Invention Grant
- Patent Title: Web measurement device
- Patent Title (中): Web测量设备
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Application No.: US12200302Application Date: 2008-08-28
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Publication No.: US07847943B2Publication Date: 2010-12-07
- Inventor: Ake Hellstrom , Rambod Naimi , Michael O'Hora
- Applicant: Ake Hellstrom , Rambod Naimi , Michael O'Hora
- Applicant Address: IE
- Assignee: ABB Ltd.
- Current Assignee: ABB Ltd.
- Current Assignee Address: IE
- Agent Michael C. Prewitt; Paul R. Katterle
- Main IPC: G01N21/84
- IPC: G01N21/84
Abstract:
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.
Public/Granted literature
- US20090059232A1 Web Measurement Device Public/Granted day:2009-03-05
Information query
