Title: Method for correcting an analogue amplifier output signal, amplifier module and measurement device
Application Number: 200610169038 Application Date: 2006.12.19
Publication Number: 1987363 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D3/00;G01D3/028;G01D3/036;G01B7/16;G01L1/22;H03F3/45;H03F3/217;H03F1/30
Applicant(s) Name: Mettler Toledo AG Address:
Inventor(s) Name: Bucher Cyrill;Reber Daniel;Ouellette Philip R.
Attorney & Agent: linjin hui
Abstract:
    The present invention provided a method for correcting the transfer error of an analog amplifier. The transfer error arises from the physical limit of the limited ability of the analog amplifier when following the jump of the amplifier input signal, which is induced by the switch. In a measuring device which includes at least one sensor and a signal processing unit connectting to the sensor and the analog amplifier, wherein, the signal processing unit comprises at least one modulator and/or a multiplexer, an analog amplifier, and at least one processing stage fllowing the analog amplifier value in electrical chain. Said processing stage separates from the amplifier according to the time point when the switch jump occurd, and by means of the switch which is arranged between the amplifier and the processing stage, during the predeterminate overtime phase duration. And the processing stage is controled by the time-out controller, and/or according to the time point when the switch jump occurd, said processing stage is blocked by the time-out controller during the predeterminate overtime phase duration.
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