BS EN 62127-1-2007 超声学.水听器.第1部分:医疗超声波场频率小于40MHz的测量和特性

标准号：BS EN 62127-1-2007
中文标准名称：超声学.水听器.第1部分:医疗超声波场频率小于40MHz的测量和特性
英文标准名称：Ultrasonics — Hydrophones — Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz
标准类型：C41
发布日期：2008/5/30 12:00:00
实施日期：2008/5/30 12:00:00
中国标准分类号：C41
国际标准分类号：11.040.60;17.140.50
引用标准：IEC 60050-801-1994;IEC 60565;IEC/TR 60854-1986;IEC 61689;IEC 61828;IEC 61846
适用范围：This part of IEC 62127 specifies methods of use of calibrated hydrophones for themeasurement in liquids of acoustic fields generated by ultrasonic medical equipment operatingin the frequency range up to 40 MHz.The objectives of this standard are:– to define a group of acoustic parameters that can be measured on a physically soundbasis;– to define a second group of parameters that can be derived under certain assumptionsfrom these measurements, and called derived intensity parameters;– to define a measurement procedure that may be used for the determination of acousticpressure parameters;– to define the conditions under which the measurements of acoustic parameters can bemade in the frequency range up to 40 MHz using calibrated hydrophones;– to define procedures for correcting, for limitations caused by the use of hydrophones withfinite bandwidth and finite active element size.NOTE 1 Throughout this standard, SI units are used. In the specification of certain parameters, such as beamareas and intensities, it may be convenient to use decimal multiples or submultiples. For example beam area maybe specified in cm2 and intensities in W/cm2 or mW/cm2.NOTE 2 The hydrophone as defined may be of a piezoelectric or an optic type. The introduction however impliesthat optical hydrophones are not covered.