发明申请
- 专利标题: Temperature-stabilized sensor coil and current sensor
- 专利标题(中): 温度稳定的传感器线圈和电流传感器
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申请号: US10922944申请日: 2004-08-23
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公开(公告)号: US20050088662A1公开(公告)日: 2005-04-28
- 发明人: Klaus Bohnert , Philippe Gabus , Hubert Brandle
- 申请人: Klaus Bohnert , Philippe Gabus , Hubert Brandle
- 申请人地址: CH Zurich
- 专利权人: ABB Research Ltd
- 当前专利权人: ABB Research Ltd
- 当前专利权人地址: CH Zurich
- 优先权: EP03405641.6 20030903
- 主分类号: G01R15/24
- IPC分类号: G01R15/24 ; G01R33/032 ; G01B9/02
摘要:
The fiber-optic sensor head (2) for a current or magnetic field sensor comprises an optical fiber which contains a magnetooptically active sensor fiber (3) and at least one polarization-maintaining supply fiber (5), which are optically connected, with the sensor fiber (3) having its fiber protective sheath removed. The sensor head (2) furthermore contains a capillary (6), in which at least the sensor fiber (3) is arranged. Furthermore, the sensor head (2) can be bent in the area of the sensor fiber (3), and a friction reducing means (7) is provided in the capillary (6), in order to reduce the friction between the sensor fiber (3) and the capillary (6). The friction reducing means (7) is advantageously an oil or a dry lubricating means (7). The capillary (6) is advantageously encased by a capillary casing (8). The sensor (2) allows very largely temperature-dependent measurements, is easy to install and allows measurements on large cross-section conductors.
公开/授权文献
- US07339680B2 Temperature-stabilized sensor coil and current sensor 公开/授权日:2008-03-04