发明名称 |
FLUID METER OF THE ULTRASONIC TYPE FOR ATTENUATION OF PARASITIC ULTRASONIC WAVES |
摘要 |
The invention relates to an ultrasonic fluid counter (10; 110) comprising at least two ultrasonic transducers (12, 14) defining between each other an ultrasonic measuring path and emitting and receiving the ultrasonic waves in the fluid along said ultrasonic measuring path at at least one ultrasonic frequency, characterised in that attenuation means (30, 36, 46, 52, 60, 70, 80, 90, 95, 180) of the parasitic ultrasonic waves generated externally to said fluid meter and transmitted by the fluid at the ultrasonic frequency or frequencies are associated with the fluid meter.
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申请公布号 |
WO9706415(A1) |
申请公布日期 |
1997.02.20 |
申请号 |
WO1996FR01220 |
申请日期 |
1996.08.01 |
申请人 |
SCHLUMBERGER INDUSTRIES S.A.;LIGNEUL, PATRICE;HOCQUET, PHILIPPE;FROELICH, BENOIT |
发明人 |
LIGNEUL, PATRICE;HOCQUET, PHILIPPE;FROELICH, BENOIT |
分类号 |
G01F1/66;(IPC1-7):G01F1/66 |
主分类号 |
G01F1/66 |
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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