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Use
Sensors acquire the following values in ventilation and air conditioning plants:
●
Temperature
●
Relative humidity
●
CO
Wireless communication KNX IoT over Thread exchanges sensor data with controllers, tools
or the cloud over a wireless Thread network.
Functions
Relative humidity
The sensor acquires relative humidity via a digital capacitive relative humidity sensor with
bandgap temperature sensor.
The electronic measuring circuit converts the sensor element's humidity signal to a wireless
digital signal (0...10000), corresponding to a relative humidity range of 0...100 %.
Temperature
The sensor acquires the temperature via a digital humidity and temperature sensor.
The temperature signal from sensing element is converted to wireless digital signal
(0...10000), corresponding to a temperature range of 0...50 ° C.
CO
2
The Symaro
measurement (NDIR).
The resulting wireless digital output signal (0...5000) is proportional to the CO
ambient air, corresponding to a CO
Mechanical design
Thread room sensors are designed for wall mounting, flush mounting and tape mounting.
They are suitable for use with most commercially available recessed conduit boxes.
The device has 2 parts:
●
Plastic housing with electronic components
●
Mounting plate
Type summary
Product
number
QAA2890/WI
QFA2890/WI
QPA2892/WI
2
Siemens
Smart Infrastructure
concentrations
2
concentration
TM
air quality sensor acquires the CO
SSN NO.
Temperature
0...50 ℃
S55720-S550
S55720-S551
0...50 ℃
0...50 ℃
S55720-S552
concentration by infrared absorption
2
concentration range of 0...5000 ppm.
2
Humidity
measuring
measuring
range
range
---
0...100 %
0...100 %
2
CO
Operating
2
measuring
voltage
range
DC 4.5 V (3 x
---
1.5 V AAA
alkaline
batteries)
---
DC 4.5 V (3 x
1.5 V AAA
alkaline
batteries)
DC 3 V (2 x
0...5000 ppm
1.5 V AA
alkaline
batteries)
A6V12871702_en--_a
content of the
Output signal
Wireless
digital signal
Wireless
digital signal
Wireless
digital signal
2022-05-10
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