pressure on the pressure transmitter acts as a force on the diaphragm depending on the applied pressure the diaphragm either expands or compresses, and the resistance value changes accordingly. The value is then transmitted as an electrical signalSmart pressure transmitters have the sensor converting pressure into an electric signal, amplified and passed to the built-in converter, as opposed to usual setups where the signal goes to a central controller. The converter processes the data on the fly and actively regulates measurements