| 摘要 |
PCT No. PCT/GB95/00980 Sec. 371 Date Feb. 18, 1997 Sec. 102(e) Date Feb. 18, 1997 PCT Filed Apr. 28, 1995 PCT Pub. No. WO95/30129 PCT Pub. Date Nov. 9, 1995A system and method for determining a volume rate fluid, particularly liquid such as sewage, comprises a conduit for passage of sewage, a freely pivotable flap valve mounted at an outlet of the conduit and carrying a sensor. This sensor monitors the angular position of the flap valve and provides an electronic output representative of fluid volume flow through the conduit.
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