The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1977
Filed:
Jun. 30, 1975
Mannesmannrohren-Werke AG, Dusseldorf, DT;
Abstract
The method of automatically measuring tube wall thickness includes axially introducing an radio-active radiation source into the tube to be measured and directing its radiation at about 45 degrees toward the tube wall. Other steps include distributing a plurality of scintillation counters uniformly around the tube, and measuring the transmitted radiation by said counters. The measurement values compensated for a specific wall thickness being amplified proportionally to the radiation intensity and are each adapted to be fed in a predetermined measuring time through a measuring capacitor, the charge values of the capacitors being indicated in succession and fed to a statistical measurement value detecting arrangement. Included is the preliminary step of automatically calibrating the measuring arrangement by axially introducing said radiation source into a corresponding tube with standard dimension, and measuring the radiation therethrough; and apparatus therefore.