In-production calibration of a measuring device for a capacitive level measurement and corresponding measuring device

作者: Kaj Uppenkamp , Armin Wernet , Igor Getman , Roland Dieterle

DOI:

关键词: CalibrationAlternating currentPhase (waves)Electrical engineeringAcousticsSignalCapacitive sensingElectrical resistivity and conductivityValue (computer science)Materials scienceCapacitance

摘要: The invention relates to a method for an in-production calibration of measuring device (1) capacitive measurement the level medium (10), according which at least one probe unit (2) is controlled by electric control signal, alternating current with predeterminable frequency. According invention: conductivity zone determined in accordance frequency essentially independent modification (σ) (10); first reference assignment generated between value and capacitance that associated value; stored. also corresponding device. In addition, deposit forms on evaluated using response signal phase.