CD2DT Carbon Dioxide Sensor, Duct Mounting, Analog Op, 0-5000ppm

Description

The duct CO2 device uses a highly accurate and reliable non-dispersive infrared (NDIR) sensor in an attractive enclosure with a gasketed, hinged cover for duct applications to monitor CO2 levels. The sensor uses dual wavelength optics and LTA (long term adjustment) signal processing technology to deliver industry leading long term accuracy and reliability. These features ensure optimum measurement stability for continual monitoring of either supply or return air measuring.

Optional features include a resistive temperature sensor output (with LCD display of temperature in either °C or °F), a control relay with programmable setpoint, hysteresis and time delay, and either a conduit or cable gland connection point.

F model with Cable Gland fitting

Features

• Dual wavelength NDIR
• Selectable CO2 measurement span (1000 – 5000ppm)
• Selectable 4-20 mA, 0-5 or 0-10 Vdc output
• IP65 enclosure
• Optional temperature sensor
• Optional control relay
• Easily field calibrated
• 5 year calibrated guarantee

Specifications

• GAS TYPE DETECTED Carbon Dioxide (CO2 )
• SENSOR TYPE Dual wavelength non-dispersive infrared (NDIR)
• SENSOR ACCURACY ± 50ppm + 3% of reading
• MEASUREMENT RANGE 0-2000ppm (default), adjustable 1000 - 5000ppm
• PRESSURE DEPENDENCY <1% of reading / kPa
• RESPONSE TIME 90 seconds (T90)
• WARM-UP TIME 1 minute
• SENSOR LIFE SPAN >10 years
• TRANSMITTER ACCURACY ±0.25% of span (including linearity, hysteresis and repeatability)
• POWER SUPPLY 24 Vdc ±20% or 24 Vac ±10% (non-isolated half-wave rectified)
• PROTECTION CIRCUITRY Reverse voltage protected and transient protected
• INPUT VOLTAGE EFFECT Negligible over specified operating range
• OUTPUT SIGNAL TYPE 4-20 mA (3-wire), 0-5 or 0-10 Vdc (field selectable)
• CURRENT CONSUMPTION
  Current: 75 mA @ 24 Vdc max, 150 mA @ 24 Vac max
  Voltage: 50 mA @ 24 Vdc max, 100 mA @ 24 Vac max
• OUTPUT DRIVE @ 24 VDC Current: 550Ω max Voltage: 10,000Ω min
• AMBIENT OPERATING RANGE -10 to 50°C (14 to 122°F), 5 to 90 %RH non-condensing
• STORAGE TEMPERATURE -30 to 70°C (-22 to 158°F), 5 to 90 %RH non-condensing
• LCD DISPLAY
  Units: ppm (CO2 ), °C/°F for optional temperature sensor
  Range: 0 to 5000ppm, 0 to 50°C (32 to 122°F) for optional temperature sensor
  Resolution: 1ppm CO2 , (0.1°C/°F for optional temperature sensor
  Size: 35mm W x 15mm H (1.4” x 0.6”), 2 line x 8 character, alpha-numeric
  Digit Height: 2-line x 8 character
• TEMPERATURE SENSOR (OPTIONAL)
  Type: Thermistor and RTD (see ordering chart)
  Accuracy: See ordering chart
  Output: 2-wire resistive
• RELAY (OPTIONAL) 2-WIRE OUTPUT Selectable CO2 high, CO2 low, Temp High or Temp Low
  Rating: Form A (N.O.), 2 Amps @ 140 Vac / 30 Vdc
• ENCLOSURE
  Material: Polycarbonate, Grey, UL95-V0, IP65, (NEMA 4X)
  Dimensions: 116mm W x 100mm H x 54mm D (4.6” x 3.9” x 2.1”)
  Probe: 22.5mm D x 152mm L (0.88” x 6”)
• WIRING Screw terminal block (14 to 22 AWG)
• APPROVALS CE COUNTRY OF ORIGIN Canada

Technical

CD2DT Carbon Dioxide Sensor - Duct mounting, adjustable span Datasheet