FLÜSSIGKEITSSTAND-TASTSONDE UND STEUERSCHALTUNG
A method and apparatus for a liquid level sensor control circuit of a bioassay apparatus for controlling a position of a sampling probe with respect to a surface of a liquid in a container. The apparatus includes a sampling probe, an oscillator circuit coupled to the sampling probe for producing a f...
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Main Authors | , |
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Format | Patent |
Language | German |
Published |
15.05.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | A method and apparatus for a liquid level sensor control circuit of a bioassay apparatus for controlling a position of a sampling probe with respect to a surface of a liquid in a container. The apparatus includes a sampling probe, an oscillator circuit coupled to the sampling probe for producing a first output signal having a constant frequency, a comparator coupled to the oscillator circuit for comparing the amplitude of the first output signal to a first reference amplitude and for producing a change signal when the amplitude of the first output signal changes with respect to the reference amplitude, and a controller responsive to the change signal for controlling the position of the sampling probe with respect to the surface of the liquid. |
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Bibliography: | Application Number: AT19940201933T |