beautypg.com

Measuring method, 65 张秀琴 赵 峥, Piezo ceramic element – BeStar FT-27T-3.0B1 User Manual

Page 4

background image

T

h

is

p

ri

n

t

a

n

d

i

n

fo

rm

a

tio

n

t

he

re

i

n

a

re

p

ro

p

ri

e

ta

ry

t

o

B

e

s

ta

r

E

le

c

tr

o

n

ics

I

ndu

s

tr

y

C

o

.,

L

td.

a

nd

s

h

a

ll

no

t

b

e

u

s

ed

i

n

w

h

o

le

o

r

in

pa

rt

w

ith

ou

t

it

s

w

ri

tt

en

c

on

tent

邱 俊

Drawn by:

DRG NO: BS/TEY01.295B

Page:04 of 06

2

1

3

4

www.be-star.com [email protected]

6

5

张秀琴

赵 峥

A

Piezo Ceramic Element

Checked by:

Approved by:

Note

Date

Drawn

Rev.

A

C

C

11.08.16

FT-27T-3.0B1

Date:

B

B

4.3.Insulation Resistance:

An insulation resistance shall be measured by using an insulation resistance

meter,suach as DF2863 insulation resistance meter.

D

D

4.2.Capacitance:

An electrostatic capacity capacitance shall be measured at 120Hz by using LCR meter, such as DF2812A

LCR numerical bridge or equivalent.the part shall be clamped at the node .

E

E

F

F

4.1.Resonant Frequency/Resonant Impedance

piezoelectric diaphragm shall be clamped at a node point as shown in following figure to be free from any

mechanical stress,and measured its resonant frequency and resonant impedance by using

YW2788 synthesis parameter test apparatus or equivalent

G

G

FT-27T-3.0B1

4.Measuring Method

H

H

2

3

4

6

5

1