2025-11
05What is the reason for changing the range of a flowmeter?
ask
Users often ask: Can you change the range of your flowmeter? Usually, after a flow meter is generated, the range is determined. Why do customers request to change the range?
Cause of the problem
From this, it can be seen that the range change is caused by the conversion coefficient of the thermal flowmeter.
Laminar flow range
For the YIDU flowmeter, due to the use of laminar differential pressure principle, gas types are distinguished based on viscosity. Although the viscosity values of different gases are also different, due to the air calibration at the factory, the viscosity of air is in the middle position among commonly used gases, and the viscosity values of other gases differ from air by no more than twice. As long as sufficient margin is reserved in the flow channel design to maintain laminar flow when different gases pass through, multiple gases can be measured without changing the range.
Conclusion
Therefore, there is no such thing as "changing range" for the YIDU flowmeter. A laminar differential pressure flowmeter with an YIDU 100SCCM has a range of 100SCCM for more than 60 gases it can measure.