Advanced Oxygen Analysis Systems

Oxygen is the 3rd Advanced Oxygen Analysis Systems abundant element in the universe and is critical for life. However, it can also pose a problem in natural gas transmission lines and gathering systems where even trace levels of oxygen can cause costly damage and halt the flow of natural gas.

When gases of different partial oxygen concentrations come into contact with the zirconia sensor, the ions on both sides of the solid electrolyte are exposed to electric fields which create an electromotive force that can be measured. The difference in the measurement value between the two sensors is proportional to the oxygen concentration of the sample gas.

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An alternative to oxygen cells, tunable diode laser (TDL) analyzers use optical filters to concentrate the infrared light that is transmitted through the gas being measured. Gas molecules absorb this infrared light at specific wavelengths based on their molecular structure and this absorption follows Beer’s law. The TDL analyzer can measure very low concentrations of gas.

Traditionally, measuring the oxygen content of hydrogen piping required extracting a sample and reducing its pressure for analysis. With in-situ installation of oxygen analyzers directly into the high-pressure hydrogen piping, operators can continuously monitor the oxygen content of the gas in real time with reduced complexity and enhanced accuracy. In addition to monitoring O2 levels, these systems provide real-time combustion control allowing customers to achieve lowered CO2, SOX and NOX emissions.