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1. 发明授权

US4449405A Rod-like probe for the capacitive measurement of the level in a container 失效
标题翻译：用于容器中电平测量的杆状探针
公开(公告)号：US4449405A
公开(公告)日：1984-05-22
申请号：US283209
申请日：1981-07-14
申请人： Han-Jurgen Franz , Volker Dreyer
发明人： Han-Jurgen Franz , Volker Dreyer
IPC分类号： G01F23/00 , G01F23/26
CPC分类号： G01F23/263
摘要： Disclosed is a capacitance level measuring device comprised of a container whose level is to be measured and a probe inserted into and spaced from the container. The capacitance between the probe and container varies in relation to the level in the container. A capacitance measuring circuit determines the capacitance between the probe and container and thus indicates the level in the container. The integrity of the probe is verified by constructing the probe so as to include it in a series circuit, as well as the capacitance measuring circuit, and a lack of continuity in the probe is indicative of questionable probe integrity. The question as to the probe's integrity would indicate a questionable level indication from the capacitance measuring circuit. Various probe constructions are also disclosed.
摘要翻译：公开了一种电容水平测量装置，其包括其水平被测量的容器和插入并与容器间隔开的探针。探头和容器之间的电容相对于容器中的电平变化。电容测量电路确定探头和容器之间的电容，从而指示容器中的电平。通过构建探针以将其包括在串联电路以及电容测量电路中来验证探针的完整性，并且探针中缺乏连续性指示了可疑的探针完整性。关于探头完整性的问题将表明电容测量电路有问题的电平指示。还公开了各种探针结构。

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