Data Sheet for Product

5/10
Siem ens Indoor air quality sensors QPA10.., QPA20.. CE1N1961en
Building Technologies 2018-05-01
Characteristic curve: Accuracy:
1000
10000
100000
-10 0 10 20 30 40 50
60 [°C]
J
R
[W]
1745D07
-1.00
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
-10 0 10 20 30 40
50
60
DJ [K]
[°C]
J
1745D06
R Resistance in Ohm
J Temperature in Celsius
DJ Temperature differential in Kelvin
Mechanical design
The units are designed for wall mounting and can be deployed with most types of
commercially available recessed conduit boxes. The cables can be introduced from the
rear (concealed wiring), from below or above (surface-run wires) through knockout
openings.
The units consist of 2 major sections: Casing and base plate. Both snap together but
can be detached again.
The measuring circuit, the sensing elements, and the setting elements are located on a
printed circuit board in the unit.
The mounting base carries the connection terminals.
X120
R1
Range 1
R2
Range 2
R3
Range 3
X130
O1
4...20 mA
O2
0...10 V
O3
0...5 V
Display
Temperatur
e unit
Delivery condition
2.5 V / 5 V
12 mA
X1 X2 X3
0 V / 0 V
4 mA
5 V / 10 V
20 mA
0V / 0V
4 mA
5 V / 10 V
20 mA
2.5 V / 5 V
12 mA
5 V / 10 V
20 mA
2.5 V / 5 V
12 mA
0 V / 0 V
4 mA
2.5 V / 5 V
12 mA
2.5 V / 5 V
12 mA
2.5 V / 5 V
12 mA
mA-Test
0...10 V
V-Test
0...5 V
V-Test
The setting elements can be accessed after removing the mounting base.
Meaning of the different jumper positions:
· For the CO
2
measuring range:
Jumper in the mid position (R2) = 0…2000 ppm (factory setting)
· For VOC:
– Jumper in the upper position (R1) = VOC time constant "slow"
– Jumper in the mid position (R2) = VOC time constant "normal"
(factory setting)
– Jumper in the lower position (R3) = VOC time constant "fast"
· For the temperature measuring range:
– Jumper in the upper position (R1) = -35...+35 °C
NTC 10k
Key
Setting elements…
… for the measuring range
with
QPA2000
with
QPA1000,
QPA2002 and
QPA2002D
with
QPA206…