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Testo 635-1, humidity/temperature measuring instrument, with battery and calibration protocol.


The testo 635-1 for measuring air moisture, material equilibrium moisture and pressure dewpoint in compressed air systems. Up to 3 temperature or humidity probes can be displayed; data transmission is radio-controlled, i.e. wireless. Measurement data can be transmitted by infrared to the Testo printer. It is also possible, during cyclical printing, to print measurement data once every minute, for example.

testo 635-1 immediately displays the dewpoint difference between ambient air and the wall surface when analysing moisture on walls and ceilings.

There are precision probes up to -60°C tpd available to inspect pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself world-wide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.

What's Included:
  • Testo 635-1 temperature and humidity measuring instrument, including calibration protocol and batteries.

Key Features:
  • Probes available as an option mean you can measure air humidity, temperature, absolute pressure and dew point in compressed air
  • Measures air moisture, material equilibrium moisture, pressure dewpoint
  • Calculates dew point and dew point distance
  • Cyclical printing of readings once a minute, for example
Read more
Product Type:
2 Years
Battery Life:
200 Hours
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