Low Frequency 400Hz-4khz Transducer Projector System Hydrophone Sound Source

Product Description

Low Frequency 400Hz-4khz Transducer Projector System Hydrophone Sound Source


Measurement Details:


4. Measurement Content:

 

4.1. Operating Frequency Band: 400Hz-4kHz;

 

4.2. Source Level:

 

0.3kHz-1kHz: ≥160dB, maximum not less than 180dB; 1kHz-2kHz: ≥170dB, maximum not less than 185dB;

2kHz-4kHz: ≥180dB.

 

4.3. Directivity:

 

Horizontal omnidirectional, vertical opening angle not less than 85° .

 

4.4. Hydrostatic pressure: 1 MPa.

 


5. Measurement data

 

 

5.1. Conductivity and susceptance curves




conductivity and susceptance of  0.3kHz-1kHz transducer

f  (kHz)

G  (mS)

B  (mS)

0.2

0.001365

0.244842

0.25

0.001731

0.30711

0.3

0.003201

0.371585

0.35

0.010393

0.443058

0.4

0.07264

0.48317

0.45

0.01073

0.517227

0.5

0.005647

0.586838

0.55

0.004765

0.650608

0.6

0.004546

0.712513

0.65

0.004541

0.774834

0.7

0.004247

0.835877

0.75

0.005101

0.897051

0.8

0.006449

0.959402

0.85

0.009154

1.023072

0.9

0.022913

1.084589

0.95

0.0184

1.125187

1

0.010702

1.189834

 

conductance and susceptance of 1kHz-2kHz transducer

f  (kHz)

G  (mS)

B  (mS)

1

0.00329

0.354394

1.05

0.004871

0.377257

1.1

0.0078

0.400673

 


 

1.15

0.012376

0.426678

1.2

0.017979

0.452783

1.25

0.032014

0.489779

1.3

0.069381

0.526259

1.35

0.137179

0.538185

1.4

0.189575

0.474929

1.45

0.155521

0.396579

1.5

0.089896

0.400158

1.55

0.071952

0.429648

1.6

0.036367

0.438905

1.65

0.023479

0.475208

1.7

0.018644

0.502537

1.75

0.016507

0.52539

1.8

0.015301

0.547166

1.85

0.014748

0.566947

1.9

0.014085

0.586209

1.95

0.01402

0.604922

2

0.013318

0.622933

 

conductance and susceptance of 2kHz-4kHz transducer

f (kHz)

G (mS)

B (mS)

2

0.049829

2.296373

2.2

0.071553

2.571463

2.4

0.094157

2.859301

2.6

0.138867

3.177868

2.8

0.19941

3.511681

3

0.282528

3.875747

3.2

0.3819

4.280303

3.4

0.554497

4.731402

3.6

0.776904

5.240886

3.8

1.139588

5.833264

4

1.736603

6.539754

5.2. Sound source level

 

sound source lever of 0.3kHz-1kHz transducer

f/kHz

d/m

U /Vpp

U /mVpp

M0/dB

SL/dB

0.3

1

1388

4

-218.2

161.2

0.4

1

1470

40

-218.2

181.2

0.5

1

712

4

-218.2

161.2

0.6

1

1668

4

-218.2

161.2

0.7

1

1558

4

-218.2

161.2

0.8

1

1006

4

-218.2

161.2

0.9

1

406

4

-218.2

161.2

1

1

592

4

-218.2

161.2

 


 

sound source lever of 1kHz-2kHz transducer

f/kHz

d/m

U /Vpp

U /mVpp

M0/dB

SL/dB

1

1

2170

11

-218.3

170.1

1.1

1

1590

11

-218.3

170.1

1.2

1

874

11

-218.3

170.1

1.3

1

482

11

-218.3

170.1

1.4

1

1820

64

-218.3

185.4

1.5

1

386

11

-218.3

170.1

1.6

1

598

11

-218.3

170.1

1.7

1

1004

11

-218.3

170.1

1.8

1

1140

11

-218.3

170.1

1.9

1

1418

11

-218.4

170.2

2

1

1484

11

-218.4

170.2

 

sound source lever of 2kHz-4kHz transducer

f/kHz

d/m

U /Vpp

U /mVpp

M0/dB

SL/dB

2

1

1686

34

-218.5

180.1

2.2

1

1468

34

-218.5

180.1

2.4

1

1236

34

-218.5

180.1

2.6

1

970

34

-218.5

180.1

2.8

1

762

34

-218.5

180.1

3

1

664

34

-218.5

180.1

3.2

1

558

34

-218.5

180.1

3.4

1

486

34

-218.5

180.1

3.6

1

362

34

-218.5

180.1

3.8

1

330

34

-218.5

180.1

4

1

268

34

-218.5

180.1

 


Horizontal directivity



Vertical directivity





Hydrostatic Pressure Test:

After undergoing hydrostatic pressure tests of 1 MPa/1h, 1 MPa/0.25h, 1 MPa/1h, and 0 MPa/0.25h, the transducers showed no abnormalities in appe arance, and the insulation resistance between the transducer core wires was greater than 200 MΩ .


Measurement Results:

All transducers met the technical specifications.


Core Wire Definitions:

 


300Hz-1kHz: Black - Positive; White - Negative

 

1kHz-2kHz: Red - Positive; Green - Negative

 

2kHz-10kHz: Orange - Positive; Blue - Negative











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