This part of IEC 62127 specifies methods of use of calibrated hydrophones for the
measurement in liquids of acoustic fields generated by ultrasonic medical equipment operating
in the frequency range up to 40 MHz.
The objectives of this standard are:
– to define a group of acoustic parameters that can be measured on a physically sound
basis;
– to define a second group of parameters that can be derived under certain assumptions
from these measurements, and called derived intensity parameters;
– to define a measurement procedure that may be used for the determination of acoustic
pressure parameters;
– to define the conditions under which the measurements of acoustic parameters can be
made in the frequency range up to 40 MHz using calibrated hydrophones;
– to define procedures for correcting, for limitations caused by the use of hydrophones with
finite bandwidth and finite active element size.
NOTE 1 Throughout this standard, SI units are used. In the specification of certain parameters, such as beam
areas and intensities, it may be convenient to use decimal multiples or submultiples. For example beam area may
be specified in cm2 and intensities in W/cm2 or mW/cm2.
NOTE 2 The hydrophone as defined may be of a piezoelectric or an optic type. The introduction however implies
that optical hydrophones are not covered.
CENELEC EN 62127-1-2007 history
2007CENELEC EN 62127-1-2007 Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz