The relationship between orifice plate flow meters and the temperature of the measured medium
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May I ask, does a higher temperature cause the orifice flow meter to show a higher or lower value?
As the temperature rises, the density of the medium increases, and temperature compensation is necessary; without it, the displayed value will be lower than the actual value.
As the temperature rises, the density of the medium increases, and temperature compensation is necessary; without it, the displayed value will be lower than the actual value
When the temperature rises, at the same pressure, the volume expands, the density decreases, and the volumetric flow rate increases; therefore, the actual reading should go up.
Thermal and pressure compensation should be applied; it’s not possible to determine density based on temperature alone. Normal transmitters include density compensation, so there’s no need to worry about temperature issues
If the temperature is higher, the density should decrease, right? Did someone upstairs say the opposite?
The density decreases, so when calculating the differential pressure using the orifice plate, the differential pressure increases; as a result, the measured flow rate is higher than actual.
Just use a flow meter with integrated temperature and pressure compensation