Room humidity, temperature and CO2 sensor AERASGARD® RFTM-CO2-W

Measured variables

output

Display

Item no. 1501-61B6-7301-200

EAN 4251325613321

Product group: WG02

Room humidity, temperature, air quality and CO2 sensor AERASGARD® RFTM-CO2 / RFTM-LQ-CO2

Maintenance-free AERASGARD® RFTM - CO2 - W room air quality transmitter with active/switching output, automatic calibration (can be deactivated), in an elegant plastic housing with snap-on cover, optionally with/without display, for determining the CO2 content of the air (0...2000 ppm/0...5000 ppm), the air quality in three VOC sensitivity levels (low/medium/high), the temperature (0...+50°C) as well as the relative air humidity (0…100% RH). The measuring transducer converts the measured values into a standard signal of 0-10 V or 4...20 mA (switchable).

The air quality is detected by a VOC sensor (mixed gas sensor for volatile organic substances). This sensor device determines the load of contaminated gases in the room air, such as from cigarette smoke, body perspiration, exhaled breathing air, solvent vapours, emissions from building components, etc. Low, medium or high VOC sensitivity can be selected depending on the expected air contamination.

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

Data points

temperature, relative humidity, carbon dioxide (CO2)

Measuring range, humidity

0...100 % RH

Operating range, humidity

0...95 % RH (without dew formation)

Deviation of humidity

typical ± 2 % RH (20…80 % RH ); 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)

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)

Measuring range

0...2000 ppm / 0...5000 ppm

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)

Protection type housing

IP 30

Standards

CE conformity, electromagnetic compatibility
according to EN 61 326, EMC Directive 2014/ 30/ EU,
Low Voltage Directive 2014/ 35/ EU

CE - Declaration of Conformity

UKCA declaration of conformity