The testo 635-1 temperature and humidity measuring instrument is ideally equipped for checking the air humidity, temperature and dew point in living areas, in production, storage and server areas and in museums and cold stores. Measurements of the ambient absolute pressure and dew point in compressed air can be quickly and efficiently carried out with the testo 635-1.
Attachable probes, which are available as an option, mean the measuring instrument can record the following values:
- Air humidity
- Material moisture
- Pressure dew point in compressed air
- Air temperature
- Surface temperature
- Core temperature
- U-value
- Absolute pressure
Delivery Scope
testo 635-1 temperature and humidity measuring instrument, including calibration protocol and batteries.
Caution: The instrument can only be commissioned with a probe. These are available separately.
Temperature - NTC Measuring range
-40 to +150 °C
Accuracy
±0.2 °C (-25 to +74.9 °C)
±0.4 °C (-40 to -25.1 °C)
±0.4 °C (+75 to +99.9 °C)
±0.5 % of mv (Remaining Range)
Resolution
0.1 °C
Temperature - TC Type K (NiCr-Ni) Measuring range
-200 to +1370 °C
Accuracy
±0.3 °C (-60 to +60 °C)
±(0.2 °C + 0.3 % of mv) (Remaining Range)
Resolution
0.1 °C
Humidity - Capacitive Measuring range
0 to +100 %RH
Accuracy
See probe data
Resolution
0.1 %RH
Absolute Pressure Measuring range
0 to 2000 hPa
Accuracy
See probe data
Resolution
0.1 hPa
General technical data Storage temperature
-30 to +70 °C
Weight
428 g
Dimensions
220 x 74 x 46 mm
Operating temperature
-20 to +50 °C
Housing
ABS / TPE / Metal
Warranty
2 years
Battery type
Alkali manganese, mignon, type AA
Battery life
200 h
