Pzt4 Piezoelectric Hemisphere for Underwater Acoustic Transducer
Product Description
Pzt4 Piezoelectric Ceramic Bowls Piezoelectric Hemisphere for Hydrophone
WuHan Piezohannas Tech.Co .,Ltd is a manufactuer of piezoelectric ceramics ,ultrasonic transducers and some other ultrasonic deivce with strong technology force.With a quality management system and research & development sector,our products are extensively used in most applications.
Dimension of piezo hemisphere:
Radial frequency Fr: 20KHz ± 2KHz
Resonant Impedance R:≤ 5 Ω
Dielectric Loss tg δ: ≤ 0.3%
Static capacitance Cs: 85000pF ± 12.5%
Underwater Acoustic Transducer Application:
A transducer that converts sound signals into electrical signals is used to receive sound signals in water. It is called areceiving transducer, also known as a hydrophone. Hydrophone is widely used in underwater communication, continental exploration, target location, tracking and so on. It is an important component of sonar. Underwater detection, identification, communication, marine environmental monitoring side and marine resources development are inseparable from underwater acoustic transducer.
The underwater acoustic transducer is a device that converts electrical signal into underwater acoustic signal or underwater acoustic signal into electrical signal. Its position in sonar is similar to that of antenna in radio equipment. It is an acoustic device that transmits and receives acoustic waves underwater. The transducer that converts electrical signals into underwater acoustic signals is used to radiate sound waves into water, which is called transmitting transducer. A transducer that converts sound signals into electrical signals is used to receive sound signals in water. It is called a receiving transducer, also known as ahydrophone.Usually, the piezo components used in Hydrophones is piezo tube and spheres, made in soft PZT P-5 series and hard PZTP-4 series.
Some Stanard Size of Hemispherical Piezoelectric Ceramic:
Outer dimension :from 6mm up to 160mm
Wall Thickness: from 1mm up to 10mm
Choice of metallisation (Silver, Nickel, Gold and others on request)
Wide choice of PZT formulations
Electrode direction: electrode plated on the surface inner and outside
Spherical spec |
External dimension（mm） |
Technological parameters |
||||||
diameter |
open caliber
|
Wall thickness |
fkHz
|
Kr
|
P-33
|
P-52
|
P-81
|
|
SΦ5 |
SΦ5 |
Φ1.5 |
0.5 |
320 |
0.4 |
1.8 |
3.5 |
|
SΦ10 |
SΦ10 |
Φ3 |
0.8 |
160 |
0.4 |
4.7 |
8.8 |
|
SΦ15 |
SΦ15 |
Φ4 |
1 |
113 |
0.4 |
9.2 |
17.3 |
|
SΦ20 |
SΦ20 |
Φ5 |
1~1.5 |
77 |
0.4 |
17 |
32.0 |
|
SΦ25 |
SΦ25 |
Φ5 |
1~1.5 |
61 |
0.4 |
17.4 |
32.8 |
|
SΦ30 |
SΦ30 |
Φ6 |
1.5~3 |
50 |
0.4 |
23.5 |
44.3 |
|
SΦ40 |
SΦ40 |
Φ7 |
2~4 |
38 |
0.4 |
34.3 |
64.6 |
|
SΦ50 |
SΦ50 |
Φ8 |
2~4 |
30 |
0.4 |
54.8 |
103.2 |
|
SR12.5 |
SR12.5 |
Φ3.5 |
2~5 |
83 |
6.2 |
3.7 |
||
SR25 |
SR25 |
Φ8 |
2~5 |
26.2 |
15.6 |
|||
SR37.5 |
SR37.5 |
Φ10 |
2~5 |
17.7 |
||||
SR50 |
SR50 |
Φ12 |
3~6 |
25.5 |
||||
Size(mm) |
Main Specifications |
||||||
Diameter |
Aperture Diameter |
Wall Thickness |
fr(MHz) |
Kr |
C(nf) |
||
P-33 |
P-52 |
P-81 |
|||||
5 |
1.5 |
0.5 |
320 |
0.4 |
1.8 |
3.5 |
|
10 |
3 |
0.8 |
160 |
0.4 |
4.7 |
8.8 |
|
15 |
4 |
1 |
113 |
0.4 |
9.2 |
17.3 |
|
20 |
5 |
1～1.5 |
77 |
0.4 |
17.0 |
32.0 |
|
25 |
5 |
1～1.5 |
61 |
0.4 |
17.4 |
32.8 |
|
30 |
6 |
1.5～3 |
50 |
0.4 |
23.5 |
44.3 |
|
40 |
7 |
2～4 |
38 |
0.4 |
34.3 |
64.6 |
|
50 |
8 |
2～4 |
30 |
0.4 |
54.8 |
103.2 |
|
12.5 |
3.5 |
2～5 |
83 |
6.2 |
3.7 |
||
25 |
8 |
2～5 |
26.2 |
15.6 |
|||
37.5 |
10 |
2～5 |
17.7 |
||||
50 |
12 |
3～6 |
25.5 |
||||
emisphere
Hemisphere material |
External dimension（mm） |
Technological parameters |
||||
OD. |
Wall thickness |
OD of Hole |
c |
fs |
kp |
|
nF |
kHz |
% |
||||
P-51 |
S10 |
0.7 |
1.5 |
3.8 |
245 |
>50 |
P-51 |
S10 |
0.7 |
/ |
3.8 |
210 |
>50 |
P-51 |
S20 |
0.9 |
4 |
13 |
90 |
>50 |
P-51 |
S20 |
0.9 |
/ |
13.5 |
100 |
>50 |
P-51 |
S30 |
1.1 |
4 |
258 |
64 |
>50 |
P-51 |
S30 |
1.1 |
/ |
26 |
67 |
>50 |
PZT Material:
- PZT4 Piezoelectric ceramics have a double behavior of receiving and transmitting, with higher sensitivity and lower dielectric loss.
- PZT5 Piezoelectric ceramics have higher electro-mechanical coupling coefficient, the moderate dielectric constant and higher sensitivity.
- PZT8 Piezoelectric ceramics of high power transmission type have good piezoelectric property, high mechanical strength, high coercive field, low dielectric loss in strong fields.
Application Image: