CE1N1857en
06.06.2005
Siemens Building Technologies
HVAC Products
1
857
Room Sensors
QFA20…
for relative humidity and temperature
•
Operating voltage AC 24 V or DC 13.5…35 V
•
Signal output DC 0...10 V for relative humidity
•
Signal output DC 0...10 V or LG-Ni 1000 or T1 for temperature
•
Accuracy of
±
3 % r.h. within comfort range
•
Range of use
−
15…
+
50 °C / 0…95 % r. h. (non-condensing)
Use
In ventilating and air conditioning plants to acquire
•
relative humidity and
•
temperature
in rooms.
The QFA20… is used as a
•
control sensor and
•
measuring sensor for building automation and control systems or indicating units.
Type summary
Type
reference
Temperature
measuring range
Temperature
signal output
Humidity
measuring range
Humidity
signal output
Operating voltage
QFA2000
None
None
0...100 %
Active, DC 0...10 V
AC 24 V or DC 13.5…35 V
QFA2020
0...50 °C
Passive, LG-Ni 1000
0...100 %
Active, DC 0...10 V
AC 24 V or DC 13.5…35 V
QFA2040
0...50 °C
Passive, T1
0...100 %
Active, DC 0...10 V
AC 24 V or DC 13.5…35 V
QFA2060
0...50 °C /
−
35...
+
3 5 °C
Active, DC 0...10 V
0...100 %
Active, DC 0...10 V
AC 24 V or DC 13.5…35 V
.
.
.
.
185
7P0
1