You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument: the allrounder can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. The climate measuring instrument therefore supports you in adjusting and checking ventilation and air conditioning systems.

The testo 645 humidity/temperature measuring instrument automatically indicates the measurement parameters of relative humidity, absolute humidity, dew point, degree of humidity, enthalpy and temperature at the touch of a button.

Use the robust high-temperature and humidity probe for reliable measurement of temperature and relative humidity. As the probe can be used at temperatures up to +180 &deg;C, it also enables measurements to be taken in industrial exhaust air or in air-conditioning cabinets.

The robust high-temperature/humidity probe (with a corresponding measuring instrument) is suitable for reliably determining the temperature and relative humidity even at high temperatures (up to +180 &deg;C).

Robust high-temperature/humidity probe 

Robust high temperature/humidity probe

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Temperature - NTC	Measuring range -20 to +180 °C
	Accuracy ±0.5 °C (Remaining Range) ±0.4 °C (0.1 to +50 °C)
	Reaction time 30 s

Humidity - Capacitive	Measuring range 0 to +100 %RH
Humidity - Capacitive	Accuracy ±1.0 %RH (10 to 90 %RH at +15 ... +30 °C) ±2 %RH (Remaining Range) long-term stability: ±1 %RH / year ±0.03 %RH/K (k=1) *The sensor accuracy corresponds to the system accuracy.

General technical data	Diameter probe shaft 12 mm
General technical data	Length probe shaft 300 mm

Robust high-temperature/humidity probe (up to +180 °C)

Robust high-temperature/humidity probe (up to +180 °C)

Temperature - NTC

Temperature - NTC

Humidity - Capacitive

Humidity - Capacitive

General technical data

General technical data