DWYER CDT-2D40 Carbon Dioxide Detector Transmitter

AIR QUALITY SERIES CDT CARBON DIOXIDE/TEMPERATURE TRANSMITTERS NDIR CO2 Sensor, Universal Outputs, Optional Relay YEAR LIMITED WARRANTY 1.10 [27.96] .552 [14.02] 2x .176 [4.47] 4.50 3.000 [114.30] [76.20] .573 [14.56] 2.80 [71.12] 11-49/64˝ 4-25/32˝ [298.85] 1/8˝ [121.44] [3.17] 4-9/32˝ [108.74] 2-13/16˝ North American style DSA* compliant option -S Duct [71.44] Ø1-15/64˝ [31.35] VIDEO ON NE Ø3-5/16˝ LI [84.14] *Division of the State Architect - California The Series CDT Carbon Dioxide and Temperature Transmitters accurately monitor SPECIFICATIONS the CO2 concentration and temperature in indoor environments to help achieve energy savings. In order to achieve a higher level of accuracy, the Series CDT includes Sensor: NDIR, 15 year life expectancy. barometric pressure adjustment. The CO2 universal output allows users to select the Range: CO2: 0 to 2000 or 0 to 5000 PPM (depending on model); Temperature: 32 transmitter output to be 4-20 mA, 0-5 VDC, or 0-10 VDC to work with virtually any to 122°F (0 to 50°C). building management controller. Accuracy**: CO2: ±40 PPM + 3% of reading (2000 PPM CO2); ± 50 PPM + 5% of For applications that require visual indication, the wall mount configurations of the reading (5000 PPM CO2); Temperature: ±1°C @ 25°C. Series CDT can be ordered with an integral LCD display. To prevent tampering, the Response Time: 2 min for 90% step change. action of the buttons can be locked out using an internal dip switch selection. Temperature Limits: 32 to 122°F (0 to 50°C). The Series CDT CO2 transmitters are available with a -S option that provides the Humidity Limits: 0 to 85% (non-condensing). necessary attributes and parameters to be compliant with DSA requirements for Power Requirements: 16-35 VDC or 19-28 VAC. monitoring CO2 levels in schools. There is a front facing LED that illuminates when the Power Consumption: Average: 2 w; Peak: 3.75 w. CO2 level exceeds 1100 PPM. Output: Current: 4-20 mA (max. 500 Ω); Voltage: 0-5 VDC or 0-10 VDC (min. 500 Ω); Relay: SPST NO rated 2A @ 30 VDC; RTD or thermistor per r-t curves on page BENEFITS/FEATURES 4 (depending on model). • Minimize inventory and save time by combining CO2 and temperature Compliance: CE. Carbon Dioxide measurements into one transmitter **The specified CO2 accuracy is only guaranteed after three weeks of continuous • Reduces the number of devices mounted in the space with integral humidity and operation in environments which are intermittently occupied. temperature sensors Transmitters • Requires minimal maintenance with Automatic Baseline Correction (ABC) to account for sensor drift • Reduce operation costs using a low energy, reliable, and repeatable CO2 sensor • Simplify installation with backplate electrical connection APPLICATIONS • Demand control ventilation in schools, office buildings, hospitals, and other indoor environments • LEED® certification MODEL CHART ACCESSORIES Example CDT -2 N 4 4 -LCD CDT-2N44-LCD Model Description Series CDT Carbon dioxide/temperature transmitter A-449 Remote LCD display allows remote indication of Range 2 0 to 2000 PPM CO2 range select Dwyer® wall mount transmitters for validation or 5 0 to 5000 PPM CO2 range certification purposes A-449A Remote LCD display with buttons allows remote indication Configuration N North American style wall mount and calibration of select Dwyer® wall mount transmitters for D Duct mount validation and certification purposes CO2 4 4-20 mA / 0 to (5 or 10) VDC Temperature 0 None Output 4 4-20 mA / 0 to (5 or 10) VDC A 10 KΩ NTC thermistor type III B 10 KΩ NTC thermistor type II D Pt100 Ω RTD E Pt1000 Ω RTD F 20 KΩ NTC thermistor Options FC Factory calibration certificate LCD LCD display (wall only) RLY Relay S School A-449 A-449A LEED® is a registered trademark of the U.S. Green Building Council DWYER INSTRUMENTS, LLC | dwyer-inst.com 227