Abstract
Applies to
- hydrophones employing piezoelectric sensor elements, designed to measure the pulsed and continuous-wave ultrasonic fields generated by ultrasonic equipment;
- hydrophones used for measurements made in water and in the frequency range between 15 MHz and 40 MHz;
- hydrophones with or without an integral amplifier;
- hydrophones with a circular piezoelectrically active element.
Specifies
- relevant hydrophone characteristics;
- methods of determining directional response and hydrophone sensitivity based on relative or comparative measurements;
and describes
- absolute hydrophone calibration methods.
Recommendations and references to accepted literature are made for the various relative and absolute calibration methods in the frequency range covered by this International Standard.
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