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IEC 61161

3rd Edition, January 1, 2013

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Ultrasonics – Power measurement – Radiation force balances and performance requirements



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Product Details:

  • Revision: 3rd Edition, January 1, 2013
  • Published Date: January 2013
  • Status: Active, Most Current
  • Document Language: English, French
  • Published By: International Electrotechnical Commission (IEC)
  • Page Count: 104
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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 estimating the acoustic power for diverging and focused beams using the radiation force method;

• 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 in well-collimated, diverging and focused ultrasonic fields;

• the use of radiation force balances of the gravimetric type or force feedback type.

(See also Clause A.1)

NOTE 1 A focused beam is converging in the pre-focal range and diverging beyond focus.

NOTE 2 Ultrasonic power measurement in the high intensity therapeutic ultrasound (HITU) range, i.e. beyond 1 W or 20 W, respectively, is dealt with in the future IEC 62555.