Flow Characteristics of Vortex Shedding Flowmeters

Abstract

Experiments were carried out on three 2in diameter, commercial vortex shedding flowmeters using a gravimetric flow rig with flows up to 22 l/s. Water, kerosine and a kerosine/spindle oil blend were used at test liquids and accuracy curves of meter factor against flow rate were obtained at temperatures between 20° and 50°C, covering a kinematic viscosity range of 0.5 to 4.3 cSt. This paper presents a discussion of these experimental results and shows that the accuracy of the various flowmeters is not significantly affected by changes in liquid properties over the range of conditions investigated.