ISO INTERNATIONAL STANDARD 16831 First edition 2012-04-01 Non-destructive testing Ultrasonic testing Characterization and verification of ultrasonic thickness measuring equipment Essais non destructifs - Controle par ultrasons - Caracterisation et verification des appareils de mesure de I'épaisseur par ultrasons Reference number ISO 16831:2012(E) @ ISO 2012 py IHS under Not for Resale ISO 16831:2012(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or Iso's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ ISO 2012 - All rights reserved py IHS unde itted without license from IHS Not for Resale ISO 16831:2012(E) Contents Page Foreword Introduction .. vi 1 Scope .. 2 Normative references... 3 Terms and definitions .. 4 General requirements for compliance... 5 Manufacturer's technical specification for ultrasonic thickness measuring equipment. 5.1 General 5.2 5.3 Display 5.4 Transmitter.. 5.5 Receiver....... 5.6 Other information . 6 Calibration blocks . 6.1 General 6.2 Material 6.3 Shape and size... 7 Performance requirements for ultrasonic thickness measuring equipment . 8 Probes... 9 Group 1 tests . 9.1 General ... 9.2 Equipment required for Group 1 tests ... 9.3 Stability against temperature .... 9.4 Low battery warning.... 9.5 Battery operational time 9.6 Operational voltage range .. 9.7 Operational current range ... 9.8 Operational temperature range .... 9.9 Pulse repetition frequency, PRF ... 9.10 Transmitter pulse shape, rise-time and peak voltage ... 9.11 11 9.12 Minimum and maximum measurable thicknesses... 9.13 Accuracy and resolution.... 9.14 Range of velocity setting (calibration) .. 9.15 Calibration mechanisms..... 9.16 Calibration setting storage ... 12 9.17 Data storage.... 12 9.18 9.19 Display and recall 13 9.20 Display response time .. 13 10 Group 2 tests 10.1 General. .13 10.2 Equipment required for Group 2 tests ..... .13 10.3 General characteristics.... 10.4 General mechanical state and external aspects 14 11 14 11.1 .14 11.2 General mechanical state and external aspects ..... 11.3 Calibration mechanisms.......... 14 CopyrghtInternational OrganizaionStandardizaoghtsreserved ili ted without licensefrom IHS Not for Resale