8
Ensure correct disposal:
Dispose of defective rechargeable batteries and spent
batteries at the collection points provided.
Send the instrument directly to us at the end of its life cycle.
We will ensure that it is disposed of in an environmentally
friendly manner.
4. Intended Use
testo 831 is a compact infrared thermometer for the non-contact
measurement of surface temperatures.
Not suitable for diagnostic measurements in the medical
sector!
5. Technical Data
Feature testo 831
Parameter °C / °F
Infrared measurement range -30 to +210°C / -22 to +410°F
Infrared resolution 0.1°C / 0.1°F
Infrared accuracy ±1.5°C / 1.8°F or 1.5% of reading (-20 to +210°C / -4 to +412°F)
1
;
(at 23°C/73°F) ±2.0°C / 3.6°F or 2.0% of reading (-30 to -20.1°C / -22 to -4°F)
1
;
+/- 1 digit
Emissivity 0.1 to 1.0 adjustable
Infrared measurement rate 0.5s
Optics (90% value) 30:1 (regarding the distance of
1,0 m to measuring object typically)
2
Operating temperature -20 to +50°C / -4 to +122°F
Transport / Storage temperature -40 to +70°C / -40 to +158°F
Power supply 9V block battery
Battery life 15 h
Housing ABS
Dimensions (LxHxB) 190 x 75 x 38 mm / 7.5 x 3.0 x 1.5 in
CE guideline 2014/30/EC
Laser
Laser type 2 x laser
Power < 1 mW
Wavelength 645 to 660 nm
Class 2
Standard DIN NE 60825-1:2001-11
1
the larger value applies
2
+ Opening diameter of the sensor (16mm / 0.6 in)
6. Initial Operation
Insert battery: See 9.1 Changing the battery.
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