Natural Gas Flow Meter Selection Guide

A natural gas flow meter is mainly used for inline measurement of natural gas flow. The natural gas flow meter is mainly used for industrial production and trade settlement.

Natural Gas Flow Meter Selection Guide

At present, the flowmeter products used for natural gas flow measurement roughly include: gas waist wheel flowmeter, gas turbine flowmeter, precession vortex flowmeter, thermal mass flowmeter, vortex flowmeter, ultrasonic flowmeter and orifice flowmeter Wait. Let’s make a simple comparison on the use of these flow meters.

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

Featured Natural Gas Flow Meters

Natural Gas Flow Meter Types

The flow measurement of natural gas is currently mainly used in trade settlement and is relatively common. my country’s natural gas trade measurement is based on the volume or energy method under the legally required quality indicators for transfer measurement. At this stage, volume measurement is basically the main method.

At present, the flowmeter products used for natural gas flow measurement generally include: gas waist wheel flowmeter, gas turbine flowmeter, precession vortex flowmeter, vortex flowmeter, ultrasonic flowmeter and orifice flowmeter. Read more about: Industrial Gas Measurement with Digital Gas Mass Flow Meters

Let’s make a simple comparison on the use of these flow meters.

Roots flowmeter

Roots flowmeter is also called gas waist wheel flowmeter. Not only can it be used to measure dry gas, but also moisture (ie associated gas). Because the orifice flowmeter and turbine flowmeter are not suitable for measuring the associated gas containing droplets. Roots flowmeter has certain advantages because of no strict requirements. In addition, another advantage is that it is not sensitive to flow arterial movement.

But pay attention to the following points when measuring natural gas:

  1. Generally, a certain mesh filter should be installed upstream of the flowmeter. To prevent the flowmeter from being stuck or blocked. And to regularly discharge sewage and check and clean the filter.
  2. In order to prevent liquid accumulation in the measuring chamber of the flowmeter, the flowmeter should be installed vertically as far as possible. Or it is higher than the process pipeline, and the effusion should be discharged regularly.
  3. Before the flowmeter is put into use, it must be ensured that there are no impurities such as welding slag in the pipeline, and the bypass should be opened. Prevent the flowmeter rotor from running at high speed and damaging the flowmeter.
  4. It is necessary to observe and pay attention to the pressure before and after the flowmeter, and judge the fault in time.

In addition, Roots flowmeter has a big disadvantage. The noise is louder when the waist wheel rotates at a high speed.

Gas turbine flowmeter

Gas turbine flowmeter is a natural gas flow meter that is used more frequently at present. The advantages are simple structure and easy installation. The overall size is relatively small. The accuracy is high. The repeatability is good. The wide range can reach 15:1~25:1. In the case of high-pressure gas transmission, the range can be further increased.

The output of the gas turbine flowmeter is a pulse frequency signal. Therefore, when it is used with a programmable flow indicator, it is easy to obtain a lower system uncertainty.

The disadvantage of the gas turbine flowmeter is that the turbine rotates at a high speed, mechanical friction between the bearing and the shaft, and the service life is not very long. Therefore, attention should be paid to lubrication, and the lubrication method provided by the manufacturer can be used to regularly replenish lubricating oil.

In addition, if the high-speed gas contains larger solid particles, it is easy to damage the turbine blades. Therefore, a filter should be installed on the pipeline before the turbine flowmeter.

Precession vortex flowmeter

The precession vortex flowmeter is the first choice for some small natural gas distribution stations.

The advantage of precession vortex flowmeter: wide operating temperature range. The scope is large. The Reynolds number is within a certain range and is not affected by fluid temperature, pressure, density and viscosity. Strong applicability. Except for impurities with larger particles or longer fibers, no filter is generally required. The requirements for the upstream and downstream straight pipe sections are relatively low, just take the upstream 4D and downstream 2D ​​straight pipe sections. The output frequency has a linear relationship with the volume flow rate.

The disadvantage is that the pressure loss is relatively large. Secondly, the precession vortex flowmeter is a fluid vibration flowmeter, which is more sensitive to pipeline vibration and electromagnetic interference. Therefore, it can only be used in an environment with low vibration and no electromagnetic interference.

Vortex flowmeter

Vortex flowmeters are currently generally used in industrial and mining enterprises for internal natural gas assessment and energy consumption measurement applications.

The overall structure design of the vortex flowmeter is reasonable, the dynamic measurement range is wide, and the pressure loss is small.

The main body of the vortex flowmeter can be made of stainless steel, which is suitable for the measurement of corrosive media. The vortex flowmeter has no moving parts and is easy to install and maintain. On-site LCD display, pulse, 4-20mA output or 485 serial communication interface. It can be connected with industrial automation system and many other advantages.

Its biggest disadvantage is that it is afraid of vibration and electromagnetic interference.

Read more about: How Vortex Flow Meter measure efficiently? For steam, gas, liquid 

Gas ultrasonic flowmeter

Gas ultrasonic flowmeter is the latest technology flowmeter product. It has many advantages such as wide measurement range, high measurement accuracy, no pressure loss and movable parts, and low installation and use costs. So far, the governments of 12 countries including the United States, the Netherlands, the United Kingdom, and Germany have approved gas ultrasonic flowmeters as legal measuring instruments for natural gas.

The accuracy of the gas ultrasonic flowmeter is not only related to the flow rate, but also related to the gauge diameter. For small-caliber instruments, it is difficult to measure the sound wave propagation time in turbulent gas due to the short sound channel length. Therefore, it is difficult to improve the accuracy of small-caliber gas ultrasonic flowmeters.

Thermal mass flow meter

A true mass flow meter does not require temperature and pressure compensation for gas flow measurement. The measurement is convenient and accurate. The gas mass flow or standard volume flow can be obtained.

Thermal mass flow meters can perform:
Gas flow measurement in steel plants and coking plants.
Boiler air flow, secondary air flow measurement.
The flow rate of flue gas discharged from the chimney is measured.
Aeration flow measurement in water rights treatment.
Gas flow measurement in the production process of cement, cigarette and glass factories.
Compressed air flow measurement.
Flow measurement of mixed gas of various natural gas, coal gas, liquefied gas (gas), flare gas, argon gas, carbon dioxide and so on.
Gas flow measurement in coking plant.

Read more about: Gas Thermal Mass Flow Meter

Orifice flowmeter

Orifice flowmeter is currently the most used flow meter for measuring the flow of natural gas.

Over the past few decades, people have summarized dozens of special research and practical applications for natural gas measurement, and a qualitative leap has taken place on the basis of quantity. The hallmark is standardization. Even use a standard orifice flow meter. It is possible to determine the relationship between the signal (differential pressure) and the flow rate without real flow calibration, and to estimate its measurement error. It is currently the only one that meets this standard among all flow meters.

In order to eliminate the major shortcomings of its own output signal being analog signal, low repeatability, narrow range, large pressure loss, orifice flowmeter adopts microelectronics technology, computer technology, fixed-value throttle and standard nozzle technology. The device has further improved its technical level.

V cone flowmeter

The natural gas flow measurement can be measured with a V-cone flowmeter. The V-cone flowmeter has the advantages of high measurement accuracy and good stability. And in the subsequent use process, there is no need for maintenance, which can greatly improve work efficiency.

The main advantage of the V-cone flowmeter is that it has better stability than other flowmeters. Secondly speaking of caliber, V cone flowmeter has a wide range ratio. Can do DN3000 caliber. It is also unmatched by other flow meters.

In short, these 8 types of flowmeters have their own advantages and their shortcomings in the measurement of natural gas flow.

Extended reading: What Is A Venturi Flow Meter?

Natural gas flow meter selection

Faced with so many varieties of natural gas flow meters, the selection has become a difficult problem.How to scientifically and objectively select the best flowmeter is a problem that needs attention.

We believe that the selection should follow appropriate rules. Try to avoid misleading propaganda from manufacturers. Blindly choose expensive ones.

Find a flow meter that is just right for yourself, it is your ideal flow meter.

Natural gas flow meter selection can be carried out in five aspects: Instrument performance. Fluid characteristics. Installation conditions. Environmental conditions and economic factors.

The various considerations are as follows:
Performance aspects of natural gas flow meters:Accuracy. repeatability. linearity. range. pressure loss. upper and lower limit flow. signal output characteristics. response time, etc.

Fluid characteristics of natural gas flowmeter:

Fluid pressure, temperature, density, viscosity. lubricity, chemical properties, numbness. corrosion, fouling, dirt, gas compressibility. iso-index, specific heat capacity, electrical conductivity. speed of sound, mixed-phase flow, pulsating flow, etc.;

Installation conditions of natural gas flowmeter:

Pipeline layout direction, flow direction, upstream and downstream pipeline length. pipeline diameter, maintenance space, pipeline vibration. grounding, power supply, auxiliary equipment (filtration, sewage), explosion protection, etc.;

Environmental conditions for natural gas flow meters:

Environmental temperature, humidity, safety, electromagnetic interference, etc.;

Economic factors of natural gas flowmeter:

Purchase cost, installation cost, maintenance cost. calibration cost, service life, operating cost (energy consumption), spare parts, etc. Fluid vibration natural gas flowmeter. There are two types of this type of flowmeter, vortex flowmeter and precession (vortex precession) flowmeter.

Users can consider their actual situation when choosing, and analyze specific problems in detail. Choose the right flow meter product to ensure the correct measurement.

Of course, if you still have technical questions when selecting natural gas flow meters, please feel free to contact Sino-Inst sales engineers.

Portable natural gas flow meter

Currently, the Portable Gas flow meter is mainly products such as German FLEXIM and GE TransPort PT878GC. However, the cost of such products is very high.

Therefore, on the basis of cost control, we need to choose a suitable natural gas flow meter.

Although, we do not have a portable gas flow meter. But we have handheld ultrasonic liquid flow meters. Read More.

Natural gas flow meter price

Sino-Inst, as a manufacturer of natural gas flowmeters, under the premise of ensuring product quality, we provide you with competitive prices for natural gas flowmeters.

The following is the reference price of natural gas flowmeter:

Natural gas flow meterPrice
Gas turbine flowmeterUSD 600.00~1200.00
Precession vortex flowmeterUSD 500.00~ 1000.00
Vortex flowmeterUSD 370.00~ 900.00
Gas ultrasonic flowmeterUSD 1600.00~35000.00
Thermal mass flow meterUSD 709.00~ 1500.00
Orifice flowmeterUSD 400.00~ 20000.00
V cone flowmeterUSD 529.00~ 1950.00

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Sino-Inst’s Natural Gas Flow Meter offer reliable and accurate volume flow measurement in a large range of sizes and pressure rating while being fully compliant with international standards.

Sino-Inst is the risk-free choice for your gas flow measurement applications.

Sino-Inst supplies Natural Gas Flow Meters, like: gas turbine flow meter. vortex flowmeter, thermal mass flow meter, and more.

