Patent ID: 6734819
Filing Date: 2004-05-11
Classification: G01F,G01S

Abstract:
A level measuring device operating with microwave bursts, for producing a level value representative of a level in a vessel, said level measuring device comprising:a transceiver unit for generating a level-dependent intermediate-frequency signal by means of a transmit signal and a receive signal; a transducer element which in operation couples transmitted waves, particularly pulsed waves, into the vessel under control of the transmit signal and which converts echo waves reflected from the contents of the vessel into the receive signal; and a control unit with a volatile data memory for storing, at least temporarily, a finite sampling sequence currently representing the intermediate-frequency signal, wherein: the volatile data memory holds, at least temporarily, a digital envelope which represents a temporal amplitude variation of the intermediate-frequency signal; and the volatile data memory holds, at least temporarily, a data record which corresponds to a phase of a data record of the sampling sequence and represents a result of a numerical division of said data record by an essentially equal-locus data record of the envelope.