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SPECIFICATIONS
CARBON DIOXIDE SENSOR
Measurement Type ...................Non-Dispersive Infrared (NDIR), diffusion sampling
Measurement Range ................0-2000 ppm
Standard Accuracy ....................±30 ppm @ 1000 ppm @ 22°C (72°F) compared to certified calibration gas
Temperature Dependence .....0.2 %FS per °C
Stability .........................................<2 %FS over life of sensor (15 years typical)
Pressure Dependence ..............0.13% of reading per mm Hg
Altitude Correction ...................Programmable from 0-5000 ft via Modbus
Response Time ...........................<2 minutes for 90% step change typical
Warm-up Time ............................<2 minutes
INTERFACE
Hardware ......................................2 wire RS-485
Software ........................................Native Modbus MS/TP protocol (RTU or ASCII)
Baud Rate .....................................Locally set to 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 76800
MAC Address Range .................Locally set to 1-255 (factory default is 1),
(255 devices max on one daisy chain)
LCD DISPLAY
Resolution ....................................1 ppm CO
2
, 1 %RH, 0.1°C (0.1°F)
Size ..................................................35mm W x 15mm H (1.4" x 0.6") alpha-numeric 2 line x 8 characters
Backlight .......................................Enable or disable via keypad
OPTIONAL TEMPERATURE SENSOR
Sensing Element ........................10K thermistor, ±0.2°C (±0.4°F)
Resolution ....................................0.1°C (0.2°F)
Range .............................................0 to 35°C (32 to 95°F)
OPTIONAL RELATIVE HUMIDITY SENSOR
Sensor ............................................Thermoset polymer based capacitive
Accuracy .......................................±2 %RH
Range .............................................0-100 %RH, non-condensing
Resolution ....................................1 %RH
Hysteresis .....................................±3 %RH
Response Time ...........................15 seconds typical
Stability .........................................±1.2 %RH typical @ 50 %RH in 5 years
OPTIONAL RELAY OUTPUT
Contact Ratings ..........................Form A contact (N.O.), 2 Amps @ 140 Vac, 2 Amps @ 30 Vdc
Relay Trip Point ...........................Programmable 500 to 1500 ppm via Modbus
Relay Hysteresis..........................Programmable 25 to 200 ppm via Modbus
GENERAL
Power Supply ............................... 20 to 28 Vac/dc (non-isolated half-wave rectified)
Consumption ............................... 80 mA max @ 24 Vdc, 140 mA max @ 24 Vac with all options
Protection Circuitry ................... Reverse voltage protected, overvoltage protected
Sensor Coverage Area ..............100 m
2
(1000 ft
2
) typical
Operating Conditions ............... 0 to 50°C (32 to 122°F), 0 to 95 %RH non-condensing
Optional Override Switch........ Front panel push-button available as Modbus register
Optional Set-point Control ..... Front panel push-buttons available as 0 to 100%, 30 to 70 %RH,
500 to 1500 ppm, 18 to 24°C, 10 to30°C, 16 to 26°C 67 to 73°F,
or 60 to 80°F as Modbus register
Wiring Connections ................... Screw terminal block (14 to 22 AW)
Enclosure ....................................... White ABS, IP30 (NEMA 1)
84mm W x 117mm H x 29mm D (3.3" x 4.6" x 1.15")
Country of Origin ........................ Canada
DIMENSIONS
84 mm
3.3“
119 mm
4.7“
29 mm
1.15 “
82.6 mm
3.25 “
58 mm
2.3 “
IN-GE-CDD3B1XXXMOD-01-03 11/19 Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: +1 506 853 3057 Web: www.greystoneenergy.com
