Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1992-11-23
1997-03-11
Regan, Maura K.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324509, 324520, 324602, 324692, G01R 2702, G01R 3108
Patent
active
056105266
ABSTRACT:
A contact hazard meter used to measure electromagnetic field induced currents which would flow through a human body to ground upon physical contact with an item carrying such field induced currents includes a conductive contact, a human equivalent circuit coupled to the conductive contact and an electronic circuit coupled to the human equivalent circuit for measuring and displaying a measurement of current flowing from the item and through the human equivalent circuit when the conductive contact is placed in physical contact with the item carrying the field induced currents. The human equivalent circuit approximates the impedance of the human body at varying frequencies. The contact hazard meter has a plurality of range settings, one setting providing the resultant current as a percentage of a safety guideline maximum permissible exposure value.
REFERENCES:
patent: 3878459 (1975-04-01), Hanna
patent: 4558309 (1985-12-01), Antonevich
patent: 4638399 (1987-01-01), Maroney et al.
patent: 4692685 (1987-09-01), Blaze
patent: 4859992 (1989-08-01), Hoigoard
patent: 5001436 (1991-03-01), Scot et al.
patent: 5068619 (1991-11-01), Nakano et al.
Aslan Edward E.
Gandhi Om P.
Brown Glenn W.
Regan Maura K.
The Narda Microwave Corp.
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