Essais non destructifs- Caracterisation et verification de l'appareillage de controle par ultrasons - Partie 1: Appareils
Zerstörungstreie Prüfung - Charakterisierung und Verifiziering der Ultraschall-Prüfausrüstung - Teil 1: Prüfgeräte.
This draft European Standard is submitted to CEN members for CEN formal vote. It has been drawn up by the Technical Committee CEN/TC 138.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and noticed to the Central Secretariat has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

Central Secretariat: rue de Stassart 36, B-1050 Bruxelles 1998 Copyright reserved to all CEN members Ref. No prEN 12668-1:1998 E

CONTENTS

Foreword Introduction Scope Normative references Definitions related Symbols General requirements for compliance Manufacturer's technical specification for ultrasonic instruments   General   General attributes   Transmitter related   Amplifier and attenuator related   Digital ultrasonic instruments Performance requirements for ultrasonic instruments Group 1 tests Equipment required for Group 1 tests   Stability against temperature   Transmitter pulse parameters   Receiver   Monitor gate   Monitor gates with proportional outputs   Digital ultrasonic instruments Group 2 tests Equipment required for group 2 tests   Physical state and external aspects   Stability   Transmitter pulse parameters   Receiver   Linearily of timebase Annex A (normative) Special conditions for flaw detectors with logarithmic amplifiers

Foreword

This draft European Standard was prepared by the Technical Committee CEN/TC 138 "Non-destructive testing" of which the secretariat is held by AFNOR.

This document is currently submitted to the formal vote.

This standard consists of the following parts:

EN 12668-1, Non-destructive testing and verification of ultrasonic examination equipment - Part 1: Instruments

EN 12668-2, Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 2: Probes

EN 12668-3, Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment

In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard:

Introduction

This standard consists of three parts.

Part one of this standard gives methods and acceptance criteria for verifying the electronic performance of ultrasonic instruments, with A-scan displays, employed for manual ultrasonic non-destructive examination. A specific group of these methods and acceptance criteria shall be used at least once every twelve months to verify the fitness for purpose of an ultrasonic instrument during it's lifetime.

Part two of this standard gives methods and acceptance criteria, used by the manufacturer to verify the fitness for purpose of ultrasonic probes. There is no requirement for probes to be subject to periodic checking using these methods. Part 3 of this standard gives the methods and acceptance criteria that shall be used to verify the fitness for purpose of a probe during it's lifetime.

Part three of this standard gives methods and acceptance criteria for a complete system, with the probe, cable and ultrasonic instrument combined. Initially these shall be used to verify the compatibility of a probe, cable and ultrasonic instrument and to characterise the system's overall performance. On site these methods and acceptance criteria shall be used to routinely check the probe, cable and ultrasonic instrument during their lifetime.

1 Scope

This standard specifies methods and acceptance criteria for assessing the electrical performance of analog and digital ultrasonic instruments for pulse operation using A-scan display, employed for manual ultrasonic non-destructive examination with single or twin transducer probes operating within the centre frequency range 0,5 MHz to 15 MHz. Ultrasonic instruments for continuous waves are not included in this standard. This standard may partly be applicable to ultrasonic instruments in automatic systems but then other tests can be needed to ensure satisfactory performance.

2 Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications.. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.

prEN 1330-4	Non-destructive testing - Terminology - Part 4: Terms used in ultrasonic testing
prEN 12223	Non-destructive testing - Ultrasonic examination - Specification for calibration block No. 1
prEN 12668-3	Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment
EN ISO9001	Quality systems - Model for quality assurance in design/development, production, installation and servicing
EN ISO 9002	Quality systems - Model for quality assurance in production and installation
ISO 10012-1	Quality assurance requirements for measuring equipment - Part 1: Metrological confirmation system for measuring equipment

• List of other DIN EN standards
  
• NDTnet 1998 April, Vol.3 No.5: NDTnet issue focus on Ultrasonic Flaw Detectors
• DIN - Deutsches Institut für Normung e.V. Berlin
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