Asense CO₂ Duct Sensor
NSA-ASENSE-CO2-DUCT
Part Numbers
NSA-ASENSE-D-LCD-REL
NSA-ASENSE-D-REL
The ASENSE Duct series with IP65 Rated Enclosure 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 ASENSE Series is based on a single beam non-dispersive infrared technology and is a cost-optimized solution for the climate control of buildings and other processes. In addition, ABC software eliminates the need for manual calibration. The ASENSE Series measures the CO₂ concentration in the ambient air up to 2,000 ppm and converts the data into an analog output.
Applications
Commercial Office Buildings, Hospitals & Schools
Supply Voltage: | 24 VAC/VDC ±20%; 50/60 Hz, 10.5 to 40 VDC maximum (Half-wave rectified) |
Power Consumption: | <1W |
Wiring Connections: | 0.00232 in² (1.5 mm²) screw terminals |
Operating Environment: | Residential, commercial and industrial spaces |
Operating Temperature: | 32ºF to 122ºF (0ºC to 50ºC) |
Operating RH: | 0 to 85% RH Non-condensing |
Warm-Up Time: | <5 minutes (@ full specs 15 minutes) |
Accuracy: | CO₂1: ±30 ppm ±3% of reading | Temperature: ±1.8ºF (1ºC) |
Repeatability: | ±20 ppm ±1% of measured value |
Annual Zero Drift: | <± 0.3% of measurement range |
Operating Pressure: | +1.6% per 0.145 psi (1 kPa) deviation from normal pressure, (1 Atmosphere = 14.7 psi (1.013 KPa)) |
Sensing Method: | Single beam Non-dispersive Infrared (NDIR) |
Sensor Life2: | >15 years |
Response Time (T1/e): | <10 seconds @ 30 cc/minutes flow rate, <3 minutes diffusion time |
Sensing Range: | CO₂: 0 to 2000 ppm | Temperature: -4 to 140ºF (-20 to 60ºC) |
Extended CO₂ Ranges: | 2,000 to 10,000 ppm (factory set or programming cable required) |
Extended Range Accuracy: | +/- 30 ppm and +/- 5% of reading |
Coverage Area: | 7500 sq. ft. maximum |
Self-Diagnostics: | Complete function check, yellow LED; LCD error indication (display model only) |
Display (Optional): | 4 digits, 7 segments LCD with ppm indicator |
Calibration3: | Senseair ABC algorithm (Automatic Baseline Correction) |
Outputs: | Output 1 (CO₂): 0/2 to 10V, 0/4 to 20 mA, 0 to 2000 ppm
Output 2 (Temperature): 0/2 to 10V, 0/4 to 20 mA, 32 to 122ºF (0 to 50ºC) |
Relay (Optional): | Output 3: N.O. or N.C. rated 0.5A @ 125 VAC; 1A @ 24 VDC |
Relay Trip Point4: | 1000 ppm (factory set) |
Relay Deadband/Hysteresis: | 100 ppm (factory set) |
Relay Durability: | Mechanical: 5,000,000 operations minimum (at 36,000 operations/hr)
Electrical: 100,000 operations minimum (under rated load, at 1,800 operations/hr) |
Storage: | NSA-ASENSE-D: -40 to 158ºF (-40 to 70ºC)
NSA-ASENSE-D-LCD: -4 to 122ºF (-20 to 50ºC) 0 to 85% RH 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 |
Product Dimensions: | (H) 5.95" (151.9 mm) x (W) 3.33" (84.6 mm) x (D) 1.85" (47 mm) |
Product Weight: | 0.812 lbs (0.368 kg) |
Agency Approvals: | EMC Directive 2014/30/EC, RoHS Directive 2011/65/EU & RoHS 3 Directive 2015/863/EU |
1Accuracy is defined 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 levels 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.
4Changes can be made using TTL-232R-3V3 cable and UIP5 software.
Supply Voltage: | 24 VAC/VDC ±20%; 50/60 Hz, 10.5 to 40 VDC maximum (Half-wave rectified) |
Power Consumption: | <1W |
Wiring Connections: | 0.00232 in² (1.5 mm²) screw terminals |
Operating Environment: | Residential, commercial and industrial spaces |
Operating Temperature: | 32ºF to 122ºF (0ºC to 50ºC) |
Operating RH: | 0 to 85% RH Non-condensing |
Warm-Up Time: | <5 minutes (@ full specs 15 minutes) |
Accuracy: | CO₂1: ±30 ppm ±3% of reading | Temperature: ±1.8ºF (1ºC) |
Repeatability: | ±20 ppm ±1% of measured value |
Annual Zero Drift: | <± 0.3% of measurement range |
Operating Pressure: | +1.6% per 0.145 psi (1 kPa) deviation from normal pressure, (1 Atmosphere = 14.7 psi (1.013 KPa)) |
Sensing Method: | Single beam Non-dispersive Infrared (NDIR) |
Sensor Life2: | >15 years |
Response Time (T1/e): | <10 seconds @ 30 cc/minutes flow rate, <3 minutes diffusion time |
Sensing Range: | CO₂: 0 to 2000 ppm | Temperature: -4 to 140ºF (-20 to 60ºC) |
Extended CO₂ Ranges: | 2,000 to 10,000 ppm (factory set or programming cable required) |
Extended Range Accuracy: | +/- 30 ppm and +/- 5% of reading |
Coverage Area: | 7500 sq. ft. maximum |
Self-Diagnostics: | Complete function check, yellow LED; LCD error indication (display model only) |
Display (Optional): | 4 digits, 7 segments LCD with ppm indicator |
Calibration3: | Senseair ABC algorithm (Automatic Baseline Correction) |
Outputs: | Output 1 (CO₂): 0/2 to 10V, 0/4 to 20 mA, 0 to 2000 ppm
Output 2 (Temperature): 0/2 to 10V, 0/4 to 20 mA, 32 to 122ºF (0 to 50ºC) |
Relay (Optional): | Output 3: N.O. or N.C. rated 0.5A @ 125 VAC; 1A @ 24 VDC |
Relay Trip Point4: | 1000 ppm (factory set) |
Relay Deadband/Hysteresis: | 100 ppm (factory set) |
Relay Durability: | Mechanical: 5,000,000 operations minimum (at 36,000 operations/hr)
Electrical: 100,000 operations minimum (under rated load, at 1,800 operations/hr) |
Storage: | NSA-ASENSE-D: -40 to 158ºF (-40 to 70ºC)
NSA-ASENSE-D-LCD: -4 to 122ºF (-20 to 50ºC) 0 to 85% RH 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 |
Product Dimensions: | (H) 5.95" (151.9 mm) x (W) 3.33" (84.6 mm) x (D) 1.85" (47 mm) |
Product Weight: | 0.812 lbs (0.368 kg) |
Agency Approvals: | EMC Directive 2014/30/EC, RoHS Directive 2011/65/EU & RoHS 3 Directive 2015/863/EU |
1Accuracy is defined 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 levels 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.
4Changes can be made using TTL-232R-3V3 cable and UIP5 software.