Custom 18khz Spherical Acoustic Transducer Spherical Hydrophone
Product Description
33khz Spherical Acoustic Transducer transmitting Receiving Acoustic Transducer
Technical Parameters：
1. Measurement Content:
1.1. Receiving Sensitivity: Measure the receiver sensitivity of the transducer within the 10kHz–40kHz frequency band, with a minimum of -205dB at the resonant frequency.
1.2. Transmitting Response: Measuring the transmitting response of the transducer within the 10kHz–40kHz frequency band, with a minimum of 145dB at the resonant frequency.
1.3. Source Level: No less than -192dB at the resonant frequency.
1.4. Horizontal Directivity: Measure the horizontal directivity at the resonant frequency, with a fluctuation of less than 3dB.
1.5. Vertical Directivity: Measure the vertical directivity at the resonant frequency, with a -3dB vertical opening angle greater than 180°.
1.6. Hydrostatic Pressure: 3MPa.
2. Measurement Data
Conductivity and susceptance parameters
f/kHz |
G/ms |
B/ms |
10 |
0.41 |
7.49 |
12 |
0.75 |
9.10 |
14 |
1.43 |
10.70 |
16 |
2.42 |
11.80 |
18 |
3.24 |
12.10 |
20 |
3.14 |
12.30 |
22 |
2.54 |
12.90 |
24 |
1.94 |
14.00 |
26 |
1.44 |
15.40 |
28 |
1.18 |
16.90 |
30 |
1.08 |
18.40 |
32 |
1.18 |
19.90 |
34 |
1.17 |
21.00 |
36 |
0.99 |
22.40 |
38 |
0.93 |
23.90 |
40 |
0.92 |
25.40 |
Transmitting response（dB）
f/kHz |
SvL/dB |
10 |
138.5 |
15 |
144.8 |
18 |
146.6 |
20 |
145.8 |
25 |
142.3 |
30 |
140.1 |
35 |
139.2 |
40 |
138.2 |
Sound source level
f/kHz |
d换/m |
U发/Vpp |
U收/mVpp |
M0/dB |
SvL/dB |
SL/dB |
18 |
2 |
538 |
80 |
-217.1 |
146.6 |
192.1 |
Receiving sensitivity（dB）
f/kHz |
Mx/dB |
10 |
-187.4 |
15 |
-190.0 |
18 |
-189.5 |
20 |
-191.7 |
25 |
-192.7 |
30 |
-196.5 |
35 |
-203.4 |
40 |
-208.4 |
Horizontal Directionality
Vertical Directionality
Hydrostatic Pressure Test: After hydrostatic pressure tests at 3MPa/0.5h, 0MPa/0.25h, and 3MPa/0.5h, the insulation resistance between the positive and negative electrodes of the transducer is greater than 100MΩ.
Measurement Results: The transducer performance meets the requirements.