Greystone Energy Systems CDD4 Series Catalog Page

CARBON DIOXIDE & TEMPERATURE

DETECTORS

CDD4 Series

Room w/Setpoint,

Override & LCD

Duct Outside

Room w/ No Options

Precision carbon dioxide
control/sensing

FEATURES:

• Space, Duct & Outside Models

• 2 Available Ranges

• CO2, Temperature Outputs

• Optional Slidepot and/or Override
Optional On-board Relay

•

• Optional LCD Display

• Custom Logos Available

GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

Peace of mind

through reliable

gas monitoring

CO

DETECTOR w/ Optional Temperature Sensor

2

SPECIFICATIONS:

General Specications:

Power Supply..................................................... 20-28 Vac/dc (non-isolated half-wave rectied)

Output Signals................................................... 4-20 mA active (sourcing), 0-5 Vdc or 0-10 Vdc (eld selectable)

Consumption..................................................... Space/Duct/Outside: 100 mA max @ 24 Vdc,

185 mA max @ 24 Vac (with all options)
Outside w/ Heater: 1A max @ 24Vdc, 1.1A max @ 24 Vac

Output Drive Capability.........................................Current: 550 ohms max Voltage: 10 Kohm min

Output Resolution ........................................... 10 bit PWM

Protection Circuitry.......................................... Reverse voltage protected, overvoltage protected

Operation Conditions..................................... Space (10), Duct (20) and Outside (40): 0˚- 50°C (32˚-122°F),

0-95% RH non-condensing.
Outside w/ Heater (30): -40˚- 50°C (-40˚- 122°F), 0-95% RH non-condensing.

Sensor Coverage Area .................................... 100 m² (1000 ft²) typical

Wiring Connections.........................................

External Dimensions ....................................... Space:

Duct: 145mm W x 100mm H x 63mm D (5.7” x 3.95” x 2.5”)
Duct Probe: 177mm (7“) long x 25.4mm (1”) diameter

Enclosure Ratings............................................. Space: IP30 (NEMA 1)

Duct: IP65 (NEMA 4X)
Outside: IP65 (NEMA 4X)

CO2 Specications:

Measurement Type..................................................CDD4A: Non-Dispersive Infrared (NDIR), diusion sampling

CDD4B: Dual Channel Non-Dispersive Infrared (NDIR), diusion sampling
Measurement
CDD4B: 0 - 20,000 ppm, programmable span from 2000 to 20,000 ppm

Standard Accuracy........................................... CDD4A: ±30 PPM + 3% of reading with Auto Cal on.

CDD4B: ±75 PPM or 10% of reading (whichever is greater)

Temperature Dependence............................ 0.2% FS per °C

Stability................................................................ CDD4A: < 2 % FS over life of sensor (15 years typical)

CDD4B: < 5 % 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 keypad

Response Time................................................... <2 minutes for 90% step change typical

Warm-up Time................................................... <2 minutes

Range......................................... CDD4A: 0 - 2000 ppm

Screw terminal block (14 to 22 AWG)

84mm W x 119mm H x 29mm D (3.3” x 4.7” x 1.15”)

Outside:

110mm W X 180mm H X 89mm D (7.125” X 4.33” X 3.5”)

LCD Display:

Resolution...........................................................

Size.........................................................................

Backlight..............................................................

Optional Temperature Signal:

Sensing Element...............................................

Optional Setpoint Adjustment

Type....................................................................... Front panel slidepot, 2 wire resistance output

Range.................................................................... 0K to 10K Ω standard

Custom spans available ................................. 1K, 2K, 5K, 10K or 20K Ω

Optional Manual Override

Type....................................................................... Front panel, momentary pushbutton

Ratings.................................................................. 50 mA @12 Vdc, N.O., SPST

Optional Relay Output:

Contact Ratings.................................................

Relay Trip Point.................................................. CDD4A:

Relay Hysteresis ................................................ CDD4A:

1 ppm CO2

1.4” w x 0.6” h (35 mm x 15 mm) alpha-numeric 2 line x 8 character
Enable or disable via keypad

Various RTDs or thermistors as a 2-wire resistance output (See ordering chart)

Form A contact (N.O.), 2 Amps @ 140 Vac, 2 Amps @ 30 Vdc

Programmable 500-2000 ppm via keypad

CDD4B:

CDD4B:

Programmable 500-15,000 ppm via keypad
Programmable 25-200 ppm via keypad
Programmable 25-500 ppm via keypad