| 摘要 |
<p>In a fuel filter with a sensor for detecting water precipitated in the filter from the fuel, which requires an exterior electric current supply, the current supply should take place as far as possible without the need for manual disconnection and connection of electric cable leads during a filter replacement. For this purpose, current supply leads are fitted within the filter in such a way that, in the event of a filter change, these are automatically separated from an exterior current source and reconnected. In the case of a threaded filter cartridge, this can in fact be achieved by connecting the filter to earth via the screw thread and providing the sensor with a spring-loaded contact which, when the filter is screwed on, bears against the current-bearing pin of the filter head to which the filter is screwed.</p> |
