ISO INTERNATIONAL STANDARD 4783-1 Second edition 1989-04-15 Industrial wire screens and woven wire cloth Guide to the choice of aperture size and wire diametercombinations Part 1 : Generalities Tamis et tissus metalliques industriels-Guidepourle choix des combinaisons d'ouverture demaille etde diametredu fil- Partie 1: Generalités Reference number ISO 4783-1:1989 (E) ISO 4783-1 : 1989 (E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through ISo technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 4783-1 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods. This second edition cancels and replaces the first edition (ISo 4783-1 : 1981), of which it constitutes a minor revision. ISO 4783 consists of the following parts, under the general title Industrial wire screens and woven wire cloth -- Guide to the choice of aperture size and wire diameter combi- nations: Part 1: Generalities Part2:Preferred combinationsforwoven wire cloth Part 3: Preferred combinations for pre-crimped or pressure-welded wire screens ?ISO1989 All rights reserved. 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 the publisher. International Organization for Standardization Case postale 56.CH-1211Geneve20.Switzerland Printed in Switzerland ISO 4783-1:1989 (E) INTERNATIONALSTANDARD Industrial wire screens and woven wire cloth Guide to the choice of aperture size and wire diameter combinations Part 1 : Generalities 1 Scope Designation 3 This part of ISO 4783 tabulates combinations of aperture sizes Industrial wire screens and woven wire cloth shall be and wire diameters for industrial wire screens and woven wire designated in the following sequence by cloth. It provides thereby a comprehensive range from which preferred groups of combinations may be chosen. a) width of aperture w; The percentage open area A。of each aperture/wire combi- b)( diameter of wire d; nation is stated to assist in assessing a combination for screen- ingpurposes. c) material of wire; ISO 4783-2 gives the preferred combinations for woven wire d) type of weave (see ISo 4783-2) or type of crimp (see cloth, and ISo 4783-3 the preferred combinations for pre- ISO 4783-3). crimped or pressure-welded wire screens. 4 Aperture size and wire diameter 2 Normativereferences combinations The following standards contain provisions which, through reference in this text, constitute provisions of this part of For each width of aperture, table 1 gives a number of ISO 4783. At the time of publication, the editions indicated associated diameters of wire and states the corresponding ap- were valid. All standards are subject to revision, and parties to proximate percentage open area of the wire screen. Selections agreements based on this part of ISo 4783 are encouraged to taken from this list may supply additional data such as mass per investigate the possibility of applying the most recent editions of the standards indicated below.Members of IEC and ISO clause 6). The open area may be calculated, as a