S+S Regeltechnik AERASGARD RFTM- LQ-PS-CO2-Modbus Operating Instructions, Mounting & Installation 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 operating 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 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. One sensor for every 30 m² of space is recommended.
Modbus sensor with galvanically separated RS485 Modbus interface, selectable bus termination resistance, DIP switches for setting the bus parameters
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 fine-dust sensor (PM = particulate matter),
particulate 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)
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
± 1.25 µg/m 3 (± 1.25 % of measured value/year)
> 10 years
optical NDIR sensor (non-dispersive infra-red technology)
with manual calibration (via zero button)
with automatic calibration (can be deactivated via Modbus)
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. 2021 - V30