Signal Quality Metrics - Emerson 5301HxxxxxxxxxxxxxxZZ Series Reference Manual

Advanced configuration
April 2019
D.7

Signal Quality Metrics

Signal Quality Metrics indicates the surface signal integrity compared to the noise. It can
be used to schedule maintenance to clean the probe or detect and monitor turbulence,
boiling, foam and emulsions.
Figure D-12: Echo Curve Showing Surface Peak Amplitude, Noise Peak Amplitude,
and Surface Threshold
A. Amplitude, mV
B. Distance, m
C. Surface peak amplitude (P1)
D. Surface Threshold=Amplitude Threshold Curve (ATC)
Signal quality
Signal Quality is a measurement of the surface peak amplitude (P1) compared to the
surface threshold (ATC) and the smallest marginal between the noise and the ATC above
the surface (indicated with a circle) compared to the ATC. The Signal Quality spans from 0
414
Figure D-11: Echo Curve Showing Echo Peak from Reference Reflector (Plot
from 2-inch Chamber with Short Reference Reflector)
0
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