Sino-Inst’s Natural Gas 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.

Coke Oven Gas Measurement

What kind of flowmeter is used for coke oven gas measurement? The instability of the medium in the coke oven gas causes measurement problems for the flowmeter. Please keep reading.

Before this, coke oven gas can be measured with a V cone flowmeter. Today, we compare the characteristics and economic analysis of gas ultrasonic flow meters, thermal flow meters, and target flow meters. Let’s take a look at the application of these flow meters in coke oven gas measurement.

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

What is coke oven gas?

Coke oven gas is an important product and consumable of metallurgical enterprises. Coke oven gas has high calorific value and is widely used in the heating process of steelmaking, steel rolling, power generation and other production. Its consumption directly reflects the assessment of energy consumption of each unit The completion of indicators.

Therefore, coke oven gas flow measurement has always been the focus of energy measurement.

However, coke oven gas itself has a low flow rate, a low density, and contains impurities such as tar, water, industrial naphthalene, ammonia, and sulfides. Therefore, the flow measurement of coke oven gas is a difficulty in energy measurement.

Featured Flow Meters for Coke Oven Gas Measurement

Coke oven gas measurement challenges

  1. The dirt of coke oven gas is blocked.
  2. The instability of the working conditions of the coke oven gas fluid itself.
  3. Coke oven gas is highly corrosive, causing serious damage to valves and lax closure. Small and low flow gas flows unimpeded in the pipeline, affecting the data balance of the entire system.
  4. Once the coke oven is in production, it is difficult to stop production, resulting in inconvenient installation and disassembly.

Extended reading: Gas Mass Flow Meter

Case: Analysis of Lu’an Group Coke Oven Gas Metering Point

The coke oven metering points are mainly concentrated on the outlet of the fan, the return gas pipeline, the inlet and outlet of the gas tank, and the external gas supply pipeline.

The above-mentioned pipelines have been used for a long time, and there is dust accumulation in the pipelines, especially the dust accumulation in the outlet of the fan and the return furnace pipeline.

Moreover, the flow rate at the above-mentioned metering point is relatively low, and the pressure is relatively low. The gas contains tar and naphthalene. The composition changes due to different coal blending ratios, and also changes with the condensation of water vapor in the pipeline.

Therefore, the requirements for measuring instruments at the measuring point are as follows;

  1. Measuring instruments are required to be not affected by gas composition (density)
  2. The measuring instrument can adapt to the measuring characteristics of low flow rate and low pressure of coke oven gas
  3. Dirt resistant, and the measurement is not affected by tar and naphthalene in the gas
  4. In the measurement process, the measurement instrument can remove the influence of pipe dust on the measurement
  5. It can be constructed online and installed without stopping the air.

Extended reading: Buy Digital Gas Flow Meters & Controllers For Air-O2-N2-CO2

Comparison of characteristics of ultrasonic flowmeter, smart target flowmeter and thermal flowmeter

NameUltrasoundTargetThermal
Turndown ratio1:1001:101:10
Dirty influencenoBigBig
Composition influencenoBigBig
Installation concentricity requirementsgeneralhighhigh
Pipeline fouling effectgeneralBigBig
Highest measurement accuracy±0.15%±0.2%±0.5%
Repeatabilityit is goodgeneralgeneral
Temperature and pressure compensationHaveHaveHave
Storing datacancancan
Requirements for front and rear straight pipes10D before, 5D after10D before 5D5D before, 3D after
Trade measurementcanGenerally not donecan
Pressure lossnoLargersmall
Movable partsnonono
Can measure pulsating flowcanCan’tCan’t
Two-way meteringcancanCan’t
Eddy current influenceno effectinfluentialinfluential
Flow velocity distribution influenceno effectinfluentialinfluential
One-time input pricehighlowlow
Online repaircancancan
Service lifeMore than 10 years6 years6 years
Daily maintenance feelowhighhigh
Does maintenance need to stop gasNot neededNot neededNot needed

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Analysis of media characteristics of on-site metering points

1.The impact of dirt.

Coke oven gas contains impurities such as tar and naphthalene. These impurities will adhere to the pipes and also to the measuring instruments.

Impurities adhere to the probe of the ultrasonic flowmeter. It does not affect the measurement accuracy. It only reduces the intensity of the ultrasonic wave. According to the experience of using the ultrasonic flowmeter, the ultrasonic probe can still work normally if it is adhered with 1cm thick tar. Therefore, the ultrasonic probe is pulled out and cleaned regularly (usually three months) to ensure the normal operation of the ultrasonic flowmeter.

The adhesion of tar and naphthalene to the temperature measurement element of the thermal flowmeter will directly cause the temperature measurement data to be distorted. Therefore, the measurement performance is an abnormal increase in the flow rate data. The solution is to clean regularly, but the adhesion process is a gradual process, so the data of the flowmeter is gradually increasing.

Tar and naphthalene adhere to the target plate of the target flowmeter. It will cause the indication value to increase abnormally. The solution is to clean it regularly. However, the adhesion process is a gradual process, and the data of the flowmeter is constantly increasing.

From the comparison of the three, only the ultrasonic flowmeter is not affected by the pollution of coke oven gas.

2.Composition influence.

The composition of coke oven gas is not a fixed value. The gas composition changes with the coal blending ratio. At the same time, the content of water vapor in the gas is also not a fixed value. It also changes with the outside temperature and the temperature in the pipeline.

The ultrasonic flowmeter directly measures the flow rate of the gas, and the measurement and calculation formula have nothing to do with the gas composition.

The target flowmeter is a differential pressure flowmeter. The measurement and calculation formulas have a great relationship with the gas composition, and the measurement is affected by the gas composition.

Thermal flow meters are mass flow meters, and the measurement and calculation formulas have a great relationship with the gas composition, and the measurement is affected by the gas composition.

And, Industrial Gas Measurement with Digital Gas Mass Flow Meters

3.Requirements for installation concentricity

Because the flowmeter is installed online, the on-site installation methods and methods put high demands on measuring instruments.

The most important thing in the installation of ultrasonic flowmeter is the centering of the probe, which is installed on the valve stub at the site. The flowmeter has an adjustment screw that can be fine-tuned. Ensure that the site installation is completely centered. At the same time, the ultrasonic flowmeter only needs to be installed on the central axis. There is no need to consider the influence of the dust at the bottom of the pipeline on the central axis of the pipeline.

Due to the product structure and working principle of the target flowmeter, the target plate needs to be installed on the center of the pipe cross-sectional area. Due to the dust accumulation at the bottom of the pipeline, concentric installation in the pipeline is extremely difficult. Therefore, the target flowmeter is not suitable for installation on the pipeline with dust accumulation at the bottom of the pipeline.

Thermal flow meters need to be installed on the center of the pipe cross-sectional area due to the product structure and working principle. Due to the dust accumulation at the bottom of the pipeline, concentric installation in the pipeline is extremely difficult. Therefore, thermal flow meters are not suitable for installation on pipes with dust at the bottom of the pipe.

4.The influence of dust accumulation in pipelines

Sino-Inst has been installing ultrasonic flowmeters on site for a long time. It has accumulated a complete set of calculation methods and measurement methods for the cross-sectional area of ​​pipe dust. The influence of pipe dust on measurement can be reduced to a minimum. It can effectively avoid pipe dust on gas ultrasonic flow.

Extended reading: V-Cone Flow Meter Applications

Use cost and economic benefit analysis

1.One-time investment

Because it is a transformation project, the characteristics of the wide range ratio of the gas ultrasonic flowmeter cannot be brought into play. In terms of one-time investment, the gas ultrasonic flowmeter is higher than the target flowmeter and the thermal flowmeter.

2.Long-term operating costs

Due to the long-term operation of the flowmeter, there are costs in the following aspects: equipment maintenance costs, calibration costs, replacement parts costs, and operator labor costs.

(1) Equipment maintenance fee
Because the ultrasonic flowmeter is a maintenance-free instrument. The routine maintenance work is only to clean the probe regularly. The maintenance difficulty and frequency of thermal and target flowmeters are greater than that of ultrasonic flowmeters, which require frequent maintenance. Therefore, the maintenance cost of the latter is huge Higher than the former.

(2) Daily maintenance
Because the target plate is deformed and stuck during use, the target plate needs to be replaced frequently, and the target plate needs to be replaced frequently, and the cost is increased. Ultrasonic flowmeter does not require replacement parts. The probe can be replaced and replaced under pressure. Clean, other parts don’t need to be replaced basically.

(3) Pumping costs
Due to the low pressure of coke oven gas, the low flow rate. The target plate of the target flowmeter is required to be large, and the pressure loss of the flowmeter is large, which increases the load of the compressor. After years of practice, it has been proved that the operating cost increases with the increase of pressure loss. Pumping costs are also a considerable expense.

(4) Labor costs
Operator labor costs. The daily maintenance of the target flowmeter is relatively high, and the labor cost is a lot. The ultrasonic flowmeter is unattended and basically does not need maintenance. Therefore, the cost of operation and maintenance for the ultrasonic flowmeter will be much lower than that of the target flowmeter.

3.Management benefits

Due to the measurement characteristics of the gas ultrasonic flowmeter, it can maintain good measurement accuracy and stability in the medium of coke oven gas for a long time. Therefore, it can provide a basis for the daily production management and scheduling of coke ovens in coking enterprises. Improve the level of comprehensive gas utilization , Reduce gas emissions and combustion. It can greatly help enterprises in energy saving and emission reduction. Significantly improve overall benefits.

Especially in the existing coke oven gas to natural gas project. Accurate measurement can effectively improve the management level of the enterprise. Improve the comprehensive use efficiency of coke oven gas, reduce costs and increase efficiency.

Remarks:

  1. Jiangsu Shagang Group lists gas ultrasonic flowmeters as the only selection instrument for gas measurement. More than 50 sets of gas ultrasonic flowmeters are used on coal gas. Energy management has been implemented for coke oven gas, converter gas and blast furnace gas since 2013 Since then, it has not only improved the comprehensive utilization efficiency of coal gas, but also increased the production efficiency of coke ovens. The annual gas emission rate control has also been effectively controlled, and the annual direct economic benefit is more than 40 million yuan.
  2. Shandong Weijiao Xuecheng New Energy is also in its coke oven gas to natural gas project. The gas ultrasonic flowmeter is included in the design selection as the only measuring instrument for coke oven gas.

To sum up, although the gas ultrasonic flowmeter has a large one-time investment, the long-term operating cost is low, and the management benefits are far greater than the equipment investment.

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Sino-Inst offer over 10 Flow Meters for Coke Oven Gas Measurement.

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

Sino-Inst is Flow Meters suppliers, located in China. Flow Meters products are most popular in North America, Mid East, and Eastern Europe. The United States, and India, which export 99%, 1%, and 1% of Magnetic Flow Meters respectively.

