The processing subsystem is responsive to the transit timesignal and the range gated Doppler signal and configured to generate a velocity profile and a mean velocity of the fluid in the conduit.
The general problem in the fatigue test system that the amplitude and mean of load signal will be changed with test time and change of mechanical characters of specimens is analyzed.
The measuring vibrating signal method may be used on real time, mean while, vibrating signal can be measured by peak to peak value or true virtual value .