Testo 635-1 temperature and humidity measuring instrument

Order-Nr.  0560 6351

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, meaning 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
The testo 635-1 temperature and humidity measuring instrument has two probe inputs for plug-in probes with cables. In addition, the Testo 635 1 handheld thermo hygrometer can receive readings by radio from up to three further temperature or humidity probes via wireless measurement data transfer and display them clearly.

You need the optional radio module as well as radio probes for radio measurement data transfer. It is simply plugged into the testo 635-1 handheld hygrometer and can be retrofitted at any time. The radio signal between the radio probe and the measuring instrument is effective over a distance of up to 20 meters.

Robust, practical, and easy to handle In addition to readings, the testo 635-1 temperature and humidity measuring instrument also displays min., max., and mean values.

When the pressure dew point probe is attached, it can measure the pressure dew point in compressed air. If a humidity probe is attached to the measuring instrument, it can also measure the dew point and water content of indoor air along with the psychrometric temperature, in addition to air humidity and air temperature.

The temperature and humidity measuring instrument is really easy to use and the menu guidance is user-friendly. The display with its illumination function means the readings are easily legible even when visibility is poor. A solid housing reliably protects the measuring instrument from impacts.

Testo 635-1 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 dew point
• Calculates dew point and dew point distance
• Cyclical printing of readings once a minute, for example

Testo 635-1 specification:

• Weight: 428 g
• Dimensions : 220 x 74 x 46 mm
• Operating temperature: -20 to +50 °C
• Battery life: 200 h
• Storage temperature: -30 to +70 °C
• Measuring range Absolute Pressure : 0 to 2000 hPa
• Measuring range Humidity – Capacitive :0 to +100 %RH
• Measuring range Temperature – TC Type K: -200 to +1370 °C
• Measuring range Temperature – NTC: -40 to +150 °C