QFM2171 Siemens Duct sensor for humidity (DC 4...20 mA) and temperature (DC 4...20 mA)

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The Siemens QFM2171 is a Sensor that is utilised in HVAC systems and a tool that provides Humidity and Temperature readings.

This type of Sensor is used to measure values within ducts.

Find the best-priced Siemens Sensor that is compatible with your system at iacs.

If you have questions about size or installation, consult the Siemens custom datasheet above or send an email to iacs to get personalised guidance.

temperature and relative humidity duct sensors QFM21.

The capacitive humidity sensing element of the sensor, whose electrical capacitance alters as the relative humidity does, measures the relative humidity in the air duct.

The detecting element of the sensor, which changes electrical resistance as the temperature changes, measures the temperature in the air duct.