EDAN SONOTRAX Basic User Manual - page 43
SONOTRAX Series Ultrasonic Pocket Doppler User Manual Overall Sensitivity
- 38 -
Overall Sensitivity (3.0 MHz Probe)
Two-way Attenuation
B=
∑B
a
+B
w
Diameter of
Target
Reflector
(mm)
Distance
(d)
(mm)
Reflection
Loss A(d)
(dB)
∑B
a
(T:mm B
a
:dB)
B
w
(dB)
B
(dB)
V
s
(r.m.s.)
mV
V
n
(r.m.s)
mV
(
)
(
)
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
=
.
.
.
.
.
.
log
20
10
s
m
r
V
s
m
r
V
C
n
s
dB
Overall
Sensitivity
(S=A(d)+B+C)
dB
T 10
4 - -
50
B
a
43.6
17.9
- -
0 61.5 179
90
5.97
111.9
T 10
3 - -
75
B
a
43.6
13.5
- -
0 57.2 186
94
5.93
107.63
T 10
3 - -
100
B
a
43.6
13.5
- -
0 57.2 173
88
5.87
107.5
T 10
1 - -
1.58
A=44.5dB@
3MHz
200
B
a
43.6
6.5 - -
0 50.2 171
89
5.67
100.3
T 10
4 - -
50
B
a
43.6
17.9
- -
0 61.5 194
88
6.73
110.2
T 10
3 - -
75
B
a
43.6
13.5
- -
0 57.2 172
87
5.92
105.1
T 10
2 - -
100
B
a
43.6
9.6 - -
0 53.2 165
85
5.76
100.9
T 10
1 - -
2.38
A=42.0dB@
3MHz
200
B
a
43.6
6.5 - -
0 50.2 160
84
5.59
97.8
Doppler Frequency (Hz)
500
Velocity of Target (cm/s)
12.5