Data Sheet for Product
4/12
Siemens Duct air quality sensors QPM11.., QPM21.. CE1N1962en
Smart Infrastructure 2020-03-03
X2
Max
10
8
6
4
2
0
0
400
800
1200
1600
2000
1961D02_0
1
[ppm CO ]
2
0
20
40
50
80
1
00
[% VOC]
[mA] [V]
20
16.8
13.6
10.4
7.2
4
The sensor acquires the relative humidity in the air duct with a capacitive humidity
sensing element whose capacitance changes as a function of the relative humidity.
An electronic measuring circuit converts the signal from the sensing element to a con-
tinuous DC 0...10 V or DC 0...5 V or 4...20 mA signal, corresponding to a relative hu-
midity range of 0...100 %.
The sensor acquires the temperature in the air duct with a sensing element whose
electrical resistance changes as a function of the temperature.
The change is converted to an active DC 0...10 V or DC 0...5 V or 4...20 mA output
signal (
0...50 °C or - 35...+35 °C).
The sensor measures the room temperature using a sensing element where electrical
resistance changes with the temperature of the ambient air.
The sensing element is on the device's rear side and connected at the appropriate
connection terminals.
The following sensing elements are included with the device:
- LG-Ni1000
- Pt1000
- Pt100
- NTC 10kOhm
LG-Ni 1000 Characteristic curve: Accuracy:
Ventilation demand
di
a
gram (output
X2
)
Relative humidity
(QPM2162 and
QPM2162D
)
Temperature active
(
QPM216…)
Temperature passive
(
QPM2180
)
Sensing element