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Testo 831 - Infrared Thermometer

2-point laser sighting, 30:1 optics, belt holder, incl. Batteries and factory calibration certificate


The measurement point diameter of this practical infrared thermometer is only 3.6 cm at a distance of 1 m.

The advantage: even smaller objects such as yoghurt pots can be measured conveniently at a distance. Thanks to a 2-point laser marker, the diameter of the measurement point is displayed exactly, avoiding measurement errors.

Now you can even perform multi-scanning! At two measurements per second, the testo 831 is so fast that scans of palettes of refrigerated shelving can be carried out easily.

  • Infrared thermometer with 30:1 optics
  • Broad measurement range of -30 to +210 °C
  • Backlit display
  • Alarm limit values can be set and are optically and audibly indicated
  • Including belt holder and factory calibration certificate
  • Also available as a set with the core thermometer testo 106
  • 2 laser beams for marking the measurement spot
  • Hold-function and max./min.values


Illuminated LCD

Storage temperature

-40 to +70 °C

Operating temperature

-20 to +50 °C

Battery type

9V block battery

Battery life

15 h


200 g


190 x 75 x 38 mm

Probe - Infrared

Meas. Range

-30 to +210 °C



Hartwig instruments
Pottebakkerstraat 15
NL3194AD Rotterdam-Hoogvliet
Tel: +31(0)10-438-5286
Fax: +31(0)10-438-2099
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