meet the needs. Among them, the temperature resistance rating of 120°C can meet the measurement needs of most objects. The temperature resistance rating of 180°C can meet the needs of measurement objects with fluid temperatures higher than 120°C.
  • The pressure level can meet the measurement needs. In the electromagnetic flowmeter product sample, the pressure level of the finalized large-caliber electromagnetic flowmeter can only reach 0.6-1MPa. But it can be used as a special order to meet the requirements of objects with higher pressure.
  • Corrosive series products. Geothermal hot water has different corrosive properties due to different production areas. For geothermal hot water containing chloride ions, electromagnetic flowmeters with PTFE lining and titanium electrodes have met the needs.
  • Strong adaptability to the vibration of the pipeline and the environment.
  • It can measure pulsating flow with low pulsating frequency.

Extended reading: 2 inch Water Flow Meter

The turbine flow meter for hot water can measure soft water, soft water and RO water. These are the main water types best suited for turbine flow meters. The maximum hot water temperature of the turbine flowmeter is 150 degrees Celsius.

Turbine flowmeters are based on the principle of torque balance and belong to velocity flow meters. It is widely used in petroleum, chemical, metallurgy, water supply, papermaking and other industries. It is an ideal instrument for flow measurement and energy saving.

  • The function of the turbine flowmeter as a hot water flow meter:
  • High accuracy. Generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
  • The repeatability is good, and the short-term repeatability can reach 0.05%~0.2%. It is because of the good repeatability, such as frequent calibration or online calibration can get extremely high accuracy. It is the preferred flowmeter in trade settlement;
  • Output pulse frequency signal. Suitable for total measurement and connection with computer. No zero drift, strong anti-interference ability;
  • High frequency signals (3-4kHz) can be obtained. Strong signal resolution;
  • Wide range, medium and large diameters can reach 1:20, and small diameters are 1:10;
  • The structure is compact and light. It is convenient to install and maintain, and has a large circulation capacity;
  • Suitable for high-pressure measurement. No holes are required on the meter body, so it is easy to make a high-pressure meter;
  • There are many types of sensors. Various types of sensors can be designed according to the special needs of users, such as low temperature type, two-way type, downhole type, sand mixing type, etc.;
  • It can be made into a plug-in type, suitable for large-caliber measurement. The pressure loss is small, and the price is low.

Extended Reading: Metal Tube Flow Meter Applications

Use a vortex flowmeter to measure hot water. The pipe diameter of the boiler feed water is below 300mm, which is exactly the pipe diameter range of the full-tube vortex flowmeter.
Different from measuring steam, when measuring hot water, the installation of vortex flowmeter should ensure that the pipe is full and there is no air. The horizontal installation is suitable for the lowest point. When vertical installation, the hot water should flow from bottom to top. Inaccurate.

  • Features of measuring hot water flow with vortex flowmeter:
  • The temperature of the hot water is not very high, and the maximum temperature does not exceed 140 ℃;
  • The cleanliness of hot water is relatively high, and the water does not contain solid matter;
  • The water contains chloride ions, which is corrosive to ordinary steel. And as the water temperature rises, the corrosiveness increases;
  • The maximum pressure of hot water used in the heating system is 1MPa. The pressure used for water is higher, about several megapascals;
  • The pipe diameters vary. The pipe diameter of the boiler water supply pipe is 50~300mm. The pipe diameter of the heating system is quite different. The smallest pipe diameter is 20-40mm, and the largest pipe diameter can reach 1000mm.
  • The flow range ratio is about 5:1~10:1.

The adaptability of ultrasonic flowmeter is incomparable to other types of testing instruments. It has been made into a basic type, high temperature type, explosion-proof type, and wet test type instrument panel with different sound channels to incorporate different substances, different places and different Pipeline standard flow measurement.

Extended reading: non contact flow meter

Ultrasonic flowmeters mainly have the following advantages in practical application:

  • Ultrasonic flow meters are more convenient and faster to install and maintain in practice.
  • The measuring pipe diameter of the ultrasonic flowmeter is relatively large.
  • The measurement reliability of the ultrasonic flowmeter is high.
  • The measurement of ultrasonic flowmeter will not be affected by fluid-related parameters
  • It can be used as a clamp-on ultrasonic flowmeter, which is quick and easy to install and use.
  • It can measure heat and flow at the same time.

Extended reading: Industrial VS Residential inline water flow meters

On the large-diameter pipes of the power plant (station), the orifice plate is still used to measure the flow of water supply and the amount of return water.

Mainly take the following advantages:

  1. The orifice itself has high reliability. The heating will not be interrupted due to the orifice plate.
  2. Convenient verification. The orifice plate only needs to be verified by geometric method. It is not necessary to send the verification center to the standard device for real flow calibration like some flow sensors and transmitters.
  3. When the caliber is large, the investment is relatively low.

Its biggest shortcoming is the large pressure loss, which is not conducive to saving power.

