Bypass tandem chamber charge density monitor

Details Bypass tandem chamber charge density monitor Bypass tandem chamber charge density monitor

1989-03-20

1990-08-07

Strecker, Gerard R.

Electricity: measuring and testing

A material property using electrostatic phenomenon

In a liquid

324454, 324464, G01N 2760, G01R 2912, H05F 100

Patent

active

049474685

ABSTRACT:
A bypass conduit is connected to a primary conduit and has tandem reservoirs formed therein. Continuous measurements are taken from the respective reservoirs of the electrical current generated by the relaxing fluid therein and flowing to ground. These respective measurements are inputted to a microcomputer through respective electrometer elements and converted into a single measure of charge density along with readings of the moisture, conductivity and temperature of the fluid. In a preferred embodiment, the fluid constitutes the oil (or other coolant) circulated in respective conduits between a power transformer and an external heat exchanger. The microcomputer may trigger an alarm (or a control mechanism) whenever the charge density generated in the circulating coolant reaches a predetermined threshold level, thereby avoiding a potential hazardous condition due to the build-up of static electrical charges in the protected transformer or other device.

REFERENCES:
patent: 3405722 (1968-10-01), Carruthers
patent: 4041375 (1977-08-01), Polukhina
patent: 4249131 (1981-02-01), Owen
patent: 4309661 (1982-01-01), Kamoto
patent: 4392110 (1983-07-01), Elmenshawy
patent: 4592240 (1986-06-01), McHale

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