What is the density of hot water? Is temperature and pressure compensation required for flow measurement?
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What is the density of water at 0.6 Mpa and 150℃? Is temperature and pressure compensation required when measuring flow rate?
The density of a liquid doesn’t change much, so no compensation is needed.
In my humble opinion, it is relatively more accurate to apply compensation for important instruments under normal conditions.
Is this still water? Isn’t it water vapor?
It’s water; there’s no need for temperature and pressure compensation at such high pressures, as water’s compressibility isn’t very high
If the temperature changes significantly, temperature compensation can be used. If it is not large, one can simply use a flow rate with a fixed density correction.
For water, the effect of pressure is minimal; there is no need to top up under pressure. Temperature has a significant impact on density; temperature compensation can address this issue.
At 0.60.6 Mpa and 164.17℃, it is saturated water vapor; at 150℃ it becomes ordinary water, so no compensation is necessary. If it is a very important measurement point and the temperature of that point changes significantly, corrections can be applied using the relationship between the density of water at different temperatures and pressures.