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Testo Humidity / Temperature Probe 4mm

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Meas. range 0 ... +40 °C 0 … 100 %rF

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Exc. GST

Product Description

Product description

The thin humidity/temperature probe is suitable for measuring temperature and relative humidity in storerooms and work rooms. The exceptionally small diameter of 4 mm also makes it possible to measure in small holes and narrow passageways. 

The thin humidity/temperature probe can be installed for long-term measurements. The probe can be installed using a PG gland or clamp, for example (not included in delivery).

The humidity sensor for measuring relative humidity is long-term stable, condensation-resistant and traceable to international humidity standards, such as ILAC, PTB and NIST. Thus, even after years of use you can still count on measurement results that are reliable and correct.

Temperature - NTC

Technical data 

Measuring range

0 to +40 °C


±0.3 °C

Humidity - Capacitive

Technical data 

Measuring range

0 to +100 %RH


±2 %RH at +25 °C (2 to +98 %RH)
±0.08 %RH/K

General technical data

Technical data 

Length probe shaft

4 mm


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