BeStar FT-27T-4.0B1 - Manual (Page 4)

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 .
4.3.Insulation Resistance:
An insulation resistance shall be measured by using an insulation resistance meter,suach as DF2863
insulation resistance meter.
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
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邱 俊
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Rev. Date Drawn
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Checked by:
Approved by:
Drawn by:
Note 李红元
赵 峥
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Date:
10/05/18
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4.Measuring Method
FT-27T-4.0B1
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