| 摘要 |
PROBLEM TO BE SOLVED: To detect with accuracy short circuit between electrodes due to metal particles. SOLUTION: The metal particle detecting device comprises a first electrode 11 and second electrodes 12-16 arranged in a sensor body 2 with a space between each other and immersed in oil, an attracting means 18 for attracting metal particles mixed in the oil to the first electrode 11 and second electrodes 12-16, a first circuit formed to carry electric current to the first electrode 11; a second circuit connected in parallel with the first circuit, by short-circuiting between the first electrode 11 and second electrodes 12-16 via the attracted metal particles; and a short-circuit detecting means 28 for detecting a short circuit between the first electrode 11 and second electrodes 12-16. COPYRIGHT: (C)2010,JPO&INPIT |
