CDT-2N40 | Carbon Dioxide | Wall Mount | universal current/voltage output | North American Housing. | Dwyer
Carbon Dioxide, Wall Mount, universal current/voltage output, North American Housing.
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Overview
Details for CDT-2N40
Carbon Dioxide | Wall Mount | universal current/voltage output | North American Housing.
SERIES CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTER
The Series CDT Carbon Dioxide and Temperature Transmitters accurately monitorthe CO2 concentration and temperature in indoor environments to help achieve energysavings. In order to achieve a higher level of accuracy, the Series CDT includesbarometric pressure adjustment. The CO 2 universal output allows users to select thetransmitter output to be 4-20 mA, 0-5 VDC, or 0-10 VDC to work with virtually anybuilding management controller.
For applications that require visual indication, the wall mount configurations of theSeries CDT can be ordered with an integral LCD display. To prevent tampering, theaction of the buttons can be locked out using an internal dip switch selection.
*For buildings occupied 24 hours per day, it is recommended that calibration be verified every 6 to 12 months depending on application.
For models with resistive thermistors or RTD outputs, please click here for temperature to resistance lookup tables.
Product Applications
- Demand control ventilation in schools, office buildings, hospitals, and other indoorenvironments
- LEED® certification
- Minimize inventory and save time by combining CO 2 and temperaturemeasurements into one transmitter
- Requires minimal maintenance with Automatic Baseline Correction (ABC) to accountfor sensor drif
- Reduce operation costs using a low energy, reliable, and repeatable CO 2 sensor
- Simplify installation with backplate electrical connection
Specifications
- Series
- CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTER
- Sensor
- NDIR; 15 year life expectancy.
- Range
- CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Temperature: 32 to 122°F (0 to 50°C).
- Accuracy*
- CO2: ±40 PPM + 3% of reading (2000 PPM CO2); ± 50 PPM + 5% of reading (5000 PPM CO2); Temperature: ±1°C @ 25°C.
- Response Time
- 2 min for 99% step change.
- Temperature Limits
- 32 to 122°F (0 to 50°C).
- Humidity Limits
- 0 to 85% (non-condensing).
- Power Requirements
- 16 to 35 VDC or 19 to 28 VAC.
- Power Consumption
- Average: 2 w; Peak: 3.75 w.
- Output
- Current: 4-20 mA (max. 500 Ω); Voltage: 0-5 VDC or 0-10 VDC (min. 500Ω); Relay: SPST NO rated 2A @ 30 VDC; RTD or thermistor per r-t curves on page4 (depending on model).Relay: SPST NO rated 2 A @ 30 VDC; RTD or thermistor per r-t curves on page 4 in catalog (depending on model).
- Compliance
- CE.
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