Differential Pressure Flow Meters

Posted on September 23, 2020 by KimGuo11

Differential Pressure Flow Meter is also called DP flow meter. Differential pressure flow meters use the principle of differential pressure to measure the flow of liquid, gas and steam.

The differential pressure flow meter is measured by the working principle that there is a certain relationship between the pressure difference and the flow rate when the medium fluid flows through the throttling device. Differential pressure (DP) flow meters are the most widely used form of flow measurement products today. Including: integrated orifice flowmeter, average velocity tube flowmeter, venturi tube, wedge flowmeter, underwater flowmeter, orifice plate, orifice carrier assembly, nozzle flowmeter.

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

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More Flow Meters

Featured Differential Pressure Flow Meters

**Rotameter flow meter-Variable Area Flow Meters**

Differential Pressure Flow Meters Applications

DP flow meter applicable fluid

Clean gas
/liquid

Dirty gas
/liquid

Corrosive
liquid

Viscous
liquid

Abrasive
slurry

Fiber-containing
slurry

Low flow
rate fluid

Steam
(gas)

High
temperature fluid

Cryogenic
fluid

Not full
of pipe

Non-newtonian
fluid

Open
channel

V cone

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◎

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╳

Orifice

○

◎

○

◎

╳

○

╳

○

╳

Venturi tube

○

√

◎

○

◎

╳

◎

╳

nozzle

○

◎

○

◎

╳

◎

╳

Uniform tube

○

◎

√

◎

╳

◎

○

◎

╳

Elbow

○

√

◎

√

╳

◎

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◎

╳

◎

╳

○: Design first choice ◎: Available under certain conditions √ ：Usually available ╳: Not applicable

Extended Reading: Differential Pressure (DP) Flow Meters Technology

Differential pressure flow meter advantages and disadvantages

Advantages of differential pressure flowmeter

Wide range of applications. There is no other type of flowmeter comparable to a differential pressure flowmeter.
The orifice plate is the most widely used differential pressure flow meter. It has a firm structure, stable and reliable performance and long service life.
The detection parts, differential pressure transmitter, and flow totalizer can be produced by different manufacturers. It is convenient for scale economic production

Disadvantages of differential pressure flowmeter

The measurement accuracy of differential pressure flow meters is generally low.
The range is narrow, generally only 3:1-4:1
Different pressure flow meters require high on-site installation conditions.
The pressure loss of orifice plate and nozzle is large.

Differential pressure flow meter working principle

When the fluid flows through the throttle, the fluid will be accelerated due to the fluid being compressed.

As the velocity of the fluid increases, the kinetic energy of the fluid will increase accordingly.

According to the law of conservation of energy, we know that the static pressure of the fluid being accelerated will reduce the corresponding value.

As the picture shows:

The cross-sectional area of the pipe at cross-section 1 is A1. The average flow velocity of the fluid when flowing through the cross section A1 is V1. Its density is ρ1.

When the fluid flows through cross section 2. The average flow rate of the fluid becomes V2. The density is ρ2. The cross-sectional area is A2.

According to the principle of fluid flow continuity, there is the following relationship: V1×A1×ρ1=V2×A2×ρ2.

If the fluid is a liquid, the density of the fluid before and after compression is generally considered constant. That is, ρ1=ρ2=ρ.

Therefore, the volumetric flow rate of the liquid: qv=V1×A1=V2×A2 ——–Formula①

According to the Bernoulli equation (i.e. the law of conservation of energy), Z1=Z2 on a horizontal pipe, then the following relationship is given:
—————Formula②

Applying the Bernoulli equation and the principle of flow continuity, there are the following relations on the two cross sections:

——————Formula ③

From formula ①, we get: V1=A2/A1×V2; put formula ① and formula ② into formula ③ to get:

———————Formula④

In the above formula: A1=(πD2)/4, A2=(πd2)/4, according to the definition of the diameter ratio according to the diameter ratio β: β=d/D. From formula ①, we can get: V2=qv/A2

Therefore: The theoretical flow formula can be derived from this:

————————–Formula ⑤

Also defined by the outflow coefficient C is: C=actual flow/theoretical flow,
Finally, the calculation formula of differential pressure flowmeter can be obtained:

–————————-Formula ⑥;

The expansibility coefficient of ε measured medium in formula ⑥, generally speaking ε=1 for liquid.

It can compress fluid ε<1 for gas, steam, etc.
qv is the volume flow of the fluid, unit: m3/s).
ρ1 is the density of the fluid upstream of the throttle (front) under working conditions, in kg/m3.
d is the equivalent opening diameter of the throttle under working conditions, unit: m.
△P is differential pressure, △P=P1-P2, unit: Pa.

Extended reading: Gas Rotameter Tips

Differential pressure flowmeter selection

The selection of differential pressure flowmeter should consider the following aspects:

1.Accuracy, repeatability, linearity, flow range and range

The standard parts of the differential pressure flowmeter have a strict range of use. These parameters include pipe diameter ratio, Reynolds coefficient, pipe wall thickness and other parameters.

Therefore, these series of parameters should be selected reasonably in actual selection and application. In addition, the accuracy of the differential pressure flowmeter depends to a large extent on the conditions of use on site, and generally depends on the conditions of the fluid.

