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专利名称：Method of estimating the electrostatic force
on an object to be weighed by applyingcharges of opposite polarity to alternatingelectrodes and measuring the resultantforces
发明人：Stefan Bühler申请号：US14159081申请日：20140120公开号：US09194736B2公开日：20151124
专利附图：
摘要：A method estimates the effect on the weighing result of a balance () that iscaused by electrostatic charges on an object () received on a load receiver () thereof. Afirst predefined positive voltage (U) and a second predefined negative voltage (U) ofequal magnitude are alternatingly applied to a first electrode () in the vicinity of theweighing object. The forces acting on a force-measuring cell () are measured and areregistered as the first and second measurement results. The difference between therespective measurement results represents the magnitude of the influence that theelectrostatic charges residing on the weighing object are having on the weighing result.The difference also represents an essentially proportional part of the force resultingfrom electrostatic charges on the weighing object which causes a change in the weighingresult and is sent as a signal to a processor unit.
申请人：Mettler-Toledo AG
地址：Greifensee CH
国籍：CH
代理机构：Standley Law Group LLP
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