The steam temperature and pressure compensation problem awaits explanation!
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Steam can be used everywhere in chemical equipment, but some use temperature and pressure compensation technology when measuring flow, and some do not. Here, I would like to find a knowledgeable friend to point out, under what circumstances, it is necessary to use temperature and pressure compensation technology! Is gas required? This post was last edited by psw1420 on 2009-4-14 08:04 ]
The so-called temperature and pressure compensation is to correct the working condition flow compensation to the flow rate under the standard state. If the flow requirements under the standard state are very strict when using steam, it should be corrected, or it should also be corrected as a trade measurement. If you can roughly grasp the parameters just for understanding, reference or simple conversion, you don’t need compensation.
Generally, the flow rate involved in the control does not need to be corrected by temperature and pressure, and external metering is required.
Temperature and pressure compensation is a more accurate measurement. When the measurement accuracy is not high, compensation does not need to be compensated, but the error is higher. The reason why temperature and pressure compensation is needed is that the density of steam changes greatly with temperature and pressure. Generally, flow meters measure volume flow. In the process of converting to mass flow, steam density W=V needs to be used. * ρ, the flowmeter without temperature and pressure compensation is converted based on the fixed steam density (under average temperature and pressure), and the flowmeter with temperature and pressure compensation is converted from volume flow to mass flow based on the density of steam under actual measured steam temperature and pressure. The measurement results obtained in this way are of course more accurate than those without compensation. This post was last edited by psw1420 on 2009-4-14 08:03 ]