Siemens QFM3171 Temperature-Humidity Duct Sensor


Siemens QFM3171 Temperature and humidity duct sensor can be use in ventilation and air conditioning plants where high accuracy and short response times for measuring relative humidity are required. The measuring range covers the entire humidity range of 0…100 %.

Applications: Storage and production facilities in the paper, textile, pharmaceutical, food, chemical and electronics industry, Laboratories, Hospitals, Computer and EDP centers Indoor swimming pools, Greenhouses etc.

In Stock

100 in stock

Product Description

Siemens QFM3171 Temperature and Humidity Sensor is used as a x control sensors in the supply or extract air x limit sensor for maximum limitation of supply air humidity after a steam humidifier x limit sensor, e.g. for measured value indication or for connection to a building automation and control system x sensor for enthalpy and absolute humidity, together with the SEZ220.


Operating voltage AC 24 V / DC 13.5…35 V

Signal output DC 0…10 V / 4…20 mA for relative humidity and temperature

Very high measuring accuracy across the entire measuring range

Function test

Capacitive humidity measurement

Additional Information

Weight 0.509 kg



Temperature Range

Humidity Range

Immersion length

Type of fixing


Protection class


Please Select Enclosure Dimensions

Sensing element, temperature

Connection, electrical

Signal output temperature

Time constant


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