O2CX Oxygen & COe Analyzer


O2CX Oxygen and COe Analyzer for Combustibles

Compact In Situ Combustion Monitor for Combustion Optimization

In situ, real-time readings for optimal fuel efficiency of boilers, furnaces, and kilns, with fast and simple service ability, and all at a tremendous value. Our COSA Xentaur O2CX Oxygen and COe Analyzer is the ideal choice to optimize fuel efficiency on most combustion sources and for stack oxygen applications. It has several significant advantages over other oxygen transmitters. The addition of our unique combustible sensor allows the process to safely operate with a lower Excess Air ratio, which translates into higher fuel efficiencies.

Our O2CX oxygen and COe analyzer offers great accuracy and sensitivity below 10% oxygen and does not require dilution air like other competitors utilizing a Pellistor sensor.

For easy access and service, the flow guidance tube design allows the sensors to be located near the back of the transmitter. This makes for simple service without the need to remove the entire assembly from the stack and struggle with removing sensors located at the end of the probe.  Easily remove or replace O2 and COe sensors – saves time and $$.

The O2CX oxygen and COe analyzer is versatile for different mounting requirements or difficult applications like high temperature, dust, or even hazardous installations, and it can also be outfitted with auto calibration. It provides all of this and is the best value available on the market today to measure oxygen and carbon monoxide equivalent (COe).

The O2CX oxygen and COe combustion analyzer combines superior sensors with a robust to deliver better combustion performance, trouble-free operation, and simple serviceability for safe, reliable and efficient industrial combustion measurement.

Ideal for process control, flare safety control, and combustion control.

Contains 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)

Questions? We’re here to help.