Precision Oxygen Analyzers
Most industrial processes require oxygen concentrations to be kept at a certain level. To achieve this, many companies use nitrogen gas to bring oxygen levels down to acceptable limits. Keeping track of these percent oxygen levels is essential to ensure that the process is running correctly.
Precision Oxygen Analyzers of an oxygen analyzer is how quickly it responds to a change in the sample gas. A well-designed sensor pocket allows a quick and complete purge of the sensor pocket, ensuring that any changes in the gas are detected. A poorly designed pocket can restrict the exposure of the sensor to the sample, create a ‘dead leg’ in the flow path that slows the exit of the sensor area and reduces the response time.
One of the most common methods for determining the oxygen content of a sample is through an electrochemical sensor. These sensors work by measuring the amount of oxygen ions that are present in the sample, by comparing the difference between the two electrodes. The difference between these results in the production of a voltage that can be measured by the sensor and converted to an oxygen measurement.
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Another way to measure the oxygen content of a sample is by using a paramagnetic sensor. These systems are often used to determine small residual amounts of oxygen in modified atmosphere packaging or the O2 content of insulating glass panes. They can also be used to test for air quality issues at a site.