专利汇可以提供Method and apparatus for detecting particulate material in flow stream专利检索,专利查询,专利分析的服务。并且A system for detecting the presence of particulate material, e.g., sand, in a fluid stream flowing through a conduit, said system comprising an acoustical probe which is positioned directly into the flow stream. The probe has a housing in which a transducer, e.g., piezolectric crystal, is suspended. The housing is filled with oil to acoustically couple the transducer to the housing. Particulate material in the flow stream gives up kinetic energy upon striking the housing of the probe which in turn excites the transducer to generate an output signal having a frequency component which is representative of the particulate material. The system includes circuitry which amplifies and filters the output signal to provide a processed signal corresponding to said frequency component and which includes means for utilizing said processed signal, e.g., an alarm activated when a certain sand content condition in the flow stream is exceeded.,下面是Method and apparatus for detecting particulate material in flow stream专利的具体信息内容。
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