Description
The Dwyer CDT-2D40 is a duct-mount carbon dioxide (CO2) transmitter engineered for reliable indoor air quality monitoring and demand-controlled ventilation (DCV) in commercial HVAC applications. Designed for straightforward duct installation, this transmitter continuously measures CO2 concentration levels and provides a proportional output signal to building automation systems, DDC controllers, and ventilation equipment — helping optimize fresh air delivery based on actual occupancy.
Key Features
- Duct-mount design for easy integration into air handling and distribution systems
- Continuous CO2 concentration sensing for demand-controlled ventilation (DCV)
- Proportional analog output compatible with BAS and DDC control systems
- Non-dispersive infrared (NDIR) sensing technology for long-term accuracy and stability
- Supports energy-saving ventilation strategies by matching fresh air supply to occupancy load
- Compact, low-profile housing suitable for commercial duct installations
- LED status indicator for quick field verification
Typical Applications
- Commercial office buildings and open-plan workspaces
- Schools, classrooms, and educational facilities
- Retail spaces and shopping centers
- Conference rooms and assembly areas
- Hospitals and healthcare facilities
- Hotels and hospitality environments
Why Choose the Dwyer CDT-2D40?
Dwyer Instruments has a long-standing reputation for precision measurement and control instrumentation. The CDT-2D40 carries on that tradition with a robust duct-mount CO2 transmitter built for the demands of commercial HVAC environments. By accurately tracking CO2 levels in the airstream, this transmitter enables HVAC systems to deliver the right amount of ventilation at the right time — reducing energy waste while maintaining healthy indoor air quality for building occupants.
Brand
Dwyer Instruments is a globally recognized manufacturer of sensing, instrumentation, and control products for HVAC, industrial, and process applications.
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