Testo 635-1 Temperature And Humidity Measuring Instrument

Testo 635-1 for temperature and humidity measurement 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. It also aids the measurements of the ambient absolute pressure and dew point in compressed air can be quickly and efficiently.

Applications:Offices, cars, humidors, museums, industrial spaces and greenhouses and are also used in meteorology stations to report and predict weather


Tax /GST included

Testo 635-1 for temperature and humidity measurement instrument also displays min., max. and mean values. While the pressure dew point probe measures the pressure dew point in compressed air, the humidity probe helps in measuring the dew point and water content of indoor air along with the psychrometric temperature, in addition to air humidity and air temperature.


• Measures air humidity, temperature, absolute pressure and dew point in compressed air

• Optional attachable probes

• Display of min, max and mean values

• Cyclical printing of readings at freely adjustable intervals

50 Items

Data sheet

Measuring Range (Temperature)
Temperature - NTC: -40 to +150 °C, Temperature - TC Type K (NiCr-Ni): -200 to +1370 °C
Accuracy (Temperature)
Temperature - NTC: ±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), Temperature - TC Type K (NiCr-Ni): ±0.3 °C (-60 to +60 °C), ±(0.2 °C + 0.3 % of mv) (Remaining Range)
Resolution (Temperature)
Temperature - NTC: 0.1 °C, Temperature - TC Type K (NiCr-Ni): 0.1 °C
Measuring Range ( Humidity)
0 to +100 %RH
Resolution (Humidity)
0.1 %RH
Measuring range (Absolute Pressure)
0 to 2000 hPa
Resolution (Absolute Pressure)
0.1 hPa
Alkali manganese, mignon, type AA
Operating Temperature
-20 to +50 °C
Storage Temperature
-30 to +70 °C
ABS / TPE / Metal
220 x 74 x 46 mm
428 g
2 years

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