Extended reading: Insertion Ultrasonic Water Flow Meter – Designed for Agricultural Irrigation, Garden Management

Extended Reading: Chilled Water Flow Meter

Hot Water Flow Meter Specifications

Hot water flow meterPipe diameter rangeAmbient temperatureMedium temperatureReference accuracy
Magnetic flow meterDN15~DN3000-25ºC~+60ºC　-25℃~+150℃±1.0%
Turbine flow meterDN4~DN200　-10~+55℃ (-196～80)℃
-20~+80℃;-20~+120℃; -20~+150℃;		　±0.5%, ±1%
Vortex flow meter　DN15~DN300
DN300~DN1000		-35℃～+60℃　Piezoelectric type :-40~150,-40~260,-40~330℃;
Projected Capacitive:-40~400℃ (Consulting supply)		　
±1%
Ultrasonic flow meter　DN15~DN6000-20ºC~+60ºC　-40℃～+160℃　±1% 

Extended reading: Quantitative control with turbine flowmeter

Hot Water Flow Meter with Pulse Output

Commonly used flow meters have three forms: current output, voltage output, and pulse output.

Among them, the current output and the voltage output signal of the instrument are in line with the International Electrotechnical Commission (IEC) standard. There is currently no standard for the pulse output signal of the instrument.

The flowmeter with pulse output, its output is a pulse signal proportional to the flow rate. Compared with the analog signal of voltage and current, the pulse signal is convenient for remote transmission without reducing the accuracy, and there is no zero drift. It is easy to connect with the computer, easy to carry out cumulative display and has a strong anti-interference ability.

Extended reading: Ultrasonic Water Meter for Residential Water

Water Flow Meter Types

There are many types of flow meters for measuring water.

Common ones are V cone flowmeter, electromagnetic flowmeter, metal rotor flowmeter, vortex flowmeter, liquid turbine flowmeter, ultrasonic open channel flowmeter, ultrasonic flowmeter, etc.

At present, electromagnetic flowmeters and turbine/vortex can solve most of the working conditions.

More about:

Digital water flow meters|Water flow meter types

Featured Digital Water Flow Meter

Magnetic Water Flow Meter
Vortex Shedding Flow Meter
In-Line Ultrasonic Flow Meter
Liquid Turbine Flow Meter
Dual Channel Ultrasonic Water Meter
Handheld Ultrasonic Flow Meter
Turbine Insertion Flow Meter
Insertion Magnetic Flow Meter
Turbine Sanitary flow meter
Ultrasonic Clamp on Flow Meter

Extended Reading: Inline Ultrasonic Flow Meter

Hot Water Flow Meter Price

Sino-Inst offers over 30 water flow meter 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 water flow meter options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of water flow meters, located in China.

The top supplying country is China (Mainland), which supply 100% of the water flow meter respectively.

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

Chemical Flow Meter Guide

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What is Chemical Flow Meter?

Chemical Flow Meter is also known as chemical resistant flow meter. It is a flow meter used to measure common chemical fluid media. In chemical production control and metering, between chemical reaction storage tanks, or chemical raw material feed pipelines.

Sino-Inst offers a wide range of liquid and gas flow meters to help you regulate the flow of water, petroleum products, fuels, chemicals and more.

Get a Quote More Flowmeters

So how do choose the most suitable Chemical Flow Meter? Hope you can find the answer after reading this article.

Featured mechanical & digital flow meter for chemicals

Magnetic Water Flow Meter
Insertion Magnetic Flow Meter
Magnetic Sanitary Flow Meter
Magnetic Stainless Steel Flow Meter
Turbine Sanitary flow meter
Low temperature Turbine Flowmeter-Liquid Nitrogen Flow Meter
Precession Vortex Gas Flowmeter
Clamp Filling Oval Gear Positive Displacement Flow Meter
High Temperature Oval Gear Flow Meter – Heating oil
Oval Gear-Marine Fuel Flow Meter
Integral DP Flow Meter
Target Flow Meter
Handheld Ultrasonic Flow Meter
Ultrasonic Clamp on Flow Meter
U-Series Liquid Mass Flow Meter

If you want to choose a suitable chemical flow meter, you must first understand the characteristics of the chemical raw materials you need to measure.

According to different forms, chemical raw materials can be divided into solid chemical raw materials, liquid chemical raw materials, and gas chemical raw materials. There are many liquid and gas chemical raw materials, and most of them are corrosive. Special attention should be paid to them during transportation and storage.

The chemical flow meter mainly measures gas and liquid chemical raw materials.

Common characteristics of chemical fluids that need to be considered when measuring flow rate:

  1. Corrosive

This is the most common characteristic of chemical materials. Corrosive acid, alkali, salt solution.

  1. Flammable and explosive

Compared with flammable liquids and solids, flammable gas is easier to burn, and the burning speed is fast, and it burns out. Gas composed of simple components is more flammable, the faster-burning rate has higher flame temperature and greater risk of fire and explosion than gas composed of complex components.

  1. Electrified

Most flammable liquids are electrolytes. Such as crisps, ketones, gasoline, esters, aromatics, and petroleum products.

