Emerson Rosemount 3308 Series Reference Manual page 215

Reference Manual
00809-0100-4308
Figure D-6: Strapping Points
A. Actual tank bottom may look like this.
B. Using only three strapping points results in a level-to-volume profile that is more angular
C. Using six of the points at the bottom of the tank yields a level-to-volume profile that is
D.2.4 Alert setup
Signal quality alert
This section applies only to transmitters ordered with Smart Diagnostics Suite (option
code DA1).
Signal Quality is a measure of the product surface echo amplitude compared to the
surface threshold and noise.
The Signal Quality spans from 0 to 10. A low value means that there is a risk for the noise
peak to be mistaken for the product surface peak.
Note
The Signal Quality depends on probe type and application conditions, as well as the
condition of the probe. Even if the probe is clean, Signal Quality may not be a 10.
Build up on the probe and different surface conditions are factors that can result in a low
Signal Quality value. By setting an alert, the Signal Quality value can be used to schedule
maintenance to clean the probe.
Suitable alert limits vary from application to application. Appropriate value can be
determined by logging Signal Quality over time and viewing maximum/minimum values.
The Signal Quality Alert limit should be at least 1, but a better guideline is 2-3.
Reference Manual
than the actual shape.
similar to the actual tank bottom.
Configuration parameters
February 2020
215