Thermal Mass Flowmeter
Thermal gas flowmeters are designed based on the principle of thermal diffusion to directly measure mass flow and display standard flow without temperature and pressure compensation. The instrument adopts the method of constant temperature difference or constant power to measure the gas accurately. It has small size, high digitization degree, and wide range ratio, which is not affected by temperature and pressure changes, flexible installation with optional insertion and high precision.
Application Feature
- Compressed air, air volume
- Nitrogen and other dry gases
- Ultra-low flow gas
Feature
- The range ratio is extremely wide, and small flow rate and large flow rate can be measured simultaneously.
- No temperature, pressure compensation required.
- Wide range of measuring calibers, optional tube segment or plug-in installation.
- It can complete the leak detection work of process pipeline and equipment.
- Plug-in construction is minimal, requiring only one M20×1.5 hole in the pipe.
- Standard with ball valve, easy maintenance.
Product Parameter
|
Model |
Performance Parameter |
|
Suitable mouth diameter |
Ф15-Ф3000mm |
|
Suitable medium |
Gases compatible with stainless steel, (air, hydrogen, nitrogen, acetylene gas, etc.) |
|
Precision |
1.5% |
|
Reproducibility |
±0.15%FS |
|
Intermediate temperature |
Room temperature: -20-100℃ High temperature: -20-200℃ |
|
Medium pressure |
<3MPa |
|
Power supply |
24VDC or 220VAC |
|
Signal output |
pulse signal, 4-20mA |
|
Communication output |
RS485, HART protocol |
|
Installation mode |
Pipe segment, insert type |
|
The straight pipe section requires |
10D upstream and 5D downstream |
|
Protection grade |
IP65 |
|
Explosion-proof Class |
ExdIICT4 |


