November 2013Analytical Instrumentation & Environmental Monitoring
It is important that dissolved oxygen be monitored continuously during the brewing process. Since some classical sensors tend to give faulty readings after stop-of-flow or CIP cycles, optical sensors are now being used to monitor this more reliably. The portable ‘Beverly’ oxygen meter from Hamilton, which has been on the market since September 2013, has been able to raise the level of process reliability safety through the integration of the latest innovative sensor technology.
Beverly has been developed on the basis of the Hamilton VisiFerm DO B optical sensor together specifically to address challenges in the brewing process. In critical process phases, the sensor offers advantages over classical Clark cells such as a faster response time, the independence of using a flow-through procedure, no polarisation time and an extremely low rate of error.
Easy handling and maintenance
In addition, the design has advantages that help to increase the efficiency of small and medium-sized breweries: these include simple sensor installation as well as the minimum handling and maintenance requirements. Beverly can be calibrated without removing the sensor and the sensor cap of the integrated VisiFerm DO B needs to be replaced only very rarely, including calibration this takes just a few minutes. The self-diagnostics of VisiFerm DO B are particularly helpful in this regard and the display indicates any warnings and the steps needed to resolve problems.
In this way, breweries can reliably check the oxygen content anywhere in the brewing process and in the laboratory: during aeration of the wort, in production, when inertising storage tanks or for quality control of the packaged beer.
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