What is a differential pressure transmitter? (DP transmitter)
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A differential pressure transmitter or other (DP) devices get a lot of use because of their flexibility and simplicity. Even though you can find better options in the market today, many field engineers still stick to the good old DP.
A differential pressure transmitter is composed of a sensing cell and a transmitter. The cell has two pressure chambers separated by a diaphragm. We call one chamber the high-pressure side and the other the low-pressure side, but you don’t have to take that literally. It just tells you the direction of the impact that pressure will have on the output signal.