标准摘要
[中文适用范围]： IEC 62127-2:2025规定了：- 绝对水听器的校准方法；- 相对（比较）水听器的校准方法。针对该文件所涵盖频率范围内的各种相对和绝对校准方法，提出了建议并引用了相关公认文献。 本文件适用于：- 用于在水中进行测量、工作频率范围为50 kHz至100 MHz的超声频带的水听器；- 采用压电传感元件、旨在测量由超声设备产生的脉冲波和连续波超声场的水听器；- 带或不带水听器前置放大器的水听器。 IEC 62127-2:2025废止并取代了2007年发布的第一版，以及2013年增补1和2017年增补2。本版本为技术性修订版，与前一版本相比，主要包括以下重大技术变更： a) 取消了40 MHz的上限频率规定； b) 水听器灵敏度定义已更新，以将灵敏度视为复数量； c) 在第12.5.1节中更新了方向性响应测量和有效尺寸测定程序，以与IEC 62127-3的最新修订保持一致； d) 附录F已修订，增加了针对高频复数量校准的技术方法； e) 附录K中的互易法描述已扩展，涵盖聚焦换能器。 [外文原描述]： IEC 62127-2:2025 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 document. This document is applicable to - hydrophones used for measurements made in water and in the ultrasonic frequency range 50 kHz to 100 MHz; - hydrophones employing piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment; - hydrophones with or without a hydrophone pre-amplifier. IEC 62127-2:2025 cancels and replaces the first edition published in 2007, Amendment 1:2013 and Amendment 2:2017. 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) directional response measurement and effective size determination procedures have been updated in 12.5.1 to align with recent changes in IEC 62127-3; d) Annex F has been amended to comprise a calibration technique for high-frequency complex-valued calibration; e) the reciprocity method description in Annex K was extended to also comprise focusing transducers.
英文名称Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields