Skip to main content

Asense CO₂ Room Sensor
NSA-ASENSE-CO2-RM

Part Numbers

NSA-ASENSE-R-LCD-REL
NSA-ASENSE-R-LCD

The ASENSE Room Sensor series monitors the carbon dioxide (CO₂) levels in 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, Gymnasiums, Shopping Malls, Auditoriums, Theatres, 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: Up 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
Mounting Height: 4-6' off the floor
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: -4 to 122ºF (-20 to 50ºC) 0 to 85% RH Non-condensing
Enclosure: ABS, Flammability Rating UL94-HB
Product Dimensions: (H) 5.12" (130 mm) x (W) 3.35" (85.1 mm) x (D) 1.18" (30 mm)
Product Weight: 0.314 lbs (0.142 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: Up 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
Mounting Height: 4-6' off the floor
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: -4 to 122ºF (-20 to 50ºC) 0 to 85% RH Non-condensing
Enclosure: ABS, Flammability Rating UL94-HB
Product Dimensions: (H) 5.12" (130 mm) x (W) 3.35" (85.1 mm) x (D) 1.18" (30 mm)
Product Weight: 0.314 lbs (0.142 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.

California residents please see Proposition 65