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Dwyer® SERIES CDTV CO2/VOC Transmitter

KSh 30148KSh 45339

Dwyer® SERIES CDTV CO2/VOC Transmitter, Carbon Dioxide/Volatile Organic Compound (VOC) Transmitter lessens energy cost in structures by bringing down the measure of adapted air dependent on the inhabitance of the space. By detecting both CO2 and VOC, the transmitter can recognize vapor that may be depleted amid lower inhabitance periods.

Applications: HVAC applications in hospitals, schools, and commercial buildings demand control ventilation door control waiting rooms or other spaces that may be occupied 24 hours a day


Dwyer® SERIES CDTV CO2/VOC Transmitter, Carbon Dioxide/Volatile Organic Compound Transmittersreduce 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.

Features of Dwyer® SERIES CDTV CO2/VOC Transmitter

  •  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 ASHRAE’s occupancy-based VRP Algorithm.

Additional information



Model No

Select from above dropdown


CO2: 0-2000 ppm & VOC: 0 to 2000 ppm CO2 equivalent.


CO2: ±40 ppm ±3% of reading.

Temperature Dependance

±8 ppm / °C at 1100 ppm.

Pressure dependency

CO2: 0.13% of reading per mm of Hg.

Response Time

CO2: 2 minutes for 99% step change; VOC: 5 minutes.


CO2: Single-beam, dual-wavelength NDIR; VOC: MEMS metal oxide semiconductor

Temperature Limits

32 to 122°F (0 to 50°C).


16 to 35 VDC / 19 to 28 VAC

Non Linearity

CO2: 16 ppm.

Duct Air velocity

0 to 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


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.

Enclosure rating IP

Duct mount: NEMA 4X (IP66) for housing only; Wall mount: IP20




160 Grams

Weight N/A
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Dwyer® SERIES CDTV CO2/VOC Transmitter

KSh 30148KSh 45339

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