Low Price 20Hz-20kHz Cylindrical Receiving Transducer Hydrophone for Transducer Array

1. Measurement Content:
Receiving Sensitivity:
Measuring the receiving sensitivity of the transducer within the frequency band of 0.02kHz to 20kHz. The sensitivity should not be lower than -192dB.
Horizontal Directivity:
Omnidirectional, measurement frequency 20kHz.
Vertical Directivity:
Omnidirectional, measurement frequency 20kHz.
Hydrostatic Pressure:
The transducer should be able to withstand a hydrostatic pressure test of 6MPa.
Measurement data
1.static capacitance
Receiving Sensitivity
f/kHz | Mx/dB |
0.02 | -188.7 |
0.025 | -188.3 |
0.0315 | -189 |
0.04 | -188.3 |
0.063 | -188.7 |
0.08 | -188.5 |
0.1 | -188.5 |
0.125 | -188.7 |
0.16 | -188.5 |
0.2 | -188.6 |
0.25 | -188.3 |
0.315 | -189 |
0.4 | -188.5 |
0.5 | -188.2 |
0.63 | -188.4 |
0.8 | -189.1 |
1 | -189 |
1.25 | -188.5 |
1.6 | -188.2 |
2 | -188.3 |
2.5 | -189 |
3.15 | -188.5 |
4 | -187.6 |
5 | -189.2 |
6.3 | -188.8 |
8 | -189 |
10 | -189.2 |
12.5 | -189.5 |
16 | -190.2 |
20 | -191.4 |
Horizontal Directionality

Vertical Directionality

Hydrostatic Pressure Test:
After undergoing hydrostatic pressure tests at 6MPa/1h, 0MPa/0.25h, and 6MPa/1h, the transducer showed no visible damage or leakage. The insulation resistance between the positive and negative terminals was found to be greater than 10MΩ.
Measurement Results: The transducer meets the technical specifications.
Core Wire Definitions: Yellow – Positive terminal; Blue – Negative terminal