Technical Data - S+S Regeltechnik RCO2-W Notice D'instruction

G
®
AERASGARD RCO2 - W ⁄ RLQ - CO2 - W ⁄ RFTM - LQ - CO2 - W ⁄ RTM - CO2 - SD
Maintenance-free room sensor AERASGARD
lid, for determining the CO2 content of the air (0...2000 ppm) and the temperature (0...+50°C). The measuring transducer converts the measured
values into a standard signal of 0 -10 V.
Maintenance-free room sensor AERASGARD
with snap-on lid, optionally with/without display, for determining the CO2 content of the air (0...2000 ppm/0...5000 ppm), the quality in three VOC
sensitivity (0...100 % VOC), the temperature (0...+50°C) as well as the relative air humidity (0...100 % r.H). The measuring transducer converts the
measured values into a standard signal of 0 -10 V or 4...20 mA (switchable).
The sensor is used in offices, hotels, convention centres, apartments, shops, etc. for the purpose of evaluating the indoor climate. This enables
energy-saving room ventilation on an as-needed basis, thereby reducing operating costs and improving well-being. We recommend one sensor for
every 30 m² of space.
A long-term stable, digital humidity and temperature sensor guarantees exact measurement results. The CO2 measurement is performed using an
optical NDIR sensor (non-dispersive infra-red technology). The detection range is calibrated for standard applications such as monitoring residential
rooms and conference rooms. The air quality is detected by a VOC sensor (mixed gas sensor for volatile organic substances). This sensor
determines the loading of the room air due to contaminated gases such as cigarette smoke, body perspiration, exhaled breathing air, solvent
vapours, emissions, etc. As an alternative, use IAQ categories (from excellent to unhealthy) following the guidelines of the German Federal Environ-
mental Agency to assess the room air.

TECHNICAL DATA

Voltage supply:
Power consumption:
Outputs:
Relay output:
HUMIDITY
Sensor (RH / °C):
Measuring range (RH):
Output (RH):
Deviation (RH):
TEMPERATURE
Measuring range (°C):
Deviation (°C):
Output (°C):
AIR QUALIT Y ( VOC )
Sensor (VOC):
Measuring range (VOC):
Output (VOC):
Measuring accuracy (VOC) :
Service life (VOC):
CARBON DIOXIDE ( CO2 )
Sensor (CO2):
Measuring range (CO2):
Output (CO2):
Measuring accuracy (CO2):
Temperature dependence (CO2):
Pressure dependence (CO2):
Long-term stability (CO2):
Gas exchange (CO2):
® RTM - CO2 - SD with active output, automatic calibration, in an elegant plastic housing with snap-on
® RFTM - LQ - CO2 - W with active/switching output, automatic calibration, in an elegant plastic housing
24 V AC ⁄ DC (± 10 %)
RCO2 - W ⁄ RTM - CO2 - SD :
< 1.5 W ⁄ 24 V DC typical; < 2.9 VA ⁄ 24 V AC typical; peak current 200 mA
RLQ - CO2 - W ⁄ RFTM - LQ - CO2 - W :
< 4.4 W ⁄ 24 V DC typical; < 6.4 VA ⁄ 24 V AC typical; peak current 200 mA
RTM - CO2 - SD 0 -10 V (fixed)
Rx x - CO2 - 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)
RTM - CO2 - SD without changeover contact
Rx x - CO2 - 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
0...100 % r. H.
0 -10 V or 4...20 mA (selectable via DIP switches)
typically ± 2.0 % (20...80 % r. H.) bei +25 °C, sonst ± 3.0 %
0...+ 50 °C
typically ± 0.2 K bei +25 °C
RTM - CO2 - SD 0 -10 V (fixed)
Rx x - CO2 - 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 automatic calibration (permanently active)
0...100 % air quality; referred to calibrating gas;
multi-range switching (selectable via DIP switches)
VOC sensitivities (low/medium/high) or IAQ category (Indoor Air Quality)
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)
typically ± 20 % of final value (referred to calibrating gas)
> 60 months (under normal load conditions) depending on the type of loading and gas concentration
optical NDIR sensor (non-dispersive infra-red technology),
with manual calibration (via zero button),
RTM - CO2 - SD
with automatic calibration (fixed)
Rx x - CO2 - W with automatic calibration (can be deactivated via DIP switches)
RTM - CO2 - SD 0...2000 ppm (fixed)
Rx x - CO2 - W 0...2000 ppm or 0...5000 ppm (selectable via DIP switches)
RTM - CO2 - SD
0 -10 V (fixed)
Rx x - CO2 - W 0 -10 V or 4...20 mA (selectable via DIP switchesr)
typically ± 30 ppm (± 3 % of measured value)
± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C (whichever is higher)
± 0.13 % ⁄ mm Hg
< 2 % in 15 years
by diffusion
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Rev. 2021 - V31
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