Emerson Rosemount 3308 Series Reference Manual page 125

Reference Manual
00809-0100-4308
Figure 6-6
amplitude peak at the interface between the upper and lower products is not detected in
this case.
Figure 6-6: Echo Curve Plot Indicating that the Interface Threshold for the Interface
Peak Is Too High
A. Amplitude
B. Distance
C. Surface Threshold
D. Product Surface Peak
E. The Interface Threshold is above the Interface Peak.
By adjusting Interface Threshold, the peak at the interface between the upper and lower
products is detected as illustrated in
Figure 6-7: After Changing the Interface Threshold the Transmitter Detects the
Interface
A. Amplitude
B. Distance
C. Surface Threshold
D. After Interface Threshold is adjusted the interface is correctly detected.
Reference Manual
illustrates a situation where the Interface Threshold is too high. The signal
Figure 6-7.
Service and troubleshooting
February 2020
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