Beverage Plant Application 420-15-057 Level Measurement with Beer Foam There are two possible measurements available using RF probes when beer foam is involved: 1) Level of the entire beer liquid/foam height 2) Level of the beer liquid, ignoring the foam phase The key item in either measurement is the conductivity of the particular phase. All of the beer (and wort) that we have tested over the last 20 years runs in the area of 1,000 micro mh

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