Polarographic Oxygen Measurement

Phil Black - PII Editor 26/09/2011

228 1 minute read

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For Cost Efficient In-situ Operation

In the chemical, petrochemical and pharmaceutical industries, the level of oxygen at different stages of the manufacturing process must be controlled to prevent explosive conditions. In other applications, product degradation and/or further process reaction resulting from exposure to oxygen must be avoided during final or intermediate storage. In these applications, the oxygen level must be kept below a certain limit in order to ensure safe and reliable process conditions. This is achieved using an inert gas, usually nitrogen, to blanket a vessel or a tank. An intermittent or sometimes continuous inflow of nitrogen is then applied, maintaining a constant positive pressure in the tank during all stages. In this way, ingress of detrimental or even dangerous levels of air can be avoided.

Several technologies are available for the measurement of oxygen in continuous process analysis. Because they differ widely in terms of application coverage, field performance and ease of use, the right technology has to be carefully chosen. METTLER TOLEDO’s new white paper reviews the possibilities offered by measurement systems based on polarographic sensing technology.

For further information on the new technologies call 0116 2345095