Series CDTR Carbon Dioxide/RH/Temperature Transmitter

Brand: Dwyer Instruments, LLC

The Series CDTR Carbon Dioxide, Relative Humidity and Temperature Transmitters reduce the number of sensors mounted on a wall or in a duct.

By combining CO2, RH, and temperature in one device, system integrators are able to reduce installation time while lowering material cost at the same time. 

Like our popular Series CDT Carbon Dioxide Transmitter, a single beam dual wavelength non-dispersive infrared (NDIR) sensor is used to automatically correct the measurement in both occupied and unoccupied buildings against light source aging effects.

In order to achieve the best possible accuracy, the Series CDTR also includes digital barometric pressure adjustment and the ability to field calibrate the sensor.

Universal outputs for both carbon dioxide and relative humidity allow users to select the transmitter output to be 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC to work with virtually any building management controller. 

Additionally, passive thermistor or RTD sensor can be ordered for a temperature output. For applications that require visual indication, the wall mount configurations of the Series CDTR can be ordered with an integral LCD display.

The display can be configured to display temperature only, relative humidity only, CO2 only, CO2 and humidity, or CO2 and temperature.

Push buttons are standard on all configurations of the transmitters for access to the menu structure. To prevent tampering, the action of the buttons can be locked out using an internal jumper selection.
Features
  • Digital Intelligence Temperature Compensation Algorithm (DITCA™) eliminates error due to the self heating effects of wall mount combination devices
  • Single Beam Dual Wavelength NDIR CO2 Sensor
  • Replaceable Humidity/Temperature Sensors
  • Physical Hardware Lockout
  • Service display tool available for duct mount and wall mount units without an LCD
  • Relay Output Option

Models matching criteria: 504
DWYER Carbon Dioxide / Temperature / Humidity, Wall Mount, Universal Current / Voltage Output, 20K Thermistor Temperature Output, North American Housing. view more
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 20 KO NTC Thermistor
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$786.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,668.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - None
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$2,013.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$629.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$1,159.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type II
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$1,617.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type III
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$381.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$1,454.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type II
  • Certificates - None
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,947.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,185.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - Duct Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt100 O RTD
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
100+ In Stock
$2,127.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$726.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt100 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$885.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 3 KO NTC Thermistor
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$1,721.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 20 KO NTC Thermistor
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,725.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - Duct Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 20 KO NTC Thermistor
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
100+ In Stock
$2,237.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$2,499.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - Duct Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 20 KO NTC Thermistor
  • Certificates - Factory Calibration Certificate
  • Relay - SPST N/O Rated 2A, 30 Vdc
100+ In Stock
$581.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt100 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,574.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$1,683.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - None
  • Display - Not Required
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$1,901.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - None
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$2,230.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type III
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$589.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type II
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$620.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$955.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - Duct Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 20 KO NTC Thermistor
  • Certificates - None
  • Display - Not Required
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$1,046.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 3 KO NTC Thermistor
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$1,059.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type III
  • Certificates - None
  • Display - Not Required
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$1,330.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$2,468.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 3 KO NTC Thermistor
  • Certificates - None
  • Display - LCD Screen
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$435.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$1,291.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type II
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$2,416.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type III
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$687.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type III
  • Certificates - None
  • Display - LCD Screen
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - Buttons
100+ In Stock
$1,569.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 10 KO NTC Thermistor Type II
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$2,313.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - North American Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt100 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - Not Required
  • Relay - SPST N/O Rated 2A, 30 Vdc
  • Options - No Buttons
100+ In Stock
$822.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - Factory Calibration Certificate
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$951.00 CAD
$10.00 Shipping
  • Range - 0 to 2,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - 3 KO NTC Thermistor
  • Certificates - None
  • Display - LCD Screen
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$1,164.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt100 O RTD
  • Certificates - None
  • Display - LCD Screen
  • Relay - No Relay
  • Options - No Buttons
100+ In Stock
$1,786.00 CAD
$10.00 Shipping
  • Range - 0 to 5,000 ppm CO2 Range
  • Configuration - European Style Wall Mount
  • Output - 4-20 mA / 0 to (5 or 10) Vdc
  • Temperature Output - Pt1000 O RTD
  • Certificates - None
  • Display - Not Required
  • Relay - No Relay
  • Options - Buttons
100+ In Stock
$2,532.00 CAD
$10.00 Shipping

Specifications

Accuracy

  • ± 2 % - RH
  • ± 40 ppm ± 3 % of Reading (CO₂)

Applications

  • Demand Control Ventilation in Schools, Office Buildings, Hospitals, & Other Indoor Environments

Approvals & Certifications

  • FC Factory Calibration Certificate
  • LEED

Approvals & Certifications

  • CE

Consumption

  • 2 W - Average
  • 3.75 W - Peak

Display

  • LCD Display

Flow Rate

  • 0 to 2000 ppm
  • 0 to 5000 ppm

Humidity

  • 10 to 95 % Relative Humidity, Non-Condensing

Mounting

  • Duct Mount
  • Wall Mounted

Output

  • 0-10 Vdc - Voltage
  • 0-5 Vdc - Voltage
  • 4-20 mA - Current
  • SPST Normally Open, 2 A at 30 Vdc

Output Format

  • Relay Output

Power Requirement

  • 16-35 Vdc
  • 19-28 Vac

Response Time

  • 2 minutes for 99 % Step Change

Sensor / Probe Type

  • NTC Thermistor (10 kiloohms Typical Ll & Lll, 3 kiloohms, 20 kiloohms)
  • RTD - Pt100 & PT1,000 ohms

Temperature Range

  • 0° to 50° C (32° to 120° F)

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

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