G
AERASGARD
®
ACO
2
- SD - TYR2
Rev. 2017 - V11 GB
The maintenance-free, microprocessor-controlled
AERASGARD
®
ACO
2
- SD - TYR2
or
ATM - CO
2
- SD - TYR2
is designed for on-wall installation and
is used to detect CO
2
content as well as gas temperature. The measurement signals are converted to standard signals of 0 -10 V.
The CO
2
content of the air is measured using an optical NDIR sensor (non-dispersive infra-red technology). The detection range of the CO
2
sensor is
calibrated for standard applications such as monitoring residential rooms and conference rooms. Room ventilation on an as-needed basis, improved
well-being and customer benefit, increased comfort as well as reduced operating costs through energy conservation are just some of the benefits of
employing AERASGARD
®
CO
2
sensors.
A measuring system based on NDIR (non-dispersive infra-red technology) for CO
2
measurement consists of a light source and a receptor. A certain
range of wavelengths of light radiated by the source is damped and absorbed by CO
2
molecules in the measured section. This damping is detected by
the receptor.
TECHNICAL DATA
Voltage supply:
24 V AC ⁄ DC
Average power consumption:
< 3 VA at 24 V DC
CARBON DIOXIDE (CO
2
)
Sensor, CO
2
:
optical NDIR sensor
(non-dispersive infra-red technology)
dual-beam measuring system
with automatic calibration
Measuring range, CO
2
:
multi-range switching
(selectable via DIP switches)
0...2000 ppm ⁄ 0...5000 ppm
Output, CO
2
:
0 -10 V
Measuring accuracy, CO
2
:
up to 2000 ppm: ± 70 ppm plus 5 % of measured value
up to 5000 ppm: ± 70 ppm plus 10 % of measured value
Temperature dependence:
approx. 10 ppm ⁄ K at +25 °C
Pressure dependence:
± 1.5 % of measured value ⁄ kPa
(referred to standard pressure)
Long-term stability:
± 2 % of final value ⁄ year
Gas exchange:
by diffusion
TEMPERATURE
Measuring range, temperature:
0...+50 °C
Output, temperature:
0 -10 V
Warm up time:
approx. 1 hour
Ambient temperature:
+10...+50 °C
Humidity:
< 95 % r. H., non-precipitating air
Response time:
approx. 2 minutes
Electrical connection:
0.14 - 1.5 mm
2
, via screw terminals
Enclosure:
plastic, material polyamide,
30 % glass-globe reinforced,
with quick-locking screws
(slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016)
Dimensions:
126 x 90 x 50 mm (Tyr 2)
Cable gland:
M 16 x 1.5; including strain relief,
exchangeable
Process connection:
via screws
Protection class:
III (according to EN 60 730)
Protection type:
IP 65 (according to EN 60 529)
Standards:
CE conformity,
electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU
ACCESSORIES
WS-03
Weather and sun protection,
200 x 180 x 150 mm, stainless steel
