Series CDTR Carbon Dioxide/RH/Temperature Transmitter

NDIR CO2 Sensor, Universal CO2/RH Outputs, Optional Relay

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 CO 2 , 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 non-dispersive infrared (NDIR) sensor is used to make the CO 2 measurement. In order to achieve the best possible accuracy, the Series CDTR also includes digital barometric pressure adjustment.
Universal outputs for both carbon dioxide and relative humidity allow 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. 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, CO 2 and humidity, or CO2 and temperature. To prevent tampering, the action of the buttons can be locked out using an internal jumper selection.

Product Applications

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

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Models & Ordering

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
CDTR-2N404 Ships: 1-2 Weeks Price: $251.00	Carbon Dioxide/Humidity, Wall Mount, universal current/voltage output, North American Housing.	1-2 Weeks*	$251.00	Order
CDTR-2N4A4 Ships: 1-2 Weeks Price: $257.10	Carbon Dioxide/Temperature/Humidity, Wall Mount, universal current/voltage output, 10K Type III Thermistor Temperature Output, North American Housing.	1-2 Weeks*	$257.10	Order
CDTR-2N4B4 Ships: 1-2 Weeks Price: $257.10	Carbon Dioxide/Temperature/Humidity, Wall Mount, universal current/voltage output, 10K Type II Thermistor Temperature Output, North American Housing.	1-2 Weeks*	$257.10	Order
CDTR-2N4D4 Ships: 1-2 Weeks Price: $258.20	Carbon Dioxide/Temperature/Humidity, Wall Mount, universal current/voltage output, Pt100 RTD Temperature Output, North American Housing.	1-2 Weeks*	$258.20	Order
CDTR-2N4E4 Ships: 1-2 Weeks Price: $258.20	Carbon Dioxide/Temperature/Humidity, Wall Mount, universal current/voltage output, Pt1000 RTD Temperature Output, North American Housing.	1-2 Weeks*	$258.20	Order
CDTR-2N4F4 Ships: 1-2 Weeks Price: $257.10	Carbon Dioxide/Temperature/Humidity, Wall Mount, universal current/voltage output, 20K Thermistor Temperature Output, North American Housing.	1-2 Weeks*	$257.10	Order

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

Specifications

Range:: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Relative humidity: 0 to 100% ; Temperature: 32 to 122°F (0 to 50°C).
Accuracy:: ±40 ppm + 3% of reading (CO2); ±2% (RH).
Temperature Dependence:: ±8 ppm/ °C at 1100 ppm.
Non-Linearity:: 16 ppm.
Pressure Dependence:: 0.13% of reading per mm of Hg.
Response Time:: 2 minutes for 99% step change.
Temperature Limits:: 32 to 122°F (0 to 50°C).
Duct Air Velocity Range:: 0-4000 FPM (20.32 m/s).
Humidity Limits:: 10 to 95% RH (non-condensing).
Power Requirements:: 16 to 35 VDC / 19 to 28 VAC.
Power Consumption:: Average: 2 watts; Peak: 3.75 watts.
Sensor:: Single-beam, dual-wavelength NDIR.
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 2A @ 30 VDC; RTD or thermistor per r-t curves (depending on model).
Enclosure Rating:: Duct mount: NEMA 4X (IP66) for housing only; Wall mount: IP20.
Compliance:: CE.

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

Accessories

Model Number	Description	Usually Ships*	Price	Order
A-449	Remote display with mini USB display.	Next Day	$65.00	Order
A-CDT-KIT	Accessory kit including terminal block and power supply.	1-2 Weeks	$51.00	Order
A-449A	Remote display with push buttons and mini USB. (Necessary for models with –NBC option)	Less Than 1 Week	$130.00	Order

Videos

Model Chart

EXAMPLE	CDTR	2	W	4	0	4	LCD	Series CDTR-2W404-LCD, Carbon Dioxide/RH/Temperature Transmitter, gas concentration range 2000 ppm, wall mount, carbon dioxide output 0-5 VDC/0-10VDC/4-20mA, RH output 0-5 VDC/0-10 VDC/4-20 mA, LCD display
SERIES	CDTR							Carbon Dioxide/RH/Temperature Transmitter
GAS CONCENTRATION RANGE		2 5						2000 ppm 5000 ppm
MOUNTING CONFIGURATION			D N					Duct Mount North American Wall Mount
CARBON DIOXIDE OUTPUT				4				0-5 VDC/0-10 VDC/4-20mA
TEMPERATURE OUTPUT					0 A B C D E F			NONE 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
RH OUTPUT						4		0-5 VDC/0-10 VDC/4-20 mA
OPTIONS							FC LCD RLY	Factory Calibration Certificate LCD Display Relay Output