The PIE 422Plus has all the functionality of the PIE 422 Thermocouple Calibrator with a built-in Milliamp Calibrator. Dual Channel High Accuracy T/C Calibrator with 14 T/C types mV; milliamp channel includes Patented Current Leakage test.
The PIE 311Plus has all the functionality of the PIE 311 RTD Calibrator (plus additional RTD types) with a built-in Milliamp Calibrator. It can power up a temperature transmitter while simulating the sensor input. Plus it has PIE’s patented Leak Detection to troubleshoot loop wiring problems. The PIE 311Plus haves a LOT more functionality than any competitive models!