| Operation
During the cleaning operation, pressurized cleaning solution is dispensed through a rotating nozzle assembly, which rotates in two axes. The axis are linked together in such a fashion that gradually, the whole inner surface of the tank is step by step cleaned.
As the nozzles rotate, the spray pattern creates a unique family of sound waves creating an acoustic signature unique to the tank dynamics that are detected from the exterior of the tank with a microphone. By attaching an acoustic sensor on the tank surface, the sound produced by the spray jet is captured and transmitted to the CIP Monitor processor unit for analysis.
Key properties such as sound pressure levels, amplitude variations, spectral content, and rotational velocity are extracted by the CIP monitor algorithm. A “learn” cycle is performed on a known good cleaning cycle to establish reference values for the key properties.
During subsequent cleaning cycles, the same key properties are
extracted and compared to the reference properties. For each
property a separate deterministic alarm condition can be
defined.
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