| Original document(26 pages) Authorized document(14 pages) 中文版 |
The velocity of a liquid jet, such as the headbox jet of a paper making machine, is measured by cross-correlation of a.c. signal components produced by a pair of light beams received by a pair of photodiodes. The light is supplied by a single source, an incandescent lamp, and is guided by a pair of bifurcated fiber optics mounted above the jet and spaced apart in the flow direction. The a.c. components are filtered to remove low frequencies, amplified and then analyzed in a spectrum analyzer. |
Application Number
申请号 |
85103950 |
Application Date
申请日 |
1985.05.21 |
| Title 名称 |
Method and apparatus for headbox jet velocity measurement |
Publication Number
公开号 |
1009149 |
Publication Date
公开日 |
1987.03.04 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
D21F1/06,G01P3/36 |
Applicant(s) Name
申请人 |
Beloit Corp. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
HUANG KAIDONG |
| More information 更 多 信 息 |
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