METHOD AND DEVICE FOR MEASURING THE SURFACE VELOCITY AND FLOW RATE OF A FLUID FLOWING IN A CHANNEL OR PARTIALLY FILLED PIPE

摘要

The invention relates to a device (7) for measuring the surface velocity of a fluid (10) flowing through a pipe or a channel (12), said device (7) comprising a patch antenna (1) with a transmitting area (1a) generating a microwave signal and a receiving area (1b) receiving the microwave signal reflected on the surface of the fluid (10), the device (7) being characterized in that it comprises an electrically conductive tube (8), called reflector tube, with at least the transmitting area (1a) of the patch antenna (1) mounted at one end (8a) of the reflector tube (8) to modify the pattern of the generated microwave signal.;The invention also relates to the non-invasive method for measuring the surface velocity of the fluid using said device (7).