Apparatus for contactless measurement of the thickness of a shee

Details Apparatus for contactless measurement of the thickness of a shee Apparatus for contactless measurement of the thickness of a shee

1979-09-24

1981-11-17

Willis, Davis L.

Radiant energy

Inspection of solids or liquids by charged particles

Including a radioactive source

250358R, 250359, G01N 2300

Patent

active

043013651

ABSTRACT:
An apparatus for contactless measurement of the thickness of a sheet material comprises a radioactive source located in a protective container which has a collimating hole to output a flow of radiation. There is a radiation detector to sense the radiation passed through the material under control, which is electrically connected to a radiation intensity meter, and also compressed air means for delivery of a jet of compressed air to the measurement point.

REFERENCES:
patent: 3662174 (1972-05-01), McMullen et al.

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