10
G
AERASGARD
®
RPS - SD ⁄ RFTM - PS - xx
Rev. 2021 - V11
Maintenance-free room sensor
AERASGARD
®
RPS - SD
with active output, in an elegant plastic housing with snap-on lid, base with 4-hole attach-
ment, for detecting the fine dust content (0...500 µg/m
3
). The measuring transducer converts the measurand into a standard signal of 0 -10 V (fixed).
Maintenance-free, multifunctional room sensor
AERASGARD
®
RFTM - PS
- CO2 - W
with active/switching output, automatic calibration, in an elegant
plastic housing with snap-on lid, base with 4-hole attachment, optionally with/without display, for detection of measurands air humidity (0...100 % r.H.),
temperature (0...+50°C), fine dust (PM) (0...50 / 100 / 300 / 500 µg/m
3
) and CO2
content (0...2000 / 5000 ppm). The measuring transducer converts
the measurand into a standard signal of 0 -10 V or 4...20 mA (switchable).
Use just one device to monitor and control the entire indoor climate effectively. This enables energy-saving room ventilation on an as-needed basis,
thereby reducing operating costs and improving well-being. It is used in offices, hotels, convention centres, apartments, shops, etc. 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 content of the air is measured using
an optical
NDIR sensor
(non-dispersive infra-red technology). An optical
particulate sensor
precisely detects
fine dust (PM)
of the size category 0.3
to 10 micrometers. The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible. (except for particulate sensor)
TECHNICAL DATA
Power supply:
24 V AC ⁄ DC (± 10 %)
Power consumption:
RPS
- SD
typically < 1.5 W ⁄ 24 V DC; < 2.9 VA ⁄ 24 V AC
RFTM - PS - CO2 - W
typically < 4.4 W ⁄ 24 V DC; < 6.4 VA ⁄ 24 V AC; peak current 200 mA
Output:
RPS
- SD
0 -10 V (fixed)
RFTM - PS - CO2 - W
0 -10 V
or
4...20 mA, working resistance < 800 Ω
(selectable via DIP switches, selected version applies
uniformly
to all outputs),
with offset potentiometer (± 10 % of measuring range)
Relay output:
RPS
- SD
without changeover contact
RFTM - PS - CO2 - W
with potential-free
changeover contact
(24 V / 1 A)
(assignment selectable via DIP switches, switch point can be set)
HUMIDITY
Sensor (RH / °C):
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
Measuring range (RH):
0…100 % r. H.
Output (RH):
0 -10 V or 4...20 mA (selectable via DIP switches)
Deviation (RH): typically
± 2.0 %
(20...80 % r. H.) at +25 °C, otherwise ± 3.0 %
TEMPERATURE
Measuring range (°C):
0...+ 50 °C
Output (°C):
0 -10 V or 4...20 mA (selectable via DIP switches)
Deviation (°C):
typically ± 0.2 K at +25 °C
FINE DUST (PM)
Sensor (PM):
optical
fine-dust sensor
(PM = particulate matter),
particulate sensor with laser- and soiling-resistant technology
Measuring range (PM):
multi-range switching (selectable via DIP switches)
0...50, 0...100, 0...300 or 0...500 µg/m
3
Output (PM):
RPS
- SD
0 -10 V (fixed)
RFTM - PS - CO2 - W
0 -10 V or 4...20 mA (selectable via DIP switches)
Particle size (PM):
PM
2.5
(0.3...2.5 µm);
PM
10
(0.3...10 µm)
Measuring accuracy (PM):
typically ± 10 µg/m
3
(± 10 % of measured value) at PM 2.5
typically ± 25 µg/m
3
(± 25 % of measured value) at PM 10
Long-term stability (PM):
± 1.25 µg/m
3
(± 1.25 % of measured value/year)
Service life (PM):
> 10 years
CARBON DIOXIDE (CO2)
Sensor (CO2):
Optical
NDIR sensor
(non-dispersive infra-red technology),
with manual calibration (via zero button),
with automatic calibration (can be deactivated via DIP switches)
Measuring range (CO2):
0...2000 ppm or 0...5000 ppm (selectable via DIP switches)
Output (CO2):
0 -10 V or 4...20 mA (selectable via DIP switches)
Measuring accuracy (CO2):
typically ± 30 ppm (± 3 % of measured value)
Temperature dependence (CO2):
± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C (whichever is greater)
Pressure dependence (CO2):
± 0.13 % ⁄ mm Hg
Long-term stability (CO2):
< 2 % in 15 years
Gas exchange (CO2):
Diffusion
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