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Testo 835-H1 – Infrared Thermometer With Surface Moisture Measurement.


1 in stock

  • Measure temperature, surface moisture and dew point with only one device
  • Four-Point-Laser and 50:1 Optics for precise measurements even over long distances
  • Easy and comfortable to use: easy-to-follow menu guide
  • Saves up to 200 readings

36,399.00  51,999.00 

1 in stock


Product Description

With testo 835-H1, you can perform temperature and surface moisture measurements on walls, monitor and check air conditioning and ventilation systems, service and inspect industrial system to ensure constant high levels of quality in production processes are maintained. The testo 835-H1 is an ideal all-round device for a wide range of industrial and commercial applications.

What the testo 835-H1 infrared thermometer and surface moisture meter can do

–  Measure the surface temperature and relative humidity and check the dew point and surface moisture
–  Help to detect mold in buildings before it’s too late
–  Carry out measurements on small, moving or hard-to-reach objects, accurately and safely
Benefit from state-of-the-art technology and easy handling
–  4-Point-Laser: shows the exact measuring zone, effectively preventing wrong measurements
–  50:1 optics that provide you with excellent surface temperature measurements even over greater distances (distance 5 m  = 10cm measurement spot)
–  Adjustable degree of emission for measuring a wide variety of different surfaces
–  Connectivity for temperature sensors: for additional contact measurements for materials with low degree of emission possible –simply connect your optionally available temperature sensor
–  Easy-to-use, easy-to-follow menu guide thanks to icons and joystick
–  Generate measuring points and save up to 200 measurements
–  Define individual alarm thresholds, acoustic and optical alarm
–  Show min/max values
–  Backlit display

Technical data

Temperature - TC Type K (NiCr-Ni)

Measuring range

-50 to +600 °C


±(0.5 °C + 0.5 % of mv)

Infrared resolution

0.1 °C

Temperature - Infrared

Measuring range

-30 to +600 °C


±2.5 °C (-30.0 to -20.1 °C)
±1.5 °C (-20.0 to -0.1 °C)
±1.0 °C (0.0 to +99.9 °C)
±1 % of mv (Remaining Range)

Infrared resolution

0.1 °C

Humidity - Capacitive

Measuring range

0 to 100 %RH


±2 %RH
±0.5 °C


0.1 °C
0.1 %RH
0.1 °Ctd

General technical data


514 g


193 x 166 x 63 mm

Operating temperature

-20 to +50 °C

Product-/housing material


Emissivity table

20 values

Laser spot

on / off


EN 61326-1:2006

Alarm function

audible; Optical

Auto-off backlight

30 s*

Auto-off instrument

120 s*

Battery type

3 batteries type AA (or USB operating with PC-Software)

Battery life

25 h (typical 25°C without laser and backlight) 10 h (typical 25°C without backlight)

Display type

Dot Matrix


200 measuring values

Storage temperature

-30 to +50 °C


Estimating wood’s moisture content: 

The amount of moisture in stored timber products will determine how they are used and processed going forward. When wood is installed with the incorrect moisture content, mechanical deformations (contracting and swelling) can occur at the location where the material is later employed, which can lead to damage to individual furniture pieces or entire supporting systems in buildings. Therefore, the appropriateness of the wood must be evaluated by measuring the moisture content before being manufactured into furniture or used as a supporting material by a craftsman.
A routine task for chimney sweeps and flue gas inspectors is to check the moisture content of fuels, such as firewood. A fuel with a high moisture content wastes resources and loses energy. All Testo wood and construction moisture measuring equipment calculates the amount of moisture in the material as a percentage of the dry mass (dry weight).
Other options for measuring resistance include using the material’s electrical conductivity or the magnetic flux leakage method, which gauges resistance using the electrical field within the material.
The testo 606-1 is a portable, highly useful tool for testing the moisture content of materials. Through the use of stored material characteristic curves for wood, the material moisture is directly presented in percentage weight. For assessing wood moisture in beech, fir, larch, oak, pine, and maple wood, characteristic curves are available. Five additional features are saved in the instrument. Two electrodes that have been driven into the material are used by the measuring device to take readings. The testo 606-2 detects ambient temperature and humidity in addition to material wetness. In this approach, it is possible to swiftly and accurately evaluate the conditions of drying on the spot.


Datasheet : Testo 835-H1 – Infrared Thermometer.

Instruction Manual : Testo 835-H1 – Infrared Thermometer.

Delivery Scope

Testo 835-H1 infrared thermometer and surface moisture meter has a moisture measuring function and 4-Point laser marking, measurement data management, PC software, moisture module, batteries, calibration protocol.