Buyer’s Guide: Flow Technology-Turbine Flow Meter

Flow technology turbine flow meter China, this article takes you to understand everything before purchasing turbine flow meters.

Turbine flow meter is often used for liquid and gas measurement. The gas turbine is mainly natural gas. Liquid Turbine Flow is the turbine flow meter suitable for liquid flow rate measurement. Like water flow, Diesel flow. The turbine flow meter is the most popular equipment to measure flow electronically. They offer a wide flow and application rangeability. Turbine Flow Meters are easy to maintain, durable and versatile.

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

Features of Turbine Flowmeters

  1. The pressure loss is small, and the impeller has anti-corrosion function;
  2. Adopt advanced ultra-low power consumption single-chip microcomputer technology. The whole machine has strong functions, low power consumption and superior performance;
  3. Intelligent flow display with nonlinear precision compensation function. The accuracy of the revised formula is better than ±0.02%;
  4. The instrument coefficient can be set online by the button. And can be displayed on the LCD screen. The LCD screen is intuitive and clear, with strong reliability;
  5. EEPROM is used to protect the cumulative flow and instrument coefficient from power failure. The protection period is greater than 10 years;
  6. Adopt high-performance MCU central processing unit. Completion of data collection and processing, display output, cumulative flow and instantaneous flow are the same;
  7. Realization of convenient man-machine interface with screen display. Data transmission in standard 485 format;
  8. It adopts full hard alloy (tungsten carbide) shielded cantilever beam structure bearing. Integrates rolling bearing and pressure bearing. Greatly improved bearing life. And can work in the medium with a small amount of sediment and dirt;
  9. Adopt 1Cr18Ni9Ti all stainless steel structure. (The turbine adopts 2Cr13) Good anti-corrosion performance; 10. Easy to maintain, with self-rectifying structure. Small, lightweight, and simple in structure, it can be assembled and disassembled in a short time;
  10. Simple internal cleaning;
  11. Strong anti-magnetic interference and vibration ability, reliable performance and long service life;
  12. The lower limit flow rate is low and the measurement range is wide;
  13. On-site display type LCD screen shows clear and intuitive, low power consumption. 3V lithium battery power supply can run continuously for more than 5 years;
  14. Corrosion-resistant materials are optional;

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Featured Turbine Flow Meters for Sale

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

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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.

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

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.

Extended reading: Turbine Insertion Flow Meter for Large Diameter Pipeline

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.

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Turbine Flow Meter Datasheet

Sino-Inst, as a manufacturer of turbine flow meters, provides customers with high-quality gas and liquid turbine flow meters. For the technical parameters of turbine flow meters, please refer to our Turbine Flow Meter Datasheet.

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.

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Turbine flow meter Applications

Turbine flow meters include liquid turbine flow meters and gas turbine flow meters.

The liquid turbine flowmeter is made of stainless steel and can be used to measure clean and low-viscosity liquids.
Such as water, alcohol, methanol, etc.;
Turbine flowmeter made of all tetrafluoroethylene can be used to measure all corrosive liquids such as acid, alkali, salt solution and so on.

The gas turbine flowmeter is mainly used to measure the instantaneous flow and cumulative flow of general clean gases such as natural gas, air, hydrogen, and nitrogen.

Turbine flow meter for measuring oil

Turbine flowmeters can measure media such as special oils.

There are many types of oils, such as edible oil, peanut oil, diesel oil, gasoline, etc. are all oils. Turbine flowmeters measure the flow of liquids, but it is not recommended to use them for too viscous liquids. Because the turbine flowmeter uses the principle of impeller rotation to measure the flow. And too viscous liquid will affect the rotation of the impeller.

Turbine flow meters can measure low-temperature and non-viscous special oils. If the site of the user’s working condition measurement is a special oil such as high temperature type. It is also impossible to use a turbine flowmeter to measure, and the turbine flowmeter can only measure the working temperature when the site ambient temperature is 160°C.

Flow measurement of some low-viscosity oil products, such as gasoline, kerosene, diesel oil, and flow measurement of heavy oil and residual oil whose viscosity has been reduced by heating.

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Turbine Flow Meter for Cryogenic Liquids – Liquid Nitrogen, Liquid Oxygen

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.

Quantitative control with turbine flowmeter

Quantitative control system is composed of flow totalizer, turbine flowmeter, solenoid valve and so on. The liquid output can be freely set through the linkage of the equipment. More accurate realization of material ratio. Improve production efficiency in an all-round way.

Its working principle is to provide a flow signal to the control instrument through the flow meter. Set the required quantitative value on the control instrument panel, and when the set quantitative value is reached, the solenoid valve, water pump, etc. will be automatically closed. The solenoid valve and water pump can be controlled at the same time, and can also be controlled separately. It can be widely used in food, pharmaceutical, fermentation, environmental protection, fine chemical and other industries.

Features:
1. Turbine flowmeter for quantitative control
2. Real-time display of flow information
3. Using high-precision impeller, the performance is more stable
4. 304 stainless steel structure, weak acid and alkali resistance, long service life
5. Aviation connector connection, stronger connection, more convenient disassembly

The flowmeter control system is mainly used in workshop batching, water distribution, dispensing, quantitative perfusion and timing and quantitative control of various liquids or gases.
In industrial and agricultural production and life, chemical raw materials such as solid-liquid mixtures (cement slurry, sludge, etc.) Quantitative control system. It can be operated very simply. It can meet the work of a large number of manpower and improve work efficiency.

Frequently
Asked
Questions

Turbine flowmeter is to install a rotor in the circulation channel, when the liquid flows through it will drive the blades to rotate. Then the flow rate is measured according to the number of rotations.

The intelligent liquid turbine flowmeter is a new type of intelligent instrument that integrates the turbine flow sensor and display integration, which is developed using advanced ultra-low power single-chip microcomputer technology. It has the obvious advantages of compact structure, intuitive and clear reading, high reliability, no interference from external power supply, lightning resistance, and low cost.

Use the volumetric tank method to calibrate the turbine flowmeter.
The volume of the standard water tank is determined by filling the standard water tank with water, which is measured by a water tank calibrated and certified by the National Institute of Standards and Technology.

Regularly check the volume of these calibration tanks. Each flow meter and kit are placed in the assembly line, and the calibration tank is filled at five different flow rates within the range of the meter. One round is executed at the maximum rate, one round is executed at the minimum rate, and the three rounds are executed at an equidistant interval between the maximum rate and the minimum rate.

Record the total number of pulses generated by the flowmeter at each flow rate. Divide the total pulse by the total volume at each flow rate to determine the calibration factor. The average factor is determined to be half between the high factor and the low factor.

The flowmeter is marked with an averaging factor. For industrial grade instruments, the maximum deviation between the average coefficient and the upper or lower limit coefficient cannot exceed ±0.5%, and for standard grade instruments, it cannot exceed ±1.0%.

The above is the whole content of how to calibrate the turbine flowmeter. If you have any questions or purchase requirements, please contact Sino-Inst directly.

The principle of Coriolis mass flowmeter mass measurement is Newton’s second law F=Ma. When the fluid flows in the vibrating tube, it will produce Coriolis force proportional to the mass flow.

When there is no fluid flowing, the vibrating tube will not be twisted, and the signals detected by the electromagnetic signal detectors on both sides of the vibrating tube are in phase.

When fluid passes by, the vibrating tube will be twisted under the action of torque, and there will be a phase difference between the two detectors.

The transmitter measures the lag time between the left and right detection signals. This time difference is multiplied by the flow calibration coefficient to determine the mass flow.

The density measurement principle of Coriolis mass flowmeter is that the vibration frequency is inversely proportional to the square root of the fluid density. The fluid density is determined by measuring the vibration frequency.

Therefore, the mass flow meter can realize the measurement of fluid mass flow and the measurement of fluid density.

Flow Metering Principals

  • Differential Pressure Flowmeters
  • Velocity Flowmeters
  • Positive Displacement Flowmeters
  • Mass Flowmeters
  • For Open Channel Flowmeters – weirs, flumes, submerged orifices, current meters, acoustic flow meters and more

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

More Liquid and Gas Flow Meters

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Sino-Inst, Manufacuturer for Turbine Flow Meters, like: gas turbine flow meter, liquid turbine flow meter, sanitary turbine flow meter, insertion turbine flow meter, steam turbine flow meter, and natural gas turbine flow meter.

Sino-Inst’s Turbine 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.

Ultrasonic Water Level Sensors

Ultrasonic sensor for water level measurement

Ultrasonic Water Level Sensor refers to the ultrasonic level sensor used to measure the water level. Used for industrial liquid tanks, or river water level non-contact monitoring and control.

Ultrasonic Water Level Sensor is also often called “Ultrasonic Level Sensor”, “Ultrasonic Level Detector”, “Ultrasonic Level Sensor 4-20ma” or “Ultrasonic Level Transmitter” “Ultrasonic liquid level sensor”

  • Range: 1m, 2m, 5m, 10m, 15m, 20m, 30m, 50m, 60m, 70m optional.
  • Integrated type, split type, explosion-proof type, hand-held type optional.
  • Low cost, Easy to install.
  • Both solid and liquid can be measured
  • Non-contact measurement
  • Reference price:USD200-2000.00/pc

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

Featured Ultrasonic Water Level Sensors

ModelHigh-precision with small blind areaUniversal ultrasonic level meterExplosion-proofSplit type
Range    1m, 2m5-60 m0-15 m (large range can be customized);5 -70 meters
Blind area<0.06-0.15m<0.4-1.5m0.35 m~0.5 m0.25m~0.6m
Accuracy<±1mm±0.25%F.S±0.5%F.S0.5%-1.0%
Output4-20mA, RS485Switch output: three NPN4-20mA, 4-20mA+HART, RS485
Switch output: NPN/relay
Analog output: 4~20 mA (optional 1-2 relay output);
digital output: RS485(modbus) protocol;
Analog output: 2 4~20mA/5100 loads
Relay output: 2 groups of AC250V/8A or DC30V/5A state programmable (optional)
Power supply24VDC 24VDC, 220VACDC12V, DC24V/AC220V220VAC+15%50Hz or 24VDC120mA
InstallationM30×1.5 or G11/2M60×2M60×2 according to range and probe selection

Ultrasonic Level Measurement Applications

  1. The flexible design of the ultrasonic liquid level sensor can be applied to integrated systems or replace float switches, conductivity switches and static pressure sensors;
  2. It is suitable for the comprehensive application of fluid control and chemical supply system;
  3. Widely used in various atmospheric storage tanks, process tanks, small tanks and small containers, pump lifting stations, waste water storage tanks.

Extended reading: Capacitive water level sensor

Sewage level measurement

The composition of sewage is complex and corrosive, and floating objects are easily formed on the surface of the liquid level. Therefore, the level gauge needs to be sensitive and reliable.

Ultrasonic signal has strong penetrating power and sensitive response, which is a reliable helper for your liquid level measurement.

