Hubei Hannas Tech Co.,Ltd－Professional Piezoceramic Elements Supplier
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Piezohannas
40kHz Cylinderical Acoustic Transducer for Underwater Acoustic Positioning
Measurement Contents:
1.1. Conductivity and Susceptance Parameters: Measuring the transducer's conductivity and susceptance data.
1.2. Transmitting Voltage Response: Measuring the transmit voltage response within the 30kHz–50kHz frequency band; at 40kHz, it should be no less than 140dB.
1.3. ReceivingSensitivity: Measure the receiver sensitivity within the 30kHz–50kHz frequency band; at 40kHz, it should be no less than -198dB.
1.4. Directivity: Provide the transducer's horizontal and vertical directivity at 40kHz.
1.5. Hydrostatic Pressure: 3MPa.
2. Measurement Data:
Conductivity and Susceptance Parameters
f/kHz | G/ms | B/ms |
30 | 0.518 | 3.572 |
32 | 0.691 | 3.792 |
34 | 0.915 | 3.985 |
36 | 1.220 | 4.049 |
38 | 1.398 | 3.878 |
40 | 1.317 | 3.723 |
42 | 1.109 | 3.730 |
44 | 0.904 | 3.856 |
46 | 0.744 | 4.062 |
48 | 0.616 | 4.312 |
50 | 0.503 | 4.606 |
f/kHz | SvL/dB |
30 | 136.4 |
32 | 138.5 |
34 | 139.9 |
36 | 141.6 |
38 | 143.3 |
40 | 142.5 |
42 | 140.2 |
44 | 140.4 |
46 | 138.8 |
48 | 137.5 |
50 | 137.0 |
f/kHz | Mx/dB |
30 | -198.2 |
32 | -195.9 |
34 | -195.0 |
36 | -194.3 |
38 | -194.5 |
40 | -195.1 |
42 | -196.8 |
44 | -196.6 |
46 | -200.3 |
48 | -202.8 |
50 | -203.8 |
Vertical Direction
Hydrostatic Pressure Test : After undergoing 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 was greater than 200MΩ.
Measurement Results: The transducer meets the technical specifications.
