It has a permanently mounted sensor probe with flexible probe tube (125 mm) which makes it excellent for control measurements in boreholes and ventilation ducts. The instrument measures relative humidity 5–95%RH and temperature 0…+50 °C, and calculates dew point in the range -20 to +50 °C. The built-in testo sensor provides reliable measurement results with high long-term stability. The display can be angled for easy reading and the rotatable protective cap protects the sensor during storage.
Approved according to RBK manual for sampling and borehole measurement
Technical data: accuracy ±3%RH, ±0.5 °C | resolution 0.1%RH, 0.1 °C | battery 3×AAA (1000 h)

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