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Yellow rectangular handheld calibrator with digital display and test lead ports

MASTECH

MASTECH MS7220 Thermocouple Calibrator Tester

SKU CH-7KR4-E0DAA

Measures and simulates eight thermocouple types from minus 200 to 1800 with 0.1 resolution and 88888-count display

  • TypeDigital Multimeters
  • Professional calibration with 8 thermocouple types supported
  • Measure temperature directly from TC output up to 1800
  • Simulate TC output for transmitter testing with mV source
  • Selectable Celsius or Fahrenheit readout on 88888-count display
  • Compact 19 x 8.5 x 4.5 cm design weighs 410g

Professional Thermocouple Calibrator

The MASTECH MS7220 is a portable professional thermocouple calibrator tester designed for technicians and engineers who need to measure and simulate thermocouple signals. It operates with eight thermocouple types including J, K, T, E, N, R, S, and B per NIST 175 and ITS-90 standards. The instrument provides a digital display with 88888 counts and selectable Celsius or Fahrenheit units. It suits field calibration and laboratory verification tasks where thermocouple simulation and measurement are required.

Thermals Noise and Power Draw

The device is powered by a single 9V 6F22 battery which is not included in the package. As a handheld digital instrument it produces no audible fan noise and generates negligible heat during normal operation. Current draw is low enough for extended field sessions on one battery. The unit has no active cooling system and its thermal output does not affect measurement accuracy in typical ambient conditions.

Bundled Accessories and Software

The package includes the calibrator unit, one set of test leads, and a carry case for transport and protection. The test leads enable direct connection to thermocouple circuits and mV sources for calibration of linear TC transmitters. The carry case stores the instrument and leads together for field deployment. No software, communication cables, or additional adapters are supplied.

Highlights

  • Professional calibration with 8 thermocouple types supported
  • Measure temperature directly from TC output up to 1800
  • Simulate TC output for transmitter testing with mV source
  • Selectable Celsius or Fahrenheit readout on 88888-count display
  • Compact 19 x 8.5 x 4.5 cm design weighs 410g

Specifications

TypeDigital Multimeters

Questions about this item

How do I power the MS7220 and what step do people miss?

Insert a 9V 6F22 battery into the rear compartment; the unit ships without one because postal rules forbid shipping it, so you must supply your own before first use.

What ongoing maintenance does the calibrator need?

Replace the 9V battery when the low-battery indicator appears; the test leads and carry case require no scheduled service.

What limit appears first during extended temperature simulation?

Battery drain ends the session; the 88888-count display and 0.1 °C resolution remain within spec for the full -200 to 1800 °C range across all eight thermocouple types.

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