QFA31...SIEMENS Room sensor for humidity (DC 0...10 V) and temperature (DC 0...10 V) for demanding requirements, with display

• Room sensors  QFA31…for relative humidity (high accuracy) and temperature
• Signal output DC 0...10 V / 4…20 mA for relative humidity and temperature•  Operating voltage AC 24 V / DC 13.5...35 V
• •Very high measuring accuracy across the entire measuring range
• •Capacitive humidity measurement
• •Function test
• •Range of use −40…+70 °C / 0…100 % r. h. with LCD display −25…+70 °C / 0…100 % r. h.

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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 %.

Examples:

•  Storage and production facilities in the paper, textile, pharmaceutical, food, chemical and electronics industry, etc.

•  Laboratories

•  Hospitals

•  Indoor swimming-pools

•  Computer and EDP centers

•  Greenhouses

•  With the AQF3100 accessory for outdoor use

   

Type reference	Temperature measuring range	Temperature signal output	Humidity measuring range	Humidity signal output	Operating voltage	Measured display
QFA3100	None	None	0...100 %	active, DC 0...10 V	AC 24 V or DC 13,5…35 V	No
QFA3101	None	None	0...100 %	active, 4…20 mA	DC 13,5…35 V	No
QFA3160	0...50 °C / − 40…+70 °C / − 35...+ 35 °C	active, DC 0...10 V	0...100 %	active, DC 0...10 V	AC 24 V or DC 13,5…35 V	No
QFA3160D	0...50 °C / − 40…+70 °C / − 35...+ 35 °C	active, DC 0...10 V	0...100 %	active, DC 0...10 V	AC 24 V or DC 13,5…35 V	Yes
QFA3171	0...50 °C / − 40…+70 °C / − 35...+ 35 °C	active, 4…20 mA	0...100 %	active, 4…20 mA	DC 13,5…35 V	No
QFA3171D	0...50 °C / − 40…+70 °C / − 35...+ 35 °C	active, 4…20 mA	0...100 %	active, 4…20 mA	DC 13,5…35 V	Yes