Duct sensors QFM21..
for relative humidity and temperature

· Operating voltage AC 24 V / DC 13.5...35 V
· Signal output DC 0...10 V / 4…20 mA for relative humidity
· Signal output DC 0...10 V / 4…20 mA / LG-Ni 1000 for temperature
· Measuring accuracy ±3 % r. h. within the comfort range
· Range of use -15…+60 °C / 0…95 % r. h. (non-condensing)

 

 

eference
Temperature
measuring range
Temperature
signal output
Humidity
measuring range
Humidity
signal output
Operating voltage
QFM2100 None None 0...100 % active, DC 0...10 V AC 24 V or DC 13.5…35 V
QFM2101 None None 0...100 % active, 4…20 mA DC 13.5…35 V
QFM2120 -35...+5 0 °C passive, LG-Ni 1000 0...100 % active, DC 0...10 V AC 24 V or DC 13.5…35 V
QFM2160 0...50 °C / - 35...+3 5 °C
or - 40...+7 0 °C
active, DC 0...10 V 0...100 % active, DC 0...10 V AC 24 V or DC 13.5…35 V
QFM2171 0...50 °C / - 35...+3 5 °C
or - 40...+7 0 °C
active, 4…20 mA 0...100 % active, 4…20 mA DC 13.5…35 V

 

Technical data
Operating voltage AC 24 V ±20 % or DC13.5…35 V (SELV)
or
AC/DC 24 V class 2 (US)
Frequency 50 /60 Hz at AC 24 V
External supply line protection Fuse slow max. 10 A
or
Circuit breaker max. 13 A
Characteristic B, C, D according to EN 60898
or
Power source with current limitation of max. 10 A
Power consumption £1 VA
Perm. cable lengths See data sheet of the device
handling the signal
Range of use 0…95 % r. h. (non-condensing)
Measuring range 0…100 % r. h.