Clean water level measurement

The demand for water level measurement of rivers and lakes and road area is very common.

The liquid level data must not only be reliable, but also be able to upload the data online to facilitate real-time monitoring.

Ultrasound can be equipped with 485 function, which will effectively meet your needs.

Corrosive level measurement

In acid-base level measurement, not only the liquid is corroded, but also the chemical reaction will generate heat, which will interfere with the level measurement.

Ultrasonic can be customized for anti-corrosion, helping you to reliably realize automatic dosing ratio.

Particle level measurement

Particle level measurement is easy to produce false signals, which requires the level gauge to filter clutter.

The ultrasonic level gauge has an intelligent algorithm to automatically remove false echoes, and is used for level measurement of tanks and other materials. It is accurate and reliable!

Ultrasonic water level sensor working principle

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.

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

Extended reading: The Secret of Ultrasonic Level Measurement

Ultrasonic Level Sensor Advantages and Disadvantages

The Advantages of ultrasonic liquid level gauge are very outstanding. It is mainly reflected in the following aspects:

  1. The structure is simple. The reading is convenient. It is very easy to install and maintain.
  2. Safe and clean. The instrument has long service life. The measurement is stable and reliable with high precision.
  3. Adopt non-contact measurement. It is not easily affected by the viscosity and density of the liquid.
  4. Simple installation and operation
  5. No moving parts
  6. Continuous water level detection
  7. Can be used some non-liquid materials/media
  8. High accuracy & sensitivity

Of course, the ultrasonic liquid level gauge also has its own limitations and insurmountable defects. Specifically, Disadvantages is mainly manifested in:

  1. There is a blind spot in ultrasonic liquid level sensor measurement.
  2. Ultrasonic liquid level sensor measurement is easily affected by temperature.
  3. There should be no obstacles under the ultrasonic liquid level sensor.
  4. Ultrasonic liquid level sensor should not be used to measure pressure vessels.
  5. The ultrasonic liquid level sensor cannot be used in occasions where there is water mist, a large amount of foaming medium, and a volatile medium.
  6. Ultrasonic liquid level sensor is greatly affected by dust.

Can ultrasonic sensor detect water level?

Yes. Ultrasonic sensors can be used for water level measurement. And, most of the time, ultrasonic water level sensor is a common choice for water level measurement sensors.

How does ultrasonic water level sensor work?

The ultrasonic level sensor adopts the ultrasonic pulse echo method to achieve liquid level measurement. Specifically, the transducer (probe) of the ultrasonic level gauge emits high-frequency ultrasonic pulses. When it encounters the surface of the liquid level to be measured, the sound wave is reflected back, and part of the reflected echo is received by the transducer (probe) and converted into With electrical signals, users can know the water level almost in real time based on the reflected signals.

Which sensor is used in water level indicator?

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

Read more about: 7 Level Senors for Tank Level Measurement

Ultrasonic level sensor for non-sealed tank

For non-sealed tanks, ultrasonic sensors can be used to install on the top of the tank for liquid level measurement. This is a common usage of ultrasonic level sensors.

Ultrasonic level sensor for sealed tank

The External Ultrasonic Tank Level Sensor adopts the sonar echo ranging principle. It overcomes the influence of the tank wall on the transmission of ultrasonic signals. It adopts advanced digital signal processing technology. It can truly realize the non-contact, high-precision measurement of the liquid level in the tank.

Extended reading: Radar Liquid Level Sensor|Corrosive, steam, volatile liquids

Liquid level controller refers to the control of high and low liquid levels through mechanical or electronic methods. It Can control solenoid valves, water pumps, etc. So as to achieve semi-automation or full automation. There are many methods, depending on the choice of different products.

Ultrasonic Non-contact Liquid Level Controller is attached to the outside of the tank. Non-contact detection of tank liquid level. Liquid Level Controller supports liquid level alarm, fault alarm, and 485, Modbus, 4-20mA, FoundationFieldBus, PROFIBUS or Hart.

Ultrasonic Water Level Sensors are often combined with display instruments and control valves for tank level measurement, alarm and control.

Read more about: Water Tank Level Sensors for Level Control

Related products

The specific ultrasonic water level sensor price needs to be selected and quoted according to your measurement parameters. Please contact Sino-Inst sales engineer!

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

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Non Contact Liquid Level Sensor

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External Ultrasonic Tank Level Sensor

The external ultrasonic tank level sensors is the first choice for measuring liquid level and material level on various industrial tanks. Sino-Inst offers a variety of  ultrasonic level meters for tank level measurement. If you have any questions, please…

Extended reading: Water Tank Level Controller

Sino-Inst is a manufacturer of Ultrasonic Water Level Sensors.

Sino-Inst offers over 20 Ultrasonic Water Level Sensors at best price. About 50% of these are Pressure level Transducer, 40% are Differential Pressure transmitters, and 40% are Ultrasonic Water Level transmitters.
A wide variety of Ultrasonic Water Level Sensors options are available to you, such as free samples, paid samples. 

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Water Level Sensors, located in China. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Ultrasonic Water Level Sensors 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.

Explain the difference: Float level sensor, Float level switch and Float level controller

Float level switch, Float level sensor and Float level controller are commonly used liquid level monitoring instruments.

Users are consulting on float level timing, and often confuse it with float level switches and float level gauge controllers. But because they are not the same product, their functions and prices are quite different. So, what are the differences between the float level gauge, the float level switch and the float level controller?

Generally speaking, the main differences between float level gauge, float level switch and float level controller are as follows:

1.Float level sensor, Float level switch and Float level controller Structure difference

Float level gauges are generally straight rod type. A maglev ball is placed on the straight rod, and the reed switch in the straight rod can be attracted by moving the maglev ball up and down. The purpose of increasing the resistance value in series is achieved by attracting the reed switch. Because the output 4-20mA remote signal is a current signal, under the condition of a certain voltage, the current is proportional to the resistance. The greater the resistance, the greater the current. Therefore, there is a series circuit board circuit inside the straight rod of the float level gauge.

The reed switch is directly placed inside the float level controller, without the need to design a circuit board separately.

The structure of the float level switch is the simplest.

Float level sensor can also be used with paperless recorder.

Extended reading: Float Level Sensors – Single and Multipoint

2.Float level sensor, Float level switch and Float level controller Price difference

Because the structure of the float level gauge is more complicated, its price is relatively high. The price of float level controller is second, and the price of float level switch is the cheapest.

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

3.Float level sensor, Float level switch and Float level controller Functional difference

Float Level Gauge A level gauge that can measure liquid level values. The float level controller cannot display the specific level value. Only one switch value alarm point signal is given.

The float level switch is especially suitable for use in small tanks, but you need to open the hole at the height you need. Then install one end of the float at the position where the alarm is needed. When the liquid level reaches the position, the floating ball will be lifted up and the contact point will be automatically disconnected to act as an alarm.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Featured Float level sensor, Float level switch and Float level controller

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

Extended reading: Radar Level Sensor Advantages and Disadvantages

The customer consults the float level gauge, and the salesperson asks for detailed parameters. The customer just said that it needs 8 on-off alarm points with a measuring length of 5 meters, and nothing else. Our sales staff made a quotation based on this parameter.

After the quotation. Suddenly, the customer asked for a 4-20mA remote signal with a secondary display meter. In this way, the price of the second quotation more than doubled. Customers began to question the price.

Customers think this is the same product. Why does one more parameter make people feel that they are completely two products? This requires customers to clearly understand the specific differences between the float level gauge, the float level controller, and the float level switch.

The float level gauge is used as a level gauge that can measure the liquid level value. Float level gauges are generally straight rod type. A maglev ball is set on the straight rod. Move the maglev ball up and down to attract the reed switch in the straight rod. The purpose of increasing the resistance value in series is achieved by attracting the reed switch.

Because the output 4-20mA remote signal is a current signal. In the case of a certain voltage, current and resistance are proportional. The greater the resistance, the greater the current. Therefore, the float level gauge has a series circuit board circuit inside the straight rod, so the price is relatively high.

And if there is no need to display the specific level value, then there is no need to output a 4-20mA signal to the secondary instrument in the straight rod of the float level gauge. It only needs to be able to give a switch alarm point signal. Then the reed switch can be placed directly inside the float level gauge, without the need to design the circuit board separately. This way the price will be different. Of course, the name becomes the float level controller. So the price is different.

Many customers will also say that it is the float level gauge that they are looking for when they buy it. In fact, to be more precise, this cannot be called a float level gauge. Because it no longer has the function of measuring liquid level value.

The float level switch is simpler than this, and the structure is simpler. Especially suitable for use in small tanks. The float level switch needs to make a hole at the required height by itself, and then install the float at the position where the alarm is needed. When the liquid level reaches the position, the floating ball will be lifted up and the contact point will be automatically disconnected to act as an alarm.

Extended reading: Ultrasonic level transmitter for Hazardous Liquids

What is float level switch?

The float level switch is a simple-structured medium level measurement, using a level controller that is easy to install. Because the installation has no complicated circuits, the operation is not affected. The user only needs to select the correct material when selecting the model. It is suitable for measuring liquid, pressure or temperature in any environment.

Liquid level switches are widely used in industrial equipment, agricultural equipment, and household appliances. The main structure of the float liquid level switch is composed of a magnetic reed switch and a float. The float has magnetic materials. When the float moves up and down with the measured liquid level, the magnetic reed switch is touched to detect the liquid level position.

Read more about: 😉Liquid level float switch technology|continuous-point level

What is a normally open float switch?

Float type liquid level switch can choose the open and close type of contact when ordering. Normally open or normally closed

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

How do float level sensors work?

Float level meter is an instrument for measuring liquid level. It is widely used in the field of liquid measurement. Many industries will choose to use it for measurement equipment. Such as the petroleum, chemical, and pharmaceutical industries.

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.

Guess you like: Float Level Sensor Operating Principle

Float level switch working principle

The float level switch is actually equivalent to a limit switch.

When the liquid level is low, the low liquid level switch is closed to control the water pump to turn on and add water.

When the high liquid level is reached, the high liquid level switch is closed to control the water pump to stop.

Different float level switches are different, some are normally open and some are normally closed. Just pay attention when wiring.

The principle of the float switch is as follows:

Liquids have buoyancy, and the float system (generally with corresponding auxiliary equipment) is made according to the buoyancy of the liquid.

When the liquid level rises, the float system rises accordingly, and similarly when the liquid level falls, it also drops accordingly.

When it rises or falls to the set position, the float system will hit the limit switch (or other microelectronic equipment) in the set position.

So that the travel switch sends out an electric signal, and the electric control device will act immediately when receiving the electric signal, cut off or connect the power supply, forming an automatic control system.

It is basically a reed switch structure, with a movable float on the outside and a magnet inside the ball. When the magnet gets close to the reed pipe by buoyancy, the contacts in the reed pipe are turned on or off.

