X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1992-03-03
1993-10-19
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 51, 378 54, 378207, G01B 1502, C25D 104
Patent
active
052553027
ABSTRACT:
A device for continuously measuring the thickness of a foil includes a radiation source opposite a radiation detector, and a movement member which moves the radiation source and detector synchronously in a width-direction of the foil. A signal generator generates a signal indicating a position of a portion of the foil whose thickness is being measured, and a counter having a plurality of integrating channels integrates detection signals output from the detector to generate an integrated count number for each channel. A signal switching member switches each of the plurality of integrating channels of the counter according to signals generated by the signal generator, and a calculator calculates a foil thickness from the integrated counted number for each channel of the counter. This structure allows continuous and precise measurement of the foil's thickness.
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Hayashi Tamotsu
Shimamune Takayuki
Chu Kim-Kwok
Permelec Electrode Ltd.
Porta David P.
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