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AERASGARD

RCO2 - W ⁄ RCO2 - SD

Rev. 2021 - V35

Maintenance-free room sensor

AERASGARD

RCO2 - SD

with active output, automatic calibration (fixed), in an elegant plastic housing with snap-on

lid, for determining the CO2 content of the air (0...2000 ppm). The measuring transducer converts the measured values into a standard signal of 0 -10 V.
Maintenance-free room sensor

AERASGARD

RCO2 - W

with active/switching output, automatic calibration (can be deactivated), in an elegant

plastic housing with snap-on lid, optional with traffic light indicator (five coloured LEDs), for determining the CO2 content of the air (0...2000 ppm /
0...5000 ppm).  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. One sensor for every 30 m²  of
space is recommended.
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.

TECHNICAL DATA

Power supply:

24 V AC ⁄ DC (± 10 %)

Power consumption:

< 1.5 W ⁄ 24 V DC  typical;
< 2.9 VA ⁄ 24 V AC typical;
peak  current  200  mA

Sensor:

Optical NDIR sensor (non-dispersive infra-red technology), with manual calibration (via zero button),

RCO2 - SD

with automatic calibration ( fixed)

RCO2 -W

with automatic calibration (can be deactivated via DIP switches)

Measuring range:

RCO2 - SD

0...2000 ppm (fixed)

RCO2 - W

0...2000 ppm

0...5000 ppm (selectable via DIP switches)

Output:

RCO2 - SD

0 -10 V (fixed)

RCO2 - W

0 -10 V

4...20 mA, working resistance < 800 Ω

(selectable via DIP switches), with offset potentiometer (± 10 % of the measuring range)

Relay output:

RCO2 - SD

without changeover contact

RCO2 - W

with potential-free

changeover contact

(24 V / 1 A)

Measuring accuracy:

typically ± 30 ppm ± 3 % of measured value

Temperature dependence:

± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C (whichever is higher)

Pressure dependence:

± 0.13 % ⁄ mm Hg

Long-term stability:

< 2 % in 15 years

Gas exchange:

by diffusion

Ambient temperature:

0...+ 50 °C

Warm up time:

approx. 1 hour

Response time:

< 2 minutes

Electrical connection:

0.14 - 1.5 mm

, via screw terminals

Housing:

plastic, material ABS, colour pure white (similar to RAL 9010), stainless steel housing optional

V2A

(1.4301)

Dimensions:

85 x 85 x 27 mm (Baldur 1)
100 x 100 x 25 mm (stainless steel)

Installation:

wall mounting or on in-wall flush box, Ø 55 mm, base with 4-hole for mounting on vertically or horizontally
installed in-wall flush boxes for cable entry from the back, with predetermined breaking point for on-wall
cable entry from top ⁄ bottom in case of plain on-wall installation

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

Optional:

with traffic light indicator

(five coloured LEDs, see table) for displaying the CO2 concentration

with display

(see