S+S Regeltechnik AERASGARD RCO2-W Notice D'instructions page 10

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®
AERASGARD RCO
The maintenance-free microprocessor-controlled room sensor AERASGARD
CO content of the air within a range of 0...2000 ppm and the temperature within a range of 0...+50°C. The measured values are converted into
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standard signals of 0 -10 V.
The maintenance-free microprocessor-controlled room 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 0...+50°C as well as
relative humidity of 0...100 % r.H. The measured values are converted into standard signals of 0 -10 V oder 4...20 mA (selectable via DIP switches). As an
option, the measured values can be shown continuously in the illuminated display.
Elegant enclosure made of plastic, with snap-on lid, base with 4-hole attachment, for installation on vertically or horizontally installed in-wall flush boxes,
with predetermined breaking point for on-wall cable entry.
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 air
quality is determined based on a (VOC) gas mixture sensor. The CO
technology).
TECHNICAL DATA
Voltage supply:
Power consumption:
Outputs:
Relay output:
HUMIDITY
Sensors:
Measuring range, humidity:
Operating range, humidity:
Deviation, 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 ⁄ RLQ - CO - W ⁄ RFTM - LQ - CO
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24 V AC ⁄ DC (± 10 %)
RCO - W ⁄ RTM - CO - SD :
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< 1.5 W ⁄ 24 V DC typical; < 2.9 VA ⁄ 24 V AC typical; peak current 200 mA
RLQ - CO - W ⁄ RFTM - LQ - CO
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< 4.4 W ⁄ 24 V DC typical; < 6.4 VA ⁄ 24 V AC typical; peak current 200 mA
RTM - CO - SD 0 -10 V (fixed)
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Rx x - CO - W 0 -10 V or 4...20 mA, working resistance < 800 Ω
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(selectable via DIP switches, selected variant applies for all outputs),
with offset potentiometer (± 10 % of the measuring range)
RTM - CO - SD without changeover contact
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Rx x - CO - W with potential-free changeover contact (24 V / 1 A)
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(assignment selectable via DIP switches, switchpoint adjustable)
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
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)
0...+ 50 °C
0...+ 50 °C
± 0.2 K at +25 °C
RTM - CO - SD 0 -10 V (fixed)
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Rx x - CO - W 0 -10 V or 4...20 mA (selectable via DIP switches)
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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),
RTM - CO - SD with automatic calibration (fixed)
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Rx x - CO - W with automatic calibration (can be deactivated via DIP switches)
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RTM - CO - SD 0...2000 ppm (fixed)
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Rx x - CO - W 0...2000 ppm or 0...5000 ppm (selectable via DIP switches)
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RTM - CO - SD 0 -10 V (fixed)
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Rx x - CO - W 0 -10 V or 4...20 mA (selectable via DIP switches)
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± 30 ppm ± 3 % of measured value
: ± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C
(whichever is higher)
- W ⁄ RTM - CO
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® RTM - CO - SD with automatic calibration (fixed) is used for detecting the
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®
RFTM - LQ - CO - W and RCO
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content of the air is measured using an optical NDIR sensor (non-dispersive infra-red
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- W :
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10
- SD
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- W / RLQ - 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 - V27 GB