专利检索 ap:("Elster Messtechnik GmbH") AND inv:"RALBERG, Staffan,c/o Hansson" 第 1 页

1.

发明公开
A DEVICE AND A METHOD FOR NON-CONTACTING SENSING OF THE ROTATIONAL STATE OF A ROTOR 有权
标题翻译： FOR转子的旋转状态，无接触温度测量的装置和方法

公开(公告)号：EP1325286A1

公开(公告)日：2003-07-09

申请号：EP01950126.1

申请日：2001-07-02

申请人： Elster Messtechnik GmbH

发明人： KJELLIN, Tord , RALBERG, Staffan,c/o Hansson

IPC分类号： G01F1/075 , G01P3/42 , G01D5/20

CPC分类号： G01P13/045 , G01D5/2013 , G01D5/202 , G01F1/075 , G01P3/488

摘要： A device and a method for non-contacting sensing of the rotational state of a rotor (10). The rotor has a surface divided into an electrically conductive part (1e) and a non-conductive part (1f). Three electric coils (2a, 2b, 2c) are each included in a respective parallel resonant circuit and are applied close to and with their longitudinal axes oriented towards the rotational path of the electrically conductive part of the rotor. The resonant oscillations are damped depending on the rotational position of the rotor. The rotational state is evaluated with an electronic circuit. In a liquid-flow meter, the coils may be applied in the dry part of the meter.