These substances are transported, poured, shaken, stirred, and flowed at high speeds in pipelines, storage tanks, tank trucks, and oil tankers.

Because friction is easy to generate static electricity, when the static charge accumulated to a certain extent, static sparks will be generated, which may cause burning and explosion.

  1. Stickiness

Such fluids include glue, resin, asphalt, and molasses.

Gear Flow Meter – A New Choice for Chemical Liquids

Gear Flow Meters produced by Sino-Inst has high machining accuracy and precise installation. The rotation of the gear is scanned by non-contact. Each tooth produces a pulse. The resolution is very high. The cylindrical gear transmitter can measure very small flow. Quantitative small volume of liquid.

The new Gear Flow Meter made of PTFE is widely used in the chemical industry and laboratories. 98% nitric acid and sulfuric acid resistant to hydrofluoric acid. It has not been corroded after long-term continuous use.

Gear Flow Meter is suitable for:

  • Resin and glue measurement
  • Hydraulic oil, lubricating oil, grease measurement
  • Fuel oil measurement
  • Ink, asphalt measurement
  • Liquid nitrogen, freezing liquid, solvent measurement
  • Edible oil, fish oil and food filling measurement
  • Chemical and anti-corrosion requirements fluid measurement
  • Fluid quantitative control system

Extended reading: High-quality hydraulic fluid flow meters

Chemical flow meters types

The following will explain the flowmeters commonly used in the chemical industry.

  1. Electromagnetic flowmeter. When a conductive fluid flows through an electromagnetic field, the velocity of the fluid can be obtained by measuring the voltage. The electromagnetic flowmeter has no moving parts and is not affected by the fluid. The accuracy of measuring conductive liquids when the tube is full is very high. The electromagnetic flowmeter can be used to measure the flow rate of the slurry fluid.
  2. DP flowmeter can be used to measure the flow rate of most liquids, gases and steam. Positive displacement flow meter (PD). The PD flowmeter is used to measure the volumetric flow rate of liquid or gas. It introduces the fluid into the measuring space and counts the number of rotations. Impellers, gears, pistons or orifices are used to divert fluids.
  3. Vortex flowmeter. The vortex flowmeter is to place a non-streamlined vortex generator in the fluid, and the speed of the vortex is proportional to the speed of the fluid to calculate the volume flow. The vortex flowmeter is suitable for measuring liquid, gas or steam. It has no moving parts and no fouling problem. The vortex flowmeter generates noise and requires the fluid to have a higher flow rate to generate the vortex.
  4. Thermal mass flow meter. The fluid velocity is measured by measuring the increase in the temperature of the fluid or the decrease in the thermal sensor.
  5. Coriolis flowmeter. This kind of flowmeter uses a vibrating fluid tube to produce a deflection corresponding to the mass flow rate for measurement.
  6. Turbine flowmeter. When the fluid flows through the turbine flowmeter, the fluid causes the rotor to rotate. The rotation speed of the rotor is related to the speed of the fluid. From the average flow rate of the fluid felt by the rotor, the flow rate or total amount is derived.
  7. Ultrasonic flowmeter. The propagation time method and the Doppler effect method are methods often used in ultrasonic flowmeters to measure the average velocity of the fluid. Like other speed meters, it is a meter that measures volume flow.

Electromagnetic flowmeter F4, F46, PFA, rubber lining

Electromagnetic flowmeters can measure the flow of general conductive liquids. It can also measure the volume flow of liquid-solid two-phase flow, liquid with high viscosity, strong acid, strong alkali, and salt liquid medium.

For chemical liquids, as long as they are conductive liquids, electromagnetic flowmeters can measure them.

But we need to choose the appropriate lining and electrode according to the characteristics of the chemical liquid.
You can refer to the liner and electrode material usage table below.

Lining material selection：

Lining material

Linner

Main performance

Application

Diameter

Rubber

Neoprene(CR)

1. It has excellent flexibility. High tearing force. Good wear resistance.
2. Resistant to the corrosion of low-concentration acid, alkali, and salt media. Not resistant to corrosion by oxidizing media.

1. <60℃
2. General water, sewage, mud and mineral slurry with weak abrasiveness

DN65~DN1600

Polyurethane Rubber(PU)

1. It has excellent wear resistance (equivalent to ten times that of natural rubber)
2. Poor acid and alkali resistance.
3. It cannot be used for water mixed with organic solvents.

1. <80℃
2. Neutral and strong abrasion ore slurry, coal slurry, mud, etc.

DN25~DN500

Silicone rubber

1. It has excellent flexibility. High tearing force. Good wear resistance.
2. High temperature resistant non-corrosive medium.

1. <180℃
2. Hot water

DN40~DN1600

Fluoroplastics

PTFE(F4)

1. It is a material with the most stable chemical properties in plastics. Can withstand boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia. It is also resistant to concentrated alkali and various organic solvents. Not resistant to the corrosion of chlorine trifluoride, high temperature oxygen trifluoride, high flow rate liquid fluorine, liquid oxygen, and ozone.
2. Poor wear resistance.
3. Poor anti-negative pressure ability.

