The mA simulate function of a loop calibrator is very useful for testing and troubleshooting 4 to 20 mA process control loops. In mA simulate, a loop calibrator essentially replicates the function of a process instrument when connected in place of the transmitter. The mA simulate function is often referred to as transmitter simulate on the loop troubleshooting tool. In mA simulate mode, the loop calibrator is technically a mA sink. This means it regulates a programmed mA signal value and draws power...