2.Fluid characteristics

The characteristics of the fluid refer to the fluid’s medium conditions such as density, dynamic viscosity, pressure, temperature, corrosivity, abrasion, fouling, and dirt.
Therefore, the selection is a differential pressure flowmeter that should be reasonably selected according to the physical characteristics of the fluid medium on site. If you do not understand the physical characteristics of the fluid on site, you should actively use the instrument to measure these physical parameters.

3.Economic factors

Should consider the purchase cost of differential pressure flowmeter. Installation costs and after installation. Later maintenance costs. Calibration fee. The later operating cost of the larger diameter differential pressure flowmeter is a relatively large expense. Therefore, the proper caliber differential pressure flowmeter should be selected when selecting the model.

4.Pressure loss

Large pressure loss is one of the main disadvantages of differential pressure flow meters. Orifice plates and nozzles in various throttling devices are throttling parts with large pressure loss. At the same flow rate and β value, the pressure loss of the nozzle is only 30%-50% of the pressure loss of the orifice, which means that the nozzle has a lower pressure loss.

Various flow tubes (Venturi tube, Dole tube, Rollos tube, general Venturi tube, etc.) are throttling devices with low pressure loss. Their pressure loss is only 20% of the orifice plate, even as low as 5%-10%. The development and application of these throttling devices is a direction for future efforts.

Differential pressure flow meters are one of the most widely used types of flow meters. Sino-Inst analyzed the working principle and selection of differential pressure flow meters. It provides a certain theoretical reference basis for the selection and use of differential pressure flow meters in the future.

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Sino-Inst, Manufacuturer for differential pressure flow meters. Including Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas and steam flow measurement.

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

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Differential Pressure Transmitter Installation Guide

Posted on September 22, 2020 by KimGuo11

Differential pressure transmitter installation guide helps you solve the installation problem of DP Transmitters.

Differential pressure transmitter is widely used in industrial differential pressure, liquid level, flow measurement. DP transmitters are often used with capillaries, orifices, 3 way manifolds, etc. 　After purchasing the smart differential pressure transmitter, the most concern is installation and debugging. Sino-Inst will share the Differential Pressure Transmitter Installation Guide with you below.

Sino-Inst offers a variety of differential pressure transmitters for pressure/level/flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote

DP transmitters

Featured DP Transmitters

**Piezoresistive Differential Pressure Transmitter**
Piezoresistive Differential Pressure Transmitter utilizes the piezoresistive effect of semiconductor silicon materials. Realize accurate measurement of differential pressure.

**Smart Differential Pressure Transmitter**
Smart Differential Pressure Transmitter measures industrial differential pressure. Can Works with diaphragm seals, capillary, HART. Outputs standard signals (such as 4 ~ 20mA, 0 ~ 5V).

**Flange Mounted Differential Pressure Transmitter**
**Flange** Mounted Differential Pressure Transmitter is also called single flange DP level transmitter. For liquid, gas or vapor pressure measurement.

**Extended Diaphragm Seal DP Level Transmitter**
Extended Diaphragm Seal DP Transmitter is a level transmitter direct mounted on pipe or tank. The isolation diaphragm is in direct contact with the liquid medium.

**Remote Seal Differential Pressure Transmitter**
Remote Seal DP Transmitter is often used as a tank level transmitter. The smart pressure transmitter is connected with a stainless steel flange by capillary. The pressure is sensed by a remote transmission device installed on a pipe or container.

**Differential pressure(DP) level transmitter**
Differential pressure (DP) level transmitter is a perfect solution for tank level measurement. Flanges, seal diaphragms, capillaries, and DP transmitter are often used to measure liquid levels.

Working principle of differential pressure transmitter:

The two pressures of the measured medium of the pressure transmitter pass into the high and low pressure chambers. Act on the isolation diaphragm on both sides of the delta element (ie the sensitive element). The filling liquid in the spacer and the element is transferred to both sides of the measuring diaphragm. The electrodes on the measuring diaphragm and the insulating plates on both sides each form a capacitor.

When the pressures on both sides are inconsistent, the measurement diaphragm will be displaced. The displacement is proportional to the pressure difference. Therefore, the capacitance on both sides is not equal. Through the oscillation and demodulation link, it is converted into a signal proportional to the pressure. The working principle of pressure transmitter and absolute pressure transmitter is the same as that of differential pressure transmitter. The difference is that the low pressure chamber pressure is atmospheric pressure or vacuum.

The A/D converter converts the current of the demodulator into a digital signal, whose value is used by the microprocessor to determine the input pressure value. The microprocessor controls the work of the transmitter. In addition, it performs sensor linearization. Reset the measurement range. Engineering unit conversion, damping, square extraction, sensor fine-tuning and other operations, as well as diagnosis and digital communication.

The D/A converter fine-tunes the data with the corrected digital signal from the microprocessor. These data can be modified by the transmitter software. The data is stored in the EEPROM, even if the power is off, it is kept intact.
The digital communication line provides a connection interface for the transmitter and external equipment. This circuit detects the digital signal superimposed on the 4-20mA signal and transmits the required information through the loop.

For more about the working principle of differential pressure transmitter, please refer to “Differential Pressure Transmitters”.

