Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
Installation and operating instructions
ATTENTION !
The minimum CO
concentration of outside air in leafy, hardly industrialised areas is approx. 350 ppm. The gas inter-exchange in the
2
sensor element happens by diffusion. Depending on the changes to the concentration and the flow velocity of the air surrounding the
sensor, the reaction of the device to the change of concentration may take place with a delay. It is essential to choose an installation
location for the device in which the air stream flows around the sensor. Otherwise the gas exchange may be considerably delayed
or prevented.
Automatic calibration of the carbon dioxide measurement – (default)
The automatic background logic is a self-calibrating mechanism that is suitable for use in applications in which the CO
regularly drops to fresh air level (350 - 400 ppm). This should typically happen attimes during which the rooms are unoccupied. The
sensor reaches its normal accuracy after 24 hours of continuous operation in an environment which has been exposed to a fresh
air supply of 400 ppm CO
days. The device needs continuous operating cycles of more than 24 hours to operate correctly
Manual calibration of carbon dioxide measurement
Sufficient fresh air (CO
content = 500 ppm) must be provided before and after the calibration procedure!
2
The calibration procedure is started by pressing the "ZERO" button (for approx. five seconds).
This is signalled via the flashing LED.
Then calibration takes place. During this phase, the LED is continuously active and a 600 second countdown runs.
The LED is deactivated after successful calibration.
Putting in operation
After switching on the device, a self-test and tempering period follows.
This procedure takes 30 - 50 minutes depending on ambient conditions.
Manual calibration can then be performed as an option.
Make sure that no harmful substances influence the calibration process and that the sensor is operated in fresh air.
Traffic light indicator
CO
content
LED 1
2
green
in ppm
350
20 %
416
40 %
482
60 %
548
80 %
614
100 %
680
746
812
878
944
1010
1076
1142
1208
1274
1340
1406
1472
1538
1604
1670
1736
1802
1868
1934
2000
3000
Once the aforementioned values have been reached, the respective
LED becomes active (with increasing luminosity of 20 %, 40 %, 60 %,
80 % and 100 %); LEDs that are already active continue to be illumi-
nated.
CO2 Monitor
. The deviation error remains minimal with at least 4 cases of sensor exposure to fresh air within 21
2
LED 2
LED 3
green
yellow
–
–
–
–
–
–
–
–
–
–
20 %
–
40 %
–
60 %
–
80 %
–
100 %
–
20 %
40 %
60 %
80 %
100 %
CO2 Monitor
LED 4
LED 5
yellow
red
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
20 %
–
40 %
–
60 %
–
80 %
–
100 %
–
20 %
40 %
60 %
80 %
100 %
8
LED
Recommendation
1
green :
no action required
2
green :
prompt airing recommended
3
yellow :
airing recommended
4
yellow :
airing required
5
red :
intensive airing necessary
concentration
2
CO2 Monitor
Publicité
Table des Matières
