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datasheetdetails
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<< | < | AX-GS-CD-T81G - Room/Space (CO2) Transmitter, Analogue Output, Optional RH
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The AX-GS-CD-T81G Carbon Dioxide Transmitter uses NonDispersive Infrared (NDIR) technology to measure CO2 levels and provides an analogue output (voltage or current) corresponding to the measured value. The maximum level canbe set to 2000 ppm or 5000 ppm using the on-board dipswitches. The optional multicolour LCD version can display CO2 levels in ppm and change backlight colour based on the measured CO2 value. It also has a version with additional Relative Humidity and Temperature outputs. Applications: Indoor air quality monitoring and demand controlled ventilation systems where there is no full-time occupation. |
Product Features
| • Solid state sensing element
• 24V AC/DC supply voltage
• No calibration required
| • Digital display of CO2 levels in ppm (-MCD versions)
• Voltage or current output
• Visual alarm indication with backlight colour switch (-MCD)
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Power supply
| 24Vac/dc ±15%
| Power consumption
| 0.75W Typical. 1.5W Maximum
| Carbon Dioxide Sensor
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| Output range
| 0-2000ppm/5000ppm selectable
| Sensing method
| Non Dispersive Infrared
| Sampling type
| Diffusion
| Typical coverage area
| 15m radius or 700sq.m
| Accuracy
| ±30ppm ±3% of reading
| Stability
| <2% of FS over life of sensor
| Temperature dependence
| 5ppm per °C or 0.5%of reading per °C whichever is greater
| Sensor life expectancy
| 15 years typical
| Calibration interval
| Calibration not required. See ABC Logic
| Signal update interval
| Every 5 seconds
| Response time (t90)
| < 3minutes
| Warm up time
| 10 minutes
| Passive Temperature Output (optional)
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| Sensor type
| See order codes for available passive sensor types
| Accuracy
| ±0.5°C typical
| RH&T Analog Outputs (optional)
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| Sensor Type
| Capacitive
| Output range
| RH
| Accuracy RH
| ±2.5% typical (20 to 80% RH at 25°C) Temperature
| Response time
| 15 seconds @25°C, but dependent on airflow
| LCD Display (optional)
| 4 digits 9mm high
| Backlight color
| Red(>1500ppm)Orange(1000 to 1500ppm)/Green (<1000ppm)
| Analogue Outputs
| 0-10Vdc / 4-20mA selectable using dipswitch
| Maximum load
| 600 Ohms max for 4-20mA output. 5mA for Voltage output.
| Enclosure
| ABS UL94-5VA compliant . Cool white colour.
| Dimensions, weight and ingress
| 87 x 82 x 27mm, 75g, IP30
| Operating conditions
| -10°C to 50°C, 0 to 95%RH non-condensing
| Storage conditions
| -20°C to 70°C
| Compliance
| CE, RoHS
| Country of origin
| United Kingdom
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| AX-GS-CD-T81G.pdf / Room CO2 transmitter, 0-2000/5000ppm, 0-10V/4-20mA Output with Multicolour LCD Display |  |
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