This temperature differential is directly proportional to the mass flow measurement. All thermal mass flowmeters ... which shows an FCI Model ST100 using an actual gas calibration for natural gas.

Know your options when selecting the appropriate flowmeter technology to measure natural gas ... are suitable for direct mass flow measurement of gases, not volumetric flow. Because thermal mass ...

The MicroTrak provides the most accurate measurement of very low-flow gases. Systems integrators/OEMs and lab researchers treat the MicroTrak thermal mass flow controller as a true multi-gas digital ...

span and full scale independently for each gas. DIY Calibration: If you prefer to calibrate your own mass flow meters and controllers in-house, Sierra provides all necessary software and training ...