发明名称 SENSOR
摘要 A cell for sensing conductivity of a fluid such as diolysate passing through it. The cell comprises a fluid flow path having an inlet 22 and an outlet 24 and two fluid paths 26, 28 between the two, thereby defining a fluid loop. An excitation transformer 14 comprises a first toroidal core having a hole through it and wire turns around it, the core ecompassing a portion of the fluid flow path means and the fluid loop therein. A sensing transformer 16 comprises a second toroidal core having a hole through it and wire turns around it, the core encompassing a portion of the fluid flow path means and the fluid loop. The two cores are coplanar to thereby reduce leakage between the transformers. The excitation transformer is driven by a square wave excitation signal provided by a digital timer and a flip-flop, and the sensing transformer is connected to a synchronous detector. <IMAGE>
申请公布号 GB8711173(D0) 申请公布日期 1987.06.17
申请号 GB19870011173 申请日期 1987.05.12
申请人 COBE LABORATORIES INC 发明人
分类号 G01N27/06;A61M1/16;G01N27/02;G01N27/10;G01N27/72;G01N27/74;G01R27/22;(IPC1-7):G01N27/08 主分类号 G01N27/06
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