1. <120℃
2. Strong corrosive media such as concentrated acid and alkali
3. Sanitary medium

DN10~DN1600

Teflon F46(FEP)

1. The chemical properties are equivalent to PTFE
2. Tensile strength and abrasion resistance are better than PTFE
3. Can withstand high pressure resistance.

1. <180℃
2. Corrosive acid-base salt
3. High pressure and negative pressure resistance

DN10~DN200

PFA

1. The chemical performance is equivalent to F46
2. Compressive and tensile strength due to F46

1. <180℃
2. Corrosive acid-base salt
3. High pressure and negative pressure resistance

DN10~DN300

Electrode material selection:

MaterialMedium
316LDomestic water, industrial water, raw water, urban sewage, etc.
Hastelloy B (HB)Sodium hydroxide ammonium hydroxide alkali solution and weak organic acid
Hastelloy C (HC)Oxidizing salt solution (Fe+++, Cu++, seawater)
Titanium (Ti)1. Salt solution (chloride, sodium salt, potassium salt, ammonium salt, sea water, etc.)
2. Alkaline solution (such as concentration less than 50% potassium hydroxide solution)
Tantalum(Ta)1. Hydrochloric acid, sulfuric acid, oxidizing acid, aqua regia
2. Chlorine dioxide, ferric chloride, hypochlorous acid, sodium cyanide, lead acetate, etc.
Platinum (Pt)Acid, alkali, salt solution
Tungsten carbide (WC)Handled neutral industrial sewage and domestic sewage. Resistant to solid particle interference

Guess you will like: Magnetic Flow Meters technical guide|What is &How they work? 

Of course, in addition to electromagnetic flowmeters. To measure acidic media, oval gear flowmeters, vortex flowmeters, and turbine flow sensors made of acid-resistant materials can also be used. The parts in contact with the medium are made of acid-resistant materials, which can resist general acidic substances.

Such fluids include solvents, solutions, ethanol, diesel, and clean water.

Turbine flow meters are less expensive and usually have chemical flow sensors that have a compact design.

These flow meters are volumetric, meaning that they can measure liquids passing through them either indirectly or directly.

Some of the advantages of using turbine flow meters are that they have high accuracy, can measure high pressure, and have a large measuring range.

When the clamp-on ultrasonic flowmeter is working, the liquid does not directly contact the flowmeter. So it is suitable for various corrosive liquids. But its accuracy rate is relatively low.

Extended reading: Sludge flow meter for sewage treatment return activated sludge system

Commonly used chemical liquid-flowmeter recommendation

Chemical FluidsAvailable Flow Meters
Sulfuric acidElectromagnetic flowmeter, PTFE gear flowmeter
Acetic acidElectromagnetic flowmeter, PTFE gear flowmeter
Hydrochloric acidElectromagnetic flowmeter, PTFE gear flowmeter
Chemical sewageElectromagnetic Flowmeter
Liquid nitrogenCryogenic turbine flowmeter
Hydrogen peroxideElectromagnetic Flowmeter
AsphaltGear flow meter

Of course, the choice of flowmeter also needs to be determined according to the actual measurement parameters.

More chemical liquid flow measurement solutions

Sino-Inst, Manufacturer for Chemical Flow Meters. These chemical flow meters are easy to use and install on hose ends, pumps or fluid transfer systems. These chemical flow meters are designed for today’s pesticides, fertilizers, and many other chemicals.

Each chemical flow meter has different measurement materials and different measurement characteristics. Compatible with other chemical liquids or oils.

Sino-Inst’s Chemical 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.

If you are not sure which chemical flow meter is right for your measurement? Please feel free to contact our sales engineers. Based on years of experience in measuring chemical fluid flow, we will help you find the right chemical flow meter.

Oil Level Measurement Solutions for the Oil & Gas Industry

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Oil Level measurements are necessary to control the amount of oil in the tank and to prevent overflow. Oil Level measurements are very important in the process of oil and gas storage and transportation. We will analyze and introduce the automatic level measurement here. Hope to help you!

Technical Support

The Necessity of Oil tank level measurement

-In the process of oil and gas storage and transportation, accurately measure the height of the liquid level in the large oil storage tank. This is an important measure to correctly calculate oil storage, determine inventory, and calculate transportation.

-In oil and gas production, especially in oil and gas gathering, transportation, storage, and transportation systems, oil, natural gas, and associated sewage must be separated, stored, and processed in various production equipment and tanks. The measurement and control of the level are essential to ensure normal production and equipment safety. Otherwise, a major accident will occur.

-For example, if the oil tank level measurement is not well controlled, there will be evacuated or oil spill “roofing” accidents. If the liquid level of the oil-air separator is too high or too low, “oil running” and “gas blow-by” accidents will occur. Seriously affect the production and safety of subsequent equipment;

-The high oil-water interface in the electric dehydrator will destroy the electric field. If it is low, it will carry oil in the water and affect production.

