IEC TR 61088:1991

FOREWORD
Clause
1 Scope
2 Normative references
3 Definitions
   3.1 Input electrical power
   3.2 Output acoustical power
   3.3 Vibrational displacement amplitude
   3.4 Frequency of resonance
   3.5 Bandwidth
   3.6 Electrical impedance of the transducer
   3.7 Electrical admittance of the transducer
   3.8 Sensitivity of the transducer
   3.9 Electro-acoustical efficiency
4 Classification of transducers
   4.1 Transducers of category P
   4.2 Transducers of category A
5 Measurement conditions
   5.1 General
   5.2 Preparation for measurement
   5.3 Operating conditions
   5.4 General requirements for the instrumentation
6 Measurement of electrical quantities
   6.1 Measurement of voltage at the input of the
        transducer
   6.2 Measurement of electrical current at the input
        of the transducer
   6.3 Measurement of the current-voltage phase shift
        at the input of the transducer
   6.4 Measurement of the input electrical power
   6.5 Measurement of electrical impedance (admittance)
        of the transducer
7 Measurement of vibrational displacement amplitude
8 Transducer characteristics and measurement methods
   8.1 Resonance frequency and input electrical power
        of the transducer at resonance
   8.2 Bandwidth and quality factor
   8.3 Vibrational displacement amplitude at resonance
   8.4 "Displacement-voltage" sensitivity of the
        transducer
   8.5 Output acoustical power of the transducer
   8.6 Electro-acoustical efficiency of the transducer
   8.7 "Squared displacement-power" sensitivity of the
        transducer
   8.8 Electrical impedance at resonance
   8.9 Electrical admittance of the clamped transducer
ANNEXES
A Non-linear properties of the transducer
B Dependence of the load impedance on the vibrational
   displacement amplitude
C Bibliography

Specifies the essential electroacoustic characteristics of piezoceramic transducers for industrial application of ultrasonic energy. It also specifies the methods of measuring these characteristics.