2 calibration points: 11.3 and 75.3&nbsp;%RH at +25&deg;C

2 calibration points: 11.3 and 75.3&nbsp;%RH at +25&nbsp;&deg;C

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The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity and dew point – in compressed air as well. State-of-the-art technology and a large selection of probes, which are available as an option, enable this wide variety of measuring possibilities.

The testo 635-2 temperature and moisture meter allows you to carry out temperature and moisture measurements on a variety of different materials, surfaces and environments. This is made possible due to leading-edge technology and a wide selection of optionally available sensors.

The U-value is the most important value for proving the heat loss of a building. With the testo 635-2 thermohygrometer and compatible accessories from the U-value set, determining the U-value is now easier than ever.

Use the compact professional humidity module to carry out wireless humidity/temperature measurement with the appropriate radio handle and measuring instrument (both available to order separately).

The humidity module can be attached to various Testo radio handles. It enables a high level of accuracy thanks to the precise humidity sensor.<br />
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Wireless handle (0554 0189) and wireless module (0554 0188) are required to use a radio probe, and these can be ordered optionally.

Temperature - NTC	Measuring range -20 to +70 °C
	Accuracy ±0,3 °C
	Resolution 0,1 °C

Humidity - Capacitive	Measuring range 0 to +100 %RH
	Accuracy ±2 %RH (+2 to +98 %RH)
	Resolution 0,1 %RH

Compact professional humidity module

Compact professional humidity module

Temperature - NTC

Temperature - NTC

Humidity - Capacitive

Humidity - Capacitive

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