10
DIN
Deutsches Institut für Normung
VDE
Verband der Elektrotechnik
(German Institute for Standardisation)
Elektronik Informationstechnik e.V
(Association for Electrical,
Electronic & Information
Technologies).
U
r
Rated voltage in volts (V)
I
r
Rated current in
amperes (A)
Pr
Rated input power in watts (W)
CO
2
Carbon dioxide
ppm
parts per million
α
Potentiometer setting angle
m+NN
Metres above sea level in metres (m)
in degrees (°) 0° – 270°
Abbreviations and symbols used
The CO
2
air quality sensor described below
measures the concentration of carbon dioxide
(CO
2
) in room air by means of an optical two-
channel measurement system.
The CO
2
air quality sensor uses an LED "traffic
light" display (green, amber, red) to indicate
when the quality of room air rises above or
falls below internally selected threshold values.
In addition, 3 beeps each lasting 1s sound
when changing from green to amber, and a
continuous audible signal lasting 5s sounds
when changing from amber to red.
When room air is fresh, you can compensate
for the effect of atmospheric pressure (weather
and / or altitude above sea level) simply by
pressing a button.
However, the air quality sensor is not intended
for use as a measuring device or as part of a
gas warning or other safety system. The sen-
sor is designed for operation in dry rooms at a
temperature of 5°C to +40°C and is protected
against medium-sized solid bodies by an IP20
rated enclosure for "surface" mounting.
All work, such as assembly work, installation
and testing, must be carried out by skilled per-
sonnel.
How it works
Locally applicable assembly and installation
provisions, guidelines and regulations must be
observed. In particular, this applies to:
■
VDE guidelines and regulations,
e.g. DIN VDE 0100
■
Guidelines and regulations issued by the in-
dustrial employers' liability insurance associ-
ations, e.g. accident prevention regulations
for electrical installations.
No liability can be accepted for improper appli-
cation, assembly and installation or for the use
of non-genuine accessory parts!
Regulations to be followed
11
Function
Range
Measuring range
300ppm – 2000 ppm CO
2
Accuracy
± 100 ppm (± weather-induced fluctuations of approx. 40 ppm)
Pressure range
In any weather and up to 2000m above sea level
(manual altitude compensation)
Temperature (storage)
-40°C to +85°C
Temperature (operating)
5°C to 40°C
Response time (T90)
3 min
Sensor life
> 15 years
Rated input power
Pr, Ir
2.8 W max. approx. 12mA at 240V ac; 50 – 60 Hz
2.3 W max. approx. 20mA at 110V ac; 50 – 60 Hz
Supply voltage Ur
110 – 240V, 50/60 Hz,
installation using screw terminals on the enclosure baseplate
Protection class
II, doubly insulated
Type of enclosure
IP 20
CO
2
air quality sensor
Room version (surface mounting).
EMC conformity
DIN EN 61326-1:1997
Electrical safety
EN60335-1
Controls
- Potentiometer
Altitude calibration (m above sea level)
(the ppm threshold setting shown on the scale is not
activated on the Aircheck "Signal" model)
- Button
for fresh-air calibration / altitude setting
Display
LED "traffic light" display
LED "traffic light" ("green" < 1000ppm;
"amber" 1001 – 1500ppm; "red" > 1500ppm)
(3 visible LED’s in enclosure cap)
colour changes at 200ppm below the above-stated
incrementation thresholds to ensure that reliable colour
transitions are achieved at the switching points.
(no beeping, no flashing LED)
Enclosure
ABS white
Technical specifications
One-time adjustment of air pressure in relation to altitude at the site of installation
(0 to 2000 m above sea level).
BDAL_AirCheck FH_DE-GB 09.01.2006 14:41 Uhr Seite 11
