超声波 水听器 第3部分：超声场水听器的特性

[中文适用范围]： IEC 62127-3:2022 RLV 包含官方 IEC 国际标准及其红线版本。 Redline 版本仅提供英文版本，为您提供了一种快速、简单的方法来比较官方 IEC 标准与其先前版本之间的所有更改。 IEC 62127-3:2022 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，设计用于测量超声波设备产生的脉冲和连续波超声波场； - 用于水中测量的水听器； - 带或不带相关前置放大器的水听器。 IEC 62127-3:2022 取消并取代了 2007 年发布的第一版和修正案 1:2013。此版本构成技术修订。相对于先前版本，此版本包括以下重大技术更改。 a) 40 MHz 的频率上限已被取消。 b) 水听器灵敏度定义已更改，将灵敏度识别为复值量。 c) 确定有效水听器尺寸的程序已根据附件 B 中概述的原理进行了更改。 d) 对应提供有效水听器尺寸的频率的要求已更改，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) 附录 A 已更新，以反映规范部分的变化。 [外文原描述]： IEC 62127-3:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its 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.