IEC 61161:2013 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)
DS/EN 61161:2013 history
2013DS/EN 61161:2013 Ultrasonics - Power measurement - Radiation force balances and performance requirements
2008DS/EN 61161:2008 Ultrasonics - Power measurement - Radiation force balances and performance requirements