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IEC 61161:1992 ed1.0

Заменен
Ultrasonics power measurement in liquids in the frequency range 0,5 MHz to 25 MHz — 33 стр.
Specifies a method of determining the total radiated acoustic power of ultrasonic transducters based on the use of a radiation force balance. Provides general principles for the use of radiation force balances in which an obstacle (target) intercepts the sound field to be measured.
ICS
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры