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PRINTED IN C

ANAD

A       

Page  7

SPECIFICATIONS

Gas Type Detected .................................................Carbon dioxide (CO

2

)

Sensor Type ..............................................................Dual channel non-dispersive infrared (NDIR)

Sensor Accuracy ......................................................±(30 ppm + 3% of measured value)

Measurement Range .............................................0-2000 ppm (default), adjustable 1000-10,000 ppm

Pressure Dependency ...........................................< ±2.5ppm/°C

Response Time ........................................................20 seconds (T63)

Warm-Up Time .........................................................1 minute

Sensor Life Span......................................................>15 years

Transmitter Accuracy ............................................±0.25% of span

 

(including linearity, hysteresis and repeatability)

Power Supply ...........................................................24 Vdc ±20% or 24 Vac ±10%

 

(non-isolated half-wave rectified)

Protection Circuitry ................................................Reverse voltage and transient protected

Input Voltage Effect ...............................................Negligible over specified operating range

Output Signal Type ................................................4-20 mA (3-wire), 0-5 or 0-10 Vdc (field selectable)

Current Consumption ...........................................

Current:

 75 mA @ 24 Vdc max, 150 mA @ 24 Vac max

 

Voltage:

 50 mA @ 24 Vdc max, 100 mA @ 24 Vac max

Output Drive @ 24 Vdc .........................................

Current:

 550Ω max

 

Voltage:

 10,000Ω min

Ambient Operating Range ..................................0 to 50°C (32 to 122°F), 0 to 95 %RH non-condensing

Storage Conditions ................................................-40 to 70°C (-40 to 158°F), 0 to 95 %RH non-condensing

LCD Display Units ...................................................ppm (CO

2

), °C/°F for optional temperature/setpoint

Display Range ..........................................................0-10,000 ppm, 0 to 50°C / 0 to 122°F

Display Size ...............................................................35mm W x 15mm H (1.4" x 0.6")

Digit Height ..............................................................2-line x 8 character

OPTIONAL TEMPERATURE SENSOR

Type .............................................................................Thermistor or RTD

Accuracy ....................................................................

Thermistors:

 ±0.2°C (±0.36°F) @ 25°C (77°F)

 

Platinum RTD's:

 ±0.3°C (±0.54°F) @ 0°C (32°F)

 

Nickel RTD's:

 ±0.4°C (±0.72°F) @ 0°C (32°F)

Output ........................................................................2-wire resistive

Relay (Optional 2-wire output) ..........................Form A (N.O.), 2 Amps @ 140 Vac / 30 Vdc

Enclosure ...................................................................Polycarbonate UL94-V0 (NEMA 4X)

 

116mm W x 100mm H x 54mm D (4.6" x 3.9" x 2.1")

Wiring .........................................................................Screw terminal block (14 - 22 AWG)

Approvals ..................................................................CE

Country of Origin .......................................................Canada

DIMENSIONS

112.5 mm

4.43"

53.7 mm

2.11"

152 mm

6"

22.5 mm

0.88"

116.5 mm

4.58"

99.7 mm

3.93"

0.5" NPT

Copyright © Greystone Energy Systems, Inc.   All Rights Reserved    Phone:  +1 506 853 3057  Web: www.greystoneenergy.com

IN-GE-CD2DTXXX-03

Summary of Contents for CD2DT Series

Page 1: ... intended for life safety applications NOTE This CO2 sensor incorporates a Self Calibration feature to correct CO2 sensor drift This feature is recommended for applications where the CO2 will be exposed to fresh air 400 ppm at least one hour per day If the monitored space is occupied 24 hours or consistently maintains higher or lower levels of CO2 it is recommended that this feature be turned off ...

Page 2: ...ram See Figure 5 This is a 3 wire sourcing device Connect the plus DC or the AC voltage hot side to the PWR terminal and the common is connected to the COM terminal The device is reverse voltage protected and will not operate if connected backwards It has a half wave power supply so the supply common is the same as the signal common Several devices may be connected to one power supply and the outp...

Page 3: ...ired SETUP MENU The device has several parameters that can be configured locally via the Setup menu using the keypad and LCD Any changes made are saved in non volatile memory and are restored in case of a power loss The menu can be accessed at any time after the start up mode and if there is 5 minutes of inactivity the menu will close and normal operation will continue To enter the menu press and ...

Page 4: ...actual output signal will depend on the PCB switch position mA or VOLT and the V Output setting for voltage operation Press MENU to set it back to OFF and advance Factory default is OFF MENU Press to advance to next menu item MENU Press to advance to next menu item 6 OUTPUT TEST Temp Units C Display CO2 ppm CO2 1235 ppm Temp 24 3 C 1235 ppm 24 3 C CO2 1235 ppm Temp 24 3 C The Temp Units setting is...

Page 5: ...nge the setting within the limits as shown in the table Note that only the one previous selection will be available Note that a high alarm activates when the measurement exceeds the setpoint and a low alarm activates when the measurement goes below the setpoint Use MENU to save and advance or 12 RELAY SETPOINT RELAY ASSIGNMENT DEFAULT SETPOINT SETPOINT RANGE RESOLUTION Temp High 26 0 C 79 0 F 5 0 ...

Page 6: ...ue Another method is to determine the CO2 ambient level using a calibrated unit as a reference and adjust calibration setting to desired value MENU Press to advance to exit the Setup Menu and return to normal mode 17 CALIBRATE 16 CALIBRATE CALIBRATION Calibration with gas requires a field calibration kit with pressure regulator tubing sensor adapter and bottle of CO2 gas The certified calibration ...

Page 7: ...ve 24 Vdc Current 550Ω max Voltage 10 000Ω min Ambient Operating Range 0 to 50 C 32 to 122 F 0 to 95 RH non condensing Storage Conditions 40 to 70 C 40 to 158 F 0 to 95 RH non condensing LCD Display Units ppm CO2 C F for optional temperature setpoint Display Range 0 10 000 ppm 0 to 50 C 0 to 122 F Display Size 35mm W x 15mm H 1 4 x 0 6 Digit Height 2 line x 8 character OPTIONAL TEMPERATURE SENSOR ...

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