发明授权
- 专利标题: Vibration measuring instrument
- 专利标题(中): 振动测量仪
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申请号: US525466申请日: 1995-09-08
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公开(公告)号: US5728952A公开(公告)日: 1998-03-17
- 发明人: Hironobu Yao , Hiroyuki Yoshimura , Masato Takahashi , Michihiko Tsuruoka , Iwao Matsumoto , Masakazu Kawakami , Keita Okawa
- 申请人: Hironobu Yao , Hiroyuki Yoshimura , Masato Takahashi , Michihiko Tsuruoka , Iwao Matsumoto , Masakazu Kawakami , Keita Okawa
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Electric Co., Ltd.
- 当前专利权人: Fuji Electric Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX6-215663 19940909; JPX7-017588 19950206
- 主分类号: G01F1/84
- IPC分类号: G01F1/84 ; G01N9/00
摘要:
The precision of phase difference obtained by a phase difference calculating unit is improved by correction through outputs of a frequency ratio calculating unit and a temperature calculating unit considering that the phase or time difference of each output signal of a vibration sensor indicating the mass flow or density of a fluid is a function of the temperature and axial force on a measurement pipe, or that the axial force is a function of the ratio between two resonant frequencies.
公开/授权文献
- US5185956A Wafer slicing and grinding system 公开/授权日:1993-02-16