• I.S. EN 61102:1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    MEASUREMENT AND CHARACTERISATION OF ULTRASONIC FIELDS USING HYDROPHONES IN THE FREQUENCY RANGE 0.5 MHZ TO 15 MHZ

    Available format(s):  Hardcopy, PDF

    Superseded date:  07-01-2010

    Language(s):  English

    Published date:  01-01-1994

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Definitions
    4 List of symbols
    5 Measurement requirements
      5.1 Requirements for hydrophones and amplifiers
          5.1.1 General
          5.1.2 Sensitivity of a hydrophone
          5.1.3 Directional response of a hydrophone
          5.1.4 Effective radius of a hydrophone active element
          5.1.5 Choice of the size of a hydrophone active element
          5.1.6 Bandwidth
          5.1.7 Linearity
          5.1.8 Hydrophone signal amplifier
      5.2 Requirements for positioning systems and water
          baths
          5.2.1 Positioning systems
          5.2.2 Water bath
      5.3 Requirements for measurement systems
      5.4 Recommendations for ultrasonic equipment being
          characterized
    6 Specification of performance for hydrophones and
      amplifiers
      6.1 Sensitivity
      6.2 Effective radius
      6.3 Hydrophone linearity
      6.4 Hydrophone amplifiers
    7 Measurement procedures
      7.1 Preparation and alignment
          7.1.1 Preparation
          7.1.2 Aligning a hydrophone
          7.1.3 Aligning an ultrasonic transducer and hydrophone
    8 Beam characterisation
      8.1 Primary pressure parameters
          8.1.1 Peak-positive and peak-negative acoustic pressure
          8.1.2 Pulse acoustic pressure
          8.1.3 Spatial-peak pulse acoustic pressure
          8.1.4 Spatial-peak r.m.s. acoustic pressure
          8.1.5 Beam-average pulse acoustic pressure
          8.1.6 Beam-average r.m.s. acoustic pressure
          8.1.7 Spatial-average pulse acoustic pressure
          8.1.8 Spatial-average r.m.s. acoustic pressure
          8.1.9 Nonlinear propagation parameter
      8.2 Derived intensity parameters
      8.3 Derived pulse-intensity integral parameters
    9 Acoustic output specification and labelling
    Annexes
    A (informative)
      A.1 Hydrophones
          A.1.1 Electrical loading considerations
          A.1.2 Hydrophone signal amplifier
          A.1.3 Alignment of hydrophones
          A.1.4 Types of hydrophone
                A.1.4.1 Ceramic probe hydrophones
                A.1.4.2 PVDF probe hydrophones
                A.1.4.3 PVDF membrane hydrophones
                A.1.4.4 Relative performance of different types
          A.1.5 Typical specification data for hydrophones
    B (informative)
      B.1 Acoustic pressure and intensity
    C (informative)
      C.1 Transducer and hydrophone positioning systems
    D (informative) Rationale
    Annex ZA (normative) Other International Publications quoted in
                         this standard with the references of the
                         relevant European Publications
    Bibliography
    Figures

    Abstract - (Show below) - (Hide below)

    Defines the methods of use of calibrated piezoelectric hydrophones for the measurement in liquids of acoustic fields generated by ultrasonic medical equipment operating in the frequency range 0,5 MHz to 15 MHz.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC TR 60854:1986 Methods of measuring the performance of ultrasonic pulse-echo diagnostic equipment
    IEC 60469-1:1987 Pulse techniques and apparatus. Part 1: Pulse terms and definitions
    IEC 60050-801:1994 International Electrotechnical Vocabulary (IEV) - Part 801: Acoustics and electroacoustics
    IEC 60866:1987 Characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz
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