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CO2 Duct Sensors

Automated Logic’s CO2 Duct Sensors are an accurate and reliable way of incorporating demand controlled ventilation. They measure the CO2 in a range of 0 to 2,000, 0 to 5,000, 0 to 10,000, and 0 to 50,000 ppm with a field selectable output of 0 to 5 or 0 to 10 VDC.

The non-dispersive infrared (NDIR) technology of the “24/7” units have been optimized for areas that are continuously occupied. They feature a dual-channel optical system and threepoint calibration process for enhanced stability, accuracy and reliability.

These units also have continuous automatic air pressure compensation. Air pressure changes from altitude or weather patterns can affect the output of CO2 sensors, even putting them outside of their specified accuracy. These units have a built-in barometric sensor that continuously compensates the output for accurate readings despite the weather or the altitude of the installation.

The unit samples duct air using an aspiration tube.

Optional indication of the CO2 level as “Good, Fair or Poor” is available as a 3-color LED for 0 to 2,000 ppm range units.

KEY FEATURES
  • Automatic Barometric Pressure and Temperature Compensation
  • Optimized for Areas that are Continuously Occupied
SPECIFICATIONS
Sensing Element CO2 – Single Beam Non-Dispersive Infrared (NDIR)
Detection Range: 0 to 2,000 PPM
Accuracy: 75ppm
Field Selectable Output 0 to 2,000 PPM CO2
0 to 5 VDC or 0 to 10 VDC
Power Supply 12 to 24 VDC, 200 mA Peak
18 to 24 VAC, 2 VA Peak
Termination: 3 Terminals, 16 to 22 AWG
Wiring: 2 Pair
Start-Up Time: 10 Minutes
Response Time: Less Than 5 Minutes (after Start-Up Time)
Operating Environment: 32 to 122°F (0 to 50°C)
0 to 95%RH non-condensing
Enclosure Material: Polycarbonate, UL94 V-O
Optional LED CO2 Level Indicator: Good, Green < 1,000 PPM
Fair, Orange = 1,000 to 1,500 PPM
Poor, Red > 1,500 PPM
Certifications: RoHS
Warranty Period: 2 Years from ship date
Part Number Description Channels Output LED Indicator
NSB-DCD05-D-BB-A Duct CO2 Unit Dual Channel, 2,000 PPM 0 to 5 VDC No LED
NSB-DCD05-D-BB-LED-A Duct CO2 Unit Dual Channel, 2,000 PPM 0 to 5 VDC 3-Color LED
NSB-ACD05-D-BB-A Duct CO2 Unit Single Channel 0 to 5 VDC No LED
NSB-ACD05-D-BB-LED-A Duct CO2 Unit Single Channel 0 to 5 VDC 3-Color LED
  • Automatic Barometric Pressure and Temperature Compensation
  • Optimized for Areas that are Continuously Occupied
Sensing Element CO2 – Single Beam Non-Dispersive Infrared (NDIR)
Detection Range: 0 to 2,000 PPM
Accuracy: 75ppm
Field Selectable Output 0 to 2,000 PPM CO2
0 to 5 VDC or 0 to 10 VDC
Power Supply 12 to 24 VDC, 200 mA Peak
18 to 24 VAC, 2 VA Peak
Termination: 3 Terminals, 16 to 22 AWG
Wiring: 2 Pair
Start-Up Time: 10 Minutes
Response Time: Less Than 5 Minutes (after Start-Up Time)
Operating Environment: 32 to 122°F (0 to 50°C)
0 to 95%RH non-condensing
Enclosure Material: Polycarbonate, UL94 V-O
Optional LED CO2 Level Indicator: Good, Green < 1,000 PPM
Fair, Orange = 1,000 to 1,500 PPM
Poor, Red > 1,500 PPM
Certifications: RoHS
Warranty Period: 2 Years from ship date
Part Number Description Channels Output LED Indicator
NSB-DCD05-D-BB-A Duct CO2 Unit Dual Channel, 2,000 PPM 0 to 5 VDC No LED
NSB-DCD05-D-BB-LED-A Duct CO2 Unit Dual Channel, 2,000 PPM 0 to 5 VDC 3-Color LED
NSB-ACD05-D-BB-A Duct CO2 Unit Single Channel 0 to 5 VDC No LED
NSB-ACD05-D-BB-LED-A Duct CO2 Unit Single Channel 0 to 5 VDC 3-Color LED
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