The design of a vortex shedding flowmeter has been optimized for its standardization. The optimization was achieved by evaluating the linearity of the flowmeters with various bluff bodies. The effect of the installation conditions of the flowmeter on the measurement error and the sensitivity of each flowmeter dimension to the flowmeter output of the flowmeter were also evaluated. A new design method based on theses experimental results has been published in Japan Industrial Standard Z 8766-2001, which will improve the measurement uncertainty significantly and also reduce the manufacturing cost.

AIST Today Vol. 1, No. 9 (2001) 18