IEC 62127-2:2017
超音波学.水听器.第2部分:超音波场小于40 MHz的校准

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

被代替

标准号

IEC 62127-2:2017

发布

2017年

发布单位

国际电工委员会

替代标准

IEC 62127-2:2007/AMD2:2017

当前最新

IEC 62127-2:2007/AMD2:2017

 

 

引用标准

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

适用范围

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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