Application of thermal mass flowmeter

thermal gas mass flow meter working principle

The thermal flow meter is a flow meter designed based on the principle of thermal diffusion. That is, when the fluid flows through the heating 

object, the heat loss of the heating object is proportional to the flow rate of the fluid. The sensors of this series of flowmeters have two

 standard One is used as a heat source, and the other is used to measure the fluid temperature. When the fluid flows, the temperature 

difference between the two is in a linear relationship with the flow rate, and then through the microelectronic control technology, this

 relationship Converted to a linear output of the measured flow signal.

Technical Parameters

Applicable medium: all gases compatible with stainless steel

Measuring range: 0.05 - 120m/s

Working temperature: -40°C - 510°C

Ambient temperature: -40°C - 85°C Humidity less than 90%RH

Pressure drop:

Negligible power requirements for pipe diameters greater than or equal to 3 inches:

18 - 30VDC 600mA max

180 - 230VAC 2.5W max

100VAC max 3.15W

Output signal: Linear 4-20mA proportional to mass flow and linear 4-20mA proportional to temperature

Accuracy: 1% of reading ±0.5% of full scale

Repeatability: ±0.2%F.S

Pressure resistance: 4.2MPa

Response time: ≤850ms

Shell material: die-cast aluminum, A2/A4 optional

Probe material: 316L, tantalum, titanium, etc. optional

Ball valve: 316L

Compression fitting: 316L/304

Flange: 316L/304

Alarm output: Relay normally open contact capacity 220AC/3A or 24VDC (alarm output only for flow value), can output temperature

Display: widescreen LCD display, parameters and variables can be set through the buttons on the panel (with password protection)

Protection class: IP65

Application field

● Oxygen, nitrogen, hydrogen, chlorine and multi-component gas measurement.

● Measurement of blast furnace gas and coke oven gas.

● Flue gas measurement.

● Biogas, aeration and chlorine measurement in water treatment.

● Compressed air measurement.

● Gas flow measurement of natural gas, liquefied petroleum gas, flare gas, etc.

● Flow measurement of primary air and secondary air of blast furnace in power plant

● Flow measurement of underground ventilation or exhaust system in mine

●Air flow measurement in gas process

●Measurement of flue gas flow (velocity) from the chimney (CEMS)

● Calciner flue gas flow measurement

●Gas flow measurement in the production process of cement, cigarette and glass factories

●Gas flow measurement in solvent recovery system

●Gas flow measurement during semiconductor chip fabrication

●Carbon dioxide gas flow measurement during beer production

●Gas flow (velocity) measurement in heating ventilation and air conditioning systems

●Combustion gas flow measurement in coal-fired boilers

●Real-time detection of flow (velocity) in mine underground ventilation or exhaust system

If you want to know how to choose a thermal gas flow meter and quote, 

please contact winny han: sales01@cxflowmeter.com

whatsapp:008618049841995