Carbon dioxide transmitters: Series CDTR DWYER

NDIR CO2 Sensor, Universal CO2/RH Outputs, Optional Relay

Application

  • Demand control ventilation in schools, office buildings, hospitals, and other indoor environments
  • LEED® certification
CDTR_Catalog CDTR-Manual (+84) 903 999 357

The SERIES CDTR Carbon Dioxide, Relative Humidity and Temperature Transmitters reduce the number of sensors mounted on a wall or in a duct.

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Specification

Range:CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Relative humidity: 0 to 100% ; Temperature: 32 to 122°F (0 to 50°C).
Accuracy:±40 ppm + 3% of reading (CO2); ±2% (RH).
Temperature Dependence:±8 ppm/ °C at 1100 ppm.
Non-Linearity16 ppm.
Pressure Dependence:0.13% of reading per mm of Hg.
Response Time:2 minutes for 99% step change.
Temperature Limits:32 to 122°F (0 to 50°C).
Humidity Limits:10 to 95% RH (non-condensing).
Power Requirements:16 to 35 VDC / 19 to 28 VAC.
Power Consumption:Average: 2 watts; Peak: 3.75 watts.
Sensor:Single-beam, dual-wavelength NDIR.
Output:Current: 4 to 20 mA (max 500 Ω); Voltage: 0 to 5 VDC or 0 to 10 VDC (min 500 Ω); Relay: SPST NO 2A @ 30 VDC; RTD or thermistor per r-t curves (depending on model).
Weight:5.6 oz (158.8 g).
Agency Approvals:CE.

Feature

  • Digital Intelligence Temperature Compensation Algorithm (DITCA) eliminates error due to the self heating effects of wall mount combination devices.
  • Single beam dual wavelength NDIR CO2 sensor
  • Replaceable humidity/temperature sensors
  • Physical hardware lockout
  • Service display tool available for duct mount and wall mount units without an LCD
  • Relay output option
 

 

Posted by Tuan

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