Installation method of differential pressure transmitter:

Direct pipeline installation. This installation method is simple and uses less materials.
Flange installation. Mainly used in liquid level measurement. Use the static pressure of the liquid to measure the liquid level.
Bracket installation (tube-mounted flat bracket). This type of installation is mostly adopted, which is convenient for installation and maintenance. In the past, the instrument box was used in the open air to protect the intelligent differential pressure transmitter from dust and rain. But the protection of the current smart differential pressure transmitter is very good. The protection grade is IP65, the working environment temperature is -40～+75℃, vibration resistance, dustproof, rainproof, maintenance-free for 5 years.

Extended reading: Smart Differential Pressure Transmitter

Differential Pressure Transmitter Installation Guide

Initial state: all valves are in the closed position

Open the two primary doors on the positive and negative pressure side
Open the balance valve
Wait for the steam in the pressure line and the condensate container to condense
Open the secondary door on the positive pressure side and the drain screw of the positive measurement chamber until the condensate without air is discharged
Close the drain screw of the positive measurement chamber
Turn on the drain screw of the negative measurement chamber until the condensate without air is discharged
Close the secondary door on the positive pressure side
Open the secondary door on the negative pressure side until the condensate that does not contain air is discharged from the drain screw of the negative measurement chamber
Close the drain screw of the negative measurement chamber
Close the negative secondary door
Open the secondary door on the positive pressure side again
Check for leakage and check the zero point of the instrument
Close the balance gate
Fully open the secondary door on the positive and negative pressure side.

**Extended Reading: Advantages and disadvantages of differential pressure flow meter**

Reason: drain the pipeline and the air in the measurement room to reduce errors
Protect the transmitter so that the differential pressure on the positive and negative pressure sides is appropriate.
The input should be to open the positive pressure side first (slowly), then close the balance door, then open the negative pressure side, and finally ensure that the positive and negative sides are fully open and the balance door is closed.

Because if you open both the positive and negative sides, the pressure on the positive side is greater than the negative side, because the balance door is open at that time. In that way, the condensate on the positive pressure side will flow back into the negative pressure pipe, and the pipe will have steam and generate heat, which will damage the transmitter.

Operating Regulations of Differential Pressure Transmitter

The range adjustment and check accuracy of the differential pressure transmitter should be carried out behind the indoor panel using a handheld communicator, and must not be operated on site with power.
After adjusting the range, the differential pressure transmitter should be calibrated. The process is as follows:
Open the balance valve, first close the low-pressure side inlet valve, then close the high-pressure side inlet valve, and open the high-low pressure side exhaust valve. At this time, the computer displays zero.
Correctly connect the process tester, differential pressure module, and hand-operated pump to the exhaust hole of the high-pressure end, and close the balance valve.
Adjust the pressure to half of the range and full range respectively. At the same time, observe whether the data change at this point is consistent with the range on the indoor computer.
Remove the calibration instrument, close the exhaust hole, open the balance valve, open the high-pressure side inlet valve, open the low-pressure side inlet valve, and slowly close the balance valve.
If the differential pressure transmitter must be disassembled, the following requirements should be strictly followed.
Turn off the power of the differential pressure transmitter and confirm that it is correct.
Open the balance valve, first close the low pressure side inlet valve, then close the high pressure side inlet valve, and open the high and low pressure side exhaust valve.
Close the intake valve on the orifice side.
Open the differential pressure transmitter wiring terminal, remove the meter wiring, write down the wiring sequence, and pull out the meter wiring.
Remove the transmitter.
Wrap the plastic bag of the pressure tapping hole tube with the head of the explosion-proof hose facing down to prevent water from entering.

In short, I hope everyone will take a look at the installation diagram of the smart differential pressure transmitter before putting it into operation. This way, I know it. The Differential Pressure Transmitter Installation Guide introduced in this article is suitable for smart differential pressure transmitters produced in China. The same applies to brands such as Rosemount.

If you have any questions about differential pressure transmitters, please contact our sales engineers.

Extended reading: How to calibrate HART pressure transmitters

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B-F Flare Gas Ultrasonic Flow Meter

Posted on September 22, 2020 by KimGuo11

B-F flare gas ultrasonic flowmeter adopts all-metal ultrasonic transducer. It is suitable for measurement in a variety of harsh environments. The turndown ratio is large. It can measure hydrocarbon gas, exhaust gas and other gas containing impurities and humidity.

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

Request a Quote

Ultrasonic Gas Flow Meters

Features of B-F Flare Gas Ultrasonic Flow Meter

Large turndown ratio and wide flow velocity measurement range;
Suitable for multi-component metering. The gas flow meter is not affected by changes in composition.
Suitable for gas flow measurement with rapid changes in composition.
Measuring velocity and volume flow;
It can measure pulsating flow and can measure in both directions;
Measuring hydrocarbon gas;
Suitable for gas containing impurities, damp and dirty, corrosion resistance.
No routine maintenance is required.
It can be installed and maintained online.

Wide range ratio, wide applicable flow range. Can detect small leaks.
The gas flow rate in the flare system is complex and changeable, and the gas composition is often a mixture of multiple different gas sources. The measured fluid has the characteristics of complex and changeable composition, obvious pressure and temperature fluctuation, and wide flow range. Using B-F to measure this type of fluid is excellent.
The B-F flowmeter has no moving parts. The probe is made of all metal material. Can withstand the corrosive environment of flare gas. Stable and durable. Low maintenance.

