Discussion on gas flow meter issues
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Are gas flow meters always displayed in volume terms? Is there still cubic display? If both are present, what is the reason? Seek help from an expert!
The standard cubic volume is the standard flow rate at 0 degrees (20 degrees) and 1 standard atmosphere, expressed in Nm3/h； The flow rate at operating temperature and pressure is expressed in m3/h as the unit symbol ； There is also the Sm3/h version, which refers to the volumetric flow rate under the control condition ； The unit to be used is determined based on the process requirements.
This depends on how your flow meter is configured. If you have chosen a gas mass flow meter, such as a thermal mass flow meter or a Coriolis mass flow meter, the reading displayed on the meter will be in NM3/H. If you use a flow meter based on another velocity method and also incorporate temperature and pressure compensation, then what is displayed on the gauge is also in NM3/H. If there is only a velocity flow meter without temperature and pressure compensation, what is displayed is the volumetric flow rate under the current operating conditions in M/H. The flow rate value obtained with this configuration serves only as a reference and cannot be used as a measurement device.
I agree with the opinion above; basically, velocity flowmeters are those that don’t require precise calculations