Series CDTV Carbon Dioxide/Volatile Organic Compound Transmitters

Simultaneously Outputs Both CO2 / VOC

The Series CDTV Carbon Dioxide/Volatile Organic Compound (VOC) Transmitter reduces energy cost in buildings by lowering the amount of conditioned air based on the occupancy of the space. By sensing both CO2 and VOC, the transmitter can detect fumes that may need to be exhausted during lower occupancy periods.

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

Product Applications

HVAC applications in hospitals, schools, and commercial buildings
Demand control ventilation
Odor control
Waiting rooms or other spaces that may be occupied 24 hours a day

Starting at $418.10

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Specifications

Range:: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); VOC: 0 to 2000 ppm CO2 equivalent.
Accuracy:: CO2: ±40 ppm ±3% of reading.
Temperature Dependence:: ±8 ppm / °C at 1100 ppm.
Non-Linearity:: CO2: 16 ppm.
Pressure Dependence:: CO2: 0.13% of reading per mm of Hg.
Response Time:: CO2: 2 minutes for 99% step change; VOC: 5 minutes.
Temperature Limits:: 32 to 122°F (0 to 50°C).
Duct Air Velocity Range:: 0-4000 FPM (20.32 m/s).
Power Requirements:: 16 to 35 VDC / 19 to 28 VAC.
Power Consumption:: Average: 2 watts; Peak: 3.75 watts.
Sensor:: CO2: Single-beam, dual-wavelength NDIR; VOC: MEMS metal oxide semiconductor.
Output:: Current: 0 to 20 mA, 4 to 20 mA, 0 to 10 mA, or 2 to 10 mA (depending on selection jumper, max 500 O); Voltage: 0 to 10 VDC, 2 to 10 VDC, 0 to 5 VDC, or 1 to 5 VDC (depending on selection jumper, min 500 O); Relay: SPST NO 2A @ 30 VDC.
Weight:: 5.6 oz (158.8 g).
Enclosure Rating:: Duct mount: NEMA 4X (IP66) for housing only; Wall mount: IP20.
Compliance:: CE.

Features

Combination VOC and CO2 outputs reduce labor and material costs
Single beam dual wavelength NDIR CO2 sensor allows for use in spaces that may be occupied 24 hours a day
VOC output is correlated to be equivalent to CO2 measurements
Ventilate using ASHRE’s occupancy-based VRP Algorithm

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Model Chart

EXAMPLE	CDTV	2	D	4	0	4	RLY	Series CDTV-2D404-RLY, Carbon Dioxide VOC Transmitter, gas concentration range 2000 ppm, duct mount, carbon dioxide output 0-5 VDC/0-10VDC/4-20mA, relay output
SERIES	CDTV							Carbon Dioxide VOC Transmitter
GAS CONCENTRATION RANGE		2 5						2000 ppm 5000 ppm
MOUNTING CONFIGURATION			D N					Duct Mount North American Style 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 PT100 Ohm RTD PT1000 Ohm RTD 20K Ohm NTC Thermistor
VOC OUTPUT						4		0-5 VDC/0-10 VDC/4-20 mA
OPTIONS							COC FC LCD RLY	Certificate of Calibration Factory Calibration Certificate LCD Display (not available with Duct Mount) Relay Output