Process and measurement systems for measuring physical quantitie

Details Process and measurement systems for measuring physical quantitie Process and measurement systems for measuring physical quantitie

1997-07-10

1999-10-26

Do, Diep N.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324439, 324693, 324724, G01N 2708, G01R 2708

Patent

active

059735031

ABSTRACT:
A process for online measurement of electrical conductivity to control minimum conductivity of fluids, especially rolling oil, which prevents charging and discharging, by controlled addition of conductivity additives. The process measures the time change of conductivity to determine the amount of extremely fine particulate fouling and the degree of impurity of the rolling oil. The process also provides online measurement of the dielectric constant and online measurement of permeability.

REFERENCES:
patent: 3275018 (1966-09-01), Roberts
patent: 4072892 (1978-02-01), Lind
patent: 5396178 (1995-03-01), Rybarski
patent: 5450358 (1995-09-01), Seibert et al.
patent: 5521510 (1996-05-01), Schunck

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