O2CX Oxygen and COe Analyzer

O2CX Oxygen & COe Analyzer 

Accurate and fast oxygen and COe measurement for combustion

Until now, in situ measurements, used to tune boilers, were limited to O2 only. Now, there is a compact in-situ probe for combustion optimization to measure both COe and O2 simultaneously providing engineers an improved tool to lower excess air to previously unachieved levels, saving fuel costs.  We have our COSA O2CX In Situ Combustion Optimization Monitor for Flue Gas Oxygen and Combustibles Transmitter.

Zirconium Oxide O2 Sensor

  • Long life
  • Fast response
  • High stability
  • Low energy consumption

Heated Solid Electrolyte COe Sensor

  • High accuracy/sensitivity
  • Stable even to 1% oxygen
  • No dilution air required
  • Fast response
  • Long life

Other Features

  • Easy access to sensors
  • Suitable for high dust/particulate applications
  • High temperatures to 3000°F
  • Probe lengths to 6′
  • Optional auto calibration
  • Measuring range:  0.1 to 25.0% Vol.-% O2, 0 to 1,000 ppm COe (option combustibles measurement)
  • Accuracy:  O2: ±0.2% or ± 5% of reading, whichever is larger, COe: ±50 ppm or ±10% of reading, whichever is larger
  • Flange:   ANSI flange: Ø 230 mm / probe tube: Ø 60 mm, up to max., 13′ (4.0 m) length or flange DN80 PN16
  • Flange:  DN65 PN6 flange: Ø 216 mm / probe tube: Ø 60 mm up to max. 13′ (4.0 m) length or flange DN80 PN16
  • Flange temperature:   Min. +160°F to max. +300°F (condensation at the flange must be avoided)
  • Response time T90:  <10 seconds
  • Analog outputs:  2 x current loop 4-20 mA, with galvanic isolation linearized for both 0 to 25% O2 and 0 to 1,000 ppm COe (user definable settings in 0.5% steps are possible) 
  • Digital output:  Galvanic isolated RS 485 (with Modbus protocol)
  • Power supply:  18 to 24 Vdc (for model O2CX), 90 to 100 W, 100 to 240 Vac (for model O2CX-RT and HT) max. 100 W
  • Electronic of transmitter:  With local microprocessor, display and 4 push-buttons
  • Calibration inlet:  With test gas fitting for 6/4 mm tube cal. gas supplied manually or automatically by pneumatic unit PU o2CX
  • INLET – Purging System for high particulate/dust application: min. 87 PSI – 116 PSI (6 – 8 bar) compressed air with quick connector for 8 mm tube
  • Ambient temperature of electronics:  -70°F to 130°F
  • Enclosure: Die cast aluminum, 6.3″ x 6.3″ x 2.4″ and probe tube, Ø 2″
  • Protection class: IP 65
  • Weight: 7.7 lbs (without probe and flange)

PROBE TUBE AND SENSOR CHAMBER BLOW BACK SYSTEM. Compressed air is required!!  Blow back timing and duration are user definable. Recommended for applications with high particulates, such as coal-fired power plants. Automatic calibration for span and offset, using pneumatic unit PU O2CX.  Application with high temperatures up to approx. 3,100°F with ceramic tube and ejector (model O2CX-HT).  Remote control and display unit (max. cable length = approx. 33’ – model O2CX-RT) for applications with ambient temperature >120°F.

Options available:

  • COe – combustible gas measurement
  • Back-purge using compressed air, with solenoid valve control by means of transmitter electronics, incl. adjustable purging intervals (recommended for high dust sites)

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COSA Xentaur
Process Insights
4140 World Houston Parkway
Suite 180
Houston, TX 77032

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