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Thermocouple Calibrator – PRC20 – Extech


The Extech PRC20 Thermocouple Calibrator is a precision multi-thermocouple source/measure calibrator. The PRC20 sources and measures eight thermocouple type devices (J, K, T, E, C, R, S and N) and provides precision output displayed as Centigrade/Fahrenheit or mV. It has five user adjustable calibration presets and a Type K temperature range of -58 to 2498 degrees F (-50 to 1370 degrees C).

The PRC20 is suitable for Lab and field calibration, Engineering research and design, manufacturing and test engineering, Temperature control process troubleshooting and HVAC applications. It offers accurate calibration for transmitters, thermometers, recorders or controllers.

The Extech PRC20 Thermocouple Calibrator features a palm-sized 4 Inch double-molded construction. This calibrator comes with a large digital backlit LCD offering quick and accurate measurements. Its large battery backup and external adapter offers extended and consistent working hours. Comes with thermocouple calibration cable with subminiature connectors, standard calibration cable with subminiature connectors, 100V-240V AC universal adaptor with four plugs, six 1.5-volt AA batteries, hard case, and user manual.


  • Measure & source (simulate) 8 T/C types
  • Display ºC, ºF or mV
  • 5 user adjustable presets
  • Miniature thermocouple connector
  • Battery or AC power


  • Field and Lab Calibrations & Verification Operation of Controllers, Thermocouple Probes, Sensors, Testing tools & Panel meters
  • Engineering Research & Design
  • Manufacturing & Test Engineering
  • Troubleshooting for Temp. Control Process
  • HVAC
Thermocouple Calibrator Specs

Catalog Page 165a                    PRC20 Datasheet

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Item # Item Name
EX/PRC20Thermocouple Calibrator with Cold Jucntion Compensation
EX/PRC20-NISTExtech Thermocouple Calibrator with Cold Junction Compensation and NIST tracable Certificate
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