发明名称 A method and apparatus for internal corrosion-inspection of pipes or tubes of a relatively small diameter.
摘要 <p>Capacitive internal inspection of heat exchanger tubes. The tube wall functions as one capacitor plate and a probe moving through the tube contains the other plate of a capacitor. The gap between both plates will vary depending on the condition of the tube-wall. As a consequence the capacitance will change, which change can be monitored.</p>
申请公布号 EP0321013(A2) 申请公布日期 1989.06.21
申请号 EP19880202714 申请日期 1988.11.28
申请人 SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 发明人 BAKKER, HENDRICUS LEO MARIA;HOFF, ANTONIUS BERNARDUS MARIA
分类号 G01B7/13;G01B7/287;G01N27/24 主分类号 G01B7/13
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