发明名称 |
TEST DEVICE FOR PERFORMING LEAK DETECTION AT A PLURALITY OF TEST SITES |
摘要 |
The leak detection device comprises a plurality of measuring cells (10) in whose interior the absorption of a laser beam (17) is influenced by the presence of tracer gas. All of said measuring cells (10) are connected to a host unit (25) via light-conducting fibers (28, 34). In the host unit (25), a laser (26) designed for modulation and a photodetector (37) are arranged. Modulation of the laser radiation is preferably performed by two-tone frequency modulation. This has the effect that the fiber length cannot significantly skew the result of the measurement. |
申请公布号 |
WO2011124607(A1) |
申请公布日期 |
2011.10.13 |
申请号 |
WO2011EP55346 |
申请日期 |
2011.04.06 |
申请人 |
INFICON GMBH;SCHWARTZ, VLADIMIR;CHERNOBROD, BORIS |
发明人 |
SCHWARTZ, VLADIMIR;CHERNOBROD, BORIS |
分类号 |
G01M3/20;G01M3/38 |
主分类号 |
G01M3/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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