Why is there a pressure gauge behind the pump?
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Ask a very basic question: What is the pressure gauge behind the pump used for? Thanks
I think this question should be asked more clearly by those who make the process, because it should be covered in chemical engineering principles, but I think the purpose of adding a pressure gauge at the outlet of the pump is nothing more than to detect whether the pump is working properly, whether there is blockage, cavitation, overload, etc.
Some craftsmen said that instead of installing a pressure gauge, the operating status can be understood by looking at the motor current. I don’t know if this will work!
It depends on the medium. For general water, you can use a Bourdon tube, and for corrosive materials such as salt water, you can use a membrane box. Low-pressure steam requires a Bourdon tube + siphon.
It's a good question, but we can't explain it. We really should ask about the craftsmanship!
The direct purpose of installing an on-site pressure gauge at the pump outlet should be to visually observe on site whether the pump is operating normally and whether there is blockage or cavitation. It is possible to observe whether the current signal of the motor is too high, but it needs to be seen in the control room, which is not direct enough. Therefore, installing a pressure gauge at the pump outlet is a more convenient method for inspection personnel.
The explanation above is very detailed, and the operation on site is intuitive with the pressure gauge.