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With the PIECAL 422, you can check & calibrate all your thermocouple instruments and measure thermocouple sensors. Plug in any thermocouple via a miniature thermocouple jack.

Carry it without worry - it comes protected with a rubber boot and rugged, low profile switch. The PIECAL 422 is easy to operate, even in the dark areas of the plant with the backlit display.

Stop carrying around a millivolt source and thermocouple tables. The PIECAL 422 works with the thermocouples you use, including types J, K, T, E, R, S, B, N, G, C, D, L (J-DIN), U (T-DIN) and P (Platinel II).


You can easily set any value quickly to within 0.1° with the adjustable digital potentiometer “DIAL”, store any three temperatures for instant recall with the EZ-CHECK™ switch, or even calibrate from -13.000 to +80.000 mV.

  • Source and read fourteen T/C types plus mV
    J, K, T, E, R, S, B, N, G, C, D, L (J DIN), U (T DIN) & P (Platinel): -13.000 to 80.000 mV

  • Calibrate with confidence
    Resolution to 0.1 °F & °C; accurate to 0.2°

  • Faster calibrations
    Instantly select three outputs with EZ-CHECK switch
    Easily find trip points with two speed EZ-DIAL knob & automatic stepping

  • Includes ramp feature

  • Easily change T/C types & scale
    Double click to select T/C type & °F & °C

  • Easy-to-read display
    Turn on the backlight to read in dark areas of the plant

  • Use in the plant, field or shop
    Includes rubber boot and mV test leads
    Low profile switches resist accidental damage

  • Simple "No Tool" battery changes
    Four inexpensive "AA" batteries

  • Verify cold junction temperature & output 
    Secondary display of compensated millivolt setting and cold junction temperature

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