BS-EN-ISO-15212-1-1999.pdf
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1、BRITISH STANDARD BS EN ISO 15212-1:1999 Oscillation-type density meters Part 1: Laboratory instruments ICS 17.060 Incorporating corrigendum December 2008 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:01, Uncontrolled Copy, (c) BSI BS EN ISO 15212-1:1999 This British Standard, having be
2、en prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 June 1999 BSI 2009 National foreword This British Standard is the UK implementaion of EN ISO 15212-1:1999. It is identical wit
3、h ISO15212-1:1998, incorporating corrigendum December 2008. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by ISO corrigendum December 2008 is indicated in the text by . The UK participation in its preparation was entrusted by Technic
4、al Committee LBI/36, Laboratory glassware and related apparatus, to Subcommittee LBI/36/4, Density measuring instruments. A list of organizations represented on this subcommittee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of
5、 a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Ma 2009Implementation of ISO corrigendum December 2008 ISBN 978 0 580 67108 1 AC1AC1 y31 Licen
6、sed CopyChinese University of Hong Kong, 13/06/2009 08:01, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15212-1 March 1999 ICS 17.060 English version Oscillation-type density meters Part 1: Laboratory instruments (ISO 15212-1:1998) Densimtres oscillations Parti
7、e 1: Instruments de laboratoire (ISO 15212-1:1998) Dichtemegerte nach dem Schwingerprinzip Teil 1: Laborgerte (ISO 15212-1:1998) This European Standard was approved by CEN on 3 March 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
8、ving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official ver
9、sions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium,
10、 Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat:
11、 rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15212-1:1999 E Licensed CopyChinese University of Hong Kong, 13/06/2009 08:01, Uncontrolled Copy, (c) BSI EN ISO 15212-1:1999 BSI 03-2000
12、 Foreword The text of the International Standard from Technical Committee ISO/TC 48 “Laboratory glassware and related apparatus” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 332 “Laboratory equipment”, the secre
13、tariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 1999, and conflicting national standards shall be withdrawn at the latest by September 1999. According to
14、the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
15、 Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 15212-1:1998 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). i Licensed CopyChi
16、nese University of Hong Kong, 13/06/2009 08:01, Uncontrolled Copy, (c) BSI EN ISO 15212-1:1999 ii BSI 03-2000 Contents Page 1Scope1 2Normative references1 3Definitions1 4Principle and functional units1 4.1Measuring principle1 4.2Functional units1 5Density sensor2 5.1Sensor material2 5.2Sensor design
17、2 6Requirements and tests2 6.1Oscillation system2 6.2Temperature control and measurement3 6.3Displays4 6.4Auxiliary units and data transfer5 6.5Safety requirements5 6.6Electromagnetic compatibility5 7Adjustment5 8Calibration5 8.1Density reference liquids5 8.2Particular density reference liquids6 8.3
18、Calibration requirements6 8.4Calibration procedure6 9Density meter accuracy6 10Manual7 11Marking7 Annex A (normative) Density and compressibility of pure water8 Annex B (normative) Density of moist air12 Annex C (informative) Bibliography14 Annex ZA (normative) Normative references to international
19、publications with their relevant European publicationsInside back cover Figure 1 Functional units of a density meter3 Table 1 Resolution and maximum permissible errors5 Table A.1 Density w of pure water as function of the temperature t90 according to the international temperature scale from 19908 Ta
20、ble A.2 Isothermal compressibility kw of pure water as function of the temperature t90 according to the international temperature scale from 199011 Table B.1 Densities of air at a relative air humidity of 50 % as a function of temperature t90 and air pressure p12 Table B.2 Correction values for the
21、air densities in Table B.1 at different temperatures and air humidities13 Descriptors: laboratory equipment, measuring instruments, densitometers, specifications, metrological characteristics, performance, tests, performance tests, calibration, accuracy, marking. Licensed CopyChinese University of H
22、ong Kong, 13/06/2009 08:01, Uncontrolled Copy, (c) BSI EN ISO 15212-1:1999 BSI 03-20001 1 Scope This part of ISO 15212 specifies metrological and other requirements for oscillation-type density meters which are used in laboratories for all kinds of homogeneous fluid samples. In addition, a method fo
23、r adjustment and calibration of laboratory instruments is given. The instruments are either stand-alone units or part of more complex measuring equipment supplying additional test parameters of the sample. This part of ISO 15212 does not describe the method of use of density meters for particular ap
24、plications or products such as petroleum products or beverages. Such methods of use can be defined by relevant institutions such as ISO or responsible government agencies. This part of ISO 15212 does not define an instrument specification for any particular application. For this information referenc
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