標準號：BS EN 62127-1-2007
中文標準名稱：超聲學.水聽器.第1部分:醫療超聲波場頻率小于40MHz的測量和特性
英文標準名稱：Ultrasonics — Hydrophones — Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz
標準類型：C41
發布日期：2008/5/30 12:00:00
實施日期：2008/5/30 12:00:00
中國標準分類號：C41
國際標準分類號：11.040.60;17.140.50
引用標準：IEC 60050-801-1994;IEC 60565;IEC/TR 60854-1986;IEC 61689;IEC 61828;IEC 61846
適用范圍：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.