B-F Ultrasonic Gas Flow Meter Technical specifications

Technical specifications
Parameter category	Specifications
structure type	Plug-in, direct type
Applicable caliber	DN50-DN5000
Number of channels	Mono
Flow rate range	0.03-60m/s (higher range needs to be customized)
level of accuracy	2-5%, flow velocity 0.3-60m/s
Resolution	0.001m/s
Turndown ratio	2000:1
Work pressure	0-1.6MPa (Higher pressure is optional. The default gauge pressure sensor, if you need an absolute pressure sensor, you need to customize)
Measuring direction	One-way measurement (two-way need to be customized)
Measuring medium	Hydrocarbon, natural gas, coal gas and other media containing water and impurities
Measurement requirements
Medium temperature	-20℃~60℃ (Limit temperature -40℃~85℃)
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	≤3W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Ex d mb IIC T5 Gb,
Protection level	IP65

B-F Ultrasonic Gas Flow Meter Installation

More Features Gas Flow Meters

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

KimGuo11

drurylandetheatre.com

B-D Pipe Segment Ultrasonic Gas Flow Meter

Posted on September 22, 2020 by KimGuo11

B-D Ultrasonic Gas Flow Meter is a pipe section flowmeter. Use mono mode. The sound channel design of the ultrasonic transducer takes into account the requirements of various working conditions. Match the rectifier of corresponding caliber. It can be used for high-precision measurement of pipe sections smaller than DN200.

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

Request a Quote

Ultrasonic Gas Flow Meters

Features of B-D Ultrasonic Gas Flow Meter

Overall explosion-proof design;
No moving parts, no pressure loss, reducing use and maintenance costs;
The starting flow rate is small. Suitable for measuring low-speed flow;
Large turndown ratio, turndown ratio 1:125, measuring flow rate from 0.2-25m/s;
The metering is not affected by the composition. Suitable for measuring multi-component gases or gases with changes in composition;
The influence of dust and moisture is small. Dirty gases such as coal gas and flue gas can be measured;
Proprietary algorithm, which can adapt to the measurement occasions with rapid changes in components, rapid changes in temperature, pressure, and humidity;
Can measure pulsating flow and bidirectional flow;

Unique operating software design combines waveform debugging and parameter setting. Convenient on-site operation and maintenance;
Unique maintenance alarm can realize early warning of maintenance time. Provide product stability.
The all-metal ultrasonic transducer has strong anti-interference ability, dirt resistance and long service life.

B-D Ultrasonic Gas Flow Meter Applications

It is suitable for the measurement of alkanes such as natural gas, coal bed methane, mine gas, liquefied petroleum gas, methane, ethane, propane, butane, etc.;
It is suitable for the measurement of gas such as biogas, biological fermentation gas (water-containing impurities), and biomass fuel gas;
Suitable for the measurement of air, oxygen, nitrogen, argon, helium, nitrogen, and other non-corrosive gases;
It is suitable for the measurement of flare gas, tail gas, landfill gas, and water treatment aeration;
It is suitable for the measurement of helium, ammonia, acetylene, and other gases;

💡Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement

B-D Ultrasonic Gas Flow Meter Technical specifications

Technical specifications
Parameter category	Specifications
structure type	Direct type
Applicable caliber	DN50-DN200 (other calibers can be customized)
Number of channels	Mono
Flow rate range	0-25m/s
level of accuracy	1.5%, 1.0%
Resolution	0.001m/s
Flow cutoff point	Qt=0.1 Qmax
Repeatability	Class 1.0: Qt-Qmax 0.2%; Qmin-Qt0.4%
Work pressure	Class 1.5: Qt- Qmax 0.3%; Qmin-Qt 0.6%
Measuring direction	0-1.6MPa (Higher pressure is optional. The default gauge pressure sensor, if you need an absolute pressure sensor, you need to customize)
Measuring medium	Single way measurement (two-way need to be customized)
Measurement requirements
Medium temperature	-20℃~60℃ (Limit temperature -40℃~85℃）
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	≤3W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Ex d mb IIC T5 Gb,
Protection level	IP65

B-D Ultrasonic Gas Flow Meter Flow Range

Nominal diameter		Turndown ratio	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）
50	2”	1:80	160	2
80	3”	1:80	400	5
100	4”	1:80	640	8
150	6”	1:80	1300	18
200	8”	1:80	2200	30

Nominal diameter		Turndown ratio	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）
50	2”	1:150	212	1.4
80	3”	1:125	450	3.6
100	4”	1:125	640	5.0
150	6”	1:125	1600	13
200	8”	1:100	2260	23

B-D Ultrasonic Gas Flow Meter Straight pipe requirements

a) When there is no rectifier. It is recommended that the length of the front straight pipe is greater than 10D. The length of the rear straight pipe is greater than 5D.

b) With a rectifier. It is recommended that the length of the front straight pipe section is greater than 5D. The length of the rear straight pipe section is greater than 3D.

c) When there are noise sources such as pressure regulating valves on site. A noise reduction pipe section should be installed between the flowmeter and the noise source.

