Smart 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 measurementspressure 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 signal