The Basic Concept of Level

  • Level—refers to the general term of the liquid level of the liquid medium, the level of solids or the level of particles in the container and the interface between two different liquid media.
  • Liquid level-the height of the liquid medium in the container
  • Material level-the accumulation height of solid or granular substances in the container
  • Interface level – the level of the interface of two immiscible liquids medium

Extended Reading: How to Measure Volume of Liquid

Classification of Oil Level Measurement

According to the measurement method, it can be divided into continuous measurement and fixed-point measurement.

According to its working principle, it can be divided into the following types:

  1. Direct reading type It measures the liquid level based on the principle of fluid connectivity.
  2. Buoyancy type It measures the liquid level according to the principle that the height of the float changes with the height of the liquid or the buoyancy of the liquid to the float (or sinker) immersed in the liquid changes with the height of the liquid. The former is called constant buoyancy, and the latter is called variable buoyancy.
  3. Differential pressure type (static pressure type) It measures the level according to the principle of the change in the static (differential) pressure generated at a certain point by the change in the height of the liquid column or the material accumulation.
  4. Electrically, it measures the level based on the principle of converting level changes into various changes in electricity.
  5. Nuclear radiation type It measures the liquid level based on the principle that when the nuclear radiation of the isotope rays penetrates the material, its intensity changes with the thickness of the material layer.
  6. Acoustic It measures the level according to the changes in acoustic impedance and reflection distance caused by changes in the level

Read more about: 7 Level Senors for Tank Level Measurement 

Direct measurement is one of the simplest and most intuitive measurement methods. It uses the principle of communicating devices. The liquid in the container is introduced into an observation tube with a ruler. Read the height of the liquid level by the ruler

Such as a glass tube level gauge.

Extended Reading: GWR Level Sensor for High Temperature & High Pressure

Manual gauge level measurement is a basic method for measuring the volume and quality of liquids in various storage tanks.

It has the characteristics of simple operation, accurate measurement, and no auxiliary equipment. It is still the main measurement method in the crude oil gathering and transportation process of various oil fields.

When measuring with a gauge, first measure the height of the liquid level in the tank, and then calculate the volume and mass of the liquid in the tank according to the cross-sectional area of the tank or the large tank volume table.

The tool used by the gauge to measure is steel tape with a copper weight on the lower end. In order to facilitate the oil measuring operation, an oil measuring port is provided on the top of the tank. An oil measuring pipe is installed under the oil measuring port, and a hole is drilled at the bottom end of the pipe to communicate with the liquid. The purpose of setting the oil measuring pipe is to reduce the influence of the liquid level fluctuation in the tank on the oil measuring.

Extended reading: High Temperature Flow Meter

The magnetic flip level gauge has a firm structure, reliable work, and an eye-catching display.

Since the measured liquid is completely sealed and magnetic coupling transmission is used, it can measure high temperature, high pressure, and opaque viscous liquids, such as crude oil, sewage, etc.

The disadvantage is that after long-term use, the magnetism of the magnetic steel is degraded. Wear of the flap shaft can easily cause the wrong indication
Therefore, it should be checked and corrected regularly.

Extended reading: Industrial Tank level indicators and Tank Level Gauges

The buoyancy method to measure the liquid level is based on the principle of force balance, usually with the help of floats. The float is made into a hollow rigid body so that it can float on the liquid surface when it is balanced. When the liquid level changes, the float will move up and down with the liquid level. Therefore, by measuring the displacement of the float, the amount of liquid level change can be known.

Float type level gauges can be divided into float type, float type, etc. according to different float shapes;

According to different institutions, it can be divided into steel belt type and lever type.

Extended reading: What is a capacitive liquid level sensor?

It is measured based on the pressure generated by the weight of the liquid.

Since the static pressure generated by the liquid on the bottom surface of the container is proportional to the height of the liquid level. Therefore, the liquid level can be calculated by measuring the pressure of the liquid in the container.

Extended Reading: Petroleum Flow Meter

Ultrasonic level gauges use the propagation characteristics of waves in the medium.

Therefore, install an ultrasonic transmitter and receiver at the bottom or top of the container. The emitted ultrasonic waves are reflected at the phase interface. And it is received by the receiver. The time difference between ultrasonic wave transmission and reception is measured. The liquid level can be measured.

Read more: Guide: Non-contact Ultrasonic Level Sensing transmitters

According to different working principles, the electrical method can be divided into resistive, inductive, and capacitive.

Using electrical methods to measure frictionless parts and movable parts, signal conversion and transmission are convenient. It is convenient for remote transmission, reliable work, and the output can be converted into a unified electrical signal. Used in conjunction with the electric unit combination instrument. Can easily realize automatic detection and automatic control of liquid level.

Extended reading: Non Contact Liquid Level Sensor Working Principle

Radar level transmitters use radar technology to perform the non-contact continuous level measurement. The radar level indicator converts the level into an electrical signal. The level signal output can then be utilized 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 a 120GHz FMCW radar level sensor, 26GHz radar level meter, 6GHz level meter.