Precession Vortex Gas Flowmeter, like vortex flowmeter, is a velocity flowmeter. The cost performance of the intelligent precession vortex flowmeter is higher than vortex flowmeter. The intelligent precession vortex flowmeter can only measure gas. Precession Vortex Gas Flowmeter can be made into an integrated temperature and pressure compensation. And can measure various gases. Such as compressed air, oxygen, biogas, natural gas, coal gas, etc.

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

KimGuo11

drurylandetheatre.com

Ultrasonic Gas Flow Meter – B series

Posted on September 22, 2020 by KimGuo11

The B series Ultrasonic Gas Flow Meter adopts the principle of ultrasonic time difference.

Ultrasonic Gas Flow Meter uses the superposition relationship between the propagation velocity of the ultrasonic signal in the fluid and the fluid velocity for measurement. Ultrasonic Gas Flow Meter-B series is mainly for gases with a single composition such as oxygen, nitrogen, argon, helium, etc. There are also gases such as flare gas and natural gas. The price/performance ratio is very high.

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

Request a Quote

Ultrasonic Gas Flow Meters

Features of Ultrasonic Gas Flow Meter – B series

Wide measuring range, 1:150
1% higher measurement accuracy
Two-way metering
No pressure loss
No start flow
Maintenance-free, less maintenance
Intelligent integration

Ultrasonic Gas Flow Meter – B series Model

Code	Content	Meaning
1	D: Short connection F: Torch gas plug-in installation	Application scenarios and installation methods
2	S：Single Channel	Number of channels
3	DN50 DN80 DN100 DN150…..DN5000	caliber
4	A: Helium, nitrogen, neon, argon, air and other non-corrosive gases; B: Coalbed methane, natural gas, oil and gas, ethanol boil-off gas, methane, ethane, propane, other alkanes and olefin gases. C: Gases such as flue gas, flare gas, exhaust gas, tail gas, exhaust gas, etc. D: Blast furnace gas, converter gas, coke oven gas, carbon monoxide, mine gas and other gases. E: Biogas, fermentation gas, biomass gas, landfill gas and other gases.	Application field

Example: B-FS600C represents B flare gas flow meter. Measuring pipe section DN600. Measuring C gas.

According to the application scenario. B series gas ultrasonic flow meters are divided into B-D type and B-F type.

**B-D Pipe Segment Ultrasonic Gas Flow Meter**

Rectifier

The Z series rectifier can effectively improve the upstream and downstream measurement conditions of the gas ultrasonic flowmeter. Improve the accuracy of the measurement structure. The Z series rectifier adopts a tube segment honeycomb rectifier. It is connected with the flow meter and the pipe section through a flange. The rectifier plate is made of stainless steel. The meter head is made of stainless steel or cast steel.

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Influence of rectifier on straight pipe section

Installation situation	Straight pipe requirements
With rectifier	Front straight pipe ≥5D, rear straight pipe ≥3D
Without rectifier	Front straight pipe ≥10D, rear straight pipe ≥5D

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

KimGuo11

drurylandetheatre.com

A-J same side plug-in Ultrasonic Gas Flow Meter

Posted on September 22, 2020 by KimGuo11

A-J is a plug-in gas ultrasonic flowmeter on the same side. Use single or dual channel mode. The sound channel design of the ultrasonic transducer takes into account the requirements of various working conditions. It is suitable for measurement in a variety of harsh environments. Suitable for low flow rate measurement. Suitable for low-frequency pulsating flow measurement.

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

Request a Quote

Ultrasonic Gas Flow Meters

A-J Ultrasonic Gas Flow Meter Applications

Gas (coke oven gas, blast furnace gas, converter gas, producer gas, blue coal gas) and other gases measurement;
Gas measurement of biogas, bio-fermentation gas, biomass gas, landfill gas, aeration of water treatment plants, etc.;
Measurement of exhaust gases such as flare gas, flue gas, exhaust gas, exhaust gas, tail gas, etc.;
Measurement of non-corrosive gases such as air, oxygen, nitrogen, argon, helium, etc.;
Metering of chemical gases such as ammonia;

A-J Ultrasonic Gas Flow Meter Flow Range

Nominal diameter		Turndown ratio	Starting flow	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）	（m³/h）
1300	50”	60:1	950	144000	2400
1400	54”	60:1	1100	166200	2770
1600	62”	60:1	1450	217200	3620
1800	72”	60:1	1850	274800	4580
2000	80”	60:1	2250	339000	5650
2200	88”	60:1	2750	411000	6850
2400	96”	60:1	3250	489000	8150
2600	104”	60:1	3800	573000	9550
2800	112”	60:1	4450	666000	11100
3000	120”	60:1	5050	762000	12700
3200	128”	60:1	5800	870000	14500
3400	136”	60:1	6500	981000	16350
3600	144”	60:1	7300	1098000	18300
3800	152”	60:1	8150	1230000	20500
4000	160”	60:1	9050	1356000	22600
4200	168”	60:1	10000	1500000	25000
4400	176”	60:1	11000	1641000	27350
4600	184”	60:1	12000	1794000	29900
4800	192”	60:1	13000	1950000	32500
5000	200”	60:1	14150	2121000	35350

