Extech 412400 Multifunction Process Calibrator

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This multifunctional calibrator can be used to measure and source current, voltage and type J, K and T type thermocouples.

Part of Extech’s Oyster series, the 412400 features unique, flip-lid design for easy storage of the meter. The LCD screen of the device is integrated into the lid, whereas functions are easily operable by using the touchpad underneath.

  • Source 0 to 24mA with 0.01mA resolution
  • Measure 0 to 50mA (0.1mA resolution)
  • Select Type K, J, or T thermocouple for precision calibrations in °F/°C or mV
  • Output 0 to 1999mV or 0 to 10.00V
  • Measure 0 to 19.99V
  • Single/continuous step function for Voltage and Current
  • Self-contained 24V loop power supply drives current loads up to 1000Ohm
  • 5 stored calibration values of each type for fast calibrations
  • Complete with six AA batteries and calibration cable with spade lug terminals

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pdf-6    Extech 412400 Datasheet

pdf-6    Extech 412400 User Manual

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The Extech 412400 Multifunction Process Calibrator sources and measures Thermocouples (J, K, and T), mA, mV, and V devices. The 24V Loop Supply drives current loads up to 1000 ohms. Memory for 5 user settable output values of each type for fast calibrations. Single/continuous step function for Voltage and Current

Due to the flip case the Extech 412400 Multifunction Process Calibrator is ideal for taking out on a job on field service and maintenance. It’s measuring and sourcing functions make it suitable for use in a wide array of different applications and it also contains additional features such as a single/continuous step function for both voltage and current and a self-contained 24V loop power supply.

It is also possible to store up to 5 user settable output values in order to make calibration quicker in repetitive testing applications.

Extech 412400 Multifunction Process Calibrator Specifications:

Specifications Range Accuracy (of reading)
DC Source
Current 0 to 24mA, -25% to +125% ±(0.075% + 1 digit) or ± 3 digits, whichever is greater
Voltage 0 to 10V ±(0.075% + 1 digit) or ± 3 digits, whichever is greater
Type J -58 to 1830°F (-50 to 1000°C) ±(0.15% + 1.8°F or 1°C)
Type K -58 to 2498°F (-50 to 1370°C) ±(0.15% + 1.8°F or 1°C)
Type T -184 to 752°F (-120 to 400°C) ±(0.15% + 1.8°F or 1°C)
Loop Power 24V ±(10μV ± 1 digit)
Max Load 1000 @ 24mA
DC Measure
Current 0 to 50mA, -25% to +230% ±(0.075% + 1 digit) or ± 3 digits, whichever is greater
Voltage 0 to 20V ±(0.075% + 1 digit) or ± 3 digits, whichever is greater
Type J -58 to 1830°F (-50 to 1000°C) ±(0.15% + 1.8°F or 1°C)
Type K -58 to 2498°F (-50 to 1370°C) ±(0.15% + 1.8°F or 1°C)
Type T -184 to 752°F (-120 to 400°C) ±(0.15% + 1.8°F or 1°C)
Dimensions/Weight  3.8 x 4.7 x 2.0″ (96 x 118 x 45mm)/12oz (340g)