Hubei Hannas Tech Co.,Ltd－Professional Piezoceramic Elements Supplier
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SF-18
Piezohannas
SF-18
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 |
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 |
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 |
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.
