Detection of the surface of a liquid or foam including moisture

Details Detection of the surface of a liquid or foam including moisture Detection of the surface of a liquid or foam including moisture

1988-11-09

1990-02-20

Strecker, Gerard R.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324441, 73304R, G01R 2726, G01N 2702

Patent

active

049029622

ABSTRACT:
In an apparatus for detecting the surface of a liquid or foam, for example in a fermentation vessel a detector electrode (10) is surrounded at its lower end by a protective shroud (12) so as to protect a confined vapor space (14) surrounding the detector electrode. The vapor in the space (14) is maintained at a relatively low humidity either by heating the detector electrode or some other part of the apparatus or by purging the space (14) with a relatively dry air or gas. It is thereby ensured that no condensation onto the O-ring seal (20) and surrounding parts takes place. The shroud (12) also protects the parts from splashing.

REFERENCES:
patent: 4059016 (1977-11-01), Kitzinger et al.
patent: 4204203 (1980-05-01), Verne
patent: 4361038 (1982-11-01), Schuler
patent: 4383544 (1983-05-01), Vosper
patent: 4418571 (1983-12-01), Asmundsson et al.
patent: 4574328 (1986-03-01), Maier

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