Siemens Symaro QAA2890/WI Manual page 2

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
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
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The Symaro
measurement (NDIR) with automatic baseline calibration.
The resulting wireless digital output signal (0...5000) is proportional to the CO
ambient air, corresponding to a CO
Automatic baseline calibration (ABC) of CO
The ABC function for CO
detect a room that is regularly unoccupied but linked to the outdoor air exchange, and
perform automatic calibration periodically if ABC is activated.
ABC is activated at 180 h interval. ABC can be disabled if not needed (i.e. no exchange of
outdoor air).
Mechanical design
Wireless 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
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Siemens
Smart Infrastructure
concentrations
2
concentration
TM
air quality sensor acquires the CO
measurement baseline is 400 ppm (fresh air). The sensor can
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concentration by infrared absorption
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concentration range of 0...5000 ppm.
2
measurement
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content of the
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A6V12871702_en--_a
2023-03-14