CDL carbon dioxide sensor

CDL carbon dioxide sensors maximize energy savings, while ensuring optimal ventilation. The sensors allow ventilation systems to be controlled by the amount of CO2 present in a space. The CDL Series detect fluctuations in CO2 levels and signal ventilation systems to provide an inlet of fresh air optimal for the space at a given time saving energy and ensuring tenant comfort.

Series Specifications
• Input Power 20 to 30VDC/24VAC; 100mA max.
• Analog Output 4-20mA, (clipped & capped)/0-5VDC/0-10VDC (selectable)
• Operating Temperature Range 0° to 50°C (32° to 122°F)
• Housing Material High impact ABS plastic

CO2 Transmitter:

• Sensor Type Non-dispersive infrared (NDIR), diffusion sampling
• Measurement Range 0-2000/5000 ppm (programmable)
• Accuracy ±30 ppm ±2% of measured value*
• Repeatability ±20 ppm ±1% of measured value
• Response Time <60 seconds for 90% step change

RH Transmitter: 

• HS Sensor Fully replaceable, digitally profiled thin-film capacitive (32-bit mathematics) U.S. Patent 5,844,138
• Accuracy ±2% from 10 to 80% RH; NIST traceable multi-point calibration
• Stability ±1% @ 20°C (68°F) annually, for two years
• Operating Humidity Range 0 to 100% RH
• Operating Temperature Range 10° to 35°C (50° to 95°F)
• Temperature Coefficient ±0.1% RH/°C above or below 25°C (typical)

Temperature Transmitter:

• Sensor Type Solid-state, integrated circuit
• Accuracy ±0.5°C (±1°F) typical
• Resolution 0.1°C (0.2°F)
• Range 10° to 35°C (50° to 95°F)

Relay Contacts:

• 1 Form C (SPDT) (on models without setpoint slider option) 1A@30VDC, resistive; 30W max.

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