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Development of a handheld sensor system system for the online measurement of hydrogen peroxide in aseptic filling systems

✍ Scribed by Steffen Reisert; Hartmut Henkel; Andreas Schneider; Daniel Schäfer; Peter Friedrich; Jörg Berger; Michael J. Schöning

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
377 KB
Volume
207
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

A handheld sensor system for the online measurement of hydrogen peroxide (H~2~O~2~) in aseptic sterilisation processes has been developed. It is based on a calorimetric‐type gas sensor that consists of a differential set‐up of two temperature sensors, of which one is catalytically activated and the second one is passivated and used as reference. The sensor principle relies in detecting a rise in temperature on the active sensor due to the exothermic reaction of H~2~O~2~ on the catalytic surface. To characterise the sensor system towards H~2~O~2~ sensitivity and other influencing factors, measurements have been carried out both at an experimental set‐up and a manufacturer's sterilisation machine. Physical sensor characterisation was done by means of the optical microscopy.

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