Thermal mass air flow meter

Thermal flow meter measure gas mass flow in various processes and offer distinct advantages, such as repeatability, low maintenance, and operating over a wide flow range. Here we discuss the meter¡¯s fundamentals, the working principle of thermal mass flow measurement, and the two approaches to measuring heat dissipation.
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%
Power supply:DC24V and AC220V
Output:4-20mA,Pulse,RS485

Thermal gas air flow meter is according the principle of constant temperature differential method is adopted for this instrument to measure the gas mass flow accurately, featured by small volume, high degree of digitalization, convenient installation and accurate measurement
Thermal gas mass flow meter have many benefits -Wide turndown ratio,low pressure drop,application flexibility and gas mass flow rate measurement.
DC4-20mA four-wire output
Mass flow unit
SS304 rod
Dual power:24VDC,220VAC
Min.Flow veloctiy:0.1Nm/s
Output:4-20mA

Pulse output thermal gas mass flowmeters is one kind of instrument that measures the gas mass flowrate.
Thermal gas flow meter can be divided into inline type and isert type according to the instructure.
With RS485 or HART communication
Power supply:24VDC ,220VAC
Accuracy:¡À1.0%~¡À1.5%

Thermal mass flow meter is precision instruments that can directly measure mass flow,such as industrial gases, compressed gas, and other gases.
DC4-20mA four-wire output
Mass flow unit
Dual power:24VDC,220VAC
Min.Flow veloctiy:0.1Nm/s
Output:4-20mA

Thermal gas mass flowmeter for natural gas
As one kind gas flow meter,thermal gas mass flow meter also can measure natural gas.
Compared to gas turbine flow meter,the thermal gas mass flow meter is cost-effective and have a wide measurement trundown ratio.

Thermal gas mass flow emter be widely used in the process control and gas flow measurement of petroleum, chemical industry, metallurgy, electric power, water treatment, papermaking, food, medicine, cement, textile and various production and scientific research institutions.
Natural gas thermal gas mass flow meter can reach 1.0% accuracy and has been calibrated by a third-party laboratory.
Dual power:24VDC,220VAC
Min.Flow velocity:0.1Nm/s
Online installation

Thermal flow sensor temp is always 30¡æ higher than the medium temperature (environment temperature), and the meter adopts method of constant differential temperature, therefore the meter don¡¯t need temperature and pressure compensation in principle
Power supply:DC24V and AC220V
Output:4-20mA,Pulse,RS485
Body material:Standard SS304,and SS316 is optional
Velocity:0.1~100Nm/s
Media temperature:-40~+220¡æ

Sometimes thermal gas mass flow meter be used to measure the dangerous gas,such as Natural gas,H2,O2 etc.So the thermal flow meter need with Ex-proof function.
Except above gas,mass flow meter also can measure N2,Ar,Air,CO2 etc
Flow measurement up to 24 points
Correction of output analog quantity Multipoint nonlinear curve correction
Flow and temperature detection at the same time, switch display
Digital LCD display
Stainless steel body
Output:4-20mA,Pulse,RS485
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%

Thermal gas mass flow meter is one of kind mass flow meter which is popular in industrial.
Q&T gas mass thermal flow meters are be calibrated by gas venturi sonic nozzle calibration device,and ensure the thermal gas mass flowmeter accuracy can reach 1.0% and 1.5%.
Volume flow /Mass flow
SUS304 body
MODBUS RTU RS485
0.1~100Nm/s
4 lines LCD
EX-PROOF

Natural gas thermal mass flow meters measure the mass flowrate of fluids by measuring the heat conducted from a heated surface to the flowing fluid. Since a flowing fluid removes a known quantity of heat as it passes, the temperature difference between the heated sensor and the flow stream is directly proportional to the mass flow rate.
With RS485 or HART communication
Power supply:24VDC ,220VAC
Accuracy:¡À1.0%~¡À1.5%

