Carbon Dioxide (CO2) Sensor (NDIR, Duct Mount)

The CDE is a non-dispersive infrared (NDIR) sensor designed for measuring environmental CO2 concentration in ventilation systems and indoor living spaces. Its measurement range of 0 to 2000 ppm makes it compliant with ASHRAE and other standards for ventilation control.

The CDE Series provides a user-selectable 4 to 20 mA or 0 to 10 Vdc output for versatility. Microprocessor-based digital electronics and a unique self-calibration algorithm improves long-term stability and accuracy.

Product Applications

• Controlling ventilation in response to occupancy
• Facilitating compliance with ASHRAE 62.1 standard for air quality
• Office buildings, conference rooms, schools, retail stores, etc.

Product Specifications

• Input Power: Class 2; 20 to 30 Vdc/24 AC 50/60 Hz; 100 mA max.
• Analog Output: 4 to 20 mA (clipped & capped)/0 to 10 Vdc (selectable)
• Operating Temp. Range: 0 to 50 °C (32 to 122 °F)
• Operating Humidity Range: 0 to 95% RH non-condensing
• Housing Material: High impact ABS plastic
• Terminal Block Torque (CDE): 0.5 to 0.6 N-m (4.4 to 5.3 in-lbf) max.
• Terminal Block Wire Size (CDE): 24 to 12 AWG (0.25 to 2.5mm2)
• Sensor Type: Non-dispersive infrared, diffusion sampling
• Output Range: 0 to 2000 ppm
• Accuracy: ±30 ppm ±2% of measured value
• Repeatability: ±20 ppm ±1% of measured value
• Response Time: <60 seconds for 90% step change
• Limited Warranty: 3 years