ISO INTERNATIONAL STANDARD 15212-1 First edition 1998-10-01 Oscillation-type density meters - Part 1: Laboratory instruments Densimetres a oscillations - Partie 1: Instruments de laboratoire Reference number ISO 15212-1:1998(E) py IHS under Not for Resale ISO 15212-1:1998(E) Contents Page 1 Scope 2 Normative references .. 3Definitions 2 4 Principle and functional units 4.1 Measuring principle... 4.2 Functional units 5 Density sensor 5.1 Sensor material 5.2 Sensor design 6 Requirements and tests... 6.1 Oscillation system ... 6.2 Temperature control and measurement 6.3 Displays. 6.4 Auxiliary units and data transfer 6.5 Safety requirements 6.6 Electromagnetic compatibility... 7Adjustment 8Calibration .8 8.1 Density reference liquids .... 8.2 Particular density reference liquids 9 8.3 Calibration requirements 8.4 Calibration procedure @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic InternationalOrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 · Switzerland Internet [email protected] Printed in Switzerland Not for Resale ISO 15212-1:1998(E) @ISO 9 Density meter accuracy - .10 10 Manual . .10 11 Marking .. Annex A (normative) Density and compressibility of pure water . .12 Annex B (normative) Density of moist air . Annex C (informative) Bibliography .. 20 Copyright International Organization for Standardization ili y IHS under Not for Resale