Environmental, industrial, and commercial Carbon Dioxide and Temperature Sensor.



Executive Enclosure for CO2


To sense and transmit to any compatible electronic analog control, DDC/PLC controller or automation system for the control of ventilation equipment. Designed to meet ventilation requirements specified in ASHRAE Standard 62-1999.


  • Setup/calibration fully menu driven
        (requires LCD option).
  • Monitors CO2 over range 0-2000 PPM   
  • NDIR single beam with patented self
        calibration algorithm.
  • Guaranteed 5 year calibration interval.
  • Optional LCD for displaying PPM   
  • Powered by either AC or DC source with no
       change to circuit required.
  • Choice of two field adjustable analog output
        signals, linearized over full range.
  • Easy to calibrate in the field



  • Carbon Dioxide w/ Temperature Sensor - Product # CDD

    Product
    CDD1A4 & CDD1A5
    Range
    0-2000 ppm
    Sensing Element
    Non-Dispersive Infrared Detector (NDIR)
    Standard Accuracy
    ±50 PPM or +3% of reading @22ºC(72ºF) when compared to certified calibration gas
    Operation Conditions
    0-50ºC (32-122ºF), 0-95% RH non-condensing. -40-70ºC (-40-158ºF) in OSA Enclosure
    Temperature Dependence
    0.2% FS per ºC
    Stability
    < 2 % FS over life of sensor (15 years typical)
    Output Signal
    4-20 mA active (sourcing) or 0-5Vdc or 0-10Vdc, Model Specific
    Output Drive Capability
    Current - 550 ohm max
    Voltage - 2 Kohm min
    Pressure Dependance
    0.13% of reading per mm Hg
    Response Time
    2 minutes for 90% step change
    Warm-up Time
    2 minutes
    Power Supply
    20-30 Vac/dc (non-isolated half-wave rectified)
    Consumption
    65mA@24V maximum(25mA typical)
    Input Voltage Effect
    Negligible over specified operating range
    Protection Circuitry
    Reverse voltage protected and output limited
    LCD Display (Optional)
    LCD for displaying PPM level 0-2000, 1 ppm resolution, 1.3”w x 0.55”h (33 x 14 mm)
    Programming and Selection
    Via internal push-buttons and jumper
    Temperature Sensor
    Optional Thermistor or RTD
    Wiring Connections
    Screw terminal block (14 to 22 AWG)
    External Dimensions
    Executive Space - 71mm W x 119mm H x 32mm D (2.8" x 4.7" x 1.25")


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