How to select the range of a pressure transmitter for the heat exchanger drain pressure
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I need to measure the drain pressure of the soda water heat exchanger; the pressure ranges from 0.01 Ma to 0.05 Ma. What range of pressure transmitter should I choose?
Based on your description, the drain pressure of the heat exchanger is between 0.01 Ma and 0.05 Ma. According to standard engineering practices, the range of a pressure transmitter should be approximately 1.2 times the hydrophobic pressure. Therefore, it is recommended to choose a pressure transmitter with a range of 0.06 Ma to measure pressures within this range. This ensures that the normal operating range is maintained, while also providing a margin to prevent damage caused by excessive pressure. .
A coefficient of 1.2 is generally sufficient.
If it were me, I would choose a range of 0–1 MPa. There’s no need for anything more; the pressure transmitter has sufficient accuracy and a large enough range, so there’s no need to be overly cautious.
For standard pressure transmitters used in instrumentation processes, an accuracy of 0.2 is acceptable; 0.06 or 0.1 is also viable options.