Method and apparatus for improving the safety and extending the

Details Method and apparatus for improving the safety and extending the Method and apparatus for improving the safety and extending the

1985-09-23

1987-12-22

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Using ionization effects

324500, 328 7, 361 42, G01N 2762, H02H 300

Patent

active

047148918

ABSTRACT:
Different approaches are described, in ionization gauges or the like, which either prevent dangerous open ground conditions and/or sense the presence of the open ground whereby the controller power may be automatically turned off. Circuitry for extending the measurement range of ionization gauges is also described.

REFERENCES:
patent: 2595611 (1952-05-01), Simpson et al.
patent: 3321701 (1967-05-01), Crowell
patent: 3342993 (1967-09-01), O'Halloran et al.
patent: 4224579 (1980-09-01), Marlett et al.
patent: 4450409 (1984-05-01), Castleman et al.
patent: 4477768 (1984-10-01), Hiramoto et al.
patent: 4559477 (1985-12-01), Leung et al.

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