Capacitive relative humidity and temperature sensor
QFA41 series SIEMENS Building Technologies

QFA41.. - certified room sensor

The QFA41.. sensor is used in ventilation and air conditioning plants requiring very high accuracy and reliability for measuring relative humidity and temperature where calibration certificates are needed.

Range of use:

*Version: r.h.; r.h./T
*Humidity: 0...100%
*Temperature: -40...70 °C
*Supply: AC 24 V / DC 13.5...35 V
*Output: DC 0...10 V / DC 4...20 mA
*Protection class: IP65

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Flow, Pressure and Level Measurement
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- Pressure switches, vacuum switches

Temperature and Humidity Measurement
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- Thermostats
- Humidity sensors, transmitters
- Anemometers, thermoanemometer

Optical and Acoustic Measurement
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Analytical Instrumentation
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Automation
- Temperature controllers and regulators
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Switches and Relays
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Valves
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Building Security and Machine Safety
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- Fire suppression systems