THE ULTRASONIC CROSS-CORRELATION FLOW METER – NEW INSIGHTS INTO THE PHYSICAL BACKGROUND
V. Skwarek, V. Hans
Abstract:
During the last years of research, flow measurement by the cross correlation method made much progress concerning accuracy and reliability. Especially for gaseous fluid the signal processing was far improved by new demodulation techniques such as undersampling and complex demodulation. This allows new insights into the physical principle of interaction between ultrasound and fluid introduced in this paper.