The principle of the reed switch is to repel the same magnetic poles and attract different magnetic poles.

The switch of the reed switch in the liquid level switch controls the corresponding operating mechanism to form a complete set of circuits. Such as: liquid level display, automatic liquid filling, liquid full alarm and so on.

Extended reading: Capacitive water level sensor

You may like:

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

A wide variety of Float level switches and sensors options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Float level switches and sensors instrumentation, located in China.

Non Contact Liquid Level Sensor

The Non Contact Liquid Level Sensor is not in contact with the measured medium. The Non Contact Liquid Level Sensors provided by Sino-Inst is not Gravity Non-contact Liquid Level Sensors. It is the liquid level sensor used in industrial tanks, reservoirs, and open channels. There are mainly ultrasonic level sensors and radar level sensors.

Featured Non Contact Liquid Level Sensors

Read more about 7 Level Senors for Tank Level Measurement

In the automated production process, in order to ensure the consistency of product quality, the time when the production process is directly monitored and intervened by humans has gone.

Liquid level measurement and monitoring play an increasingly important role. It can be said that liquid level measurement and monitoring It directly affect the quality of the product and even whether the production process can proceed smoothly.

Contact measurement
A measuring method in which the sensing element of a measuring tool or measuring instrument obtains measurement information through direct contact with the measured surface.

Non-contact measurement
Non-contact measurement is based on photoelectric, electromagnetic, and other technologies. Without touching the surface of the object to be measured, a measurement method to obtain information on the surface parameters of the object.

Extended reading: Ultrasonic liquid level sensors

Methods of liquid level measurement:

There are mainly the following methods and principles for measuring liquid levels in the industrial field.

  1. Direct display category. Such as glass tube, glass plate, etc.;
  2. Floating ball class. Such as magnetic flaps, small floats, connecting rod floats, cable floats, side-mounted floats, continuous floats, etc.
  3. Contact induction class. Capacitance level gauge, magnetic to telescopic level gauge, pressure type level gauge, etc.;
  4. Non-contact type. Ultrasonic level gauge, radar wave level gauge, etc.

Guess you like Continuous Float Level Sensor & Switches 

  1. Liquid level measurement of sealed tank
  2. Liquid level detection of fire storage tank
  3. Liquid level measurement of open tank
  4. Liquid level detection in open channels, rivers, reservoirs, etc.

Extended reading: Radar Non Contact Water Level Sensor

Ultrasonic Level Sensor Working Principle

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.

Read more about: Non-invasive Ultrasonic Tank Level Sensor Working Principle

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.

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

Read More about Ultrasonic Level Sensing

Radar Level Measurement: Measuring Principle

Very short microwave pulses with very low energy are transmitted and received through the antenna system. The radar wave runs at the speed of light. The operating time can be converted into level signals by electronic components. A special time extension method can ensure stable and accurate measurement in a very short time.

Electromagnetic waves propagate in the air at the speed of light. The distance between the radar level gauge and the surface of the material can be expressed by the following formula:

D = (1/2)*CT

In the formula: D ———the distance between the radar level gauge and the surface of the material; C ———Speed of light; T ———Pulse time.

Then the liquid level is:   L = E-D

In the formula: L — liquid level; E ———The total height of the tank;  D ———Air height.

Even in the presence of false reflections, the new micro-processing technology and the unique ECHOFOX- software can accurately analyze the level echo. By inputting the size of the container, the distance value can be converted into a signal proportional to the level. The instrument can be debugged with empty positions.

Read More about Non-Contacting Radar Level Measurement

Ultrasonic liquid level sensors realize the non-contact continuous detection of liquid level.

Ultrasonic liquid level sensors echo sounding sensors for measuring liquid level. And converting it to an electrical signal to send to other instrumentation. Ultrasonic Level Transmitters & Ultrasonic Level Sensors can be used for Non-intrusive level detection of sealed tanks. It can be used for liquid level detection of unsealed tanks and open channels such as rivers.

Hope you can purchase Ultrasonic liquid level sensors at the best price after reading this:

Extended Reading: Procurement Guide for Ultrasonic liquid level sensors

Liquid Level Gauge also called Liquid level indicator. Liquid Level Gauge has contact and non-contact type. Here mainly discusses the non-contact Liquid Level Gauge, which is used for CO2 cylinder level measurement.

Portable co2 bottle liquid level gauge uses ultrasonic non-contact measurement technology. Detect and display the presence or absence of the Co2 cylinder liquid level. The Digital portable liquid level gauges are designed to offer a simple, accurate, rapid and reliable method. Determining the liquid level of high or low pressure CO2, Halon, FM200, Propane, Novec 1230 and any liquefied gas under pressure. No need to move or weigh the cylinders.

Read More about CO2 Cylinder | Portable Liquid Level Gauge.

Ultrasonic Level Switch-External Mounted

Ultrasonic Level Switch, External Mounted (referred to as “external level switch”) is a new type of level measurement alarm device. Ultrasonic Level Switch is mainly used to detect the liquid level of the storage tank. It can realize the upper and lower limit alarm or monitor whether there is liquid in the pipeline (dry protection). The material of the storage tank can be various metals, non-metals or non-foamed plastics. The wall thickness can be Up to 70mm.

Ultrasonic Level Switch is not affected by factors such as medium density, dielectric constant, conductivity, reflection coefficient, pressure, temperature, precipitation, etc. It is suitable for various liquid levels in the pharmaceutical, petroleum, chemical, electric power, food and other industries Engineering control. Ultrasonic Level Switch is the ideal choice for the detection of toxic, highly corrosive, and dangerous liquid level.

Ultrasonic Non-contact Liquid Level Controller

The Liquid Level Controller is attached to the outside of the tank. Non-contact detection of tank liquid level. Liquid Level Controller supports liquid level alarm, fault alarm, and 485, Modbus, 4-20mA, FoundationFieldBus, PROFIBUS or Hart.

Liquid Level Controller is installed outside the tank. The HS-ULC-Pro Liquid Level Controller works based on the principle of ultrasonic waves, and is also called “externally attached liquid level switch. It is mainly used to detect the liquid level of the storage tank, and its sensor (digital probe) acts on the outer wall of the storage tank. It supports upper and lower limit alarms, tanks Body temperature display or monitor whether there is liquid in the pipeline. Liquid Level Controller is suitable for liquid level process control in the pharmaceutical, petroleum, chemical, electric power and other industries. For the monitoring of toxic, highly corrosive and dangerous liquids, HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller is an ideal choice.

Extended reading: Diesel fuel tank level gauges & indicators

All of the above are Non Contact Liquid Level measurement techniques. If you need to contact the medium to measure, you can consider using Liquid level float switches & sensors.

Extended reading: GWR Solid Level Sensor-Cement silo-Ash powder measure

Frequently
Asked
Questions

The representative products of non-contact liquid level measuring instruments are ultrasonic level meters and intelligent radar level meters. The working principle is to calculate the distance between the sensor and the measured object through the time of transmitting the signal and receiving the signal. Since the propagation speed in the air is constant, the distance between the liquid level sensor and the bottom of the container is constant, and the liquid level of the measured object can be known.

The non-contact level sensor means that the level can be detected without contacting the liquid. Under this advantage, the application field of the non-contact liquid level sensor has been greatly expanded.

Ultrasonic technology is not only used to measure level, but also can be used to measure depth.

The sensor that can measure the liquid level is the liquid level sensor. There are many kinds of common liquid level sensors. For example: float level sensor, hydrostatic level sensor, ultrasonic level sensor, radar level sensor, etc.

Different types of liquid level sensors work based on different principles.

For example, a commonly used water level sensor:
Liquid level sensor (hydrostatic level gauge/liquid level transmitter/liquid level sensor/water level sensor) is a pressure sensor that measures liquid level. The hydrostatic submersion type liquid level transmitter (liquid level gauge) is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. The isolated diffused silicon sensitive element or ceramic capacitive pressure sensitive sensor is used. Convert static pressure to electrical signal. After temperature compensation and linear correction, it is converted into a standard electrical signal (usually 4~20mA/1~5VDC).

Related Liquid Level Measurement Solutions

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External Tank Level Indicator

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Magnetic Level Gauge/Indicator

What is a magnetic type level gauge? A magnetic Level Gauge is also called a magnetic level indicator. Magnetic Level Gauge is developed based on the principle of buoyancy and…

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, and underground…

Laser Level Transmitter

What is a laser level transmitter? A laser level transmitter is also called a laser level meter. Industrial Accurate, non-contact, and uninterrupted real-time monitoring of material height. Designed for material…

Oil-water Interface Level Measurement Guide

Interface level measurement is very important for oil and gas, chemical tanks. At the same time, Interface level measurement is also a measurement and control challenge. In today’s increasingly modernized…

Sino-Inst offers over 20 Non Contact Liquid Level Sensors and transmitters for level measurement. About 50% of these are ultrasonic liquid level meters, 40% is the level switches.

A wide variety of Non Contact Liquid Level Sensors and transmitters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Non Contact Liquid Level Sensors and transmitters instrumentation, located in China.

Procurement Guide: Ultrasonic liquid level sensors

Ultrasonic liquid level sensors realize the non-contact continuous detection of liquid level.

Ultrasonic liquid level sensors echo sounding sensors for measuring liquid level. And converting it to an electrical signal to send to other instrumentation. Ultrasonic Level Transmitters & Ultrasonic Level Sensors can be used for Non-intrusive level detection of sealed tanks. It can be used for liquid level detection of unsealed tanks and open channels such as rivers.

Hope you can purchase Ultrasonic liquid level sensors at the best price after reading this Procurement Guide.

Featured Ultrasonic liquid level sensors

You can choose the appropriate Ultrasonic liquid level sensors according to your measurement requirements.

Used to seal tanks and fire tanks. For example CO2 tanks, Halon, FM200, Propane, Novec 1230 and any liquefied gas under pressure.

Portable Ultrasonic Liquid Level Indicator

Portable Ultrasonic Liquid Level Indicator allows you to conveniently detect the level of liquid available in a container /cylinder/pipe/tank. Ultrasonic principle, Non-contact.

Reference price: USD 1200-1800.00/pc

Used as a non-intrusive tank level gauge. For example Liquid ammonia, liquid chlorine, hydrochloric acid, bromine, chlorethylene, sulfuric acid, freon, and nitirc acid, etc.

HS-2000 Ultrasonic Tank Level Sensor-External Mounted

Reference price: USD 3700-6700.00/pc

HS-ULC Ultrasonic Level Switch-External Mounted

Reference price: USD 1200-2800.00/pc

HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller

Reference price: USD 4400-8955.00/pc

Used as an open-hole tank and open liquid level. Such as: fuel tank, open channel liquid level. River level, etc.

Extended reading: Guide to Ultrasonic Level Transmitters

Ultrasonic level sensor is a monitoring instrument for measuring liquid height, tank height, and material position.

Ultrasonic level sensor can adopt two-wire, three-wire or four-wire technology.

The two-wire system is: power supply and signal output are shared.
The three-wire system is: the power supply circuit and the signal output circuit are independent. When using DC 24v power supply, a 3-core cable can be used, and the negative terminal of the power supply and the negative terminal of the signal output share a core wire.
The four-wire system is: when using AC 220v power supply, or when using DC 24v power supply, when the power supply circuit and the signal output circuit are required to be completely isolated, a 4-core cable should be used.
DC or AC power supply, 4~20mADC, high and low switch output.

More about Ultrasonic Level Sensing Technology.

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.

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

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.

Read more about: 7 Level Senors for Tank Level Measurement

Ultrasonic level gauge is a sensor that emits ultrasonic waves. The sound waves are reflected by the liquid surface and then received by the same sensor. They are converted into electrical signals by piezoelectric crystals or magnetostrictive devices. The time between the transmission and reception of the sound waves is calculated to calculate the sensor The distance to the surface of the liquid being measured.

Very short microwave pulses with very low energy emitted by the radar level gauge are transmitted and received through the antenna system. Radar waves travel at the speed of light. The running time can be converted into a level signal by electronic components.

The radar level gauge is more accurate than the ultrasonic level. And the ultrasonic level gauge is not accurate when measuring the liquid level that produces the foam. Because the ultrasonic wave is reflected back when it hits the foam, the measured level is higher than the actual level. So The radar level gauge is used for the liquid level that is prone to foam. The microwave used by the radar level gauge can pass through foam. So it can also be used for level measurement of liquids that are prone to foam.

Extended reading: Radar Non Contact Water Level Sensor

Ultrasonic Level Sensor and Transmitter

The working principle of the ultrasonic level gauge is that the ultrasonic transducer (probe) emits high-frequency pulsed sound waves. When encountering the surface of the measured material (material), it is reflected and folded back, and the reflected echo is received by the transducer and converted into an electrical signal. The propagation time of a 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, the sound speed C and the sound transmission time T can be expressed by the formula: S=C×T/2.

Ultrasonic sensors are also ultrasonic transducers, that is, probes.

Ultrasonic sensors are mainly composed of piezoelectric wafers. It can both transmit and receive ultrasonic waves. Low-power ultrasonic probes are mostly used for detection. It has many different structures, which can be divided into straight probe (longitudinal wave), oblique probe (transverse wave), surface wave probe (surface wave), Lamb wave probe (Lamb wave), dual probe (one probe reflection, one probe reception) Wait.

Ultrasonic transmitter refers to an instrument that can convert liquid level detection signals into analog signals or other signals. For example, we can require the ultrasonic level transmitter to output a 4-20mA signal.

Extended reading: GWR Corrosive Liquid Chemical Level Sensor

Ultrasonic Level Sensor 4-20mA

4-20mA is the common output signal of ultrasonic level gauge. To be precise, it can be divided into 2-wire, 3-wire, and 4-wire.

Two-wire system: The two-wire ultrasonic level meter shares a loop for power supply (DC24V only) and signal output (DC4-20mA). Only two wires are used and it is the standard transmitter form. The downside is that the transmit power is weak. Not suitable for liquid level measurement with large fluctuations. When the liquid level has a large volatilization. Measurements are also not ideal.

Three-wire system: The three-wire ultrasonic level gauge is actually a four-wire system. Its power supply (only DC24V) is separated from the signal output (DC4-20mA) loop. Use two lines each. When their negative terminals are connected in common, three wires are usually sufficient. The advantage is that the transmit power is larger. Suitable for liquid level and material level measurement in a variety of conditions. The effect is better.

Four-wire system: The power supply (DC24V or AC220V) is separated from the signal output (DC4-20mA) loop. The advantage of using two wires each is that the transmit power is greater. At the same time, it provides high and low relay output, adding new functions.

Extended reading: Non-Contact Level Measurement

Ultrasonic Level Sensor for Solids

In theory, ultrasonic liquid level sensors can be used to detect solid material levels. However, the general range should be reduced. The particles are uniform and the thickness is moderate. For example, corn, sand, detection is still very good. But the range is almost halved. If the particles are too fine, such as flour, cement powder will not work well.

Some ultrasonic level gauges can detect solids and liquids. For example, VEGA’s ultrasonic level meter does not distinguish between solid and liquid models.

And some brands of ultrasonic level gauges can only measure liquids, such as Siemens ultrasonic level gauges. It distinguishes the models that measure liquids and the models that measure solids. There are also models that can measure solid liquids.

Extended reading: Magnetostrictive Level Transmitter Advantages And Disadvantages

Laser level transmitter for solids

Non Invasive Level Measurement

Non Invasive Level Measurement means that the liquid level sensor is attached to the outside of the tank to detect the liquid level. In this way, there is no need to perforate the tank. Installation and monitoring are very convenient.

At present, the most commonly used Non Invasive Level Measurement is the ultrasonic sensor.

Non Intrusive Level Gauge

In addition to the Non Intrusive Level sensors at the top of this article. We also have a Non Intrusive Level Gauge. This externally mounted ultrasonic level sensor is mostly used for truck fuel tank level monitoring. Of course, it can also be used for other tank level monitoring according to the parameters.

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.

Read more about Application 2: Tank Level Monitoring In The Oil And Gas Industry.

More Non Contact Liquid Level Sensors

Frequently
Asked
Questions

Ultrasonic liquid level detector is actually an ultrasonic sensor for liquid level detection.

Extended reading: Sludge Blanket Level Detector Appliactions

Ultrasonic liquid level sensor is a digital liquid level meter controlled by microprocessor. Ultrasonic pulses are emitted by sensors (transducers) during the measurement. The sound waves are picked up by the same sensor after being reflected off the surface of the liquid. Converted into electrical signals by piezoelectric crystals. And the distance between the sensor and the liquid surface to be measured is calculated from the time between the emission and reception of the sound wave. Because of the non-contact measurement. The measured medium is almost unlimited. It can be widely used to measure the height of various liquid and solid materials.

The working principle of the ultrasonic water level sensor is that the ultrasonic transducer (probe) emits high-frequency pulsed sound waves when it encounters the water surface and is reflected and folded back. The reflected echoes are received by the transducer and converted into electrical signals. The propagation time of a sound wave is proportional to the distance from the sound wave to the surface of the water.

Ultrasonic water level sensor is often used for water level monitoring in sewage stations, fire water tanks, reservoirs, etc.

Read more about: Ultrasonic Level Sensors for Liquids Applications

Yes, Ultrasonic sensors for liquid level monitoring are the most common applications.

Extended reading: Hydrostatic Level Measurement

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Sino-Inst offers over 10 Ultrasonic liquid Level Sensing sensors and transmitters for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Ultrasonic Level Sensing sensors and transmitters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Level Sensing sensors and transmitters instrumentation, located in China.

CO2 Cylinder | Portable Liquid Level Gauge

Liquid Level Gauge also called Liquid level indicator. Liquid Level Gauge has contact and non-contact type. Here mainly discusses the non-contact Liquid Level Gauge, which is used for CO2 cylinder level measurement.

Portable co2 bottle liquid level gauge uses ultrasonic non-contact measurement technology. Detect and display the presence or absence of the Co2 cylinder liquid level. The Digital portable liquid level gauges are designed to offer a simple, accurate, rapid and reliable method. Determining the liquid level of high or low pressure CO2, Halon, FM200, Propane, Novec 1230 and any liquefied gas under pressure. No need to move or weigh the cylinders.

Portable Liquid Level Gauge Features

  • No contact with medium
  • Suitable for toxic, corrosive, or invasive medium
  • No need for drilling or welding on the container wall
  • Advanced ultrasonic sensor technology
  • Reliable measurement results
  • Easy and convenient to operate and maintain
  • Ultrasonic adaptive detection algorithm
  • High-contrast OLED color display, suitable for outdoor use under strong light
  • The added ultrasonic-waveform-display function facilitates parameter testing, waveform comparing and application of other functions to ensure measurement accuracy in complicated situations
  • Gooduser interface design
  • Comprehensive software displaysmeasurement resulting a simple manner

PLI range of Liquid Level Gauges

British CLASS PLI range of liquid level gauges testing equipment:

The portable liquid level meter is used in the detection of gas in the liquid state in the fire extinguishing system. It mainly detects: CO2\FM200\Halon (halogen fire extinguishing agent and other substitutes).

The instrument can indicate the position of many gases in the cylinder when they are in the liquid state, including propane or other gases. It can also be used to indicate the oil level and water level in the container, etc. The working principle of the instrument is a different response of an ultrasonic pulse to liquid with and without the state.

The portable liquid level meter uses ultrasonic signals to penetrate the wall of the steel cylinder and then enter the liquid gas.

The instrument reflects how much echo it receives through the pointer of the instrument itself.

The deviation value reflected by the instrument allows us to clearly identify the position of the gas and liquid interface. In this way, a reliable liquid level position can be obtained.

💡 Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement

Further reading: Industrial LPG/Propane flow meter

PLI Plus Technical Specifications

  • Accuracy:  ±1.5mm
  • Features:  Power boost facility for cylinders in poor condition ~ Cylinder wall thickness selector for thick (>4mm) or thin (<4mm) walled cylinders.
  • Unit Dimensions: 200 x 100 x 40mm
  • Unit Weight: 570g (including batteries and leather case)
  • Sensor: 1.5m cable and magnetic clamp for hands-free use
  • Sensor Dimensions:  95 x 60 x 60mm
  • Temperature Range:  -10ºC to +50ºC*
  • 94cm-long extension arm
  • Power Supply: 2 x 9vPP3 batteries
  • Battery Life:  20 hours nominal with 2 PP3 alkaline batteries
  • Carry Case Dimensions: 450 x 370 x 100mm
  • Operational Weight:  680g
  • Shipping Weight:  2.5Kg

PLI Digital Technical Specifications

  • Accuracy:  ±1.5mm
  • Features:  Large graphic display ~ Automatic rapid set up ~ Temperature gauge in C & F to enable fast weight calculations ~ Smart plug-in to enable signal strength to be monitored as an audible signal from the internal speaker ~ Power boost facility for cylinders in poor condition ~ Cylinder wall thickness selector for thick (>4mm) or thin (<4mm) walled cylinders.
  • Unit Dimensions: 210 x 130 x 55mm
  • Unit Weight: 540g (including batteries and leather case)
  • Sensor: 1.5m cable and magnetic clamp for hands-free use
  • Sensor Dimensions:  95 x 60 x 60mm
  • Temperature Range:  -10ºC to +50ºC*
  • 94cm-long extension arm
  • Power Supply: 4 x AA batteries
  • Battery Life:  20 hours nominal with 4 x AA batteries
  • Carry Case Dimensions: 450 x 370 x 100mm
  • Operational Weight:  650g
  • Shipping Weight:  2.5Kg

ML 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.

