Dwyer Instruments CDT-2D4E | Carbon Dioxide Transmitter | Duct mount | 2000 ppm | CO2 transmitter with current/voltage CO2 outputs and PT1000 RTD temperature output
The Dwyer CDT-2D4E is a duct-mount carbon dioxide and temperature transmitter with a 0-2000 ppm CO₂ range, universal 4-20 mA, 0-5 VDC or 0-10 VDC CO₂ output and a Pt1000 Ω RTD temperature output. It is designed for indoor air monitoring, demand-controlled ventilation and HVAC applications requiring duct-mounted CO₂ and temperature measurement. Genuine stock at General Tech Services LLC, UAE, with free UAE-wide shipping. Request a quote in under a minute - call +971 6 5436933.
Part No. CDT-2D4E
Product Overview
The Dwyer Series CDT Carbon Dioxide Transmitters accurately monitor CO₂ concentration and temperature in indoor environments to support ventilation control and energy-saving applications. The CDT-2D4E is a duct-mount model with a 0-2000 ppm CO₂ range and a Pt1000 Ω RTD temperature output.
A single-beam, dual-wavelength NDIR sensor automatically compensates for light-source aging effects in occupied and unoccupied buildings. The transmitter includes digital barometric pressure adjustment and field calibration capability. Its universal CO₂ output can be configured for 4-20 mA, 0-5 VDC or 0-10 VDC to suit the connected controller.
The duct-mount version features a NEMA 4X (IP66) housing and is suitable for duct air velocities up to 4000 FPM (20.32 m/s). The backplate electrical connection simplifies installation.
Key Benefits
- 0-2000 ppm CO₂ measurement with Pt1000 Ω RTD temperature output
- Single-beam, dual-wavelength NDIR sensor with 15-year life expectancy
- Universal 4-20 mA, 0-5 VDC or 0-10 VDC CO₂ output
- CO₂ and temperature measurement in one transmitter
- Pt1000 Ω RTD temperature sensing
- NEMA 4X (IP66) duct housing
- Suitable for duct air velocities up to 4000 FPM (20.32 m/s)
- Digital barometric pressure adjustment
- Field calibration capability
- Backplate electrical connection for simplified installation
- Genuine Dwyer stock with free UAE-wide shipping
Who This Product Is Best For
- Demand-controlled ventilation in schools, offices, hospitals and commercial buildings
- HVAC and building automation systems requiring duct-mounted CO₂ and temperature monitoring
- Projects specifying duct CO₂ sensing with universal analog outputs
- Applications requiring a Pt1000 Ω RTD temperature output
- LEED-driven ventilation monitoring projects
- Installations requiring a rugged NEMA 4X (IP66) duct housing
How to Specify & Commission It
- Confirm the 0-2000 ppm CO₂ range, Pt1000 Ω RTD output and duct-mount configuration are suitable for the application.
- Mount the transmitter in the duct according to the installation requirements.
- Confirm the duct air velocity does not exceed 4000 FPM (20.32 m/s).
- Wire the power supply and select the required 4-20 mA, 0-5 VDC or 0-10 VDC CO₂ output.
- Connect the Pt1000 Ω RTD temperature output to the appropriate controller input.
- Set the barometric pressure and perform field calibration if required.
- Verify CO₂ and temperature readings at the connected controller.
Frequently Asked Questions
What does the CDT-2D4E measure?
It measures CO₂ from 0-2000 ppm and temperature through a Pt1000 Ω RTD output.
What CO₂ outputs are available?
The universal CO₂ output can be configured for 4-20 mA, 0-5 VDC or 0-10 VDC.
How accurate is the CDT-2D4E?
CO₂ accuracy is ±40 ppm + 3% of reading at 2000 ppm. Temperature accuracy is ±1°C at 25°C.
What sensor technology is used?
It uses a single-beam, dual-wavelength NDIR sensor with a 15-year life expectancy.
What type of temperature output does it provide?
The CDT-2D4E provides a Pt1000 Ω RTD temperature output.
Is the CDT-2D4E wall or duct mounted?
It is a duct-mount model.
What is the duct air velocity range?
The transmitter is suitable for duct air velocities from 0 to 4000 FPM (20.32 m/s).
What is the enclosure rating?
The duct-mount housing is rated NEMA 4X (IP66).
Can the transmitter be field calibrated?
Yes. The CDT series provides field calibration capability and digital barometric pressure adjustment.
Is genuine stock available with UAE shipping?
Yes. Genuine Dwyer stock is available through General Tech Services LLC with free UAE-wide shipping. Call +971 6 5436933 for pricing and current availability.
Request a Quote Today
For pricing or to place an order, contact General Tech Services LLC.
Call +971 6 5436933 | www.generaltechshop.ae
