copyright© 2014 austin analytics group, llc. stand alone system high temperature system hazardous...
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OXY-O2 System
Zirconium-Oxide
In situ Oxygen Measurement
Copyright© 2014 Austin Analytics Group, LLC
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• Stand Alone System
• High Temperature System• Hazardous Area System
• Universal/Remote Display System
Copyright© 2014 Austin Analytics Group, LLC
The OXY-O2 Product Line
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Copyright© 2014 Austin Analytics Group, LLC
• Display on probe• Diagnostics on probe• User interface on probe• System confirmation on probe• System fault indication on probe• Analog output (optional track or hold)• Customer configured alarms• Serial communication (RS 485 Modbus Protocol)• Manual or Auto calibration trigger• NEMA 4X housing• Universal Power input
O2 Integrated Oxygen System Features:
Integrated Control Unit and Probe
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• Designed for used with OXY-O2 probe
• Compatible with probes of other manufacturers
• Stand alone unit
• Used with high temperature OXY-O2 probe
• Supplied with wall mounting flange
Copyright© 2014 Austin Analytics Group, LLC
The OXY-O2
Remote/Universal Control Unit
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Probe Features:• Insertion lengths 0.2M, 0.4M, 0.5M, 1.0M, 1.5M, 2.0M
• Lengths up to 4.0M available as custom order
• Fixing flange 2” ANSI (4” option)
• Probe material stainless steel
• Flue gas maximum temperature 1200°F
• Flue gas maximum pressure or 20” WG
Copyright© 2014 Austin Analytics Group, LLC
The OXY-O2 Probe
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High Temperature Probe • Works with OXY-O2 RCU
• Gas Temperature range 1200 - 2550°F• Probe lengths 21” or 37”• Various sheath materials depending on Temperature• Inconel up to 1850°F • Alumnus Porcelain up to 2250°F • Recrystallized Alumina up to 2550°F
Copyright© 2014 Austin Analytics Group, LLC
The OXY-O2 High Temperature System
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Explosion Proof Probe • Works with OXY-O2 RCU
• Maximum Gas Temperature range 1200°F• Probe lengths 0.4M, 0.5M, 1.0M, 1.5M, 2.0M • Fixing Flange 2” ANSI (4” option)• Probe material stainless steel
Copyright© 2014 Austin Analytics Group, LLC
The OXY-O2 Explosion Proof System
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Copyright© 2014 Austin Analytics Group, LLC
Auto-Calibration Unit
Automatic Calibration Flow/Control Unit • For auto calibration of stand alone and remote systems• Use where regular calibration required• Often required for compliance monitoring
Auto-Cal Schematic
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Key Messages
Display/Probe Features •Display on Probe or remote•Diagnostics on Probe or remote•User Interface on Probe or remote•Visual Indication of System Operation on Probe or remote•Automatic Fault Detection•Visible indication of System Fault on Probe or remote•Analog Outputs and Alarms•Serial Communications•Modbus Communications
Copyright© 2014 Austin Analytics Group, LLC
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In Situ Zirconia MeasurementPrinciple of Operation
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In Situ Zirconia MeasurementPrinciple of Operation
Sensor Output across Electrodes is given by the Nernst equation:
where: R - Gas Constant
P1 - Air Oxygen LevelP2 - Flue Gas Oxygen LevelF - Faraday’s ConstantT - Absolute TemperatureC - Cell Constant
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The OXY-O2 Cell
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The OXY-O2 Cell
Copyright© 2014 Austin Analytics Group, LLC
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Why Measure Oxygen?
• Optimize fuel/air ratio & combustion efficiency
• Minimize NOx emissions
• Standardize emissions concentration data
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Optimize fuel/air ratio & Combustion Efficiency
• Dry flue gas loss• Incomplete combustion• Latent heat losses• Radiation losses• Blow down
Combustion Heat Losses & Chemistry
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• Insufficient air
• Poor burner conditions
• Poor fuel/air mixing
• Flame turbulence
Incomplete Combustion
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Optimize Fuel/Air Ratio & Combustion Efficiency
Copyright© 2014 Austin Analytics Group, LLC
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Minimize NOX Emissions
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Application: Large Industrial Boilers
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Application: Industrial Boilers
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In Dry Cement Process• Ensure minimum of in-leaking air is achieved,
therefore maintaining correct pressure drop through pre heated tower
• Signal a possible explosion hazard due to high oxygen and carbon monoxide levels produced from process
Application: Cement Plant
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• High dust levels mean sampling is difficult; in situ method preferred
• Exit temperature from 1st stage 650-750°F
• Zirconia is ideal; accurate and stable so operator gets maximum through-put of product without endangering plant.
Application: Cement Plant (continued)
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When tankers are loading and discharging crude oil they have to be blanketed with inert gas (CO2). This gas has to have an O2 content below 8%
• O2 at below 8% is obtained from boiler exhaust
• The level of O2 controls change over valve and is measured down-stream of the valve
• Below 8% feed to tanks • Above 8% exhausted to funnel
Application: Oxygen on Oil Tankers
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