Dwyer Instruments CDTR-5D404 | Carbon Dioxide/RH/Temperature Transmitter | 5000 ppm CO2 range | Duct mount | 4 to 20 mA/0 to (5 or 10) VDC CO2 output | RH outputs & no temperature output
The Dwyer Instruments CDTR-5D404 is a duct-mounted carbon dioxide and relative humidity transmitter designed for HVAC, building management, and demand-controlled ventilation applications. It measures 0-5000 PPM CO₂ using a single-beam dual-wavelength NDIR sensor and provides universal 4-20 mA, 0-5 VDC, or 0-10 VDC outputs for CO₂ and relative humidity.
Although the CDTR series combines CO₂, relative humidity, and temperature sensing capabilities, the CDTR-5D404 has no temperature output. This model is designed specifically for duct applications where CO₂ and humidity monitoring are required.
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Part Number: CDTR-5D404
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Product Overview
The Dwyer CDTR-5D404 is part of the Series CDTR Carbon Dioxide, Relative Humidity and Temperature Transmitters, developed to reduce the number of separate sensors required in wall or duct installations.
This model provides a 0-5000 PPM CO₂ measurement range and uses a single-beam dual-wavelength NDIR sensor. The sensor automatically compensates for light-source aging effects, supporting stable CO₂ measurement over time.
The CDTR-5D404 also provides digital barometric pressure adjustment and field calibration, allowing the transmitter to be adjusted for installation conditions and maintained in the field when required.
Universal analog outputs make the transmitter compatible with a wide range of building management and HVAC control systems. Both CO₂ and relative humidity can be integrated using selectable 4-20 mA, 0-5 VDC, or 0-10 VDC outputs.
The duct-mount configuration makes the CDTR-5D404 particularly suitable for HVAC systems where measurements need to be taken directly from ductwork rather than from a wall-mounted room sensor. The transmitter does not include a display and does not provide a temperature output on this model.
Key Benefits
- 0-5000 PPM CO₂ measurement range
- Measures CO₂ and relative humidity
- No temperature output on the CDTR-5D404 configuration
- Single-beam dual-wavelength NDIR CO₂ sensor
- Universal 4-20 mA, 0-5 VDC, or 0-10 VDC outputs
- Digital barometric pressure adjustment
- Field-calibration capability
- Duct-mount configuration for HVAC applications
- No display, providing a compact sensing solution
- Suitable for BMS and demand-controlled ventilation systems
- Genuine Dwyer Instruments stock with free UAE-wide shipping
Who This Product Is Best For
The Dwyer CDTR-5D404 is suited for:
- HVAC demand-controlled ventilation systems
- Building management system (BMS) projects
- Duct-mounted CO₂ and humidity monitoring
- Commercial and industrial HVAC installations
- Retrofit projects where multiple sensors need to be consolidated
- Applications requiring universal analog outputs for CO₂ and RH
How to Specify & Commission It
- Install the CDTR-5D404 in the duct according to the installation requirements.
- Connect the power supply and wire the required CO₂ and RH outputs.
- Select the required 4-20 mA, 0-5 VDC, or 0-10 VDC output configuration.
- Set the appropriate barometric pressure value and perform field calibration if required.
- Verify the CO₂ and relative humidity readings at the connected controller or BMS.
Frequently Asked Questions
What does the Dwyer CDTR-5D404 measure?
The CDTR-5D404 measures carbon dioxide and relative humidity. This specific model does not provide a temperature output.
What is the CO₂ measurement range?
The transmitter measures CO₂ from 0 to 5000 PPM.
What sensor technology does the CDTR-5D404 use?
It uses a single-beam dual-wavelength NDIR sensor designed to automatically compensate for light-source aging effects.
What outputs are available?
The CDTR-5D404 provides universal 4-20 mA, 0-5 VDC, or 0-10 VDC outputs for CO₂ and relative humidity.
Does the CDTR-5D404 have a temperature output?
No. Although the CDTR is a CO₂/RH/temperature transmitter series, the CDTR-5D404 configuration has no temperature output.
Does the CDTR-5D404 have a display?
No. This is a duct-mounted transmitter without a display.
Can the CDTR-5D404 be calibrated in the field?
Yes. The transmitter provides digital barometric pressure adjustment and field calibration.
Where is the CDTR-5D404 used?
It is suitable for HVAC demand-controlled ventilation, BMS installations, duct CO₂ monitoring, humidity monitoring, and retrofit applications requiring universal analog outputs.
Is genuine stock available with UAE shipping?
Yes. Genuine Dwyer Instruments stock with free UAE-wide shipping is available. Call +971 6 5436933 for pricing and current availability.
Request a Quote Today
For pricing, availability, or technical assistance with the Dwyer CDTR-5D404 CO₂/RH Transmitter, contact General Tech Services LLC.
Call: +971 6 5436933
Website: www.generaltechshop.ae
