4-20 mA Current Loops Overview. The 4-20 mA current loop is the prevailing process control signal in many industries. It is an ideal method of transferring process information because …
The 4-20 mA current loop has been the standard for signal transmission and electronic control in control systems since the 1950's. In a current loop, the current signal is drawn from a dc …
1. True/False: The function of a 4-20mA transmitter is to convert a 0-100% signal to a 4-20mA current signal to be transmitted across a long distance. 2