The flow rate measured by the thermal gas mass flow meter is the standard flow rate

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The flow rate measured by the thermal gas mass flow meter is usually the standard flow rate. This is because the thermal gas flow meter measures based on thermophysical properties, in which temperature, pressure and density are the key parameters of measurement. These parameters have a fixed relationship under standard conditions (usually standard conditions), so the readings of thermal gas flow meters are often presented as values ​​under standard conditions.

The measuring principle of this type of flow meter is based on the heat transfer effect of gas flowing through the sensor on the sensor surface. Thermal gas flow meters calculate the flow rate of gas by measuring the temperature change of the heating element. Since the gas flowing through the sensor has different densities at different temperatures and pressures, the measured flow rate is often converted into a flow value under standard conditions. , for comparison and analysis.

In practical applications, the measured actual flow rate needs to be converted into the flow rate under standard conditions, which usually requires correction using physical gas laws and fluid mechanics formulas. This is done to ensure that flow rates measured under different conditions can be compared and analyzed under uniform baseline conditions.