About Us

Using our products, customers save millions of dollars each year through increased energy efficiency in their processes and reduced process disruptions.

Who We Are

Process Sensing Technologies (PST) provides an unmatched suite of instruments, analyzers and sensors for precision measurements and monitoring in highly demanding end markets. These range from pharmaceutical/ life sciences, speciality gases, semiconductors, O&G, petrochemicals and power to gas detection, food and beverage and building automation.

What We Do

The quality of food, medicines, semi-conductors and thousands of manufactured goods depends on reliable measurements of critical parameters such as humidity, oxygen, CO, N2, H2, Hydrocarbons, pressure or CO2 during production, storage and transport. Our products directly improve the profitability of our customers and help them to stay compliant with stringent industry regulations. We own and manufacture the sensing technologies used in the majority of our products. This allows us to remain in a strong leadership position and pass on the benefits of our innovation to our customers.

Our History

PST brings together well-established brands, each of which are trusted for the precision and reliability of their products, strong innovation and singular focus on customer service. With a history of development and innovation starting in 1965 and continuing to the present day, we look forward to many more milestones to come.


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  • Zurich, Switzerland
  • Full range of Relative Humidity and temperature instruments for industry, OEM and for monitoring applications in GxP regulated environments.


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  • Ely, Cambridge, UK
  • Multiple technologies in trace moisture for a wide array of end markets including compressed air, industrial gas and natural gas quality monitoring.


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  • Navan, Ireland
  • Oxygen analyzers and instruments across a number of industries including gas generators, additive manufacturing, and pharma industries.


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  • Pomona, CA, USA
  • Ppm and % galvanic oxygen sensors and analyzers for industrial and natural gas quality monitoring, and medical and diving applications.


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  • Mansfield, UK
  • Infrared gas sensors to OEM manufacturers across the global gas detection and monitoring industry.


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  • Coatbridge, UK
  • Manufacturer of oxygen sensors and liquid level switches for industrial, transportation, medical and automotive applications. Standard and custom-designed ranges


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  • Quebec, Canada
  • Ultra low range online analyzers based on proprietary plasma emission gas chromatography for applications in speciality gases and semiconductors.


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  • Ely, Cambridge, UK
  • PST provides a comprehensive suite of instruments and analyzers for precision measurements in industrial process control, environmental monitoring and food/pharmaceutical processing.