发明授权
- 专利标题： Web measurement device
- 专利标题（中）： Web测量设备
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申请号： US12200258申请日： 2008-08-28
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公开(公告)号： US07889342B2公开(公告)日： 2011-02-15
- 发明人: Ake Hellstrom , Rambod Naimi , Michael O'Hora
- 申请人： Ake Hellstrom , Rambod Naimi , Michael O'Hora
- 申请人地址： IE Dublin
- 专利权人： ABB Ltd.
- 当前专利权人： ABB Ltd.
- 当前专利权人地址： IE Dublin
- 代理商 Michael C. Prewitt; Michael M. Rickin
- 主分类号： G01N21/84
- IPC分类号： G01N21/84
摘要：
A sensor is provided that measures web caliper using optical and magnetic measuring devices. The optical measuring devices may employ a confocal chromatic aberration method to accurately determine the distance to the moving web and the magnetic devices may be ferrite core coil and target. Means of stabilizing a moving web are included for improving dynamic measurement accuracy.
公开/授权文献
- US20090056156A1 Web Measurement Device 公开/授权日：2009-03-05
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