The magnetostrictive liquid level sensor that uses the principle of magnetoelectric conversion for liquid level measurement is a new product launched in recent years.

Extended reading: Diesel fuel tank level gauges & indicators

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Performance characteristics and selection of common oil tank level gauges

The intermediate tank only monitors parameters such as liquid level, temperature, and pressure (pressure storage tank) to prevent accidents such as roof capping and vacuuming of the oil tank. There is no need for handover monitoring and measurement;

The liquid level, temperature, density, volume, and quality of the medium in the trade tank must be monitored and measured frequently, and the accuracy is very high.

Performance comparison of Oil level measurement

Level gaugeLight oilCrude oilHeavy oilAsphaltLiquefied gasOther liquids
Magnetic flap level gaugeokokokpoorNovery good
FloatokokokpoorNovery good
radarGreatGreatGreatGreatGreatGreat
Static pressureGreatGreatokpoorokGreat
Magnetically inducedGreatGreatGreatpoorGreatGreat
UltrasonicGreatGreatGreatGreatGreatGreat

Extended reading: Radar Oil Tank Level Sensor

Oil Tank level measurement instruments for different media

Level gaugeLevel measurementTemperature deletionDensity deletionBoundary measurementVolume measurementQuality deletionInstallation situationCost
Magnetic flapHigh precisionCan not be measuredCan not be measuredSmall errorDepends on TDDepends on Tρsimplelow
FloatHigh precisionCan not be measuredCan not be measuredMistaken sheepDepends on TDDepends on Tρsimplelow
radarHigh precisionimportantUnable to deleteUnable toSmall errorDepends on Tρsimplehigh
Hydrostatic pressureBig errorunimportantSmall errorUnable toBig errorDepends on TρcomplexRelatively high
Magnetically inducedHigh precisionimportantUnable to deleteHigh precisionSmall errorDepends on Tρcomplexhigh
UltrasoundHigh precisionunimportantCan not be measuredUnable toSmall errorDepends on Tρcomplexhigh

Explore Oil and Gas Flow Meters

Selecting Guide for Oil level measurement

  1. Oil tank volume
  2. ·Oil tank use
    • High-precision level gauges should be used for trade tanks, and general level gauges can be used for intermediate tanks;
  3. Medium characteristics
    • When storing high-viscosity media (such as heavy oil), try to use a level gauge that does not or has little contact with the measured medium. Such as radar type, ultrasonic type and magneto-induced level gauge, light oil can use general level gauge;
  4. Actual needs of users
    • ·If the user requires high measurement accuracy and low investment restrictions, a level gauge with good performance can be used. Under normal circumstances, the old tank area can be retrofitted or updated according to the use and maintenance of the original level gauge.

Extended reading: The Secret of Ultrasonic Level Measurement

Featured Oil level measurement devices

Magnetostrictive Level Transmitters
Non-Contacting Radar Level Measurement
Float Level Sensors – Single and Multipoint
SIRD70 Guided Wave Radar Level Transmitters
Ultrasonic Level Sensing
Capacitive Level Sensors
Hydrostatic Level Measurement
HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller
ULT-100A Ultrasonic Level Transducer
ULT-200 Ultrasonic Level Detector
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
HS-ULC Ultrasonic Level Switch-External Mounted

Frequently
Asked
Questions

Help Center

Measuring and monitoring fluid levels accurately and precisely requires choosing the correct methodology for the target medium and vessel.

Generally, you will choose among six methods for measuring and monitoring fluid levels, each with advantages and disadvantages:

  • Continuous float level transmitters
  • Differential pressure transmitters
  • Load cells
  • Radar level transmitters
  • Radio Frequency (RF capacitive level transmitters)
  • Ultrasonic level transmitter

A tank level sensor is a level sensor used to measure the tank level. The liquid level is the level of the liquid in a sealed container (such as a water tank) or an open container (water tank). The instrument that measures the liquid level is called a liquid level sensor, a liquid level gauge, or a liquid level transmitter. The liquid level sensor is a kind of level instrument. Hydrostatic, Ultrasonic, Magnetostrictive, Radar, Differential Pressure are common choices for tank level measurement. Liquid level sensors have been around for decades for leak detection or level measurement. Commonly measured mediums are Water, Fuel, Diesel, Gasoline, diesel, liquefied gas, liquid ammonia, etc.

Extended reading: Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Different tank level sensors have different measurement principles. Such as mechanical, radar, ultrasonic, etc.

Extended reading: ultrasonic level sensor for diesel tank

In the petrochemical industry in order for the crude oil process to run continuously and smoothly care has to be taken when storing raw and finished products. Delivery of the crude oil is via pipeline or ship and stored in a large tank until it is ready for final processing.

Accurate level measurement of products of distillation is essential whilst they are being stored in different sized tanks.

