Optical In-Line Measurements in the Brewing Process

Typical measurement points are in the filter cellar and in the filling plant. The use of long-life optoelectronic compounds and process proved wetted sensor parts leads to operational times which are significantly longer than for electrochemical membrane covered sensors. Further, the response time of optical sensors is 3-4 times shorter, resulting in less beer loss when switching from water to beer in the filling line. The compact InPro 8600 sensor is designed for the simultaneous measurement of low turbidity values and beer color in filtration and blending processes. A highly precise and robust optical set-up allows for scattered light measurements under the established angles of 25° and 90°. In a second measuring cycle the same optics are used for a color measurement according to EBC.mt.

Premature wear and frequent maintenance efforts are avoided by applying state-of-the-art technology to the wetted sensor head parts. There are other applications for which less sophisticated optical product monitors are more suitable. The InPro 8300 RAMS series is used for phase separation processes yeast/beer, beer/water in the fermenting room and storage cellar, and the reliable identification of different media in filling lines. All these optical systems have something in common, that major customer requirements such as high operational availability, reduced maintenance and a lower risk of unscheduled downtime, are fulfilled. (More information: www.mt.com/beer).