| 摘要 |
A sensor system for detecting the presence of water in a sealed oil chamber of a marine engine, and for providing a warning signal in response thereto. A sensor assembly surrounds the propeller shaft and includes a pair of conductive rings separated by a central insulative ring, preferably with outer insulative rings completing the assembly. Electrical wires connected to the conductive rings are part of an alarm circuit. The conductive rings each have radially inwardly extending sensor probes located in the center of the rings and a radially outwardly extending sensor probe located on its lower periphery, the probes extending beyond the central insulative ring to provide gaps which normally break the alarm circuit. The distal ends of the outwardly extending probes are juxtaposed to the lowermost portion of the oil chamber casing to detect the presence of any water in the oil chamber that settles to the bottom of the chamber when the engine is not running and conductively bridge the gap between these probes. The inwardly extending probes surround the propeller shaft and include overlapping portions that define gaps bridged by the presence of water mixed in with the oil when the engine is running.
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