| 摘要 |
The present invention is directed to a flow measuring device according to the principle of the Karman vortex path, with a vortex-generating choke body which is adapted to be positioned within a pipe section and which comprises a prismatic forward part of trapezoidal cross-section which is positioned in said pipe section with its larger forward parallel surface against the flow direction, and a slab-shaped extension which follows the prismatic part's rearward parallel surface and which extends in the flow direction, and which also includes pressure pickups positioned inside said prismatic part of the choke body, such that said pickups can measure the periodic pressure variations which are generated by the vortex separation.
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