Loop Process Calibrator - (PCAL300)The Triplett PCAL300 Loop Process Calibrator for benchtop and field industrial process device testing and calibration can easily measure DC voltage current and source DC mA current with an accuracy of 0. 02%. It can simultaneously provide 24V loop power to transmitter while conducting mA current measurement. In addition, it features an adjustable 0 20mA 4 20mA span with % readout, automatic sawtooth or triangular output current step function, auto