Extended Reading: Laser level transmitter for water

ML Portable Ultrasonic Liquid Level Gauge Specifications

Measurement accuracy<2mm
Tank wall thickness3-30mm
Measurable tank materialSteel, stainless steel, glass, unformed plastics
Measurable mediumPure liquid, milky liquid, suspension liquid
Ambient temperature-20℃~60℃ (-4℉~+140℉)
Ambient humidity15%-85%RH
Power supply Two 18650 lithium batteries
Current150mAh (on average)

Read more about: External Ultrasonic Tank Level Sensor Working Principle

PLI PLUS vs ML Portable Liquid Level Gauges

Compare the two:

  1. Different accuracy:
    PLI PLUS Accuracy: ±1.5mm
    ML Accuracy: <2mm
  2. Different prices
    ML Portable Liquid Level Gauge. Made in China. Sino-Inst can provide users with the best prices. Save costs.

Please contact Sino-Inst sales engineer to apply for sales discount.

Extended reading: GWR Corrosive Liquid Chemical Level Sensor

Portable ultrasonic liquid level gauge for co2

Co2 cylinder specifications (external diameter division):

The CO2 cylinders measured by this meter are divided into the following 4 specifications: 215mm-225mm diameter cylinders. 270mm-280mm diameter cylinders. 345mm-355mm diameter cylinders. 395mm-405mm diameter cylinders. There are no excessive requirements for the height of the medium and the tank.

Co2 cylinder measurement operation:

  1. Select “co2 cylinder”-“Choose a suitable cylinder diameter” through the menu and enter the measurement interface.
  2. Hold the probe vertically and tightly on the tank, and press the <Measure> button to measure.
  3. Measurement results are based on measurement parameters and level indicator lights (red is “no liquid”, green is “with liquid”)
  4. Generally, the measurement is started from the bottom of the storage tank (measurement with liquid position). If the measurement parameter is> = 2, the current level is considered to be a liquid-free position. And <2 is considered to be a liquid level. if it is floating around 2, It is considered that the liquid level of the horizontal plane is approaching the liquid surface (usually about 5 cm).
  5. Take multiple points on the same horizontal plane for measurement. And take the result with the highest probability as the final result (avoid the interference of welds and unknown factors).
  6. Find the liquid level position step by step through the approximation measurement.

Co2 cylinder measurement Note:

Due to the irregular shape of the air outlet and the many welding kits on the top of the carbon dioxide cylinder, the bottom and top measurement results are invalid. (If the fuel tank is full, the top is usually empty).

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

More Featured Non-Contact Liquid Level Gauges

Sino-Inst offers over 20 Liquid Level Gauges and transmitters for level measurement. About 50% of these are ultrasonic liquid level meters, 40% is the level switches.

A wide variety of Liquid Level Gauges and transmitters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Liquid Level Gauges and transmitters instrumentation, located in China.

High Frequency Dynamic Pressure Sensor

Dynamic pressure sensor, the transmitter is a high frequency sensor.

The high frequency dynamic pressure sensor adopts silicon stack silicon technology. At the same time, it has high responsiveness. At the same time, it also has high accuracy in low frequency or static data. The high-frequency dynamic pressure sensor has its own hybrid temperature compensation, and the special processing can reach 2000℃ instantaneously. It can provide stable performance in a wide temperature range, with good linearity, high natural frequency, short rise time and wide excellent response frequency band.

Sino-Inst offers a variety of  Dynamic Pressure Sensors for pressure measurement. If you have any questions, please contact our sales engineers.

Features of High Frequency Dynamic Pressure Sensor

  • Wide measuring medium range
  • Wide pressure measurement range
  • High natural frequency up to 2MHz
  • Stable work
  • Strong anti-interference ability
  • Original imported components, reliable performance.
  • Small size, light weight, complete types, high cost performance

Read more about: What is a pressure sensor and how it works? 

Specifications of High Frequency Dynamic Pressure Sensor

Measuring range-100KPa~0~10KPa…200KPa…1MPa…100MPa
Type of pressureGauge pressure, absolute pressure, negative pressure
Long-term stabilityTypical: ±0.1%FS, maximum: ±0.2%FS/year
Comprehensive accuracy≤±0.25%FS, 0.5%FS
(Comprehensive accuracy includes: linearity + repeatability + hysteresis)
Overload pressure2 times full scale pressure
(100MPa product overpressure is 1.1 times full scale pressure)
Ambient temperature-20 … +85℃
Medium temperature-40 … +85℃, special can be -10℃~200℃
Vibration influence≤±0.01%FS (X, Y, Z axis, 200Hz/g)
Load Resistance≤(U-12)/0.02Ω
Natural frequency150KHz~2MHz
Transmitter frequency response0~1KHz~200KHz
Rise Time0~1mS~2μS
Zero temperature driftTypical: ±0.02%FS/℃, maximum: ±0.05%FS/℃
Sensitivity temperature drift±0.02%FS/℃, maximum: ±0.05%FS/℃
ResolutionInfinitely small in theory, usually 1/100000
MediumGas or liquid compatible with 316 stainless steel
Power supplyTransmitter power supply: 12~36VDC (generally 24VDC),
±15VDC switching power supply or linear power supply
Sensor power supply: constant current: 1mA~4mA;
constant voltage: 5VDC~24VDC
Signal outputAnalog: 4~20mA, 1~5 V DC, 0~10VDC, 0~5V DC
Sensor output: 1.5mV~15mV/V
Insulation resistance100MΩ, 500VDC
Electrical protectionReverse polarity protection, anti-electromagnetic interference
Liquid contact material316L stainless steel
shell material304 stainless steel
Process connectionM20*1.5, G1/4, flush film, other threads can be designed according to customer requirements
Electrical connectionThe cable is IP67 and the connector connection is IP65
weight0.25KG

You may like: How does a pressure transmitter work?

Applications of High Frequency Dynamic Pressure Sensor

  • Military engineering
  • Chemical explosion test
  • Petroleum prospecting and well testing
  • Fluid mechanics
  • Internal combustion engine system
  • aerodynamics
  • Scientific tests such as hydraulic power machinery test
  • Chemical explosion test

Read more about: What is industrial pressure transmitter?

More Featured Pressure Sensors

SI-303 Low-Pressure Transducer
Low pressure transducers for air and non-corrosive gases low pressure measurement. 0 ~ 2.5kPa to 0 ~ 30kPa measurable.
SI-350 Sanitary Pressure Transmitter
Sanitary Pressure Transmitter, also called tri clamp pressure transmitter,
is the pressure transducer with the flush diaphragm (flat membrane) as the pressure sensor.
SI-300 Pressure Transducer 4-20mA/Voltage
The 4-20mA/ Voltage Pressure Transducer,
also called pressure transmitter 4-20mA,
is a pressure sensor with4-20ma/Voltage output.
SI-390 Industrial Pressure Transmitter
Pressure transmitters for general industrial applicaitons. -0.1kPa ~ 0 ~ 0.01kPa ~ 100MPa ~150MPa. 0.1% FS, 0.25% FS, 0.5% FS. 4-20mA (2-wire system), 0-5 / 1-5 / 0-10V (3-wire system)
SI-512H High Temperature Pressure Sensor
High Temperature Pressure Sensor for pressure measurement of high temperature gas or liquid. Such as steam pressure. High temperature up to 800 ℃.

SIJC-1000HSM-Silicon Pressure Sensor
Silicon pressure sensor, also known as Diffused silicon pressure sensor. Silicon pressure sensors are low cost.
SI-706 Combined Pressure and Temperature Sensor-Dual function
Combined pressure and temperature sensor for Simultaneous measurement of pressure and temperature.
Thermocouple types: J, K, E type or PT100 platinum resistance. Two outputs do not affect each other. 
SI-338 Ceramic Pressure Sensor
Ceramic pressure sensor is a pressure sensor refined from a thick ceramic base using a refined ceramic base. Cost-effective. Support OEM processing. 0-0.2MPa -…- 40MPa

Extended reading: Static pressure vs dynamic pressure vs total pressure

More Solutions for pressure measurement

Extended Reading: Digital Pressure Sensor-RS485

Sino-Inst offers over 20 Pressure sensors. A wide variety of  Pressure sensors options are available to you. Such as free samples, paid samples. Sino-Instrument is a globally recognized manufacturer of Pressure sensors, located in China.

Sino-Inst  sells through a mature distribution network that reaches all 30 countries worldwide. Pressure sensors products are most popular in Europe, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers. With ISO9001, ISO14001 certification.

Level Measurement: Liquid Chlorine Storage Tanks

Monitoring the level of liquid chlorine storage tanks is a common problem in the chlor-alkali industry.

In the chlorine production process, sulfuric acid dehydration is used to dry the chlorine. There will be a small amount of acid mud in the liquid chlorine. Liquid chlorine is highly toxic and corrosive. Liquid chlorine storage tank level measurement must take into account the requirements of corrosion resistance, safety requirements, reliability, convenient installation and easy maintenance.

This article combines the application and comparison of the actual use of the liquid chlorine storage tank level measurement level gauge, which has practical guiding significance for the selection of the liquid chlorine storage tank level gauge in the chlor-alkali industry under the existing technical conditions.

Liquid Chlorine Storage Tanks chemical properties

Liquid chlorine is a yellow-green liquid. Boiling point -34.6℃. Melting point -103℃. It is vaporized into gas under normal pressure. Inhalation of the human body can be severely toxic, severely irritating and corrosive. It burns and explodes when mixed with other flammable gases in sunlight. Chlorine is a very reactive element and can react with most elements (or compounds).

Liquid chlorine is the basic chemical raw material, which can be used in metallurgy, textile, papermaking and other industries, and is the raw material for the synthesis of hydrochloric acid, polyvinyl chloride, plastics, and pesticides. Packed in high-pressure steel cylinders.

Hazard characteristics: Liquid chlorine will not burn, but it can support combustion. Generally combustible materials can be burned in chlorine gas, and general flammable gas or steam can also form explosive mixtures with chlorine gas.

Chlorine gas can react violently with many chemicals such as acetylene, turpentine, ether, ammonia, fuel gas, hydrocarbons, hydrogen, metal powder, etc. to explode or generate explosive substances. It is almost corrosive to metals and non-metals.

Liquid chlorine is generally used after gasification and has a wide range of uses. It is a strong oxidant. It is used for bleaching in the textile and paper industry, purification and disinfection of tap water, refining of magnesium and other metals, and production of pesticides, detergents, plastics, rubber, Various chlorine compounds such as medicine.

Liquid chlorine is a highly toxic substance, and the emergency code number is 31001. Should be stored in a cool, ventilated warehouse, special warehouse for special storage. Do not co-store or carpool transportation with combustibles, explosives and ammonia.

