45
Table 1 Image performance Indexes
Mode
Order
number
Project
Probe model
C5-2Fs
C5-2Ks
L11-4Ks
L11-4Gs
C8-5Ks
B/M
A
Probe
nominal
frequency (MHz)
3.5
3.5
7.5
7.5
6.5
B
Deviation
between acoustic
working
frequency and
nominal
frequency(%)
±
15
±
15
±
15
±
15
±
15
C
Maximum
detection
depth(mm)
≥
180
≥
170
≥
60
≥
60
≥
60
D
lateral resolution
(mm)
≤
2(depth
≤
80)
≤
3(80
＜
depth
≤
130)
≤
2(depth
≤
80)
≤
3(80
＜
depth
≤
130)
≤
2
(depth
≤
50)
≤
1
(depth
≤
50)
≤
2
(depth
≤
50)
E
Azimuthal
resolution (mm)
≤
1(depth
≤
80)
≤
2(80
＜
depth
≤
130)
≤
1(depth
≤
80)
≤
2(80
＜
depth
≤
130)
≤
1
(depth
≤
60)
≤
1
(depth
≤
60)
≤
1
(depth
≤
60)
F
Fade zone(mm)
≤
3
≤
3
≤
3
≤
3
≤
3
G
Slice
thickness(mm)
≤
8
≤
8
≤
8
≤
8
≤
8
H
Transverse
geometric
position
precision(%)
≤
10
≤
10
≤
5
≤
10
≤
10
I
Longitudinal
geometric
position
precision(%)
≤
10
≤
10
≤
5
≤
5
≤
5
J
Perimeter and
area
measurement
deviation(%)
±
15
±
15
±
15
±
15
±
15
K
M mode time
display
deviation(%)
≤
10
≤
10
≤
10
≤
10
≤
10
Color
L
Service
frequency
（
MHz
）
2.0
3.5
2.5
3.5
5.0
6.0
6.0
7.5
6.0
6.5
