发明授权
US4958070A Digital electronics for controlling a fiber optic shedding flowmeter
失效
用于控制光纤脱落流量计的数字电子设备
- 专利标题： Digital electronics for controlling a fiber optic shedding flowmeter
- 专利标题（中）： 用于控制光纤脱落流量计的数字电子设备
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申请号： US267896申请日： 1988-11-07
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公开(公告)号： US4958070A公开(公告)日： 1990-09-18
- 发明人: David W. Jordan , William L. Thompson
- 申请人： David W. Jordan , William L. Thompson
- 申请人地址： LA New Orleans
- 专利权人： The Babcock & Wilcox Company
- 当前专利权人： The Babcock & Wilcox Company
- 当前专利权人地址： LA New Orleans
- 主分类号： G01F1/32
- IPC分类号： G01F1/32
摘要：
A digital controlling system for fiber optic vortex shedding flowmeters which provides a new and improved preamp circuit and a computer for correcting temperature, linearity and hysteresis effects. The controlling system overcomes the inherent non-linearity of the vortex shedding phenomena and also provides two-way communication between a central control unit and the fiber optic vortex shedding flowmeter. The improved preamp circuitry increases the low-end range of fiber optic vortex shedding flowmeters.
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