S&P AIRSENS RF CO2 Mode D'emploi page 14

Basic connectivity features
Addressing: 1
Transmission speed: 19200
EN
Parity: EVEN
Mode: RTU
Electrical interface: RS-485
Connector type: wiring D0 – D1 – Common
CALIBRATION / RESET
Automatic calibration
AIRSENS intelligent IAQ sensor incorporates a self-calibration algorithm that
allows adaptation to the environment. This adaptation could be prolonged for two
weeks until the reading is fine-tuned, and there may be periods of time with LED
diffuser in red. During this period it is necessary to keep the equipment powered
so as not to interrupt the self-calibration process.
Manual calibration AIRSENS CO2
For those situations where automatic calibration is an impediment, a forced ma-
nual calibration can be performed. To do this, press the button (see Fig.1) for
more than 10 seconds until the light guide flashes intermittently in green. During
the next 10 minutes of flashing it is essential that there is no occupation in the
area, windows remain open and/or the ventilation system at maximum perfor-
mance in order to obtain the best CO2 concentration possible. After 10 minutes,
the light guide will stop flashing and the AIRSENS CO2 will consider that the CO2
level in that moment is 450ppm.
Reset
Manual way to start a reset process is disconnecting power supply, wait at least
30 seconds and power again the electronic control. It is also possible to do re-
motely via Modbus communication using General reset (register number 3).
TECHNICAL DATA
Power supply voltage ........................... 100-240Vac – 50/60Hz
Protection against electric shock ........ Class II
Installation type required ..................... Tipo X
Maximum consumption ....................... 1W
Maximum current ................................ 0,01A
Output................................................... 0-10Vdc, 2-10Vdc, maximum current 20mA
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