发明名称 |
Phase track system for monitoring fluid material within a container |
摘要 |
Acoustical energy is directed into a vessel containing an unknown volume of fluid at a frequency at or near the Helmholtz resonance of the vessel. The signal generated within the vessel is analyzed to compare its phase relationship to an electrical reference input signal. The volume of fluid in the vessel may then be determined from said phase relationship, such as by previous empirical calibration of the vessel.
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申请公布号 |
US4991433(A) |
申请公布日期 |
1991.02.12 |
申请号 |
US19890410699 |
申请日期 |
1989.09.21 |
申请人 |
APPLIED ACOUSTIC RESEARCH |
发明人 |
WARNAKA, GLENN E.;WARNAKA, MARK E. |
分类号 |
G01F17/00;G01F22/02;G01F23/296 |
主分类号 |
G01F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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