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Device for measuring level of foam-forming liquid in container e.g. fermenter used in pharmaceutical and biotechnology fields, determines presence of foam layer on liquid surface based on primary and secondary filling level values
Device for measuring level of foam-forming liquid in container e.g. fermenter used in pharmaceutical and biotechnology fields, determines presence of foam layer on liquid surface based on primary and secondary filling level values
The device has primary measuring device that is provided for determining primary liquid filling level value which indicates upper limit of foam layer (106), if foam layer is present on liquid surface. A secondary measuring device is provided for determining secondary liquid filling level value which indicates position of liquid surface independent of presence of foam layer on liquid surface. The presence of foam layer on the liquid surface is determined based on the primary and secondary filling level values by laser measurement. An independent claim is included for method for measuring level of foam-forming liquid in container.
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