Series CDT Carbon Dioxide/Temperature Transmitter

NDIR CO2 Sensor, Universal Outputs, Optional Relay

The Series CDT Carbon Dioxide and Temperature Transmitters accurately monitor the CO2 concentration and temperature in indoor environments to help achieve energy savings. In order to achieve a higher level of accuracy, the Series CDT includes barometric pressure adjustment. The CO2 universal output allows users to select the transmitter output to be 4-20 mA, 0-5 VDC, or 0-10 VDC to work with virtually any building management controller.
For applications that require visual indication, the wall mount configurations of the Series CDT can be ordered with an integral LCD display. To prevent tampering, the action 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.

Product Applications

  • Demand control ventilation in schools, office buildings, hospitals, and other indoor environments
  • LEED® certification

Models & Ordering

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Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Build Your Custom Part. Use our Product Configurator

Model Description Usually Ships* Price Order
CDT-2N40
Ships: 1-2 Weeks
Price: $192.00
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $192.00 Order
CDT-2N44
Ships: 1-2 Weeks
Price: $204.00
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, 0 to 2000 PPM CO 2 range, 4-20 mA / 0 to (5 or 10) VDC, North American housing. 1-2 Weeks* $204.00 Order
CDT-2N4A
Ships: 1-2 Weeks
Price: $198.10
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, 10K Type III Thermistor Temperature Output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $198.10 Order
CDT-2N4B
Ships: 1-2 Weeks
Price: $198.10
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, 10K Type II Thermistor Temperature Output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $198.10 Order
CDT-2N4D
Ships: 1-2 Weeks
Price: $199.10
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, Pt100 RTD Temperature Output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $199.10 Order
CDT-2N4E
Ships: 1-2 Weeks
Price: $199.10
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, Pt1000 RTD Temperature Output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $199.10 Order
CDT-2N4F
Ships: 1-2 Weeks
Price: $198.10
Carbon Dioxide/Temperature transmitter, wall mount, universal current/voltage output, 20K Thermistor Temperature Output, 0 to 2000 PPM CO 2 range, North American housing. 1-2 Weeks* $198.10 Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

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); RH: ±2% (10 to 90% RH) (for units configured with humidity output); Temperature: ±1°C @ 25°C.
Temperature:
±1°C @ 25°C.
Non-Linearity:
16 ppm.
Response Time:
2 min for 90% step change.
Duct Air Velocity Range:
0-4000 FPM (20.32 m/s).
Temperature Limits:
32 to 122°F (0 to 50°C).
Humidity Limits:
10 to 85% RH (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 to 20 mA (max 500 Ω); Voltage: 0 to 5 VDC or 0 to 10 VDC (min 500 Ω);
Relay: SPST NO 2 A @ 30 VDC;
Weight:
4.4 oz (125 g).
Enclosure Rating:
Duct mount: NEMA 4X (IP66) for housing only; Wall mount: IP20.
Agency Approvals:
CE.
*The specified CO2 accuracy is only guaranteed after three weeks of continuous operation in environments which are intermittently occupied.

Features

  • Minimize inventory and save time by combining CO2 and temperature measurements into one transmitter
  • Reduces the number of devices mounted in the space with integral humidity and temperature sensors
  • Requires minimal maintenance with Automatic Baseline Correction (ABC) to account for sensor drift
  • Reduce operation costs using a low energy, reliable, and repeatable CO2 sensor
  • Simplify installation with backplate electrical connection

Accessories

Model Number Description Usually Ships* Price Order
Remote display with mini USB display. A-449 Remote display with mini USB display. Same Day $59.00 Order
Gas Calibration Kit <br><b>(GROUND SHIPMENTS ONLY)</b> GCK-200CO-2000CO2 Gas Calibration Kit
(GROUND SHIPMENTS ONLY)
Same Day $573.00 Order
Accessory kit including terminal block and power supply. A-CDT-KIT Accessory kit including terminal block and power supply. 1-2 Weeks $40.75 Order
Remote display with push buttons and mini USB. (Necessary for models with –NBC option) A-449A Remote display with push buttons and mini USB. (Necessary for models with –NBC option) Same Day $118.00 Order

Videos

Model Chart

EXAMPLE CDT 2 W 4 0 LCD Series CDT-2W40-LCD, Carbon Dioxide Transmitter, gas concentration range 200 ppm, wall mount, carbon dioxide output 0-5 VDC/0-10VDC/4-20mA, LCD display
SERIES CDT           Carbon DioxideTransmitter
GAS CONCENTRATION RANGE   2
5
        2000 ppm
5000 ppm
MOUNTING CONFIGURATION     W
D
E
N
      Wall Mount (Disc. Q4/2020)
Duct Mount
European Wall Mount
North American Wall Mount
CARBON DIOXIDE OUTPUT       4     0-5 VDC/0-10 VDC/4-20mA
TEMPERATURE OUTPUT         0
4
A
B
C
D
E
F
  NONE                        
0-5 VDC/0-10 VDC/4-20 mA
10K OHM Type 3 NTC Thermistor
10K OHM Type 2 NTC Thermistor
3K OHM NTC Thermistor (not available with Mtg Option E, N)
PT100 OHM RTD               
PT1000 OHM RTD              
20K OHM NTC Thermistor
OPTIONS           CE
COC
FC
LCD
NBC
RLY
CE Approval (Disc. Q4/2020)
Certificate of Calibration
Factory Calibration Certificate
LCD Display
No Buttons (Wall Mount only)
Relay Output

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