GS-CD-T51S Carbon Dioxide (CO2) Switch

The GS-CD-T51S is a cost-effective wall mounted CO2 switch for ventilation control. The unit incorporates an inituitive Visual Level Indicator for Carbon Dioxide Thresholds to maintain air quality in enclosed spaces (e.g. school classrooms, offices, gymnasiums, theatres etc.).

Mains Rated Relay (230V @ 8A) output but will also work as Volt-Free Contact output.

• High Accuracy & Stability
• Intuitive 6 LED Display
• 15 year recommended calibration interval
• Wall mounting
• Mains Powered
• Monitors the range 0 to 2000ppm as standard

• Sensor Type: Non-dispersive infrared (NDIR), Gold plated optics
• Measurement Range: 0-2000ppm (Factory calibrated)
• Calibration Interval: Not Required (see ABC Software)
• Measurement Drift: better than +/- 20ppm
• Stability: Self-calibrating, <2% of FS over life of sensor (15 year typical)
• Temperature Dependence: 0.2% FS per °C
• Signal Update: every 4 seconds
• Warm-up time: 10 minutes for maximum accuracy
• Power Supply: 90 to 260Vac 50-400Hz @ < 1.5W average 
• Operating Conditions: 0°C to +50°C Temp, 0 to 95% RH, non condensing
• On-Off-Manual Switch: 
• LED Displays:
• Blue LED On  <800ppm  (indicates over ventillation)
  Green LED On  800-1199ppm  (CO2 levels within acceptable limits)
  Yellow LED On  1200-1499ppm (CO2 levels are high - indicates under-ventillation)
  Red LED On  > 1500ppm (CO2 levels are very high - indicates ventillation required
  Two Red LED's On > 2000ppm (CO2 levels are extremely high - indicates ventillation required)
• Housing: Flame-retardant ABS
• Dimensions: 87 mm x 82 mm x 27 mm (h x w x d), 75g, IP20
• Outputs: Switched Live SPDT Relay 230 V 8A resistive  (or Volt-free)
  Contacts isolated to LVD2006/95/EC.
• Output Switch Levels: User selectable at 1000 ppm (default) or 1500 ppm with hysterisis of 300ppm
   

Datasheet