In the past, it was expensive as calibratable measuring devices were implemented for level measurement. Nowadays cheaper and low-maintenance measuring systems are used for small and medium-sized tanks. Products are now usually measured by calibratable flow meters while being moved.

Extended Reading: Industrial petrol flow meters Types

Read more about: Capacitive Level Measurement System

Sino-Inst offers over 50 Solutions for Tank Level Sensing. About 50% of these are float liquid level meters, 40% are the level switches.

A wide variety of Solutions for Tank Level Sensing options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Solutions for Liquid Level Measurement instrumentation, located in China.

Solutions Guide for Liquid Level Measurement

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Liquid level measurement and monitoring play an increasingly important role. Liquid level measurement and monitoring directly affect the quality of the production process.

Liquid level measurement is required for process control in many industries. Use liquid level sensors for liquid level measurement. They are divided into two categories: point level measurement and continuous level measurement.

Sino-Inst offers a variety of Solutions for Liquid Level Measurement. If you have any questions, please contact our sales engineers.

Contact us

8 Types Liquid level measurement methods

  1. Floating ball measurement:

This method is the simplest and oldest detection method, and the price is relatively cheap.

Mainly through the up and down movement of the float to detect the change of the liquid level. It is a mechanical detection, the detection accuracy is easily affected by buoyancy, and the repeat accuracy is poor. Different liquids need to be recalibrated.

It is not suitable for viscous or impurity liquids, which can easily cause blockage of floating balls. At the same time, it does not meet the application requirements of the food hygiene industry.

  1. Tuning fork vibration measurement:

Tuning fork measurement is only a switch output and cannot be used to continuously monitor liquid height. The most representative one is the tuning fork level switch.

The principle is: when the two vibrating forks are filled with liquid or bulk material, the resonance frequency changes, and the switching signal is sent out depending on the detection frequency change.

It can be used to monitor the height of high-viscosity liquids or solid bulk materials, mainly for anti-overflow alarms, low-level alarms, etc. It does not provide analog output. In addition, in most cases it is necessary to install holes on the side of the container.

  1. Ultrasonic measurement:

Since the principle is to calculate the liquid level by detecting the time difference between ultrasonic transmission and reflection, it is susceptible to the energy loss of ultrasonic propagation.

It has the characteristics of easy installation and high flexibility. Usually can be installed in high places for non-contact measurement.
But when used in environments containing steam and powder, the detection distance will be significantly shortened. Therefore, it is not recommended to use it in a wave-absorbing environment with foam.

Read more: Guide: Non-contact Ultrasonic Level Sensing transmitters

  1. TDR (time domain reflection)/guided wave radar/microwave principle measurement:

Its name has many different names in the industry, and it has the advantages of laser measurement. Such as: easy installation, calibration, flexibility, etc.

But it is better than laser detection, such as no need to repeat calibration and multi-function output. Suitable for all kinds of liquid level detection with foam. Not affected by liquid color.

It can even be applied to highly viscous liquids, with relatively little interference from the external environment. But its measuring height is generally less than 6 meters.

Extended reading: Radar Non Contact Water Level Sensor

  1. Laser measurement:

The laser sensor is based on the principle of optical detection and detects light by reflecting light from the surface of the object to the receiver. The light spot is small and concentrated, easy to install, calibrate, and flexible. It can be applied to continuous or limit alarm of bulk material or liquid level.

But it is not suitable for transparent liquids. Transparent liquids easily refract light, causing the light to not be reflected to the receiver. Use in foam or steam environment (cannot penetrate foam or easily interfered by steam), fluctuating liquid (easy to cause malfunction), vibration environment, etc.

  1. Photoelectric refraction measurement:

This detection method emits a light source inside the sensor. The light source is totally reflected by the transparent resin to the sensor receiver.

But when encountering the liquid surface, part of the light will be refracted to the liquid. Therefore, the sensor detects the decrease in the amount of total reflected light to monitor the liquid level. The detection method is cheap and simple to install and debug. But it can only be applied to transparent liquids, and it only outputs switching signals.

  1. Capacitive measurement:

Capacitive measurement mainly measures the height of the material level by detecting the change in capacitance value caused by the change of the liquid level or the height of the bulk material.

There are many types, including capacitive level gauges and capacitive proximity switches that can output analog quantities. Capacitive proximity switches can be installed on the side of the container for non-contact detection.

When choosing, it must be noted that capacitance sensors are easily affected by different container materials and solution properties. For example, plastic containers and hanging materials can easily affect capacitance sensors with analog output.

Read more about: Capacitive Level Measurement System

  1. Static pressure measurement:

This measurement method uses a pressure sensor installed at the bottom. By detecting the bottom liquid pressure, the liquid level is converted and calculated. The bottom liquid pressure reference value is the atmospheric pressure connected to the top or the known pressure.

This measurement method requires the use of a high-precision, flush-type pressure sensor. At the same time, the conversion process requires continuous calibration.

Its advantage is that the detection is not limited by the height of the liquid level. But the higher the height, the higher the accuracy requirements of the sensor. Repeated calibration is required when using for a long time or changing liquid.

