Products
Loop Calibrators
Loop calibrators source and measure the 4-20 mA current loop signals that carry most process measurements between the field and the control system.
Druck, PIE, Ashcroft and Fluke cover this range. The functions that matter are sourcing a precise current to drive an indicator or valve, measuring loop current without breaking the circuit, and simulating a transmitter so the loop can be exercised from the field. Many units also supply 24 V loop power, which removes the need for a separate supply during bench work. Check whether you need intrinsically safe certification for classified areas, and whether HART communication is required alongside the analog signal.
The PIE 334-F-VIP is a high-precision loop calibrator that sources and reads mA, reads voltage, and simulates 2-wire transmitters. Accurate to ±0.025% of span, it includes a rugged boot, attached test leads, and a free flashlight and calibration labels.