A-J Ultrasonic Gas Flow Meter Technical specifications

Technical specifications
Parameter category	Specifications
structure type	Direct type
Applicable caliber	＞DN1200
Number of channels	Single channel, dual channel
Flow rate range	0.5-30m/s
level of accuracy	1.5% for single channel, 1.0% for dual channel
Resolution	0.001m/s
Work pressure	0-1.0MPa (default gauge pressure sensor, if you need absolute pressure sensor, you need to customize)
Measuring direction	One-way or two-way measurement
Measurement requirements
Medium temperature	-20℃~60℃(Limit temperature -40℃~85℃)
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	Starting current should be ≥ 2A, steady state operating power ＜15W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Flowmeter host Ex d IIB T5 Gb, transducer Ex mb IIC T5 Gb
Protection level	IP65

A-J Ultrasonic Gas Flow Meter installation location

Installation location	Installation description
C	Vertical installation, it is recommended to install in this position. Long maintenance period and low maintenance
B、D	Suitable for general conditions with water and dust, the maintenance period is shorter than that of C
A、E	It is suitable for general conditions with water and dust, and the maintenance period is shorter than that of positions C, B, and D

The vortex flowmeter is a volume flowmeter that measures the volume flow of gas, steam or liquid, the volume flow of standard conditions or the mass flow of gas, steam or liquid based on the Karman vortex principle. When the fluid flows through the dust collector rod of the vortex flowmeter, a vortex is formed. The frequency of vortex shedding is proportional to the fluid velocity. Temperature and pressure compensation can be configured.

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

KimGuo11

drurylandetheatre.com

A-C Plug-in Ultrasonic Gas Flow Meter on both sides

Posted on September 22, 2020 by KimGuo11

A-C Plug-in gas ultrasonic flowmeters on both sides, using single or dual channel mode. The sound channel design of the ultrasonic transducer takes into account the requirements of various working conditions. It is suitable for measurement in a variety of harsh environments. Suitable for low flow rate measurement. Suitable for low-frequency pulsating flow measurement.

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

Request a Quote

Ultrasonic Gas Flow Meters

A-C Ultrasonic Gas Flow Meter application

Gas (coke oven gas, blast furnace gas, converter gas) and other gases measurement;
Gas measurement of biogas, bio-fermentation gas, biomass gas, landfill gas, aeration of water treatment plants, etc.;
Measurement of exhaust gases such as flare gas, flue gas, exhaust gas, exhaust gas, tail gas, etc.;
Measurement of non-corrosive gases such as air, oxygen, nitrogen, argon, helium, etc.;
Metering of chemical gases such as ammonia;

A-C Ultrasonic Gas Flow Meter Flow Range

Nominal diameter		Turndown ratio	Starting flow	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）	（m³/h）
250	10”	60:1	35	5400	90
300	12”	60:1	51	7500	125
350	14”	60:1	70	10500	175
400	16”	60:1	90	13500	225
500	20”	60:1	140	21000	350
600	24”	60:1	200	30000	500
700	28”	60:1	280	41400	690
800	32”	60:1	360	54000	900
900	36”	60:1	450	69000	1150
1000	40”	60:1	565	84000	1400
1100	44”	60:1	685	102000	1700
1200	48”	60:1	815	123000	2050

A-C Ultrasonic Gas Flow Meter Technical specifications

Technical parameter
Parameter category	Specifications
structure type	Direct type
Applicable caliber	DN250-DN1200 (other calibers can be customized)
Number of channels	Single channel, dual channel
Flow rate range	0.5-30m/s
level of accuracy	1.5% for single channel, 1.0% for dual channel
Resolution	0.001m/s
Work pressure	0-1.0MPa (default gauge pressure sensor, if you need absolute pressure sensor, you need to customize)
Measuring direction	One-way or two-way measurement
Measurement requirements
Medium temperature	-20℃~60℃ (Limit temperature -40℃~85℃)
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	Starting current should be ≥ 2A, steady state operating power ＜15W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Flowmeter host Ex d IIB T5 Gb, transducer Ex mb IIC T5 Gb
Protection level	IP65

A-C Ultrasonic Gas Flow Meter installation location

Installation location	Installation description
A	Horizontal installation, it is recommended to install according to this position, the maintenance period is long, and the maintenance amount is small
B、C	Suitable for general conditions with water and dust, the maintenance period is shorter than that of A position

The gas turbine flowmeter integrates temperature, pressure, flow sensors and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen and other gases measurement.

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

KimGuo11

drurylandetheatre.com

A-S single rod plug-in Ultrasonic Gas Flow Meter

Posted on September 22, 2020 by KimGuo11

A-S is a single-pole plug-in Ultrasonic Gas Flow Meter. Use single or dual channel mode. The sound channel design of the ultrasonic transducer takes into account the requirements of various working conditions. It is suitable for measurement in a variety of harsh environments. Suitable for low flow rate measurement. Suitable for low-frequency pulsating flow measurement.

