Olympus 38DL PLUS - Table 9 Alarm Calculation Example with the % DIFF Mode

DMTA-10004-01EN, Rev. D, November 2016
Chapter 8 120
— When the thickness differential is greater than the %GROWTH value, a high
alarm is indicated.
Table 9 on page 120 shows the result for an example where both %LOSS is set to
20 % and % GROWTH is set to 5 %.
B‑SCAN
The B-scan alarm mode is similar to the standard alarm mode except that in the
B-scan alarm mode, lines are shown in the B-scan grid when the reference values
fall within the B-scan thickness range (see Figure 8-5 on page 121). In addition, the
alarms are operational as you review B-scan thicknesses in B-scan freeze review
mode.
Table 9 Alarm calculation example with the % DIFF mode
Previous
values
Actual
thickness
Low alarm High alarm Calculations
7.62 mm
(0.300 in.)
6.07 mm
(0.239 in.)
Yes No
or in inches:
7.62 mm
(0.300 in.)
8.03 mm
(0.316 in.)
No Yes
or in inches:
7.62 mm
(0.300 in.)
7.24 mm
(0.285 in.)
No No
or in inches:
7.62 mm
(0.300 in.)
7.67 mm
(0.302 in.)
No No
or in inches:
7.62 6.07–
7.62
---------------------------
100× 20%>
0.300 0.239–
0.300
---------------------------------
100× 20%>
8.03 7.62–
7.62
---------------------------
100× 5%>
0.316 0.300–
0.300
---------------------------------
100× 5%>
7.62 7.24–
7.62
---------------------------
100× 20%<
0.300 0.285–
0.300
---------------------------------
100× 20%<
7.67 7.62–
7.62
---------------------------
100× 5%<
0.302 0.300–
0.300
---------------------------------
100× 5%<