Invention Grant
- Patent Title: Method for detecting an operation malfunction of a leakage inspector, and a leakage inspector having a function to detect an operation malfunction thereof
- Patent Title (中): 用于检测泄漏检查器的操作故障的方法，以及具有检测其操作故障功能的泄漏检查器
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Application No.: US12087765Application Date: 2007-01-12
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Publication No.: US07805259B2Publication Date: 2010-09-28
- Inventor: Akio Furuse
- Applicant: Akio Furuse
- Applicant Address: JP Tokyo
- Assignee: Cosmo Instruments Co., Ltd.
- Current Assignee: Cosmo Instruments Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agent David N. Lathrop
- Priority: JP2006-006559 20060113; JP2006-226278 20060823
- International Application: PCT/JP2007/050333 WO 20070112
- International Announcement: WO2007/080972 WO 20070719
- Main IPC: G01B5/28
- IPC: G01B5/28 ; G01M19/00
Abstract:
A method for detecting an operation malfunction of a leakage inspector causes the leakage inspector to execute a calibration process and an inspection process. The calibration process seals air inside a first device serving as a reference device and measures changes in pressure over two time intervals. The inspection process seals air inside a second device to be checked for a leak and measures changes in pressure over two time intervals. A ratio is calculated from these measured changes in pressure and the ratio is used to determine whether an operation malfunction occurs in the leakage inspector.
Public/Granted literature
- US20090012726A1 Method for Detecting Fault in Leakage Inspector, Leakage Inspector Public/Granted day:2009-01-08
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