A sample analysis system with a anti synchronously actuated contactless conductivity detector

摘要

A sample analysis system (ap1, ap2; ap3) with the following features:a separating means (110; 210; 310) for the separation of sample components, when the same along a longitudinally extending channel (113; 213; 313), said separating means the passage comprises;a detector (120; 220; 320) for detecting sample components, which move along the channel, wherein the detector has the following features:a detection electrode (130; 230; 330), which is capacitively coupled with the channel;a first and second driver electrode (121, 123; 121, 125; 221, 223; 321, 323), wherein the first driver electrode (121; 221; 321) through the channel with the detection electrode is electrically coupled;a driving means (127; 227; 327) to the anti synchronous drive of the first and second driver electrode, wherein said driving means with the driver electrodes is electrically coupled; anda signal processing means (140; 240; 340) for providing an output signal which represents the content of the channel, when the sample components on the detection electrode..