标准摘要
[中文适用范围]: IEC 62127 本部分规定: • 绝对水听器校准方法; • 相对(比较)水听器校准方法。针对本标准涵盖的频率范围内的各种相对和绝对校准方法,提出了对公认文献的建议和参考。本标准适用于 • 用于水中测量且超声波频率范围高达 40 MHz 的水听器。注 1:虽然医学超声的一些物理治疗医学应用正在开发,其工作频率范围为 40 kHz 至 100 kHz,但诊断成像的主要频率范围仍然高于 2 MHz。最近已经确定,即使在后一种情况下,低得多频率下的水听器响应也会影响关键声学参数的测量[1]。 • 采用圆形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波和连续波超声波场;注 2:一些水听器可以具有非圆形有源元件,这是由于例如电极结构引起的与圆形结构的轻微偏差而产生的,或者相反,有源元件实际上可以是正方形。本标准中的条款仍然有效,但在这些情况下,应特别注意方向响应和活动元件通过各个旋转轴的有效半径。 • 带或不带水听器前置放大器的水听器。 [外文原描述]: IEC 62127-2:2007 specifies absolute hydrophone calibration methods and relative (comparative) hydrophone calibration methods. This standard is applicable to: - hydrophones used for measurements made in water and in the ultrasonic frequency range up to 40 MHz; - hydrophones employing circular piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment; - and hydrophones with or without a hydrophone pre-amplifier. IEC 62127-1, IEC 62127-2 and IEC 62127-3 are being published simultaneously. Together these cancel and replace IEC 60866:1987, IEC 61101:1991, IEC 61102:1991, IEC 61220:1993 and IEC 62092:2001. The contents of the corrigendum of August 2008 have been included in this copy. The French version of this standard has not been voted upon.
英文名称Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz