Carbon Dioxide t ransmitters air quality the Series cdw wall Mount Carbon Dioxide/Temperature Transmitter

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147

Carbon Dioxide T

ransmitters

AIR QUALITY

The Series CDW Wall Mount Carbon Dioxide/Temperature Transmitter

combines accurate CO2 measurements with a passive temperature output. The Non-

Dispersive Infrared (NDIR) sensor continuously updates the calibration through a

proprietary logic feature which limits the amount of error due to drift. The CDW series

is ideal  for building automation systems to help control the fresh air intake in a room.

SPECIFICATIONS

Range: 0 to 2000 PPM CO

2

. 

Accuracy: ±100 PPM @ 22°C.

Temperature Dependence: 0.2% FS

per °C stability < 2% of FS mover life of

sensor.

Non-linearity: < 1% of FS.

Pressure Dependence: 0.13% of

reading per mm of Hg.

Response Time: 3 to 5 minutes for

90% step change.

Ambient Operating Temperature: 32

to 122°F (0 to 50°C).

Storage Temperature: -4 to 158°F

(-20 to 70°C).

Power Requirements: 18 - 30 VAC

RMS 50/60 Hz, 18 to 42 VDC polarity

protected.

Power Consumption: 1.75 VA

average 3.25 VA peak.

Sensor: Non-dispersive infrared

sensor.

Output: 0 to 10 VDC for CO

2

; 20K ohm

NTC thermistor for temperature.

Weight: 0.5 lb (227 g).

Agency Approval: CE.

Series

CDW

Wall Mount Carbon

Dioxide/Temperature Transmitter

Measure up to 2000 PPM, NDIR Sensor

3-7/32

[81.76]

1-5/64

[27.61]

1-1/4

[31.75]

1-9/32

[32.51]

1/4

[6.35]

19/32

[15.14]

3-35/64

[90.04]

3-31/32

[100.84]

4-5/8

[117.48]

CL

6

6

Model CDW, Wall Mount CO

2

/Temperature Transmitter

Model CDW-LED, Standard Model with LED Option

Duct Mount Carbon Dioxide Transmitter

NDIR Sensing Technology, 2000 PPM Range

Model

CDD

The Model CDD Duct Mount Carbon Dioxide Transmitter monitors the occupancy

in a room by detecting the concentration of carbon dioxide in the return air duct. The non-

dispersive infrared sensing technology automatically updates the calibration of the

transmitter using a proprietary logic feature which limits the amount of error due to drift.

The Model CDD can measure up to 2000 PPM in duct air flows less than 1500 FPM.

SPECIFICATIONS

Range: 0 to 2000 PPM.

Accuracy: ±40 PPM + 3% of reading

@ 22°C.

Temperature Dependence: 0.2% FS

per °C.

Stability: < 2% of FS over life of

sensor.

Non-Linearity: < 1% of FS.

Pressure Dependence: 0.13% of

reading per mm of Hg.

Response Time: 3 minutes typical for

90% step change.

Duct Air Velocity Range: 0 to 1500

FPM (7.63 m/s).

Ambient Operating Temperature: 32

to 122°F (0 to 50°C).

Storage Temperature: -4 to 158°F 

(-20 to 70°C).

Power Requirements: 18 to 30 VAC

RMS 50/60 Hz or 18 to 42 VDC.

Power Consumption: 1.65 watts peak

(0.65 watts average at 42 VDC).

Outputs: 0 to 10 VDC.

Housing: Flammability classification

UL rated 94V-5VA.

Weight: 8 oz (230 g).

1-39/64

[40.88]

3-1/32

[77]

1-1/8

[28.58]

4-1/8

[104.78]

ø1-1/4

[ø31.7]

4X KNOCKOUT 1/2˝ CONDUIT HOLE

2X Ø7/32

[2X Ø5.56]

3-1/16

[77.79]

4-31/32

[126.21]

5-11/16

[144.46]

Model CDD, Carbon Dioxide Transmitter

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