What is a 2-wire, 3- wire, and 4 – wire transmitter, and how are they different from each other?
A transmitter is an electronic device that would convert the process variables such as frequency, pressure, temperature, and flow to a 4-20mA signal. So this device would convert the sensor input signals to a control signal which is capable to regulate the current flow. The 2,3, and 4 wire transmitters play a major role in …