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

Request a Quote

Ultrasonic Gas Flow Meters

A-S Ultrasonic Gas Flow Meter application

Gas (coke oven gas, blast furnace gas, converter gas) and other gases measurement;
Gas measurement of biogas, bio-fermentation gas, biomass gas, landfill gas, aeration of water treatment plants, etc.;
Measurement of exhaust gases such as flare gas, flue gas, exhaust gas, exhaust gas, tail gas, etc.;
Measurement of non-corrosive gases such as air, oxygen, nitrogen, argon, helium, etc.;
Measurement of coal-bed methane, mine gas and other gases;

A-S Ultrasonic Gas Flow Meter Flow range

Nominal diameter		Turndown ratio	Starting flow	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）	（m³/h）
250	10”	60:1	35	5400	90
300	12”	60:1	51	7500	125
350	14”	60:1	70	10500	175
400	16”	60:1	90	13500	225
500	20”	60:1	140	21000	350
600	24”	60:1	200	30000	500

A-S Ultrasonic Gas Flow Meter Technical specifications

Technical parameter
Parameter category	Specifications
structure type	Direct type
Applicable caliber	DN250-DN600 (other calibers can be customized)
Number of channels	Mono
Flow rate range	0.5-30m/s
level of accuracy	1.5%
Resolution	0.001m/s
Work pressure	0-1.0MPa (default gauge pressure sensor, if you need absolute pressure sensor, you need to customize)
Measuring direction	One-way or two-way measurement
Measurement requirements
Medium temperature	-20℃~60℃(Limit temperature -40℃~85℃)
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	Starting current should be ≥ 2A, steady state operating power ＜15W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Flowmeter host Ex d IIB T5 Gb, transducer Ex mb IIC T5 Gb
Protection level	IP65

A-S Ultrasonic Gas Flow Meter Installation

Installation location	Installation description
A、E	Horizontal installation, it is recommended to install according to this position, the maintenance period is long, and the maintenance amount is small
B、D	Suitable for general conditions with water and dust. The maintenance cycle is shorter than the installation position of A and E
C	Suitable for conditions with less water and dust, the maintenance cycle is shorter than the installation positions of A, B, D, E

A-S Ultrasonic Gas Flow Meter site platform construction diagram

The gas turbine flowmeter integrates temperature, pressure, flow sensors, and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research, and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen, and other gases measurement.

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

KimGuo11

drurylandetheatre.com

A-D pipe segment Ultrasonic Gas Flow Meter

Posted on September 22, 2020 by KimGuo11

A-D Ultrasonic Gas Flow Meter is a pipe section type flow meter, using single or dual channel mode. The sound channel design of the ultrasonic transducer takes into account the requirements of various working conditions. It is suitable for measurement in a variety of harsh environments. Suitable for low flow rate measurement. Suitable for low-frequency pulsating flow measurement.

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

Request a Quote

Ultrasonic Gas Flow Meters

A-D Ultrasonic Gas Flow Meter application

Gas (coke oven gas, blast furnace gas, converter gas, producer gas, blue coal gas) and other gases measurement;
Gas measurement of biogas, bio-fermentation gas, biomass gas, landfill gas, aeration of water treatment plants, etc.;
Measurement of exhaust gases such as flare gas, flue gas, exhaust gas, exhaust gas, tail gas, etc.;
Measurement of non-corrosive gases such as air, oxygen, nitrogen, argon, helium, etc.;
Metering of natural gas, liquefied petroleum gas, coal bed methane, oil and gas, mine gas, wellhead gas and other gases;
Metering of chemical gases such as hydrogen, acetylene and ammonia;

A-D Ultrasonic Gas Flow Meter Flow range

Nominal diameter		Turndown ratio	Starting flow	Q max	Q min
Metric system（mm）	British system (inch)	Turndown ratio	（m³/h）	（m³/h）	（m³/h）
50	2”	30:1	1.4	212	7
80	3”	33:1	3.6	400	12
100	4”	50:1	5.6	700	14
150	6”	60:1	12.7	1900	32
200	8”	60:1	22.6	3400	56

A-D Ultrasonic Gas Flow Meter Technical specifications

Technical parameter
Parameter category	Specifications
structure type	Direct type
Applicable caliber	DN50-DN200 (other calibers can be customized)
Number of channels	Single channel, dual channel
Flow rate range	0.5-30m/s
level of accuracy	1.5% for single channel, 1.0% for dual channel
Resolution	0.001m/s
Flow cutoff point	Qt= 0.2 Q max
Repeatability	1.0 Level： Qt-Qmax 0.2%； Qmin-Qt 0.4% 1.5 Level： Qt-Qmax 0.3%； Qmin-Qt 0.6%
Work pressure	0-1.0MPa (The default gauge pressure sensor, if you need an absolute pressure sensor, you need to customize it)
Measuring direction	One-way or two-way measurement
Measurement requirements
Medium temperature	-20℃~60℃
Ambient temperature	-25℃~ +55℃
Signal, communication and other functions
output signal	4-20mA, frequency (pulse)
Communication Interface	RS-485
Operating Voltage	24VDC
Power consumption	Starting current should be ≥ 2A, steady state operating power ＜15W
data storage	18 months
Front and rear straight pipe	10D before, 5D after
Use operation	Support waveform real-time display and debugging. Set operating parameters through the instrument menu
Alarm function	When the pressure, temperature, ultrasonic signal, instrument hardware, etc. are abnormal, an alarm is generated, and the alarm information can be obtained through the upper computer software to facilitate maintenance.
Explosion protection
Explosion-proof grade	Ex d mb IIB Gb
Protection level	IP65

