IEC 62127-3:20 22作为IEC 62127-3:20 22 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 62127-3:20 22规定了相关水听器特性。本文件适用于: -采用压电传感器元件的水听器，设计用于测量由超声设备产生的脉冲和连续波超声场； -用于在水中进行测量的水听器； -具有或不具有相关联的前置放大器的水听器。 IEC 62127-3:20 22取消并取代了2007年发布的第一版和修正案1:20 13。本版构成技术修订版。与上一版相比，该版本包括以下重大技术变化。a)取消了40 MHz的频率上限。 b)水听器灵敏度定义已经改变，以将灵敏度识别为复值量。 c)根据附件B中概述的基本原理，改变了确定有效水听器尺寸的程序。 d)对应提供有效水听器尺寸的频率的要求已经改变，以实现增加频带的实用性。 e)增加了新的附件B和附件C。 f)附件A已更新，以反映规范性部分的变化。

IEC 62127-3:2022 is available as IEC 62127-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62127-3:2022 specifies relevant hydrophone characteristics. This document is applicable 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;
- hydrophones with or without an associated pre-amplifier.
IEC 62127-3:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) The upper frequency limit of 40 MHz has been removed.
b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities.
c) Procedures to determine the effective hydrophone size have been changed according to the rationale outlined in Annex B.
d) Requirements on the frequencies for which the effective hydrophone size shall be provided have been changed to achieve practicality for increased frequency bands.
e) The new Annex B and Annex C have been added.
f) Annex A has been updated to reflect the changes of the normative parts.