This International Standard
- establishes general principles relevant to HITU fields for the
use of radiation force balances in which an obstacle (target)
intercepts the sound field to be measured;
- specifies a calorimetric method of determining the total
emitted acoustic power of ultrasonic transducers based on the
measurement of thermal expansion of a fluid-filled target;
- specifies requirements related to the statement of electrical
power characteristics of ultrasonic transducers;
- provides guidance related to the avoidance of acoustic
cavitation during measurement;
- provides guidance related to the measurement of HITU
transducers of different construction and geometry, including
collimated, diverging and convergent transducers, and multi-element
transducers;
- provides guidance on the choice of the most appropriate
measurement method;
- provides information on assessment of overall measurement
uncertainties.
This International Standard is applicable to the measurement of
ultrasonic power generated by HITU equipment up to 500 W in the
frequency range from 0,5 MHz to 5 MHz. HITU equipment may generate
convergent, collimated or divergent fields.
For frequencies less than 500 kHz, no validations exist and the
user should assess the uncertainties of the power measurement and
measurement system at the frequencies of operation.
This International Standard does not apply to:
- ultrasound equipment used for physiotherapy, for lithotripsy
for general pain relief.
| Edition : | 14 |
| File Size : | 1
file
, 1.8 MB |
| Number of Pages : | 62 |
| Published : | 08/01/2014 |