Extended reading: Ultrasonic Insertion Flow Meter for Lined/Large Pipes

A-D Ultrasonic Gas Flow Meter pipe size

Nominal caliber	Nominal pressure	Flange standard	Measuring tube inner diameter	Body length	Body width	Body height
DN	MPa	Flange standard	（mm）	L（mm）	B（mm）	H(mm)
50	1.0	GB/T 9119	50	520	400	165
80	1.0	GB/T 9119	80	550	430	200
100	1.0	GB/T 9119	100	550	450	220
150	1.0	GB/T 9119	150	600	500	285
200	1.0	GB/T 9119	200	700	550	340

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

KimGuo11

drurylandetheatre.com

Ultrasonic Gas Flow Meter – A series

Posted on September 22, 2020 by KimGuo11

The A series Ultrasonic Gas Flow Meter solves the problem of gas measurement.

A series Ultrasonic Gas Flow Meter is a split flowmeter suitable for gas measurement under complicated working conditions. The gas ultrasonic flowmeter consists of a flowmeter host, a flowmeter body, an ultrasonic transducer, a pressure transmitter, a temperature transmitter, and installation accessories.

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

Request a Quote

Ultrasonic Gas Flow Meters

Features of Ultrasonic Gas Flow Meter – A series

The measurement is not affected by the components, and the dust and moisture are small. Suitable for measuring multi-component gases or gases with changes in composition;
The all-metal design of the transducer is highly reliable and resistant to dirt. It can measure dirty gases such as coal gas and flue gas, and has a long service life;
Use professional digital signal processor. The running speed is fast and the algorithm reliability is high. The flow response is real-time, which can meet the gas measurement of complicated working conditions with rapid changes in temperature, pressure and humidity;
The starting velocity is small, the starting velocity is 0.2 m/s. Suitable for measuring low-speed flow;
Large turndown ratio, turndown ratio 60:1. Measuring flow rate from 0.5~30 m/s;
Can measure pulsating flow and bidirectional flow;
No moving parts, no pressure loss. Reduce use and maintenance costs;
Support online non-stop gas installation and maintenance;
Supports real-time waveform display and debugging, and the operation interface is menu-oriented, which is convenient for users to use;
Support intelligent alarm, convenient for customer maintenance;
Large measuring range, support DN50-DN5000 pipe section measurement

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

Model of Ultrasonic Gas Flow Meter – A series

Code	Content	Meaning
1	D: Pipe segment installation S: Single pole plug-in installation C: Plug-in installation on both sides J: Plug-in installation on the same side	Installation form
2	S: Single channel D: Two-channel	Number of channels
3	DN50 DN80 DN100 DN150 DN200…….DN5000	Caliber
4	A: Helium, nitrogen, neon, argon, air and non-corrosive gases B: Coal-bed methane, natural gas, oil and gas, ethanol boil-off gas, methane, ethane, propane, other alkanes and olefin gases C: Blast furnace gas, converter gas, coke oven gas, carbon monoxide, mine gas and other gases D: Flue gas, torch gas, exhaust gas, exhaust gas, exhaust gas and other gases E: Biogas, fermentation gas, biomass gas and other gases F: Other types of gas	Application field

Example: A-SS-600D represents the A series split single-rod plug-in installation flow meter, measuring pipe section DN600, and the medium used is Class D gas.

**A-D pipe segment Ultrasonic Gas Flow Meter**

**A-S single rod plug-in Ultrasonic Gas Flow Meter**

**A-C Plug-in Ultrasonic Gas Flow Meter on both sides**

**A-J same side plug-in Ultrasonic Gas Flow Meter**

Ultrasonic Gas Flow Meter – A series Installation Precautions

Do not install the flow meter host for outdoor use. When necessary, it should be installed in the instrument protection box. Avoid sun and rain.
The main unit of the flow meter should be installed vertically on the bracket or on the wall. And do not install in places subject to strong vibration.
The flowmeter host should avoid sharing an AC power supply with inverters, electric welders and other equipment.
The housing of the flowmeter host must be grounded separately (grounding resistance <4Ω).
The installation position of the transducer should be as far away as possible from the position that has a great influence on the fluid distribution. Such as: pump, elbow, tee, reducer, etc.
The installation position of the transducer should be as far away as possible from the throttle or regulating valve.
The installation location of the flow meter host and transducer should avoid the environment that can cause resonance of the signal processing unit, ultrasonic transducer and other components. And avoid environments where strong electromagnetic or electronic interference may exist.
When installing, ensure a certain length of straight pipe section upstream and downstream. Usually requires 10D upstream and 5D downstream.
Where there is a danger of lightning strikes, lightning arresters should be installed.
When the distance between the flow transmitter and the ultrasonic probe is far, the direct connection with the flowmeter signal cable will cause signal attenuation and interference. So try to shorten the distance between the two. Generally required: the cable connection distance between the host and the probe is less than 10 meters.
The signal cable connected between the flow transmitter and the ultrasonic probe should be isolated from the power line and avoid using the same casing.

Read more about: Industrial Gas Measurement with Digital Gas Mass Flow Meters

More Features Gas Flow Meters

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

KimGuo11

drurylandetheatre.com