公开(公告)号：US20150253267A1

公开(公告)日：2015-09-10

申请号：US14434117

申请日：2013-10-10

申请人： ABB INC.

发明人： Réal Quellet ,  Jacques Marcotte ,  Patrick Couture ,  Sylvio Laplante ,  Bruno Simard

IPC分类号： G01N27/00 ,  G01R23/02

CPC分类号： G01N27/00 ,  G01N15/02 ,  G01N15/12 ,  G01N33/206 ,  G01R23/02 ,  G06Q10/06313 ,  G06Q10/0637

摘要： An apparatus to detect and measure suspended particles in a molten metal where the suspended particles have an associated noise frequency range has in addition to the electrically non-conductive barrier for immersion in the molten-metal, a device to move the molten metal through an orifice in the barrier and electrodes, a time varying excitation source that generates an AC current at a predetermined range of excitation frequency that is out of the predominant noise frequency range to generate an AC signal that is representative of the measure of the suspended particles. A detector detects and quantifies from the measurement AC signal the suspended particles. The detector can be a synchronous detector.

摘要翻译： 一种用于检测和测量熔融金属中的悬浮颗粒的装置，其中悬浮颗粒具有相关联的噪声频率范围，除了用于浸入熔融金属中的不导电屏障外，还有一种使熔融金属移动通过孔口的装置 在屏障和电极中，产生在超出主要噪声频率范围的激励频率的预定范围内的AC电流的时变激励源，以产生代表悬浮颗粒的测量的AC信号。 检测器从测量AC信号中检测并量化悬浮颗粒。 检测器可以是同步检测器。