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Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
Series CDT Carbon Dioxide/Temperature Transmitter
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Series CDT Carbon Dioxide/Temperature Transmitter

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  • 1. Series CDTCarbon Dioxide Transmitter The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2011 Dwyer Instruments, Inc
  • 2. General SpecificationsSeries CDT Wall Mount Available Now, Duct and OSA Available Summer 2011 Range: 0 to 2000 PPM or 0 to 5000 PPM Accuracy: +/- 3 % of reading +/- 40 PPM Output: Field Selectable 0 to 10(5) VDC / 4 to 20 mA for CO2 and Temperature Optional Passive Temperature Outputs via Separate Terminal Board for Wall Mount Optional Relay for CO2
  • 3. General SpecificationsSensor Type: Non-Dispersive InfraredSingle Beam Dual Wavelength Technology Self Corrects for Drift Due to Light Source Aging Field Calibration Using Calibration Kit (Dwyer Calibration Gas Tanks Available For Sale in Approved Countries)
  • 4. NDIR Sensor Technology
  • 5. NDIR Sensor TechnologySingle Beam – Single Wavelength Telaire, Sense Air (ACI, Greystone, Thermokon, and Veris use Telaire or Sense Air Sensor Modules) Single Light Source and Single Receiver with ABC Logic Self CalibrationAdvantages: Lowest Cost Solution Acceptable Accuracy For Most ApplicationsDisadvantages: Can’t Calibrate Itself in Buildings Occupied 24hrs / day Additional Error from Logic 400 PPM Assumption
  • 6. NDIR Sensor TechnologyDual Beam – Single Wavelength E+E, Vulcain (Honeywell Owned), Siemens Two Light Sources and Single Receiver Using Second Light Source as ReferenceAdvantages: Can Self Calibrate In Occupied Buildings Less Expensive SensorDisadvantages: Doesn’t Account for Aging of Second Light Source
  • 7. NDIR Sensor TechnologySingle Beam – Dual Wavelength Dwyer, Vaisala Single Light Source With Two Wavelength Filters Where One Filter Monitors the Light and Other Measures CO2Advantage: Self Calibrates in Occupied Buildings Calibration Monitors Actual Light Aging EffectDisadvantage: Most Expensive Of Sensor Technologies
  • 8. Features and BenefitsField Calibration with Jumper Lockout Allows Qualified Users to Adjust Calibration to Insure Most Accurate Sensor Possible Eliminates Building Occupants from Mistakenly Changing CalibrationField Selectable Outputs Eliminates Chance of Customer Ordering Incorrect Models Allows Transmitter to Work With Most BMS Controllers
  • 9. Features and BenefitsTerminal Block On Back Plate Customer Can Change Transmitter Without Requiring Electrician Back Plate Can Be Installed Without Risk of Transmitter Being Damaged or Lost During Rough InLocal and Remote Display Allow Customer to Access Calibration and Set Up Menus Can be Configured Not to Display CO2 for Daily Use Same Remote Display for Whole BAS Wall Mount Family
  • 10. Features and BenefitsOn Board RTD Temperature Sensor Able to View Ambient Temperature on All ModelsLarge Vents in Housing Along With Placement of Sensor, Creates More Air Flow Across Sensor For Greater AccuracyOptional Relay Can Turn On Fan In Case CO2 Level Too HighField Selectable Engineering Units Universal Product Platform for US and Overseas Customers
  • 11. Features and BenefitsBarometric Pressure Compensation Allows Users Above Sea Level to Correct For Barometric Pressure to Insure Most Accurate ReadingOutput Scaling Allows Users to Achieve Greater Resolution by Using a More Custom Temperature and CO2 RangePush Button Calibration Reduces Time it Takes to Calibrate TransmittersLow Price
  • 12. Applications Carbon Dioxide Transmitters are used as an indication of the level of occupancy in a multiuse room such as a conference room
  • 13. Application Carbon Dioxide Transmitters are commonly used in schools to insure enough fresh air is being supplied to the classrooms
  • 14. Applications Carbon Dioxide Transmitters are used in underground parking Garages in areas where diesel engine vehicles are prevalent
  • 15. QuestionsTo order a free catalog or for more information contact; Dwyer Instruments, Inc., P.O. Box 373, Michigan City, IN., 46361 Telephone: (800) 872-9141 or (219) 879-8000 Fax: (219) 872-9057 Internet address: www.dwyer-inst.com E-mail: info@dwyer-inst.com

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