Technical Data - S+S REGELTECHNIK AERASGARD ACO2-W Bedienungs- Und Montageanleitung

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AERASGARD ® ACO
The maintenance-free, microprocessor-controlled on-wall sensor AERASGARD
for detecting the CO content of the air within a range of 0...2000 ppm or 0...5000 ppm as well as the temperature within a range of –35...+80 °C. The
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measured values are converted into standard signals of 0 -10 V.
The maintenance-free microprocessor-controlled on-wall sensor AERASGARD
(can be deactivated via DIP switches) is used for detecting the overall room climate. It measures CO
quality (VOC) in one of three sensitivity levels that can be selected LOW / MEDIUM (default) / HIGH, temperature within a range of –35...+80 °C as well as
relative humidity of 0...100 % r.H. The measured values are converted into standard signals of 0 -10 V or 4...20 mA (selectable via DIP switches). As an option,
the measured values can be shown continuously in the illuminated display.
The relative humidity (% r.H.) quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature.
A digital, long-term stable sensor used as measuring element for relative air humidity and temperature guarantees exact measurement results. The CO
content of the air is measured using an optical NDIR sensor (non-dispersive infra-red technology). The detection range of the sensors is calibrated
for standard applications such as monitoring residential rooms and conference rooms. Room ventilation on an as-needed basis, improved well-being and
customer benefit, increased comfort as well as reduced operating costs through energy conservation are just some of the benefits of employing the
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AERASGARD CO sensor.
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The explanations above demonstrate that there are applications for CO
combination of both measurands. The crucial factor in this respect is that both of these measurands are not convertible into each other and derivations to
or from one another cannot be made. An NDIR CO
recognize CO molecules.
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TECHNICAL DATA

Voltage supply:
Power consumption:
Outputs:
Relay output:
HUMIDIT Y
Sensors:
Sensor protection:
Measuring range, humidity:
Operating range, humidity:
Deviation of humidity:
Output, humidity:
TEMPERATURE
Measuring range, temperature:
Operating range, temperature:
Temperature deviation:
Output, temperature:
AIR QUALIT Y (VOC)
Sensor, VOC:
Measuring range, VOC:
Output, VOC:
Measuring accuracy, VOC:
Service life:
CARBON DIOXIDE (CO )
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Sensor, CO :
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Measuring range, CO :
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Output, CO :
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Measuring accuracy, CO :
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Temperature dependence, CO
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- W ⁄ ALQ - CO - W ⁄ AFTM - CO
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measuring instrument measures selectively and cannot detect any VOC; a VOC mixed gas sensor cannot
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24 V AC ⁄ DC (± 10 %)
< 4.8 W ⁄ 24 V DC typical; < 6.8 VA ⁄ 24 V AC typical; peak current 200 mA
Ax x - SD 0 -10 V (fixed)
Ax x - W 0 -10 V or 4...20 mA, working resistance < 800 Ω
(selectable via DIP switches, selected variant applies for all outputs),
with offset potentiometer (± 10 % of the measuring range)
Ax x - SD without changeover contact
Ax x - W with potential-free changeover contact (24 V / 1 A)
(assignment selectable via DIP switches, switchpoint adjustable)
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
0...100 % r. H.
0...95 % r. H. (without dew formation)
typically ± 2.0 % (20...80 % r. H.) at +25 °C, otherwise ± 3.0 %
0 -10 V or 4...20 mA (selectable via DIP switches)
–35...+80 °C
–10...+60 °C
± 0.2 K at 25 °C
Ax x - SD 0 -10 V (fixed)
Ax x - W 0 -10 V or 4...20 mA (selectable via DIP switches)
VOC sensor (metal oxide) (VOC = volatile organic compounds),
with manual calibration (via zero button) and
with automatic calibration (can be deactivated via DIP switches)
0...100 % air quality; referred to calibrating gas;
multi-range switching (selectable via DIP switches)
VOC sensitivity low, medium, high
0 -10 V (0 V = clean air, 10 V = polluted air) or
4...20 mA (selectable via DIP switches,
switchpoint can be adjusted from 0...100 % of the output signal)
± 20 % of final value (referred to calibrating gas)
> 60 months (under normal load conditions)
optical NDIR sensor (non-dispersive infra-red technology),
with manual calibration (via zero button),
Ax x - SD with automatic calibration (fixed)
Ax x - W with automatic calibration (can be deactivated via DIP switches)
0...2000 ppm or 0...5000 ppm (selectable via DIP switches)
Ax x - SD 0 -10 V (fixed)
Ax x - W 0 -10 V or 4...20 mA (selectable via DIP switches)
± 30 ppm ± 3 % of measured value
: ± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C
(whichever is higher)
- W ⁄ AFTM - LQ - CO - W ⁄ ATM - CO
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® ACO - SD and ATM - CO
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®
AFTM - LQ - CO - W and ACO
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measurements, for VOC measure ments, but from our perspective, above all, for a
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- SD ⁄ ACO - SD
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- SD with automatic calibration (fixed) is used
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- W / ALQ - CO - W with automatic calibration
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within a range of 0...2000 ppm or 0...5000 ppm, air
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continued on next page!
Rev. 2018 - V22
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