10kHz-14kHz Cylindrical Underwater Acoustic Transducer Hydrophone for Sonar

1.Measurement conditions

 

Measurement basis:

GB/T 7965-2002 "Acoustic Underwater Acoustic Transducer Measurement".

2.Measurement content:

 

2.1 Conductance and capacitance curves

 

Measuring the conductance and capacitance curves of the transducer within the frequency range of 1kHz-20kHz.

 

2.2. Sending voltage response

Measuring the transducer's sending voltage response, the response in the 10kHz ~ 14kHz frequency band is not less than 140dB, and the fluctuation is not more than 3dB.

 

2.3. Receiving sensitivity

Measure the receiving sensitivity of the transducer, and it shall not be less than -190dB in the frequency band of 10kHz～14kHz.

 

2.4. Horizontal directivity

Horizontal omnidirectional, measuring frequency points 10kHz, 12kHz, 14kHz.

 

2.5. Vertical directivity

Provide vertical directivity measurement data, measurement frequency points 10kHz, 12kHz, 14kHz.

 

2.6. Hydrostatic pressure: 20MPa.

 

3. Measurement data

There is 1 transducer in total. After the transducer is subjected to 20MPa/0.25h, 0MPa/0.25h, 20MPa/0.25h, 0MPa/0.25h hydrostatic pressure test, the insulation resistance between the core wires of the transducer is 500MΩ, and the core wire and the shell The insulation resistance between them is greater than 500MΩ. The acoustic performance was measured after the hydrostatic test as follows.

 

1. 

3.1 Conductance and capacitance curves

3.2 Sending voltage response and sound source level

 

 

3.3 Receiving Sensitivity

3.4 Horizontal directivity

3.5 Vertical directivity

Measurement results :

The transducer has been tested to meet the technical specification requirements.