Environmental, industrial and commercial indoor Carbon Monoxide (CO) gas detector. Available in both a space and duct mount version.


ABS Duct Enclosure for CO


To sense and transmit to any compatible electronic analog control, DDC/PLC controller or automation system for the control of ventilation equipment.


  • Setup/calibration fully menu driven
        (requires LCD option)
  • 0-300ppm for electrochemical (5%),
        0-500ppm for electrochemical (3%)
  • Electrochemical sensing elements
  • Optional on board relays with field adjustable
        trip point.
  • Optional LCD for displaying PPM level and menu
        options.
  • Powered by either AC or DC source with no change
        to circuit required.
  • Choice of three field adjustable analog output
        signals, linearized over full range.
  • Easy to calibrate in the field


    • CO DETECTOR - Product # CMD

    Gas Detected Carbon Monoxide (CO)
    Range 0-300 ppm electrochemical and 0-500 ppm electrochemical
    Standard Accuracy at 0-50 °C (32-122 °F), 15 – 95% RH ±5 PPM or ±5% of reading (Whichever is greater)for 0 – 300 ppm
    ±5 PPM or ±3% of reading (Whichever is greater)for 0 – 500 ppm
    Sensing Element Life Expentancy Electrochemical 5-7 years in air
    Operation Conditions -20-50 °C (-4-122 °F) for 5%, 0-50 ºC (32-122 ºF) for 3%,
    15-95% RH non-condensing
    Sample Method Diffusion or flow through, sample tube for duct
    Stability < 5% signal loss/year
    Manufacturing Process ISO 9001 certified
    Output Signal 4-20 mA active (sourcing), 0-5Vdc or 0 – 10 Vdc jumper selectable
    Output Drive Capability Current output – 500 ohms max
    Voltage output – 10 Kohm min
    Output Resolution 10 bit PWM (+/- 0.4 ppm)
    LCD Display (optional) LCD for displaying PPM and menu parameters
    1 ppm resolution, 1.1” w x 0.5” h (28 x 13 mm) alpha-numeric 2 line x 8 characters
    Field Calibration Calibration, applying calibration gas standards (Contact Greystone for Calibration kit)
    External Dimensions ABS Space – 124.5 W x 183.5 H x 43 mm D (7.2” x 4.9” x 1.7”)
    Duct ABS – 124.5 x 183.5 x 250.5 mm (7.2” x 4.9” x 9.9”) includes duct insertion tube
    Agency Approvals Sensor is UL Recognized Component for ANSI/UL-2034 and UL-2075, E240671
    Typical Coverage Area 700 m2 (7500 ft2)
    Response Time < 30 seconds for 90% step change
    Warm-up Time 200 seconds
    Power Supply 15-30 Vac/dc (non-isolated half-wave rectified)
    Consumption 80 mA max @ 24 Vdc with all options on
    150 mA max @ 24 Vac with all options on
    Input Voltage Effect Negligible over specified operating range
    Protection Circuitry Reverse voltage protected and output limited
    Transient protection
    Optional Relay Output One or two Form C contact (N.O. and N.C.),
    5 amps @ 250 Vac, 5 amps @ 30Vdc, p.f. = 1
    Relay 1 Trip Point – Programmable 25, 40-350 ppm in 10 ppm increments
    Relay 2 Trip Point – Programmable 100-400 ppm in 10 ppm increments
    Relay Hysteresis – Programmable 10, 15, 25, 50, or 75 ppm
    Relay Delay - Programmable 0, 1, 2, 3, 4 or 5 minutes
    Programming and Selection Via internal push-buttons and jumpers or optional Modbus communication (LCD required)
    Wiring Connections Screw terminal block (14 to 22 AWG)


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