BS EN 12595-2000,BS 2000-319 2000 Methods of test for petroleum and its products. Bitumen and bituminous binders. Determination of kinematic viscosity.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12595:2000 BS 2000-
2、319:2000 The European Standard EN 12595:1999 has the status of a British Standard ICS 75.140; 91.100.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Methods of test for petroleum and its products BS 2000-319: Bitumen and bituminous binders Determination of kinematic viscosi
3、ty (Identical with IP 319-2000) Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:56:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Sta
4、ndards Committee and comes into effect on 15 July 2000 Institute of Petroleum and BSI 07-2000 ISBN 0 580 36078 4 BS EN 12595:2000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN 12595:1999. The UK partici
5、pation in its preparation was entrusted to Technical Committee PTI/13, Petroleum testing and terminology, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK
6、 interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. The Institute of Petroleum publishes and sells all parts of BS 2000, and all BS EN petroleum
7、test methods that would be part of BS 2000, both in its annual publication Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts and individually. Further information is available from: The Institute of Petroleum, 61 New Cavendish Street, London
8、W1M 8AR. Tel: 020 7467 7100. Fax: 020 7255 1472. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using
9、 the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity fro
10、m legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct
11、28 09:56:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? ? ? ? ? ?!“#$%?!“#$% for practical use, a submultiple (mm2/s) is more convenient. 3.2 density mass of a liquid divided by its volume NOTE: When reporting density, the unit of density used, together with the temperature, is stated explicitl
12、y, for example kilogram per cubic metre. 3.3 dynamic viscosity ratio between the applied shear stress and the velocity gradient NOTE 1: Dynamic viscosity is a measure of the resistance to flow of a liquid under gravity, and is commonly called the viscosity of the liquid. Licensed Copy: sheffieldun s
13、heffieldun, na, Sat Oct 28 09:56:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? al laboratory uaboratory definitionsnitions purposes of this Eurourposes of this Eur viscisc ? revisio it by amendm amendm to applies.pplies. of test samples. of test samples. of flash and fire plash and fire p se Se Pa
14、ge 4 EN 12595:1999 B?!%($()(?-?(?#?)?*!+?:C? NOTE 2: The SI unit of dynamic viscosity is Pas. 3.4 newtonian liquid liquid having a viscosity that is independent of the rate of shear NOTE: The constant ratio of the shear stress to the velocity gradient is the viscosity of the liquid. If this ratio is
15、 not constant, the liquid is non-newtonian. 4 Principle The time for a fixed volume of the liquid to flow through the capillary of a calibrated glass capillary viscometer under an accurately reproducible head and at a closely controlled temperature is determined. The kinematic viscosity is calculate
16、d by multiplying the efflux time in seconds by the viscometer calibration factor. 5 Apparatus Usual laboratory apparatus and glassware, together with the following. 5.1 Viscometer, Cannon-Fenske, the Zeitfuchs Cross-Arm and BS/IP/RF viscometers, capillary-type, made of borosilicate glass, suitable f
17、or this method are described in Figures A.1, A.2 and A.3, and Tables A.1, A.2 and A.3. Other viscometers are allowed if test results obtained are comparable. Calibrated viscometers are available from commercial suppliers. Details regarding the calibration of viscometers are given in annex C. 5.2 The
18、rmometers, calibrated liquid-in-glass, of an accuracy of 0,2 C can be used or another thermometric device of equal accuracy as described in annex B. The specified thermometers shall be standardized at total immersion that is immersion to the top of the mercury column with the remainder of the stem a
19、nd the expansion chamber at the top of the thermometer exposed to room temperature. NOTE 1: The practice of completely submerging the thermometer is not recommended. When thermometers are completely submerged, corrections for each individual thermometer based on calibration under conditions of compl
20、ete submergence are determined and applied. If the thermometer is completely submerged in the bath during use, the pressure of the gas in the expansion chamber will be higher or lower than during standardization, and can cause a high or low reading on the thermometer. It is essential that liquid-in-
21、glass thermometers be recalibrated periodically and that official corrections be adjusted as necessary to conform to any changes in temperature readings. The thermometer shall be read, estimating the reading to 0,1C. NOTE 2: Thermometers should be checked at regular time intervals. NOTE 3: A commonl
22、y used procedure given in Method ASTM E 77 applies correction which is based on changes in the ice point calibration. Other temperature measuring devices may be used instead of mercury stem thermometers. However, the mercury stem thermometer is the reference device. Therefore any alternative device
23、employed shall be calibrated so as to provide the same readings as would be provided by the mercury stem thermometer, recognizing and allowing for the fact of changed thermal response times compared with the mercury thermometer. NOTE 4: When measuring and controlling nominally constant temperatures
24、as in this test method, alternative devices can indicate greater cyclic variations than mercury thermometers, to an extent depending on the cycle time of heating and the power of the controlled heat input. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:56:29 GMT+00:00 2006, Uncontrolled C
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