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Description:
<p><strong>The Model CDD Duct Mount Carbon Dioxide Transmitter </strong> 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. </p> <strong>Product Applications </strong> <ul> <li>On demand room ventilation. </li> </ul>
Attributes
| Key ^ | Value |
|---|---|
| Accuracy | ?40 PPM + 3% of reading @ 22 ?C. |
| Ambient Operating Temperature | 32 to 122 ?F (0 to 50 ?C). |
| Duct Air Velocity Range | 0 to 1500 FPM (7.63 m/s). |
| Housing | Flammability Classification UL rated 94V-5VA. |
| Non-Linearity | < 1% of FS. |
| Outputs | 0 to 10 VDC. |
| Power Requirements | 18 to 30 VAC RMS 50/60 Hz or 18 to 42 VDC. |
| Pressure Dependence | 0.13% of reading per mm of Hg. |
| Range | 0 to 2000 PPM. |
| Response Time | 3 minutes typical for 90% step change. |
| Stability | < 2% of FS over life of sensor. |
| Storage Temperature | -4 to 158 ?F (-20 to 70 ?C). |
| Temperature Dependence | 0.2% FS per ?C. |