®dwyer-inst.comDWYER INSTRUMENTS, INC.T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141SERIES CDTA | COMMUNICATING CARBON DIOXIDE DETECTOR FEATURES/BENEFITS• Digital Intelligent Temperature Compensation Algorithm (DITCA™) corrects for errors due to self heating effects of combination wall sensors• Field selectable Modbus® and BACnet communications reduces wiring• Single beam dual wavelength CO2 sensor• Replaceable humidity/temperature sensor• Physical hardware lockout• Optional remote display toolAPPLICATIONS• Demand control ventilation in schools, office buildings, hospitals, and other indoor environments• LEED® certificationDESCRIPTIONThe SERIES CDTA Communicating Carbon Dioxide Detector combines the function of three room sensors into a single, compact housing. Parameters include carbon dioxide, humidity, temperature, and temperature set point with override. By having field selectable Modbus® and BACnet Communications, only four wires are needed for power and the communication signal. The communicating detectors can be daisy chained together to further reduce installation cost. In order to reduce the set up time, the RS-485 MAC address is set up using on board dip switches. A second set of dip switches are used to select whether output is Modbus® RTU or BACnet MS/TP communication protocols and to limit access to the set up menu.SPECIFICATIONSSensor (CO2)Single beam, dual wavelength NDIR; Humidity: Capacitive polymer; Temperature: 10KΩ thermistor.RangeCO2: 0 to 2000 or 5000 PPM CO2 (depending on model); Humidity: 0 to 100% RH; Temperature: 32 to 122°F (0 to 50°C).AccuracyCO2: ±40 ppm ±3% of reading; RH: ±2% (10 to 90% RH); Temperature: ±1°C @ 25°C.Temperature Dependence (CO2)±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.Temperature Limits32 to 122°F (0 to 50°C).Humidity Limits10 to 95% RH (non-condensing).Power Requirements10 to 42 VDC / 10 to 30 VAC.Power Consumption0.5 watts; Peak: 1.2 watts.Output2-wire RS-485, Modbus® RTU or BACnet MS/TP communication protocol.Weight4.4 oz (125 g).Enclosure RatingIP20.Agency ApprovalsBTL, CE.European StyleNorth American Style®dwyer-inst.comDWYER INSTRUMENTS, INC.T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141Important 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.DS-CDTA | 2/18TO PREVIOUS DEVICETO NEXT DEVICETO PREVIOUS DEVICETO NEXT DEVICEPOWERSUPPLY3.65[92.72]3.56[90.42]1.08[27.33]4.50[114.30]2.80[71.12]1.10[27.96]DIMENSIONSWIRING DIAGRAMHOW TO ORDERSERIESCDTA: Carbon monoxide transmitterRANGE-2: 0 to 2000 PPM-5: 0 to 5000 PPMHOUSING STYLE-N000: North American-E000: European OPTIONS-LCD: Display-FC: Factory calibration certificateCDTA-2N000-LCDUse the bold characters from the chart below to construct a product code.ACCESSORIESModelDescriptionGCK-200CO-2000CO2A-449A-449AA-CDT-KITCalibration gas kitRemote LCD displayRemote LCD display with buttonsAccessory kit including terminal block and power supplyModbus® is a registered trademark of Schneider Automation, Inc.Next >