/pdf/ultrasonic-meter-testing-for-storage-applications-by3lilqnsn.pdf

Ultrasonic meter testing for storage applications

/pdf/ultrasonic-meter-testing-for-storage-10ynkdmmeg.pdf

Ultrasonic meter testing for storage

Gasunie has performed tests on two types of installation effects on multipath ultrasonic gas meters with a diameter of 500 mm. The effect of mildly wet flows was studied by injecting liquids in the gas flow and monitoring changes in signal and noise levels and in the meter error. It was concluded that small amounts of liquids do not affect the meter error, and that the meter itself can detect if signal to noise ratios are distorted so much that proper functioning is no longer possible. The effect of swirling flow was studied for two types of meter with significantly differing path geometries: a 4-path criss-cross arrangement and a 5-path reflection arrangement. For swirl angles up to 10 degrees, the effect on the meter errors was up to 0.8% and 0.4% resp.

A.M. Dam

Papers

The effects of dirt and swirling flow on multipath ultrasonic gas flow meters