CDDT GREYSTONE | Alldatasheet
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GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM DUCT CARBON DIOXIDE TRANSMITTER CDDT SERIES PRODUCT DESCRIPTION The CO2 transmitter uses Infrared Technology to monitor CO2 levels and outputs a linear 4-20 mA or 0-5/0-10 Vdc signal. Options include a control relay and a resistive temperature sensor. Features include a back-lit LCD and user menu for easy installation. TYPICAL INSTALLATION For complete installation and wiring details, please refer to the product installation instructions. The duct type sensor installs on the outside of a return air duct with the sampling tube inserted into the duct. Mount the sensor in an easily accessible location in a straight section of duct at least five feet from corners and other items that may cause disturbances in the air flow. Avoid areas with vibrations or rapid temperature changes. The enclosure provides mounting tabs for ease of installation. POWER SUPPLY 20 - 28 Vac/dc (non-isolated half-wave rectified) CONSUMPTIONS Current: 120 mA max @ 24 Vdc, 212 mA max @ 24 Vac Voltage: 79 mA max @ 24 Vac, 129 mA max @ 24 Vac OUTPUT SIGNALS 4 - 20 mA active (sourcing) or 0-5 Vdc / 0-10 Vdc (field selectable) OUTPUT DRIVE CAPABILITY Current: 550 Ω maximum Voltage: 5K Ω minimum OUTPUT RESOLUTION 10 bit PWM INPUT VOLTAGE EFFECT Negligible over specified operating range PROTECTION CIRCUITRY Reverse voltage protected, overvoltage protected WIRING CONNECTIONS Screw terminal block (14 to 22 AWG) ENCLOSURE IP65 (NEMA 4X) LCD Resolution: 1ppm CO2 Size: 35mm W x 15mm H (1.4” x 0.6”) Backlight: Enable or disable via keypad MEASUREMENT TYPE Dual Channel, Non-Dispersive Infrared (NDIR), diffusion sampling MEASUREMENT RANGE 0-20,000ppm, programmable span STANDARD ACCURACY +75ppm (400-1000 ppm) >1000 ppm, 10% of reading TEMPERATURE DEPENDENCE 0.2% F.S. per °C STABILITY (0-20,000ppm) <5 %F.S. over life of sensor (10 years typical) PRESSURE DEPENDENCE 0.13% of reading per mm Hg ALTITUDE CORRECTION Programmable from 0-5000ft via keypad RESPONSE TIME <2 minutes for 90% step change typical WARM-UP TIME <2 minutes SENSING ELEMENT Various RTD’s or thermistors as 2 wire resistance output CONTACT RATINGS Form A contact (N.O.), 2 Amps @ 140 Vac, 2 Amps @ 30 Vdc RELAY TRIP POINT Programmable via keypad RELAY HYSTERESIS Programmable via keypad APPROVALS CE, RoHS COUNTRY OF ORIGIN Canada SPECIFICATIONS CABLE GLAND FITTING THREAD ADAPTER 1/2” NPT TO M16 ACCESSORIES - INCLUDED WITH F ENCLOSURE OPTION 116.5 mm 4.585" 99.7 mm 3.93" 0.5" NPT 112.5 mm 4.43" 53.7 mm 2.11" 152 mm 22.5 mm 0.88"
PRINTED IN CANADA Copyright © Greystone Energy Systems Inc. All Rights Reserved www.greystoneenergy.com PS-CDDTXXX-03 Greystone Energy Systems, Inc.
150 English Drive, Moncton,
New Brunswick, Canada E1E 4G7 Ph: +1 (506) 853-3057 Fax: +1 (506) 853-6014 North America: 1-800-561-5611 E-mail: mail@greystoneenergy.com PRODUCT CDDT Duct Carbon Dioxide Transmitter ENCLOSURE B F Polycarbonate with hinged and gasketed cover Same as B, with thread adapter (1/2” NPT to M16) & cable gland fitting CO2 SENSING & RANGE 2 Dual Channel, Non-Dispersive Infrared (NDIR), diffusion sampling, 0-20,000ppm, adjustable RELAY OUTPUT X R No relay Relay OPTIONAL TEMPERATURE SENSOR 00 No Sensor Option 100 Ω Platinum, IEC 751, 385 Alpha, thin film 1801 Ω NTC Thermistor, ±0.2°C 3000 Ω NTC Thermistor, ±0.2°C 10,000 Ω Type 3, NTC Thermistor, ±0.2°C 2.252 Ω NTC Thermistor, ±0.2°C 1000 Ω Platinum, IEC 751, 385 Alpha, thin film 1000 Ω Nickel, Class B, DIN 43760 10,000 Ω Type 3, NTC Thermistor, ±0.2°C c/w 11K shunt resistor 20,000 Ω NTC Thermistor, ±0.2°C 10,000 Ω Type 2, NTC Thermistor, 0.2°C ORDERING CDDT PART NUMBER WIRING INFORMATION TERMINAL FUNCTION PWR +24 Vac/dc COM Common CO2 Analog Output TEMP Resistance Output TEMP A Resistance Output NO Digital Output RELAY Digital Output NOTE: Greystone Energy Systems, Inc. reserves the right to make design modifications without prior notice. POWER COMMON CO2 TEMP TEMP A N.O. RELAY ROLL MENU mA VOLT