May 2016
Reference Manual
00809-0100-4530, Rev DD
324
C.9
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 C-16. Echo Curve Showing Surface Peak Amplitude, Noise Peak Amplitude, and
Surface Threshold
The following diagnostics measurements are available:
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 to 10, where 0 indicates a low margin, and 10 indicates a
high margin. It indicates how much margin there is until the noise peak is indicated as the
surface level.
Surface / Noise Margin
is the relationship between surface peak amplitude and the
amplitude of the strongest noise peak above the surface. The Surface / Noise Margin spans
from 0 to 10, where 0 indicates a low margin, and 10 indicates a high margin. It indicates
how much disturbance the device can handle in the tank.
Note
The signal amplitude and the noise margin depend on probe type and application
conditions, as well as the condition of the probe. Even if the probe is clean, Signal Quality
and Surface / Noise Margin may not be a 10.
To check if Signal Quality Metrics is supported, do one of the following:
If “DA1” or “D01” is mentioned in the model code on the label, the device supports
Signal Quality Metrics.
Model Code:
530xxxxxxxxxxxxxxxx
DA1 or
530xxxxxxxxxxxxxxxx
D01
xx
In RRM:
1. Connect to the device.
2. Right click on the device and select
Properties
.
3.0
4.0
5.0
6.0
P1
Distance, m
Surface Threshold=
Amplitude Threshold
Curve (ATC)
Reference Threshold
Amplitud
e,
mV
Содержание 5300 Series
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