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CO₂ Duct Sensor
NSA-CO2-DUCT

Part Numbers

NSA-A/CO2-DUCT

The Carrier Carbon Dioxide Duct Series 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 NSA-A/CO2-DUCT 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.

Applications

Schools, Office Buildings, Auditoriums, Gymnasiums, Shopping Malls, Theatres, Demand Control Ventilation & Economizers

Supply Voltage: 24 VAC +/-20%, 50/60 Hz (half-wave rectifier) | 16.5-40 VDC maximum
Power Consumption: 3 VA for 24 VAC, 3W for 24 VDC (peak); <0.9W (average)
Sensing Technology: Single beam infrared sensing technology (NDIR)
Sensing Method: Diffusion
Measurement Range Default: 0 to 2,000 ppm
Extended CO2 Ranges: Up to 10,000 ppm (factory set)
Extended Range Accuracy: +/- 30 ppm and +/- 5% of reading
CO2 Output Signal: Output 1: 0-5 VDC or 0-10 VDC (Default) | Output 2: 4-20 mA (500 Ohm load maximum)
Fail Safe: Polarity protected
CO2 Accuracy1: +/- 40 ppm +/- 3% of reading (@ 15-35°C; 20-70% RH and 101.3 kPa)
Pressure Dependence: + 1.6% reading per kPa (deviation from standard pressure 101.3 kPa)
Response Time: 2 minutes, diffusion
Warm-Up Time: < 1 minute (@ full specs < 15 minutes)
Operating Temperature Range: 32 to 122ºF (0 to 50ºC)
Operating Humidity Range: 0 to 95%, non-condensing
Enclosure: Duct Box: PC & ABS blend, Flammability Rating UL94V-0
Cover: Makrolon® 6555 plastic, Flammability Rating UL94V-0
Pipe: PC & ABS blend, Flammability Rating UL94V-0
Sensor Life2: > 15 years (typical)
Calibration3: ABC algorithm (Automatic Baseline Correction)
Product Dimensions: (H) 5.59” (142 mm) x (W) 3.31” (84 mm) x (D) 1.81” (46 mm)
Product Weight: 0.79 lbs (0.36 kg)
Agency Approvals: EMC Directive 2014/30/EC | RoHS Directive 2011/65/EU

11Accuracy is de-red after minimum three (3) ABC periods (1 period = 8 days) of continuous operations.
2In normal indoor air quality (IAQ) applications | Corrosive environments are excluded.
3Building CO₂ must drop to 400 ppm same time during the week for ABC to work properly. If the building is occupied 24 hours / day, ABC must be turned off.

Supply Voltage: 24 VAC +/-20%, 50/60 Hz (half-wave rectifier) | 16.5-40 VDC maximum
Power Consumption: 3 VA for 24 VAC, 3W for 24 VDC (peak); <0.9W (average)
Sensing Technology: Single beam infrared sensing technology (NDIR)
Sensing Method: Diffusion
Measurement Range Default: 0 to 2,000 ppm
Extended CO2 Ranges: Up to 10,000 ppm (factory set)
Extended Range Accuracy: +/- 30 ppm and +/- 5% of reading
CO2 Output Signal: Output 1: 0-5 VDC or 0-10 VDC (Default) | Output 2: 4-20 mA (500 Ohm load maximum)
Fail Safe: Polarity protected
CO2 Accuracy1: +/- 40 ppm +/- 3% of reading (@ 15-35°C; 20-70% RH and 101.3 kPa)
Pressure Dependence: + 1.6% reading per kPa (deviation from standard pressure 101.3 kPa)
Response Time: 2 minutes, diffusion
Warm-Up Time: < 1 minute (@ full specs < 15 minutes)
Operating Temperature Range: 32 to 122ºF (0 to 50ºC)
Operating Humidity Range: 0 to 95%, non-condensing
Enclosure: Duct Box: PC & ABS blend, Flammability Rating UL94V-0
Cover: Makrolon® 6555 plastic, Flammability Rating UL94V-0
Pipe: PC & ABS blend, Flammability Rating UL94V-0
Sensor Life2: > 15 years (typical)
Calibration3: ABC algorithm (Automatic Baseline Correction)
Product Dimensions: (H) 5.59” (142 mm) x (W) 3.31” (84 mm) x (D) 1.81” (46 mm)
Product Weight: 0.79 lbs (0.36 kg)
Agency Approvals: EMC Directive 2014/30/EC | RoHS Directive 2011/65/EU

11Accuracy is de-red after minimum three (3) ABC periods (1 period = 8 days) of continuous operations.
2In normal indoor air quality (IAQ) applications | Corrosive environments are excluded.
3Building CO₂ must drop to 400 ppm same time during the week for ABC to work properly. If the building is occupied 24 hours / day, ABC must be turned off.