Series CDT Carbon Dioxide/Temperature Transmitter, Wall Mount, Carbon Dioxide Output 0 to 5 vdc, 0 to 10 vdc, 4 to 20 ma, 2000 ppm, Temperature Output 10 kOhms Type 2 NTC Thermistor, with LCD
NDIR Sensor, Universal Outputs, Optional Relay
Series CDT Carbon Dioxide and Temperature Transmitters accurately monitor the CO2 concentration and temperature in schools, office buildings, and other indoor environments to help achieve LEED® certification. For increased sensor accuracy, a single-beam dual-wavelength non-dispersive infrared (NDIR) sensor is used to automatically correct the measurement in both occupied and unoccupied buildings against light source aging effects. The single-beam dual-wavelength sensor technology provides the highest level of accuracy compared to Automatic Baseline Correction methods which can unintentionally shift the calibration based on CO2 levels and barometric pressure conditions. In order to achieve a higher level of accuracy, the Series CDT includes digital barometric pressure adjustment and the ability to field-calibrate the sensor.
To prevent tampering, the action of the buttons can be locked out using an internal dip switch selection. Menu items that can be accessed via the push buttons include: engineering units, relay output set points, display configuration, transmitter output scaling, ambient barometric pressure, and field calibration of the transmitter.
Single beam dual-wavelength sensor advantages:
- Automatically corrects for aging effects in occupied and unoccupied building
- Perfect for hospitals and manufacturing plants that are occupied 24 hours per day
- Measures actual unfiltered light intensity directly
- Eliminates error from incorrect assumptions of gas concentration in theoretical logic assumption methods
- CE Approval (CDT-E/N)
- CE Approval (Duct)
- RoHS Approval