Field Instruments

General

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.

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

• Make: Greystone
• Model: CD2DTF05R
• Gas Type Detected:  Carbon dioxide (CO2)
• Sensor Type: Dual channel non-dispersive infrared (NDIR)
• Sensor Accuracy: ± (30 ppm + 3% of measured value)
• Measurement Range: 0-10,000 ppm
• Temperature Dependency: ±2.5ppm/°C
• Response Time: 20 seconds (T63)
• Warm-up Time: 1 minute
• Sensor Life Span: > 15 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 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)
• Output Drive @ 24 Vdc: 550Ω max (4-20 mA output), 10 KΩ min (voltage output)
• Operating Temperature: 0 - 50°C (32 - 122°F)
• Storage Temperature: -40 - 70°C (-40 - 158°F)
• Operating Humidity: 0 to 95 %RH non-condensing
• LCD Display Units: ppm (CO2), °C/°F (optional temperature)
• Display Range: 0 - 10,000 ppm, 0 - 50 °C / 32 - 122 °F
• Display Size: 1.4 x 0.6” (35 x 15 mm)
• Options: Relay, Cable gland
• Temperature Sensor: 1801 ohm Thermistor
• Temperature Sensor Range: 0 - 50 °C / 32 - 122 °F
• Temperature Sensor Output: 2-wire resistive
• Relay: (Optional 2-wire output)    Form A (N.O.), 2 Amps @ 140 Vac / 30 Vdc
• Enclosure Material:  Polycarbonate (UL94-V0)
• Enclosure Dimension: 116 x 100 x 54 mm (4.6 x 3.9 x 2.1”)
• Enclosure Protection: IP65
• Probe Material: Polycarbonate (UL94-V0)
• Probe Dimension: 152 x 22.5 mm (6 x 0.85”)
• Process Connection: 1/2” NPT
• Wiring Screw terminal block: (14 - 22 AWG)

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk