Carbon dioxide monitoring for food processing


Courtesy of Geotech

Carbon dioxide monitoring for food processing

G100 CO2 analyser

Okehampton, UK

Kerry Foods

The customer was looking for a CO2 monitor to detect small changes in CO2 levels in the headspace above food products stored in stainless steel tanks.

The Kerry Foods plant processes food ingredients, such as fruit conserves and confectionery sauces, which are stored and distributed in appox 2000 tanks (400-800Kg capacity). Patterns of headspace CO2 build-up are monitored, with each of the tanks being monitored on a regular basis.

Although CO2 levels may rise to above 1% with some foods, such as strawberry or peach, higher levels can give early indication of a problem. This may be simply due to a tank being overfilled, but high CO2 could also indicate yeast or mould contamination.

Gas is monitored through a connection at the top of each tank. A regulator and moisture trap are used to protect the analyser against the headspace pressure and humidity. Calibration is checked twice a day, using 1% CO2 calibration cylinders and zeroing with nitrogen, ensuring readings for the 100 tanks a day are accurate.

Customer comment
'The G100 is easy to use, very quick and accurate. We have had other CO2 analysers in the past but this is by far the most portable due to its size.' Jo Ware, Deputy Quality Manager

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