This International Standard
? specifies a method of determining the total emitted acoustic power of ultrasonic
transducers based on the use of a radiation force balance;
? establishes general principles for the use of radiation force balances in which an obstacle
(target) intercepts the sound field to be measured;
? establishes limitations of the radiation force method related to cavitation and temperature
rise;
? establishes quantitative limitations of the radiation force method in relation to diverging
and focused beams;
? provides information on assessment of overall measurement uncertainties.
This International Standard is applicable to:
? the measurement of ultrasonic power up to 1 W based on the use of a radiation force
balance in the frequency range from 0,5 MHz to 25 MHz;
? the measurement of ultrasonic power up to 20 W based on the use of a radiation force
balance in the frequency range 0,75 MHz to 5 MHz;
? the measurement of total ultrasonic power of transducers, preferably with well-collimated
beams;
? the use of radiation force balances of the gravimetric type or force feedback type.
NOTE The titles of all publications referred to in this Standard are listed in the Bibliography.
IEC 61161:2006 history
2013IEC 61161:2013 Ultrasonics - Power measurement - Radiation force balances and performance requirements
2006IEC 61161:2006 Ultrasonics - Power measurement - Radiation force balances and performance requirements
1970IEC 61161:1992/AMD1:1998 Amendment 1 - Ultrasonics power measurement in liquids in the frequency range 0,5 MHz to 25 MHz
1998IEC 61161:1998 Ultrasonic power measurement in liquids in the frequency range 0,5 MHz to 25 MHz
1992IEC 61161:1992 Ultrasonic power measurement in liquids in the frequency range 0,5 MHz to 25 MHz