AQS51/61-KAM COMBINED CO
2
-/TEMPERATURE DUCT SENSOR/CONTROLLER
EN0B-1023 GE02R0700 2
MODELS
Type Order Number
CO
2
and Temperature Duct
Sensor without LCD display
AQS51-KAM
CO
2
and Temperature Duct
Sensor with 4-digit LCD display
AQS61-KAM
ACCESSORIES
Description Order Number
Service Software; 3.5” Diskette
(for changing the sensing range, the
parametrization and the post calibration)
AQS-USP22
Testset
(consists of a portable gas generator for
zero-position calibration, pump, packing,
3m tube, battery and transformer)
AQS-F0005
RS Cable with built-in electronics and
adapters
AQS3/4 or
AQS31/41
TECHNICAL DATA
Power supply 24Vac ± 20%; 50/60Hz or 24Vdc ± 20%
Power consumption 2W
Sensor life expectancy >15 years
Maintenance interval 5 years
Self diagnostics Complete power/sensor/analog outputs internal test
Status LED indication Yellow = Maintenance required; Red = Relay activated
Power-up time ≤1 min
Ambient operating limits
- Temperature 0...50°C
General
- Humidity 0...95%rh (non condensing)
Operating principle Non-dispersive infrared (NDIR)
Gas sampling mode Diffusion and ∅3 mm gas inlet push-on barb
Response time 2 min (diffusion) or 10 sec (0.2 ltr/min gas flow)
Measurement range 0...3000 ppm
Converting range
0...2000 ppm = 0...10 Vdc (factory setting)
or 2...10 Vdc / 0...20 mA / 4...20 mA
Accuracy ±1% of measurement range, ±5% of reading
Pressure dependence
+1.58% of reading per kPa deviation from normal pressure
100 kPa
CO
2
- Measurement
Annual zero drift < ±1% of measurement range
Operating principle Thermistor
Measurement range −10...60°C
Converting range
0...50 °C = 0...10 Vdc (factory setting) or 2...10 Vdc / 0...20
mA / 4...20 mA
Temperature
Measurement
Accuracy ±0.2 K
Settings and configuration with
Service Software AQS-USP22
- Throttling range CO
2
100...800 ppm
- Throttling range temperature 1...10 K
P+
++
+I control
- Reset time adjustment ranges 2...500 sec (factory setting: 300 sec)
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