The state of the art Practical Instruments Electronics (PIE) PIECAL334 loop calibrator is a highly reliable, rugged, and easy to use milliamp calibrator. It has the functions necessary to perform the most demanding maintenance and field calibration tasks of virtually any 4-20mA loop.

The PIECAL334 provides source and read milliamp functions along with power and measure and two wire transmitter simulations. In addition, it measures DC Voltage for troubleshooting power supplies. It is functionally equivalent to similar calibrators with four digit displays, knobs, and switches, but with updated design, better long term stability, accuracy, and reliability.

The PIECAL334Plus provides the same benefits and functionality while adding advanced features unique to PIE calibrators. Patented loop diagnostic technology allows users to easily find current leaks to ground, deteriorating and damp insulation or corroded terminals. Automated stepping (2, 3 or 5 steps) and ramping lets users set the calibrator at one instrument and check any other point in the loop.

The 5-digit display reads to 20.000mA giving better resolution and better calibrations. A built-in backlight helps in low light conditions. The built-in 250 Ohm HART resistor supports HART communication devices.