Thermal gas mass flow meter can measure the flow velocity,so its also named thermal gas velocity meters which maily measure the velocity of air.
Whenever low pressure loss is important in gas industry thermal mass flowmeters offer a real alternative to traditional measuring techniques.
Flow range:1:100
Pressure up to 4.0Mpa
4-20mA is Optical isolation
Power supply:24VDC&220VAC
Response time:1S

Q&T thermal gas mass flow meter can be divided into five sections for correction,this operation will make measuring more accurate
Line type accuracy is ¡À1.0%
Insertion type accuracy is ¡À1.5%

Thermal gas flowmeter is mainly used for measuring gas with low flow and the range could reach 1:100,which is btter than gas flowmeter on market and low flow could be measured,the min.flow velocity can reach 0.1Nm/s and Max. velocity reach 100Nm/s
Volume flow /Mass flow

Thermal gas mass flowmeter’s medium temperature range of meter is -40¡æ¡«220¡æ.
When the gas is very humid or saturated with water (e. g. Bio Gas), the piping and flowmeter body should be insulated to prevent water droplets condensing on the measuring sensor.
Insertion type:DN32~DN4000
Flange type:DN10~DN300
Tri-clamp type :DN10~DN100
Thread type:DN10~DN100

Compressed air thermal gas mass flow meter is very intelligent gas flow meter and can display Nm3 and Kg unit at same time.
And thermal gas mass flow meter be adopted dual power supply,user can easy to choose the poer spurce.
Thermal flow meter measure gas mass flow in various processes and offer distinct advantages, such as repeatability, low maintenance, and operating over a wide flow range. Here we discuss the meter¡¯s fundamentals, the working principle of thermal mass flow measurement, and the two approaches to measuring heat dissipation.

Pulse output thermal gas mass flowmeters is one kind of instrument that measures the gas mass flowrate.
Thermal gas flow meter can be divided into inline type and isert type according to the instructure.
With RS485 or HART communication

Air thermal gas mass flow meter is very intelligent gas flow meter and can display Nm3 and Kg unit at same time.
And thermal gas mass flow meter be adopted dual power supply,user can easy to choose the poer spurce.
Thermal flow meter measure gas mass flow in various processes and offer distinct advantages, such as repeatability, low maintenance, and operating over a wide flow range. Here we discuss the meter¡¯s fundamentals, the working principle of thermal mass flow measurement, and the two approaches to measuring heat dissipation.
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%
Power supply:DC24V and AC220V
Output:4-20mA,Pulse,RS485

Thermal mass flowmeters are suitable for all industrial and test rig applications that demand quick and precise gas measurement.
Thermal air mass flow meter be adopted the critical flow nozzle calibration device to calibrate each gas mass flow meter,the calibration device flow range can reach Min. 0.5m3/h and Max.10000 m3/h .
Widely turndown ratio:100:1
Power supply:24VDC&220VAC
Response time:1S

Wafer type thermalg gas mass flow meter is an instrument which measures fluid flow by means of heat conduction.
Straight pipe runs can be reduced by using dual-plate flow conditioning elements and installation is very simple with minimal pipe intrusions.
Body material is SS304
Large diameter, low flow rate, negligible pressure loss

Q&T gas mass thermal flow meters are be calibrated by gas venturi sonic nozzle calibration device,and ensure the thermal gas mass flowmeter accuracy can reach 1.0% and 1.5%.
When calibrate thermal flow meter,Q&T will choose four flow velocity points ,then calibrate 3 times each velocity point
Media:All gas except acetylene and humid gas
Measure range:1:100
Sesnsor working temperature:-20~220℃
Transmitter working temperature:-20~45℃
Output:4-20mA

Thernal gas flow meter is one kind smart gas flow instrument, It can easily and accurately detect the mass flowrate of gas,specical for low flowrate.
Such as :Air, Nitrogen, Hydrogen, Oxygen, Chlorine, Natural gas, Flue gas and Other gases (except acetylene gas)
Thermal gas mass flow emter be widely used in the process control and gas flow measurement of petroleum, chemical industry, metallurgy, electric power, water treatment, papermaking, food, medicine, cement, textile and various production and scientific research institutions.

