| 摘要 |
PCT No. PCT/NL83/00020 Sec. 371 Date Jan. 17, 1984 Sec. 102(e) Date Jan. 17, 1984 PCT Filed May 19, 1983 PCT Pub. No. WO83/04106 PCT Pub. Date Nov. 24, 1983.Method and apparatus for the measurement of fluid flow velocities for instance in a slurry transport conduit, in which pulse signals are sent through the fluid by pairs of transmitting and receiving transducers, the pulses having such time separation that standing waves caused by reflection fade out within the time separation, and using side band techniques and correlation techniques.
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