G
AER
ASGARD
®
RCO
2
Connecting diagram
RCO
2
Connecting diagram
RCO
2
- Display
Schematic diagram
RCO
2
- Display
1
2
3
4
CO
2
Sensor
2000 5000 10000 aut
o
1 2 34
ON
Set CO
2
CO
2
range
2000 5000 10000 aut
o
1 2 34
ON
Set CO
2
CO
2
range
Fre
e
Output CO
2
c
ont
ent 0-10V
UB+ 24V A
C/DC
GND
Measuring
range selection
CO
2
Button and LED
for manual
CO
2
setting
1
2
3
4
5
6
7
8
UB+ 24V AC/DC
UB- 24V AC/DC
Free
Free
GND
Free
Free
Output CO
2
content in ppm 0-10V
1
2
3
UB- GND
UB+ supply voltage 24V AC/DC
Output CO
2
content in ppm 0-10V
The maintenance-free microprocessor-controlled AERASGARD
®
RCO
2
is used to
detect the CO
2
content in air. This sensor is optionally available with or without
display. The measurement signals from the CO
2
transmitter are converted into
standard signals of 0 -10 V. Optionally, this CO
2
measuring transducer can be
supplied with display or switching output.
Elegant enclosure made of plastic, with snap-on lid, base with 4-hole attachment for
installation on vertically or horizontally installed in-wall flush boxes, with predeter-
mined breaking point for on-wall cable entry. or in enclosures made of stainless steel
(top and bottom part are of stainless steel, the lid is screwed on), van dalism-secure
version e.g. for schools, military barracks, and public buildings.
The CO
2
content of air is determined by a dual beam NDIR sensor (non-dispersive
infrared technology). The detection range of this CO
2
sensor is calibrated for stand-
ard applications such as monitoring of residential rooms or con ference rooms. Room
ventilation on an as-needed basis, improvement of well-being and customer benefit,
increased comfort as well as a reduction of operating costs by energy conservation
are only some of the beneficial results of employing AERASGARD
®
RCO
2
sensors.
TECHNICAL DATA:
Power supply: ........................ 24 V AC ⁄ DC
Average power consumption: ....... < 3 VA at 24 V DC
CARBON DIOXIDE (CO
2
)
CO
2
sensor: ........................... optical, dual beam sensor (NDIR),
with automatic self-calibration,
non-dispersive infrared technology,
dual beam measuring method
Measuring range, CO
2
:.............
multi-range switching
(selectable via DIP switches)
0 … 2000 ppm; 0 … 5000 ppm; 0 … 10000 ppm
Output CO
2
: ........................... 0 -10 V
Measuring accuracy CO
2
: ......... ± 70 ppm plus 5 % of measured value
Pressure dependence: ............. ± 1.6 % ⁄ kPa (referred to standard pressure)
Long-term stability:................. ± 1 % of final value per year
Gas exchange: ........................ by diffusion
Warm-up time: ....................... ca. 1 hour
Ambient temperature: ............. 0 …+50 °C
Response time: ....................... ca. 1 minute
Electrical connection: .............. 0.14 - 1.5 mm
2
, via screw terminals on circuit
board
Enclosure: ............................. plastic, material ABS,
colour pure white (similar RAL 9010),
stainless steel enclosure optional
Dimensions: ........................... 98 x 106 x 32 mm (Frija II)
100 x 100 x 25 mm (stainless steel enclosure)
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 + A1 + A2,
EMC directive 2004 ⁄ 108 ⁄ EC,
low-voltage directive 73 ⁄ 23 ⁄ EEC
Optional: ............................... 8 - digit display,
cutout 36 x14 mm (W x H),
for displaying actual CO
2
content
6
7
# 14 -4018 (wie Katalog-
2014
, ab Seite 312)
ENDFASSUNG
| 23. 01. 2014 ⁄ PR
# 281
00 - 2014