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Documents: CDT-2D4A

AQ-CDT Duct Mount Manual (Pre April 2022)AQ-CDT Duct Mount Manual (Post April 2022)AQ-CDT-N Wall Mount Manual (Pre April 2022)AQ-CDT-N Wall Mount Manual (Post April 2022)Series CDT Catalog Page CDT More Info

CDT-2D4A | Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current/voltage CO2 outputs and 10K Ohm Type III thermistor temperature output. | Dwyer

Carbon Dioxide Transmitter, duct mount, 2000 ppm, CO2 transmitter with current/voltage CO2 outputs and 10K Ohm Type III thermistor temperature output.

Brand: DwyerSKU: CDT-2D4A

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Overview Details for CDT-2D4A

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Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current/voltage CO2 outputs and 10K Ohm Type III thermistor temperature output.

SERIES CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTER

NDIR CO2 Sensor, Universal Outputs, Optional Relay

The Series CDT Carbon Dioxide and Temperature Transmitters accurately monitorthe CO2 concentration and temperature in indoor environments to help achieve energysavings. In order to achieve a higher level of accuracy, the Series CDT includesbarometric pressure adjustment. The CO 2 universal output allows users to select thetransmitter output to be 4-20 mA, 0-5 VDC, or 0-10 VDC to work with virtually anybuilding management controller.
For applications that require visual indication, the wall mount configurations of theSeries CDT can be ordered with an integral LCD display. To prevent tampering, theaction of the buttons can be locked out using an internal dip switch selection.

*For buildings occupied 24 hours per day, it is recommended that calibration be verified every 6 to 12 months depending on application.

For models with resistive thermistors or RTD outputs, please click here for temperature to resistance lookup tables.

Product Applications

Demand control ventilation in schools, office buildings, hospitals, and other indoorenvironments
LEED® certification

Minimize inventory and save time by combining CO 2 and temperaturemeasurements into one transmitter
Requires minimal maintenance with Automatic Baseline Correction (ABC) to accountfor sensor drif
Reduce operation costs using a low energy, reliable, and repeatable CO 2 sensor
Simplify installation with backplate electrical connection

Specifications

Series: CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTER
Category/Type: Air Quality
Type: Carbon Dioxide Transmitters
Series: CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTER
Sensor: NDIR; 15 year life expectancy.
Range: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Temperature: 32 to 122°F (0 to 50°C).
Accuracy*: CO2: ±40 PPM + 3% of reading (2000 PPM CO2); ± 50 PPM + 5% of reading (5000 PPM CO2); Temperature: ±1°C @ 25°C.
Response Time: 2 min for 99% step change.
Temperature Limits: 32 to 122°F (0 to 50°C).
Humidity Limits: 0 to 85% (non-condensing).
Power Requirements: 16 to 35 VDC or 19 to 28 VAC.
Power Consumption: Average: 2 w; Peak: 3.75 w.
Output: Current: 4-20 mA (max. 500 Ω); Voltage: 0-5 VDC or 0-10 VDC (min. 500Ω); Relay: SPST NO rated 2A @ 30 VDC; RTD or thermistor per r-t curves on page4 (depending on model).Relay: SPST NO rated 2 A @ 30 VDC; RTD or thermistor per r-t curves on page 4 in catalog (depending on model).
Compliance: CE.