Apparatus for measuring the quality of a fluid in a vessel

Details Apparatus for measuring the quality of a fluid in a vessel Apparatus for measuring the quality of a fluid in a vessel

1998-02-27

1999-11-30

Noori, Max

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

73304R, G01F 2326

Patent

active

059922311

ABSTRACT:
The invention relates to an apparatus for determining the condition of a fluid in a space, comprising: a measuring electrode extending inside the space; a second electrode placed in the space; and a measuring circuit for measuring the impedance between the measuring electrode and the second electrode and calculating the condition from the impedance, wherein the measuring electrode extends at least partially uncovered in the space.
According to a preferred embodiment the apparatus is therefore provided with a measuring circuit which is adapted to measure the ohmic impedance between the measuring electrode and the auxiliary electrode. As stated, this provides the option of measuring the impedance of the substance present in the vessel so that with determined material properties it is possible to arrive at a better and more accurate measurement result.
It is pointed out herein that the present electrode also enables determining of the capacity between electrode and second electrode.

REFERENCES:
patent: 4551785 (1985-11-01), Kroner
patent: 4757252 (1988-07-01), Maltby et al.
patent: 4806847 (1989-02-01), Atherton et al.
patent: 5391839 (1995-02-01), Lang et al.
patent: 5546005 (1996-08-01), Rauchwerger

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