Read more about: Hydrostatic level measurement: Measuring Principle

Featured liquid level measurement devices/instruments

Magnetostrictive Level Transmitters
Float Level Sensors – Single and Multipoint
Ultrasonic Level Sensing
Hydrostatic Level Measurement
Non-Contacting Radar Level Measurement
SIRD70 Guided Wave Radar Level Transmitters
Capacitive Level Sensors

Liquid level measurement in a closed tank

Differential Pressure Level transmitter for closed containers

For airtight containers, the inside is isolated from the atmosphere. When the process fluid fills or empties the tank, the pressure in the tank may change from positive pressure to vacuum. This change in tank pressure will directly affect the measured liquid level unless it is compensated for. This can be done by connecting the low-side pipe of the differential pressure transmitter to the top of the tank. Therefore, when measuring the liquid level of a closed tank, a differential pressure transmitter must be used.

Image Source: https://www.yokogawa.com/in/library/resources/media-publications/how-to-avoid-temperature-effects-in-differential-pressure-level-measurements/

Double flanges are used to measure the liquid level of a closed tank.

The calculation method of the differential pressure range: the height of the liquid level to be measured (unit: m) × acceleration of gravity (9.8) × (the density of the measured medium-the density of the capillary filling liquid) (unit: g/cm3) = differential pressure range (unit: KPa).

The selection must know the measurement medium, measuring range, medium temperature, pressure, capillary length, the size and pressure rating of the process connection flange and the flange standard

If you need to measure river water level, open channel level, etc. The Ultrasonic Liquid Level Sensor can be used for non-contact continuous level monitoring.

Portable Ultrasonic Liquid Level Gauge

Portable ultrasonic liquid level indicator is best choice for tanks or pipes level measurement. It is designed to measure the presence or absence of liquid at a certain height position in a tank or in pipelines. Non-contact ultrasonic detection technology.

SI-ML works perfect for detection of dangerous toxic or corrosive liquids. Under ordinary conditions, the maximum wall thickness of measurable containers is 30mm. The product is suitable for the detection of various types of liquids. Liquids are non-crystalline or other particulate matter. For example CO2 Tank. Thanks to non-contact detection technology, this level indicator is ideal for detecting hazardous toxic or corrosive liquids.

Read more about: 7 Level Senors for Tank Level Measurement

Liquid Level Measurement Converter Tools

Converter Tools used to convert and calculate liquid level values or for calculations that require liquid level measurement to obtain other measurement parameters. Help users choose suitable Level sensors and transmitters!

Liquid Level Transmitter 4-20mA Current Output CalculatorLiquid Depth/Level to Hydrostatic Pressure CalculatorPressure to Liquid Level Calculator
Specific Gravity CalculatorHorizontal Cylindrical Storage Tank Contents/Volume CalculatorRectangular Shaped Tank Liquid Volume/Contents Calculator
Vertical Cylindrical Tank Volume/Contents CalculatorDepth/Level Unit ConverterVolume Unit Converter

FAQ

There are 7 main types of level transmitters that Sino-Instrument offers. Each type of transmitter works in a different way, and makes it useful for different types of processes.

Extended reading: Non Contact Liquid Level Sensor Working Principle

Tank Level Measurement is important for industry storage tank. For example, level measurement of fuel oil tanks and the interface measurement of chemical storage tanks. The liquid level sensor is a kind of level instrument. Hydrostatic, Ultrasonic, Magnetostrictive, Radar, Differential Pressure are commonly choices for tank level measurement. Here, we mainly analyze the magnetostrictive liquid level sensor in the tank applications.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Liquid level sensor is a kind of measuring instrument used to measure the change of liquid level in the container. It can display the change of liquid level intuitively and linearly. Among them, the magnetic float level sensor is a kind of one that can display on-site and output analog signals. Kind of level gauge.

There are many types of level gauges. There are intuitive displays such as: glass plate level gauges, glass tube level gauges, etc. There are also magnetic float level gauges, float level gauges, radar level gauges, ultrasonic level gauges, Level gauges with electronic signals such as radio frequency admittance level gauges.

Extended reading: Liquid mass flow controller

Extended Reading: How to Measure Volume of Liquid

Selection of liquid level measuring sensor

The issues that need to be considered before choosing a level measurement sensor include:

  1. Measuring liquid or solid?
  2. What is the temperature and pressure range of the application environment?
  3. Need point level measurement or continuous measurement?
  4. How much liquid level measurement range is required?
  5. Is the tested material conductive?
  6. Will the tested material cover or accumulate on the surface?
  7. Will there be turbulence, foam or steam on the surface of the liquid?
  8. Do you need contact or non-contact level measurement?
  9. What kind of output is needed, analog, relay, digital display or other?

Extended reading: Ultrasonic liquid level sensors

Sino-Inst offers over 10 Solutions for Liquid Level Measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Solutions for Liquid Level Measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Solutions for Liquid Level Measurement instrumentation, located in China.