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AERASGARD
®
KCO
The self-calibrating microprocessor-controlled AERASGARD
duct installation and is used to detect the CO
optionally available with or without display. The measurement signals are converted
into standard signals of 0 -10 V. Optionally, the CO
supplied with switching output.
The CO
content in air is determined by a NDIR sensor (non-dispersive infrared
2
technology). The detection range of this CO
cations such as monitoring of residential rooms or conference rooms. Room venti-
lation on an as-needed basis, improvement of well-being and customer benefit,
increased comfort as well as a reduction of operating costs by energy conservation
are only some of the beneficial results of employing AERASGARD
A measuring system based on NDIR (non-dispersive infrared sensor) technology for
CO
measurement consists of a light source and a receptor. A certain range of
2
wavelengths of light radiated off by the source is damped respectively absorbed by
CO
molecules in the measured section. That damping is detected by the receptor.
2
TECHNICAL DATA:
Power supply: .................................. 24 V AC ⁄ DC
Sensor: ............................................. optical sensor (NDIR)
Measuring range: ........................... multi-range switching
Output: ............................................. 0 -10 V or with potential-free changeover
Measuring accuracy CO
:............. ± 100 ppm plus 5 % of measured value
2
Pressure dependence: .................. < ± 0,5 % of measured value ⁄ kPa
Temperature dependence: ........... < 5 ppm ⁄ K (referred to 20 °C)
Long-term stability: ....................... ± 1 % of final value per year
Service life: ...................................... > 12 years
Gas exchange: ................................. by diffusion
Ambient temperature: .................. 0 ...+50 °C
Electrical connection: .................... 0.14 - 1.5 mm
Enclosure: ........................................ plastic, polyamide, 30 % glass-globe-reinforced,
Dimensions: ..................................... 108 x 73.5 x 70 mm
Cable gland: ..................................... M16, including strain relief
Protective tube: ............................. metal, Ø 20 mm,
Process connection: ..................... by mounting flange,
Protection class: ........................... III (according to EN 60 730)
Protection type: ............................. IP 65 (according to EN 60 529)
Standards: ...................................... CE-conformity,
Optional: ........................................... 8 - digit display,
2
®
KCO
content in air. This CO
2
measuring transducer can be
2
sensor is calibrated for standard appli-
2
with automatic self-calibration,
non-dispersive infrared technology,
including atmospheric pressure compensation
(selectable via DIP switches)
0 ... 2000 ppm; 0 ... 5000 ppm; 0 ... 10000 ppm
contact (24 V)
at compensated versions (standard),
otherwise ± 1,6 % of measured value ⁄ kPa
(referred to standard pressure)
2
,
via terminals on circuit board
with quick-locking screws,
colour pure white (similar RAL 9010)
nominal length NL = 190 mm
plastic (included in the scope of delivery),
galvanised steel optional
electromagnetic compatibility
according to EN 61 326 + A1 + A2,
EMC directive 2004 ⁄ 108 ⁄ EC
cutout 36 x14 mm (W x H),
for displaying actual CO
content
2
is designed for
Connecting diagram
2
sensor is
2
1
2
3
Connecting diagram
1
®
KCO
sensors.
2
2
3
5
6
7
Schematic diagram
UB- GND
UB+ supply voltage 24V AC/DC
Output 0-10V CO
-content n ppm
2
UB- GND
UB+ supply voltage 24V AC/DC
Output 0-10V CO
-content n ppm
2
Normally open
contact
Breaker
Sensor plug
CO
range
2
Measuring range
selection CO
ON
Button and LED
for manual CO
setting
1 2 3 4
Atmospheric
pressure sensor
Switching
threshold adjustment
(KCO
-W)
2
7
6
5
3
2
min. max.
KCO
2
KCO
- W
2
KCO
- W
2
KCO
2
2
2
ATM
1
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