Thermal mass air flowmeter with RS485

For the insertion type instrument, on the premise that both the measuring media and field environment are applicable for online dismantlement with non-stop operation, it is viable to have maintenance operation with non-stop operation relying on its special structure
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

According the installation,thermal gas mass flow meter is divide into insertion type and inline type.
Whatever insertion or inline gas mass flow meter,they all have no moving parts and measure the mass of the fluid directly.This make thermal gas mass flow meter measure the standardized volumetric flow rates and totals without the need for temperature or pressure compensation
Velocity:0.1~100Nm/s
Output:4-20mA,Pulse,RS485
Body material:SS304
Alarm output:1-2 relay
Pressure up to 4.0Mpa

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

Thermal gas mass flow meter measure the mass flowrate of gases ,so thermal flow meter is often used in monitoring gas mass-related process.
When thermal gas flow meter measure the gases,the gases’ volume measurement is affected by pressure and temperature,while mass flowrate measurement is unaffected by changes in viscosity, density, temperature, or pressure.
Digital display
Stainless steel body
Anti-corrosion
Pressure up to 4.0Mpa
Dural power:24VDC,220VAC
4-20mA is Optical isolation

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

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

SS304 is the standard material for thermal gas mass flow meter and thermal flow meter is digital display and can
with RS485 or HART communication
Sesnsor working temperature:-20~220¡æ
Transmitter working temperature:-20~45¡æ
Thermal gas flow meter can measure many kinds of gases except acetylene and humid gas and m,easure range can reach 1:100,so it usually be used for leak detection

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

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

Except for acetylene,thermal gas mass flowmeters can measure various of dry gas.
Such as Air, Natrual gas, N2, O2, CO2 etc.When measure the flammable and explosive gas,the flow meter need with ex-proof function.
24VDC will better and safety

Q&T thermal gas mass flow meter with DC4-20mA four-wire output,which is more convenient for remote reception.Support MODBUS RTU RS485 protocol,coordinating the receiving system to collect more data ans modify system
Insertion rod diameter :
DN32~DN50 standard rod dia. 12mm ,14mm is optional
DN65~DN4000 standard rod dia.19mm,12mm and 14mm is optional

As the important gas flow meter,thermal gas flow meter is very popluar to measure various of dry gas.
This gas mass flow meters are be calibrated by sonic nozzle,current the snoic nozzle is more better clibration device for gas flow meter,and ensure the accuracy during calibrating
Pressure up to 4.0Mpa
Dural power:24VDC,220VAC
4-20mA is Optical isolation
Power supply:DC24V and AC220V
Output:4-20mA,Pulse,RS485
Body material:Standard SS304,and SS316 is optional

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

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 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 flow meter is one of kind mass flow meter which is popular in industrial applications is the way they are designed and built. The feature is 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.
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

Gas mass flow meter thermal flowmeters can measure many kinds of dry gas,except acetylena and humid gas.
According to the connection,can produce Flange type,Thread type,Wafer type,Tri-clamp type,Insertion type.
Thermal gas mass flow meter can with DC 4-20mA four-wire output,which is more convenient for remote reception

Gas mass flow meter also means thermal gas mass flow meter.
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.
Output:4-20mA
Accuracy:¡À1.0%~¡À1.5%
Probe material:SS316L
Power supply:24VDC ,220VAC
Response time:1S
Display:4 line digital

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 flow meters are used frequently in monitoring or controlling mass-related processes and measuring range can reach 1:100
So thermal mass flow meters are most often used for the regulation of low gas flowrate.
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

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%
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

Thermal gas mas flow meters are measuring the mass flow or volume flow of gas,flow range can do 0.5Nm/s¡«100Nm/s. So this meter also can be used for gas leak detection.
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.
Flow range:1:100
Pressure up to 4.0Mpa
4-20mA is Optical isolation
Power supply:24VDC&220VAC
Response time:1S

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 flowmeters are suitable for all industrial and test rig applications that demand quick and precise gas measurement. The 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

Theemal 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.
Widely turndown ratio:100:1
Power supply:24VDC&220VAC
Response time:1S

Critical nozzle flow calibration device could load the factor which is stored by systom to the quantity production,same model,same diameter and under calibrated thermal flowmeters,Just need to test the thermal gas mass flow meter and the process of calibration will be finished by factor amend function of this calibration device.
Q&T¡®s every thermal gas mass flowmeters be calibrated by critical nozzl flow calibration device to ensure flow meters accuracy

Insertion thermal gas mass flow meter with anti flush-out design for high pressure,more safety
When absolute pressure of measuring medium is higher than 5 times standard atmospheric pressure, or higher than the pressure of possible danger, should shut down or do reducing pressure to reach a safety pressure, and then do hot-tapped operation. If there are no conditions to do hot-tapped operation, should shut down to avoid dangers.

Thermal gas mas flow meters are measuring the mass flow or volume flow of gas,flow range can do 0.5Nm/s¡«100Nm/s. So this meter also can be used for gas leak detection.
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.
Accuracy:
In-line type accuracy:¡À1.0%
Insertion type accuracy::¡À1.5%
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

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

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.