Mass flow measurement using oscillating vanes - involves moving vanes at 90 degrees to flow at given frequency and amplitude and measuring power consumption

摘要

The system is used for measuring the rate of mass flow of a fluid through a pipeline. The pipe (12) contains an impulse producing system (10) which consists of a number of narrow blades (11) lying edge on the fluid flow (16). The assembly of-blades is supported on two spring leaves which allow an up-and-down motion (15). This motion is controlled and measured by a transducer (14). The impulse producing system (10) may be given a sinusoidal motio at a given amplitude and frequency, and the power requirement for maintaining this motion is measured.