Table Des Matières; Aerasgard Aco; Measuring Range - S+S Regeltechnik AERASGARD ACO2 Notice D'instruction

G
®
AERASGARD ACO
The maintenance-free microprocessor-controlled AERASGARD
detect the CO content in air. This sensor is optionally available with or without
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display. The measurement signals are converted into standard signals of 0 -10 V.
Optionally, this CO measuring trans ducer can be supplied with switching output.
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The CO content of air is determined by a dual beam NDIR sensor (non-dispersive
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infrared technology). The detection range of this CO
standard applications such as monitoring of residential rooms or conference
rooms. Room ventil ation 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 ACO sensors.
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A measuring system based on NDIR technology for CO
of a light source and a receptor. A certain range of wavelengths of light radiated
off by the source is damped respectively absorbed by CO
measured section. That damping is detected by the receptor.
TECHNICAL DATA:
Power supply: ........................ 24 V AC ⁄ DC
Average power consumption: ....... < 3 VA at 24 V DC
Sensor:................................. optical, dual beam sensor (NDIR),
Measuring range: .................... multi-range switching
Output: ................................. 0 -10 V or
Measuring accuracy CO : ......... ± 70 ppm plus 5 % of measured value
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Pressure dependence: ............. < ± 0,5 % of measured value ⁄ kPa at
Temperature dependence:......... < 5 ppm ⁄ K (referred to 20 °C)
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
Enclosure: ............................. plastic, polyamide, 30 % glass-globe-reinforced,
Dimensions: ........................... 108 x 70 x 73.5 mm (Thor II)
Cable gland: ........................... M 16 x 1.5 ; including strain relief
Protective tube: ..................... metal, Ø 20 mm,
Protection class: .................... III (according to EN 60 730)
Protection type: ..................... IP 65 (according to EN 60 529)
Standards: ............................ CE-conformity,
Optional: ............................... 8 - digit display, cutout 36 x14 mm (W x H),
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®
sensor is calibrated for
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measurement consists
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molecules in the
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with automatic self-calibration,
non-dispersive infrared technology,
dual beam measuring method,
including atmospheric pressure compensation
(selectable via DIP switches)
0 ... 2000 ppm; 0 ... 5000 ppm; 0 ... 10000 ppm
with potential-free changeover contact (24 V)
compensated versions (standard),
otherwise ± 1,6 % of measured value ⁄ kPa
(referred to standard pressure)
2 ,
via screw terminals on circuit board
with quick-locking screws,
colour pure white (similar RAL 9010)
nominal length NL = 40 mm
electromagnetic compatibility
according to EN 61 326 + A1 + A2,
EMC directive 2004 ⁄ 108 ⁄ EC
for displaying actual CO content
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ACO is used to
2 Connecting diagram
Connecting diagram
Schematic diagram
1 UB- GND
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UB+ supply voltage 24V AC/DC
3 Output 0-10V CO -content n ppm
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1 UB- GND
2 UB+ supply voltage 24V AC/DC
3 Output 0-10V CO -content n ppm
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5 Normally
open contact
6
7 Breaker
Sensor plug
CO range
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Measuring range
selection CO
ON
Button and LED
for manual CO
setting
1 2 3 4
Atmospheric
pressure sensor
Switching
threshold adjustment
(ACO -W)
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7 6 5
3
min. max.
ACO
2
ACO - W
2
changeover
(24 V)
ACO
2
ACO - W
2
2
2
ATM
2 1