An Improved Measurement Algorithm for Increasing the Accuracy of Sing-Around Type Ultrasonic Flow Meters

Reducing the additional error caused by the time‐difference method in transit‐time UFMs

“…In (12), if e(t) is the white noise or a non-correlated noise, its correlation with x(t) is almost zero and (12) becomes as follows:…”

“…The sing-around method is a non-statistical method on which a lot of works have been done. It has managed to achieve high time resolutions [11,12]. In this way, measured time resolutions can be better than the electronic clock time resolution, and the result is a more accurate measurement of the ToF.…”