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Sensors


Temperature - Humidity

Outside sensor

Siemens_logo_RGB_72dpi.jpg
The QFA31.. is for 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%. With the accessory AQF3100 the QFA31.. is for outdoor use.
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

Technical Specification


Temperature - HumidityQFA31-D.jpg

QFA31.. – high-quality room sensors

Siemens_logo_RGB_72dpi.jpg
The QFA31.. is for 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%. The sensor is also available with LCD display.

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

Technical Specification