IEC 62127-2:2017
超音波學.水聽器.第2部分:超音波場小于40 MHz的校準

Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz

被代替

標準號

IEC 62127-2:2017

發布

2017年

發布單位

國際電工委員會

替代標準

IEC 62127-2:2007/AMD2:2017

當前最新

IEC 62127-2:2007/AMD2:2017

 

 

引用標準

IEC 60050-801:1994 IEC 60565:2006 IEC 61161:2013 IEC 61689:2013 IEC 61828:2006 IEC 62127-1:2007 IEC 62127-3:2007

適用范圍

This part of IEC 62127 specifies: absolute hydrophone calibration methods; relative (comparative) 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 standard. This standard is applicable to; hydrophones used for measurements made in water and in the ultrasonic frequency range up to 40 MHz; NOTE 1 Although some physiotherapy medical applications of medical ultrasound are developing which operate in the frequency range 40 kHz to 100 kHz, the primary frequency range of diagnostic imaging remains above 2 MHz. It has recently been established that, even in the latter case, the hydrophone response at substantially lower frequencies can influence measurements made of key acoustic parameters [1]; hydrophones employing circular piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment; NOTE 2 Some hydrophones can have non-circular active elements, arising from slight deviations from a circular structure caused, for example by electrode structure, or conversely, the active elements can actually be squares. The clauses within this standard remain valid, although, in these cases, special attention should be paid to the directional response and to the effective radii of the active element through various axes of rotation; hydrophones with or without a hydrophone pre-amplifier.

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