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8kHz-15kHz Transmitting Transducer Cylindrical Underwater Acoustic Transducer

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8kHz-15kHz Transmitting Transducer Cylindrical Underwater Acoustic Transducer


 8kHz-15kHz Cylindrical Underwater Acoustic Transducer Hydrophone




1. Measurement content


1.1. Conductance and capacitance curve

Measuring the conductance and capacitance curve of the transducer, and the resonant frequency should be (12.5±1.5) kHz.


1.2. Transmitting response and sound source level

Measure the response and sound source level of the transducer within 8kHz~15kHz, of which the response at 12kHz is not less than 130dB and the sound source level is not less than 185dB.


1.3. Horizontal directivity

Omnidirectional, measuring frequencies 8kHz, 12kHz, and 15kHz.


1.4. Vertical directivity

Measuring the vertical directivity of the transducer at 8kHz, 12kHz, and 15kHz, of which the vertical opening angle at 12kHz is greater than 50°.


1.5. Hydrostatic pressure: 4.5MPa.


2. Measurement data

2.1 Static Capacitance

8kHz-15kHz transducer 202401#

f/kHz

C/nF

R/Ω

8

28.38

13193

8.5

28.41

9515

9

28.51

7337

9.5

28.44

5537

10

27.98

4261

10.5

27.31

3505

11

26.46

3347

11.5

26.39

3510

12

25.42

2564

12.5

24.12

3043

13

23.78

3761

13.5

23.83

4527

14

23.94

5258

14.5

24.07

5910

15

24.16

6636



Transmitting voltage response (dB)


8kHz-15kHz transducer 202401#

f/kHz

d换/m

U发/Vpp

U收/mVpp

M0/dB

SvL/dB

SL/dB

8

1.23

780

23.06

-217

128.2

177.0

9

1.23

780

38.25

-217.2

132.8

181.6

10

1.23

780

51

-217.3

135.4

184.2

11

1.23

780

54.38

-217.2

135.9

184.7

12

1.23

780

66.56

-217.4

137.8

186.6

13

1.23

780

63.56

-217.7

137.7

186.5

14

1.23

780

52.31

-217.7

136.0

184.8

15

1.23

780

48

-217.5

135.1

183.9


2.3 Horizontal directivity

89f4b59d2d3cb89cac601c8d4a2c608f

81226c207872f3a40978ff3bcf3e809c



ccf97cf4b22248da914c53aa5a9aa502


Vertical directivity

4bd21633112755c2a01146df4437459c

02556e10e149fc89d3e4f4174b2be159

c37a5872cf6f11eaad0ca05227ef7f8f


Hydrostatic pressure test

After the transducer was subjected to 4.5MPa/1h, 0MPa/0.25h, 4.5MPa/1h, 0MPa/0.25h hydrostatic pressure test, the insulation resistance between the positive and negative electrodes of the transducer was greater than 200MΩ.


Measurement results:

After inspection, all transducers met the technical index requirements.


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