RFTM-LQ-CO2-W

AERASGARD® RFTM-LQ-CO2-W

Item No. 1501-61B8-7301-200
EAN 4 251325 613369

Maintenance-free room sensor AERASGARD® RFTM - LQ - CO2 - W with active/switching output, automatic calibration (can be deactivated, in an elegant plastic housing 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 levels (low/medium/high), 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.

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 from building components, etc. With regard to the expected air contamination, low, medium or high VOC sensitivity can be selected.

365,93 € net
Voltage supply 24 V AC/ DC (± 10 %)
Power consumption < 4.4 W/ 24 V DC typical; < 6.4 VA/ 24 V AC typical;
peak current 200 mA
Sensors digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
Measuring range, humidity 0...100 % r. H.
Operating range, humidity 0...95 % r. H. (without dew formation)
Deviation of humidity typical ± 2 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3 %
Output, humidity 0 -10 V or 4...20 mA (selectable via DIP switches)
Measuring range, temperature 0...+ 50 °C (output equivalent to 0 -10 V or 4...20 mA)
Operating range, temperature 0...+50 °C
Temperature deviation typically ± 0.2 K at +25 °C
Output, temperature 0 -10 V or 4...20 mA (selectable via DIP switches)
Sensor, VOC
VOC sensor (metal oxide) (VOC = volatile organic compounds),
with manual calibration (via zero button),
with automatic calibration (can be deactivated via DIP switches)
Measuring range, VOC 0...100 % air quality; referred to calibrating gas;
multi-range switching (selectable via DIP switches)
VOC sensitivity low, medium, high
Output, VOC 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)
Measuring accuracy, VOC ± 20 % of final value (referred to calibrating gas)
Service life > 60 months (under normal load conditions)
depending on the type of loading and gas concentration
Measuring range, CO2 0...2000 ppm or 0...5000 ppm (selectable via DIP switches)
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)
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 higher)
Pressure dependence ± 0,13 %/ mm Hg
Gas exchange by diffusion
Relay output
with potential-free changeover contact (24 V / 1 A)
(assignment selectable via DIP switches, switchpoint adjustable)
Warm up time approx. 1 hour
Response time < 2 minutes
Output 0 -10 V or 4...20 mA (selectable via DIP switches,
selected variant applies for all outputs), working resistance < 800 Ω
Output
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)
Ambient temperature 0...+50 °C
Electrical connection 0.14 - 1.5 mm² via terminal screws
Housing plastic, material ABS,
colour pure white (similar to RAL 9010)
Dimensions 98 x 98 x 33 mm (Baldur 2)
Installation 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 cable entry
from top/ bottom in case of plain on-wall installation
Long-term stability < 2 % in 15 years
Protection class III (according to EN 60 730)
Protection type IP 30 (according to EN 60 529)
Standards CE conformity, electromagnetic compatibility
according to EN 61 326, EMC Directive 2014/ 30/ EU,
Low Voltage Directive 2014/ 35/ EU