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1.发明公开
公开(公告)号：EP0355699A2
公开(公告)日：1990-02-28
申请号：EP89115120.1
申请日：1989-08-16
IPC分类号： G01M3/36
CPC分类号： G01M3/363
摘要： There is disclosed a method for inspecting leakage of a sealed container which is effectively used for detecting a leaking place such as a pin hole, crack, etc. of a sealed container (2) which contains foods, pharmaceuticals, chemical industrial products, etc. A method for inspecting leakage of a sealed container (2) according to the present invention comprises changing an internal pressure of a vacuum chamber (1) provided therein with an eddy-current displacement sensor (9) to a predetermined degree of vacuum from a normal pressure after putting a sealed container (2) having a conductive material at least at a portion to be inspected in the chamber; detecting an amount of expansion of the sealed container (2) at the degree of vacuum in time sequence by the eddy-current displacement sensor (9); and determining any aging change in the amount of expansion after a time when the detected amount of expansion shows the maximum value, thereby to find out any pin hole formed in the sealed container.
摘要翻译： 公开了一种用于检测密封容器泄漏的方法，该密封容器有效地用于检测包含食品，药品，化学工业产品等的密封容器（2）的针孔，裂纹等泄漏场所。 根据本发明的用于检查密封容器（2）的泄漏的方法包括：将设置在其中的真空室（1）的内部压力从正常变化到涡流位移传感器（9）至预定真空度 将具有导电材料的密封容器（2）至少放置在所述腔室中待检查的部分之后的压力; 通过涡流位移传感器（9）以时间顺序检测密封容器（2）的真空度的膨胀量; 并且在检测到的膨胀量显示最大值的时间之后确定膨胀量的任何老化变化，从而找出在密封容器中形成的任何针孔。
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公开(公告)号：EP0355699A3
公开(公告)日：1991-01-09
申请号：EP89115120.1
申请日：1989-08-16
IPC分类号： G01M3/36
CPC分类号： G01M3/363
摘要： There is disclosed a method for inspecting leakage of a sealed container which is effectively used for detecting a leaking place such as a pin hole, crack, etc. of a sealed container (2) which contains foods, pharmaceuticals, chemical industrial products, etc. A method for inspecting leakage of a sealed container (2) according to the present invention comprises changing an internal pressure of a vacuum chamber (1) provided therein with an eddy-current displacement sensor (9) to a predetermined degree of vacuum from a normal pressure after putting a sealed container (2) having a conductive material at least at a portion to be inspected in the chamber; detecting an amount of expansion of the sealed container (2) at the degree of vacuum in time sequence by the eddy-current displacement sensor (9); and determining any aging change in the amount of expansion after a time when the detected amount of expansion shows the maximum value, thereby to find out any pin hole formed in the sealed container.
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