| 摘要 |
The method determines flow rate by measurement of the local pressure at a measurement point in the vicinity of an inlet opening of a free suction fan (15). A measurement probe (20), open at one end, is used as a measurement device and oriented with its longitudinal axis in the inflow direction. The measurement point (20a) is situated axially inside an outer radial plane (B), which is located at an axial distance (a) outside an inner radial plane (A). The measurement point is located adjacent the inner radial plane (A), though always in the narrowest section of the fan inlet. |
