The principle of pressure transmitter is that the medium pressure acts directly on the sensitive diaphragm, and the Wheatstone bridge consists of resistors distributed on the sensitive diaphragm. Pressure signals are converted into electrical signals through piezoresistive effect, and millivolt signals generated by sensitive elements are amplified into industrial signals (such as 4~20 mA, 0≤5V) through electronic circuits. But the pressure transmitter has only one pressure interface.
Please consult Mike sensor co., ltd for more details!