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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Extech Process / Temperature Calibrators

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Extech PRC15 Voltage / Current Calibrator


The Extech PRC15 is a precision 0 - 24 Volt DC "source” for process device calibration & simulation.

  • Source to 24mA, 20V
  • Measure to 50mA, 20V
  • 5 user adjustable presets
  • Banana connections
  • Battery or AC power


Extech PRC20 Thermocouple Calibrator


The Extech PRC20 can source & measure 8 different types of thermocouple devices.

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


Extech PRC30 Multifunction Calibator


The Extech PRC30 is a precision process calibrator for current, voltage & thermocouple 8 different types), mV, mA & V devices.

  • Source/Measure Voltage, Current, mV & Thermocouples
  • Combines functions of the PRC15 & PRC20
  • 24V loop power source