Dwyer Instruments CDT-2D40 Duct Mount CO2 Transmitter

The Dwyer Instruments CDT-2D40 is a duct-mounted carbon dioxide (CO2) transmitter designed for HVAC applications requiring accurate monitoring of CO2 levels in air handling systems. This transmitter provides reliable CO2 measurement in ducted environments, making it ideal for demand-controlled ventilation systems and indoor air quality monitoring.

Key Features:

• Duct mount configuration for installation directly in air ducts and HVAC systems
• Non-dispersive infrared (NDIR) dual wavelength CO2 sensor technology for accurate, stable measurements
• Measurement range of 0-2000 ppm CO2
• 4-20 mA output signal for integration with building automation systems
• Automatic background calibration (ABC) logic compensates for sensor drift over time
• Durable ABS housing suitable for duct mounting applications
• 24 VAC/VDC power supply compatibility

This CO2 transmitter is commonly used in commercial buildings, schools, offices, and other facilities where monitoring CO2 levels in ductwork helps optimize ventilation rates, improve energy efficiency, and maintain healthy indoor air quality. The duct mount design allows for continuous monitoring of CO2 concentrations in the air stream without requiring wall or room installation.