Ideal for demand control ventilation, this duct-mounted carbon dioxide transmitter measures 0 to 2000 ppm by single beam NDIR. In addition, outputs are 0 to 10 V DC and 4 to 20 mA, with 0-5 V DC field selectable on integral dip switches. Automatic baseline correction removes manual calibration in schools, offices and auditoriums.
Ideal for demand control ventilation, this duct-mounted carbon dioxide transmitter measures 0 to 2000 ppm by single beam NDIR. In addition, outputs are 0 to 10 V DC and 4 to 20 mA, with 0-5 V DC field selectable on integral dip switches. Automatic baseline correction removes manual calibration in schools, offices and auditoriums.
The ACI Carbon Dioxide Duct Series (A/CO2-D) monitors the carbon dioxide (CO2) levels in industrial, commercial, school, and office-type environments. The concentration of CO2 is a strong indication of the overall indoor air quality. The A/CO2 Series is based on a single beam, non-dispersive infrared technology and is a cost-efficient solution for measuring carbon dioxide levels for building climate control.
In addition, ABC software eliminates the need for manual calibration. Carbon Dioxide concentration is measured up to 2,000 ppm and is converted into proportional analog outputs. The factory default outputs are 0-10 V DC (Output 1) and 4-20 mA (Output 2), whereas 0-5 V DC is field selectable via integral dip switches. The A/CO2-D provides data which can be used in conjunction with a Building Automation System or Demand Control Ventilation to decrease energy consumption while creating a healthier indoor climate.
Applications
| Sensing Method | Technology: Single beam infrared sensing technology (NDIR) Method: Diffusion |
| Configuration | Duct |
| Measurement | Default range: 0 to 2000 ppm Extended ranges: Up to 10,000 ppm (factory set) Accuracy: ±40 ppm and ±3% of reading (at 15 to 35°C; 20 to 70% RH and 101.3 kPa) Extended range accuracy above 2000 ppm: ±30 ppm and ±5% of reading Pressure dependence: +1.6% reading per kPa (deviation from standard pressure 101.3 kPa) Response time: ≤2 minutes, diffusion Warm-up time: <1 Minute (at full specs <15 minutes) |
| Sensor Life and Calibration | Sensor life: >15 years (typical) Calibration: ABC algorithm (Automatic Baseline Correction) |
| Output | CO2 output signal: Output 1: 0-5 V DC or 0-10 V DC (Default); Output 2: 4-20 mA (500 Ohm load maximum) Fail safe: Polarity protected |
| Power Supply | Supply voltage: 24 V AC ±20%, 50/60 Hz (half-wave rectifier) | 16.5 to 40 V DC maximum Power consumption: 3 VA for 24 V AC, 3 W for 24 V DC (peak); <0.9 W (average) |
| Connections | Type: Screw terminal blocks Wire size: 16 AWG (1.31 mm²) to 26 AWG (0.129 mm²) Terminal block torque rating: 0.5 Nm (minimum); 0.6 Nm (maximum) |
| Housing | Duct box: IP65 rated, PC & ABS blend, Flammability Rating UL94V-0 Cover: Makrolon® 6555 plastic, Flammability Rating UL94V-0 Pipe: PC & ABS blend, Flammability Rating UL94V-0 |
| Operating Temperature Range | 32 to 122°F (0 to 50°C) |
| Operating Humidity Range | 0 to 95%, non-condensing |
| Agency Approvals | EMC Directive 2014/30/EC | RoHS Directive 2011/65/EU |
| Dimensions | 5.59 x 3.31 x 1.81" (142 x 84 x 46 mm) |
| Weight | 0.79 lbs (0.36 kg) |
| Sensing Method | Technology: Single beam infrared sensing technology (NDIR) Method: Diffusion |
| Configuration | Duct |
| Measurement | Default range: 0 to 2000 ppm Extended ranges: Up to 10,000 ppm (factory set) Accuracy: ±40 ppm and ±3% of reading (at 15 to 35°C; 20 to 70% RH and 101.3 kPa) Extended range accuracy above 2000 ppm: ±30 ppm and ±5% of reading Pressure dependence: +1.6% reading per kPa (deviation from standard pressure 101.3 kPa) Response time: ≤2 minutes, diffusion Warm-up time: <1 Minute (at full specs <15 minutes) |
| Sensor Life and Calibration | Sensor life: >15 years (typical) Calibration: ABC algorithm (Automatic Baseline Correction) |
| Output | CO2 output signal: Output 1: 0-5 V DC or 0-10 V DC (Default); Output 2: 4-20 mA (500 Ohm load maximum) Fail safe: Polarity protected |
| Power Supply | Supply voltage: 24 V AC ±20%, 50/60 Hz (half-wave rectifier) | 16.5 to 40 V DC maximum Power consumption: 3 VA for 24 V AC, 3 W for 24 V DC (peak); <0.9 W (average) |
| Connections | Type: Screw terminal blocks Wire size: 16 AWG (1.31 mm²) to 26 AWG (0.129 mm²) Terminal block torque rating: 0.5 Nm (minimum); 0.6 Nm (maximum) |
| Housing | Duct box: IP65 rated, PC & ABS blend, Flammability Rating UL94V-0 Cover: Makrolon® 6555 plastic, Flammability Rating UL94V-0 Pipe: PC & ABS blend, Flammability Rating UL94V-0 |
| Operating Temperature Range | 32 to 122°F (0 to 50°C) |
| Operating Humidity Range | 0 to 95%, non-condensing |
| Agency Approvals | EMC Directive 2014/30/EC | RoHS Directive 2011/65/EU |
| Dimensions | 5.59 x 3.31 x 1.81" (142 x 84 x 46 mm) |
| Weight | 0.79 lbs (0.36 kg) |