Tri-clamp thermal gas mass flow meter body be adopted SS304 and probe is SS316
Tri-clamp connect is fast to install and it no moving parts, nearly unobstructed straight through flow path, require no temperature or pressure corrections and retain accuracy over a wide range of flow rates.
Tri-clamp thermal gas mass flow meter size from DN15~DN100mm

Thermal mass flow meter is precision instruments that can directly measure mass flow,such as industrial gases, compressed gas, and other gases.
Pulse output thermal mass flowmeters are suitable for all industrial and test rig applications that demand quick and precise gas measurement.
Pressure:
Insertion type¡Ü1.6Mpa
Flange type ¡Ü4.0Mpa
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%
Power supply:DC24V and AC220V

Thermal flowmeters directly indicate the mass flow or normalized volume flow of gases without any additional pressure and temperature compensation. They have an impressively high accuracy, short response time and a very wide flow range with virtually no loss of accuracy even at the lowest flow rates
Mass flow
SS304 rod
Dual power:24VDC,220VAC
Min.Flow velocity:0.1Nm/s
Online installation

Thermal meters require a fully developed flow profile as a prerequisite for correct flow measurement.
When the gas is very humid or saturated with water (e. g. Bio Gas), the piping and flowmeter body should be insulated to prevent water droplets condensing on the measuring sensor.
DC4-20mA four-wire output
Mass flow unit
Dual power:24VDC,220VAC
Min.Flow veloctiy:0.1Nm/s
Output:4-20mA

The thermal gas flowmeter is mainly used for measuring gas with low flow and the range could reach 1:100,which is btter than gas flowmeter on market and low flow could be measured,the min.flow velocity can reach 0.1Nm/s and Max. velocity reach 100Nm/s
Media:All gas except acetylene and humid gas
Measure range:1:100
Sesnsor working temperature:-20~220℃
Transmitter working temperature:-20~45℃
Output:4-20mA
Accuracy:±1.0%~±2.5%
Probe material:SS316L
Power supply:24VDC ,220VAC
Response time:1S
Display:4 line digital

Thermal gas mass flow meter mainly measure various of gases ,special dry gases,but thermal gas mass flow meter can’t measure acetylene.
In many applications, the thermal properties of the fluid can be dependent upon fluid composition. In such applications, varying composition of the fluid during actual operation can affect the thermal flow measurement. Therefore, it is important for the thermal flow meter supplier to know the composition of the fluid so that the proper calibration factor can be used to determine the flow rate accurately
Widly flow range ratio:1:100
Display:4 line digital
With RS485 or HART communication
Power supply:24VDC ,220VAC
Accuracy:¡À1.0%~¡À1.5%

Thermal mass flow meter is precision instruments that can directly measure mass flow,such as industrial gases, compressed gas, and other gases.
Gas thermal mass flow meter body is be made by stainless steel and stainless steel is more durable and better air tightness.
DC4-20mA four-wire output
Mass flow unit
Dual power:24VDC,220VAC
Min.Flow veloctiy:0.1Nm/s
Output:4-20mA

Thermal gas mass flow meter for pipe dia. DN10~DN2000 and is precision instrument that directly measure gas.
Themal mass flow meter have widely turndown ratio 1:100,so this flow meter is advantage for low flowrate and can be used to detect leak.
SUS304 body
MODBUS RTU RS485
0.1~100Nm/s
4 lines LCD
EX-PROOF

Q&T adopt the critical flow nozzle calibration device to calibrate each gas mass flow meter,the calibration device flow range can reach Min. 0.5m3/h and Max.10000 m3/h .
Nozzle calibration device more ensure the flow meters’ accuracy
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%
Power supply:DC24V and AC220V