S+S Regeltechnik AERASGARD RFTM- LQ-PS-CO2-Modbus Notice D'instruction page 14

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AERASGARD ® RFTM - LQ - PS - CO2 - Modbus
Multifunctional indoor climate sensor AERASGARD
plastic housing with snap-on lid, base with 4-hole attachment, optionally with ⁄ without display, type variant RFTM - CO2 - Modbus optionally with ⁄
without setpoint potentiometer. The room sensor is used to detect the measurands air humidity (0...100 % r.H.), temperature (0...+50°C), air quality
(0...100 % VOC), fine dust (PM) (0...1000 µg/m) and CO2 content (0...5000 ppm) as well as a room control unit (% setpoint). 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 operat-
ing costs and improving well-being. It is used in offices, hotels, convention centres, apartments, shops, etc.
A long-term stable, digital humidity and temperature sensor guarantees exact measurement results. The air quality is determined based on a (VOC)
mixed gas sensor. The CO2 content of the air is measured using an optical NDIR sensor (non-dispersive infra-red technology). An optical fine dust
sensor precisely detects particulate (PM) of the size category 0.3 to 10 micrometres. The sensor is factory-calibrated; an environmental precision
adjustment by an expert is possible. One sensor for every 30 m² of room area is recommended.
Modbus sensor with galvanically separated RS485 Modbus interface, selectable bus termination resistance, DIP switches for setting the bus param-
eters and bus address in the currentless state, LEDs for telegram status display and two-line display (illuminated; with customised programming in
the 7-segment and dot-matrix range).
TECHNICAL DATA
Power supply:
Power consumption:
Data points:
HUMIDIT Y & TEMPERATURE
Sensor (RH / °C):
Deviation (RH):
Deviation (°C):
AIR QUALIT Y ( VOC )
Sensor (VOC):
Measuring range (VOC):
Measuring accuracy (VOC):
Service life (VOC):
FINE DUST ( PM )
Sensor (PM):
Measuring range (PM):
Particle size (PM):
Measuring accuracy (PM):
Long-term stability (PM):
Service life (PM):
CARBON DIOXIDE ( CO2 )
Sensor (CO2):
Measuring range (CO2):
Measuring accuracy (CO2):
Temperature
dependence (CO2):
Pressure dependence (CO2):
Long-term stability (CO2):
Gas exchange (CO2):
Ambient temperature:
Permitted humidity:
Warm up time:
Response time:
Electrical connection:
Housing:
Dimensions:
Mounting:
Protection class:
Protection type:
Standards:
Optional:
® RFTM - LQ - PS - CO2 - Modbus (maximum expansion level) with Modbus connection, in an elegant
24 V AC ⁄ DC (± 10 %)
typically < 4.4 W ⁄ 24 V DC; < 6.4 VA ⁄ 24 V AC; peak current 200 mA
temperature [°C], relative humidity [% r.H.], air quality (VOC) [%,ppb],
fine dust (PM) [µg/m 3 ], carbon dioxide (CO2) [ppm], setpoint potentiometer [%]
digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability
typically ± 2.0 % (20...80 % r. H.) at +25 °C, otherwise ± 3.0 %
typically ± 0.2 K at +25 °C
VOC sensor (metal oxide) with automatic calibration
(VOC = volatile organic compounds)
0...100 % air quality; with reference to calibration gas;
multi-range switching VOC sensitivity low, medium, high
typically ± 20 % final value (with reference to the calibration gas)
> 60 months (under normal load conditions)
optical particulate sensor (PM = particulate matter),
fine-dust sensor with laser- and soiling-resistant technology
0...1000 µg/m 3
PM 2.5 (0.3...2.5 µm); PM 10 (0.3...10 µm)
(± 10 % of measured value) at PM 2.5
typically ± 10 µg/m 3
typically ± 25 µg/m 3 (± 25 % of measured value) at PM 10
± 1.25 µg/m 3 (± 1.25 % of measured value/year)
> 10 years
optical NDIR sensor (non-dispersive infra-red technology)
with automatic and manual calibration
0...5000 ppm
typically ± 30 ppm (± 3 % of measured value)
± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C
(whichever is greater)
± 0.13 % ⁄ mm Hg
< 2 % in 15 years
Diffusion
0...+ 50 °C
0...95 % r. H. (non-precipitating air)
approx. 1 hour
< 2 minutes
0.2 - 1.5 mm 2 , via push-in terminal
plastic, material ABS, colour pure white (similar to RAL 9010)
98 x 98 x 33 mm (Baldur 2)
wall mounting or on in-wall flush box, Ø 55 mm, base with 4 holes, for attachment
to vertically or horizontally installed in-wall flush boxes for rear cable entry,
with predetermined breaking point for top/bottom cable entry for surface-mounted installation
III (according to EN 60 730)
IP 30 (according to EN 60 529)
CE conformity, electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU, Low Voltage Directive 2014 ⁄ 35 ⁄ EU
Display with illumination, 2-line, cutout approx. 36 x 15 mm (W x H),
to display actual humidity, actual temperature, air quality, of the fine-dust and CO2 content (cyclic)
or a selectable parameter (static) or an individually programmable display value
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Rev. 2022 - V31