Filter
Top Products
25
Reference Manual
00809-1600-4530, Rev AA
Section 4: Verification Procedure with Fluid
March 2015
Verification Procedure with Fluid
4.2 Common problems and recommended actions
Surface pulse not detected
Figure 4-3. Surface Threshold too High
Surface measurement is too high
Figure 4-4. Surface Threshold too Low
3.0
5.0
A
B
The Surface Threshold is
above the Surface peak
Distance, m
Amplitude, mV
A. Surface Threshold= Amplitude Threshold Curve (ATC)
B. Reference Threshold
3.0 5.0
A
B
Amplitude, mV
Distance, m
A. Surface Threshold= Amplitude Threshold Curve (ATC)
B. Reference Threshold
Disturbing echo
misinterpreted as
product surface
Actual Surface