ISO INTERNATIONAL STANDARD 26142 First edition 2010-06-01 Hydrogen detection apparatus Stationary applications Détecteurs d'hydrogene Applications fixes Reference number ISO 26142:2010(E) @ ISO 2010 ISO26142:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT ISO2010 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 [email protected] Web www.iso.org Published in Switzerland ii @ ISo 2010 - All rights reserved ISO 26142:2010(E) Contents Page Foreword. Introduction. .vi 1 Scope, 2 Normative references. 3 Terms and definitions 4 General requirements 4.1 Construction. 4.1.1 4.1.2 4.1.3 Measuring range. 4.1.4 Alarm system. 4.1.5 4.1.6 Adjustments.... 4.1.7 Software-controlled hydrogen detection apparatus. 4.1.8 Reliability. 4.2 Labelling and marking . .8 4.3 Instruction manual 4.4 Vibration..... 5 Performance requirements... 9 Tests .. 6.1 General requirements for tests .. .9 6.1.1 Number of samples ....... 6.1.2 Sequence of tests... .9 6.1.3 Preparation of the hydrogen detection apparatus before testing . 10 6.2 10 6.3 Normai test conditions. 6.3.1 Temperature. 10 6.3.2 Pressure 6.3.3 Humidity 6.3.4 Voltage 10 6.3.5 Orientation 10 6.4 Test methods 11 6.4.1 6.4.2 Standard response test.. 11 6.4.3 Measuring range and calibration... 6.4.4 12 6.4.5 Alarm set point(s). 13 6.4.6 Temperature 13 6.4.7 Pressure 6.4.8 Humidity ... 6.4.9 Vibration 14 6.4.10 Orientation. 15 6.4.11 Flow rate for aspirated apparatus 16 6.4.12 16 6.4.13 Time of response and time of recovery 17 6.4.14 Selectivity..... 6.4.15 Poisoning ... 6.4.16 Operation above the measuring range. 18 6.4.17 Power supply variations ... 18 Iso 2010-All rights reserved ili