Ultraflux Uf 811, User Manual, Page: 82 / 104

82
NT UF 811 CP GB (e) / June 2015
The most common echo signals
The display of the echo signal is not essential, but does facilitate the implementation of the measuring point.
It also allows the origin of a problem to be detected.
The positioning and orientation of the probes are correct when the amplitude of the echo is at its maximum
and the echo is rising rapidly, without too much distortion (deformations).
The following figures show the most commonly observed echo signals:
 Ideal signal: quick rise well above the detection threshold.
Comment: The signals observed are often longer than the one shown above. This is completely
normal, the important criterion being the velocity of the signal rise above the threshold.
 Slowly rising signal:
 Signal distorted by an incorrect positioning of the probes: