| 摘要 |
<p>SOLID IMPURITY DETECTOR A device is provided for detecting the presence of solid impurities within a pressurized fluid. The device-comprises a housing having a fluid passageway formed therein. One end of the fluid passageway is open to the pressurized fluid, preferably via a restricted port, while the other end of the fluid passageway is open to a low pressure fluid region. A filter element is disposed across and obstructs the fluid flow through the passageway at a point intermediate its ends so that the filter element removes solid particles from fluid flowing through the passageway. A pressure sensing means, such as a pressure transducer, communicates with the fluid passageway between the pressurized fluid and the filter element. An increase of fluid pressure sensed by the pressure sensing means is indicative of a clogged filter element which, in turn, indicates the presence of solid impurities within the pressurized fluid. Appropriate indicating means are coupled to the pressure sensing means to provide a signal upon the occurrence of the aforementioned increase of fluid pressure.</p> |
