CDT-2W40

Overview

The Dwyer Instruments CDT-2W40 is a wall-mount Carbon Dioxide and Temperature Transmitter belonging to the Series CDT. It accurately monitors CO2 concentration and temperature in indoor environments to support energy savings and occupant comfort. The device features digital barometric pressure adjustment for enhanced accuracy and allows for field calibration of the sensor. Electrical outputs include 4-20mA or 0-10VDC, providing flexible integration into building control systems.

Feature Summary

• Wall-mount design for indoor environmental monitoring
• Digital barometric pressure adjustment capability
• Field-calibratable sensor technology
• Dual output options including 4-20mA and 0-10VDC

Applications

• Schools and educational facilities
• Office buildings
• Commercial HVAC control systems
• Occupant comfort management

Procurement Notes

Verify the specific model suffix when ordering, as variations such as -LCD (with display) or -NBC exist within the Series CDT family. Confirm that the required output signal matches the system interface, as the base CDT-2W40 supports both 4-20mA and 0-10VDC options. Ensure compatibility with existing building automation protocols before procurement.

Selection Notes

Select this transmitter for applications requiring precise CO2 and temperature monitoring without the need for a local display. Consider the CDT-2W40-LCD variant if visual feedback is necessary. Verify installation requirements for wall mounting and ensure access for field calibration procedures. Check if digital barometric pressure adjustment is required for the specific altitude or environment.

Part Context

This component is part of the Dwyer Series CDT line of Carbon Dioxide/Temperature Transmitters. The series is designed to monitor indoor air quality and thermal conditions to optimize HVAC efficiency. Other models in the series include duct-mounted versions like the CDT-2D40 and variants with integrated displays.

Replacement Considerations

Direct replacements may include other Dwyer Series CDT models depending on output requirements. The CDT-2W40-LCD serves as a functional equivalent with added display capabilities. Cross-brand substitution requires verification of mounting dimensions, electrical interfaces, and calibration methods.