Level gauges types used for tank level measurement

In the tank level measurement, the following types of level gauges have a large number of practical applications:

1.Buoyancy level gauge

Such as float level gauge, flap level gauge, float level gauge, floating plate level gauge, float level gauge, steel belt level gauge. This type of buoyancy level gauge has measurement accuracy. However, the on-site installation and structure are more complicated, there are many mechanical parts, and the daily maintenance amount is very large in the actual application process.

2.Pressure type level gauge

Pressure transmitters, single-flange level transmitters, and drop-in level transmitters are often used for liquid level measurement in open vessels. Differential pressure transmitters and remote double-flange differential pressure transmitters are often used for liquid level measurement in closed vessels. Differential pressure level gauges are easily affected by medium density and temperature changes during measurement, and the maintenance of accessories is large. If the liquid level of a strong corrosive medium is measured, the instrument is expensive.

Extended reading: Hydrostatic Level Measurement

3.Microwave level meter

Ultrasonic level gauges, radar level gauges, and guided wave radar level gauges are all microwave level measuring instruments that can be used for solid and liquid level measurement. Although these level gauges have advanced technology and improved measurement accuracy, they are suitable for pressure vessels that store light hydrocarbons, liquid ammonia, and liquid chlorine.

Due to the low dielectric constant of the gas phase medium, volatility and a large number of droplets, it will absorb and affect the reflection of electromagnetic waves. Interference to the level measurement of the microwave level meter, resulting in unstable measurement value of the level meter.

Extended reading: What is the difference between ultrasonic and radar level transmitters?

Featured Level meters

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.

Application of different level gauges in Liquid Chlorine Storage Tanks

Practice is the only criterion for testing truth. Each level gauge has its advantages and disadvantages, and the application performance of different level gauges under the same working conditions is not the same.

In this article, Sino-Inst shares with you the application experience of different types of level gauges in the level measurement of liquid chlorine storage tanks in the plant.

1.Application of radioactive level gauge in Liquid Chlorine Storage Tanks

The cobalt 60 radioactive level gauge is used to perform high-limit measurement and alarm on the liquid level of the liquid chlorine storage tank.
The specific application is: installing cobalt 60 radiation sources and receiving devices on both sides of the high point of the liquid chlorine storage tank.

The radioactive level gauge produces different amounts of radiation when the storage tank is full or dissatisfied. The meter judges whether the liquid level of the storage tank exceeds the limit according to the change of the radiation amount and sends out the corresponding switch alarm signal.

The cobalt 60 radioactive level gauge is installed on the outside of the storage tank and does not come into contact with the liquid chlorine. There is no potential for chlorine leakage, and the position measurement is accurate and reliable. However, the radioactive level gauge cannot realize continuous measurement and monitoring of the liquid level and the cobalt 60 radioactive source is easy to check Instrument maintenance workers cause personal hazards and are therefore not suitable for production.

2.Application of top-mounted float level gauge in Liquid Chlorine Storage Tanks

The top-mounted float level gauge is used to measure the liquid level of the liquid chlorine storage tank. The top-mounted float level gauge is inserted into the liquid chlorine storage tank from the top.

When the liquid level in the liquid chlorine storage tank changes, the float floats up and down along the measuring tube with the change of the liquid level. The magnetic steel in the anti-corrosion float continuously attracts the reed switch relays in different positions. The liquid level is shown by the indicator position.

The top-mounted float level gauge works well in the initial stage of use. But with the passage of time, its drawbacks have gradually emerged. The top-mounted float level gauge needs to be in contact with liquid fluorine when measuring, and it is prone to fluorine gas leakage. Site environment It is highly corrosive, and the measuring rod of the reed switch relay is often desoldered due to corrosion. The failure rate is very high and the maintenance workload is large, which affects normal production.

The acid mud contained in the liquid chlorine adheres to the floating ball steel pipe. It causes the floating ball to move and even gets stuck, causing the level gauge float to not follow the liquid level change normally. A false liquid level is generated and the process production operation is affected. It is not fully applicable to liquid chlorine storage tank level measurement.

3.Application of capacitive level gauge in Liquid Chlorine Storage Tanks

Use a capacitive level meter to measure the level of the liquid chlorine storage tank. The capacitive level gauge is inserted from the top of the liquid chlorine storage tank, and the capacitance of the level gauge changes in proportion to the change height of the liquid chlorine level in the storage tank. This principle is used to achieve continuous measurement of the liquid chlorine storage tank level.

Capacitance level meter can meet the continuous measurement of liquid chlorine storage tank level, but it has the following disadvantages:

The measuring electrode of the capacitance level meter needs to be inserted into the liquid chlorine storage tank, and chlorine leakage is likely to occur during installation or disassembly, which endangers personal safety.

After the capacitance level gauge has been working for a period of time, the acid mud contained in the liquid chlorine will adhere to the inner and outer electrodes of the capacitance level gauge, causing changes in capacitance and large errors in measurement.

Due to the high toxicity of chlorine gas, the malfunctioning meter cannot be disassembled and repaired at any time, causing the malfunction meter to be unable to be repaired for a long time.

Due to the above reasons, the capacitance level meter is gradually eliminated after a period of use.

4.Application of side-mounted magnetic flap level gauge in liquid chlorine storage tanks

The side-mounted magnetic flap level gauge is connected to the storage tank with a measuring tube. The measuring tube is equipped with a magnetic float. The outside of the tube is composed of two-color porcelain rollers side by side to form an indicator. The magnetic float moves up and down with the change of the liquid chlorine level, driving the magnetic roller Rotate. The magnetic roller therefore changes color to indicate the liquid level.

The side-mounted magnetic flap level gauge has a good effect in the initial stage of use. Because the indicator is completely isolated from the medium, the effect of corrosion is overcome.

The magnetic float is sealed in the measuring tube to eliminate the hidden danger of chlorine leakage and ensure safety.

The side-mounted magnetic flap level gauge is accurate and reliable in measurement and indication, with very low failure rate and little impact on production.

The disadvantage is that the measuring tube wall is frozen, and the acid sludge contained in the liquid chlorine will also cause the magnetic float to freeze or jam when working for a long time. This will cause measurement errors. It will seriously affect the process and production operations. Therefore, the liquid chlorine storage tank level cannot be fully applied measuring.

5.The application of external level gauge in Liquid Chlorine Storage Tanks

A. Working principle of external level gauge

The external measuring level gauge is an intelligent field transmitter type instrument. The external measuring level gauge flameproof host is installed near the liquid chlorine storage tank. The measuring head of the external measuring level gauge is tightly attached to the outer wall of the container. It depends on the detection container wall The tiny mechanical vibration on the upper side becomes an electric signal and is transmitted to the external measuring level gauge flameproof host. After this signal is processed, it becomes a digital signal and is sent to the CPU.

The instrument host filters and recognizes the various vibration waves of different modes obtained by the measuring head, and removes signals that have nothing to do with the change of the liquid level. It uses special software to perform complex calculations on the waveform of the signal, and uses artificial intelligence algorithms to calculate it. Analysis. To calculate the liquid level.

Therefore, the external level gauge is to continuously and accurately measure the height of the liquid level in the tank from the outside of the tank. It does not touch the liquid and gas in the tank at all, realizing a true isolation measurement.

B. Advantages of external level gauge

The external level gauge has the following advantages:

①It can be used in the most demanding environment. It can measure liquids under any pressure. It can measure the most toxic liquids. It can measure the most corrosive liquids. It can measure absolutely sterile or extremely pure liquids.

②Safe to use. When measuring toxic, corrosive, pressure, flammable, explosive, volatile, and easy to leak liquids. Because the measuring head and the instrument are outside the container. During installation, repair, and maintenance operations, the operator does not touch the tank The liquid and gas inside are very safe. Even if the instrument is damaged or repaired, there will never be leakage.

③Meet environmental protection requirements. Neither liquid nor gas leaks. It does not pollute the environment and is a green instrument.

④ Installation and maintenance are the most convenient and economical. Because the liquid level gauge does not need to open a hole in the container, does not need a flange, or a connecting pipe, it is very convenient to install and maintain. The external level measuring instrument does not require manual calibration during installation and use, which is very convenient.

⑤High reliability and long service life. Because there are no mechanical moving parts in the measuring head of the liquid level meter and the meter, it is strictly sealed and isolated from the outside world. It will not produce abrasion or corrosion, it is very durable and reliable, and the maintenance workload is very small.

⑥ Accurate measurement. The external level measuring instrument can be continuously and automatically calibrated to ensure the highest measurement accuracy. In addition, the external level measuring instrument is divided into temperature compensation type, its measurement accuracy reaches 1%. Self-calibration type, its measurement accuracy reaches 0.2%. Among them, the self-calibrating liquid level gauge does not need manual calibration.

C. Disadvantages of external measuring liquid level gauge

① There are still some shortcomings of the external measurement type level gauge. The meter itself has a measurement dead zone. The external measurement type level gauge can only display a low level alarm within 200mm of the bottom of the container and cannot indicate an accurate level value. Since the company’s liquid chlorine storage tank level measurement monitoring is mainly to ensure high-level accurate monitoring, this defect does not affect normal use.

After analysis and comparison, it is believed that from the perspective of safe production and maintenance work, the external measurement type level gauge is currently the most suitable instrument for liquid chlorine storage tank level measurement.

②The advantage of the external measurement type level gauge is that it is easy to install, and there will be no hidden dangers of chlorine leakage and corrosion of the instrument.

According to reports from other petrochemical plants: the external measurement type level gauge will also have measurement failures after a period of time, mainly due to changes in the paste medium and gap, which is a common problem. This is also a problem that the tuning fork limit switch can avoid.

Therefore, the biggest obstacle to the application of external ultrasonic level meters is the need to achieve long-term all-weather operation after installation, which is a technical problem.
In addition, for instruments that have problems on site, the supplier must respond to and solve the problems in a timely manner. This is a service problem.

Featured external level gauges in Liquid Chlorine Storage Tanks

HS-2000 External Mounted Ultrasonic Tank Level Sensor- (referred to as “external level gauge”). It adopts advanced signal processing technology and high-speed signal processing chip. It breaks through the influence of container wall thickness. Realizes the height of the liquid level in the closed container True non-contact measurement.

The ultrasonic liquid level sensor (probe) is installed directly under the outer wall (bottom) of the container under test. Calibrate the outer wall of the probe. There is no need to open holes for the container to be tested, easy to install, and does not affect production. It can accurately measure the level of various toxic substances, strong acids, strong alkalis and various pure liquids in high-pressure airtight containers.

The HS-2000 External Mounted Ultrasonic Tank Level Sensor has no special requirements for the material of the liquid medium and the container. The explosion-proof design is adopted to meet the explosion-proof requirements.

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Sino-Inst offers over 20 Liquid Level gauges for level measurement. About 50% of these are fuel level meters, 40% is the tank level sensor.

A wide variety of Liquid 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 Ultrasonic Tank Level measurement instrumentation, located in China.