Stock Piezo Hemisphere Piezoceramic Bowl for Underwater Communications
Product Description
Stock Piezo Hemisphere Piezoceramic Bowl for Underwater Communications
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:
Material: PZT-51
Dimensions: φ12.7×wall thickness 0.79 hemisphere
Fs(Hz): 161520
Fp(Hz) :192000
Static capacitance Cs: 4930
Acoustic Modem Application:
An acoustic modem is used to transmit data underwater, much as telephone modems are used to transmit data over phone lines. An acoustic modem converts digital data into special underwater sound signals. These signals are then received by a second acoustic modem and converted back into digital data. Acoustic modems can be used for underwater telemetry, ROV and AUV command and control, diver communications, underwater monitoring and data logging, and other applications requiring underwater wireless communications.
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.
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: