dwyer-inst.comDWYER INSTRUMENTS, INC.®T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141FEATURES/BENEFITS• 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 AlgorithmAPPLICATIONS• 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 dayDESCRIPTIONThe 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 detecting both CO2 and VOC, the transmitter can also detect fumes that may need to be exhausted during lower occupancy periods. Combining both measurements in one transmitter reduces both labor and material costs by only having to install one CDTV-VOC unit, instead of separate CO2 and VOC transmitters.SPECIFICATIONS RangeCO2: 0 to 2000 or 0 to 5000 ppm (depending on model); VOC: 0 to 2000 ppm CO2 equivalent.AccuracyCO2: ±40 ppm +3% of reading.Temperature Dependence±8 ppm / °C at 1100 ppm.Non-LinearityCO2: 16 ppm.Pressure DependenceCO2: 0.13% of reading per mm of Hg.Response TimeCO2: 2 minutes for 99% step change; VOC: 5 minutes.Temperature Limits32 to 122°F (0 to 50°C).Power Requirements16 to 35 VDC / 19 to 28 VAC.Power ConsumptionAverage: 2 watts; Peak: 3.75 watts.SensorCO2: Single-beam, dual-wavelength NDIR; VOC: MEMS metal oxide semiconductor.OutputCurrent: 0 to 20 mA, 4 to 20 mA, 0 to 10 mA, or 2 to 10 mA (depending on selection jumper, max 500 Ω); Voltage: 0 to 10 VDC, 2 to 10 VDC, 0 to 5 VDC, or 1 to 5 VDC (depending on selection jumper, min 500 Ω); Relay: SPST NO 2A @ 30 VDC.Weight5.6 oz (158.8 g). Enclosure RatingDuct mount: NEMA 4X (IP66) for housing only; Wall mount: IP20.Agency ApprovalsCE.SERIES CDTV | CARBON DIOXIDE/VOLATILE ORGANIC COMPOUND TRANSMITTERImportant Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.®dwyer-inst.comDWYER INSTRUMENTS, INC.DS-CDWP Rev. 2 | 3/19T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141DIMENSIONSWIRING DIAGRAMHOW TO ORDERSERIESCDTV: CO2/VOC transmitterGAS CONCENTRATION RANGE-2: 0 to 2,000 ppm CO2 range-5: 0 to 5,000 ppm CO2 rangeHOUSING CONFIGURATIOND: DuctN: North American style (wall)CO2 OUTPUT4: 4 to 20 mA / 0 to (5 or 10) VDCVOC OUTPUT4: 4 to 20 mA / 0 to (5 or 10) VDCTEMPERATURE OUTPUT0: NoneA: 10 KΩ NTC thermistor type IIIB: 10 KΩ NTC thermistor type IIC: 3 KΩ NTC thermistorD: Pt100 Ω RTDE: Pt1000 Ω RTDF: 20 KΩ NTC thermistorOPTIONS-RLY: Relay-FC: Factory calibration certificate-LCD: LCD display (wall only)-COC: Certificate of calibrationCDTV-RLY04-2D4Use the bold characters from the chart below to construct a product code.1/8˝[3.17]4-25/32˝[121.44]4-9/32˝[108.74]2-13/16˝[71.44]Ø3-5/16˝[84.14]11-49/64˝[298.85]Ø1-15/64˝[31.35]1.10[27.96]3.000[76.20].552[14.02]2x .176[4.47].573[14.56]4.50[114.30]2.80[71.12]North American style wall mountActive output wiring diagramDuct MountPASSIVETEMPERATURESENSORRELAYCONTACTPOWERSUPPLYVOCRECEIVERCO2RECEIVERNext >