| 摘要 |
The present invention relates to a vortex frequency flow meter for determining the rate of flow of a liquid or gaseous medium through a pipeline with an obstructor (bluff body) mounted therein, said obstructor comprising lateral surfaces arranged essentially parallel to the flow and terminating in both directions of flow at vortex shedding edges, whereby at least one sensor for detecting vorteces periodically shedding from the shedding edges is disposed in at least one of said lateral surfaces. It is the object of the invention to develop such a vortex frequency flow meter in such a manner that it allows not only measuring operation in both directions of flow, but also a determination of the direction of flow using simple means. This task is solved in that the at least one sensor (16) is disposed off-centre-as seen in the direction of flow (20, 21)-between the shedding edges (8, 8.1; 9, 9.1). |
