1、June 2011 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 87
2、.040!$s)b“1800663www.din.deDDIN EN ISO 2811-3Paints and varnishes Determination of density Part 3: Oscillation method (ISO 2811-3:2011)English translation of DIN EN ISO 2811-3:2011-06Beschichtungsstoffe Bestimmung der Dichte Teil 3: Schwingungsverfahren (ISO 2811-3:2011)Englische bersetzung von DIN
3、EN ISO 2811-3:2011-06Peintures et vernis Dtermination de la masse volumique Partie 3: Mthode par oscillation (ISO 2811-3:2011)Traduction anglaise de DIN EN ISO 2811-3:2011-06SupersedesDIN EN ISO 2811-3:2002-02www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be
4、 considered authoritative.05.11 15DIN EN ISO 2811-3:2011-06 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Ki
5、ngdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committ
6、ee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 2811 consists of the following parts, under the general title Paints and varnishes Determination of density: Part 1: Pyknometer method Part 2: Immersed body (plummet) method Part 3: Oscillation method Pa
7、rt 4: Pressure cup method The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1513 DIN EN ISO 1513 ISO 3696 DIN ISO 3696 ISO 15528 DIN EN ISO 15528 Re 5 Temperature Examples of relevant German regulations are the Eichordnung (Verification O
8、rdinance) and the Fertigpackungsverordnung (Prepackages Ordinance). Amendments This standard differs from DIN EN ISO 2811-3:2002-02 as follows: a) the unit for the density has been changed from grams per millilitre to grams per cubic centimetre, as this is the more common SI unit; b) the determinati
9、on in duplicate has been changed to a single determination; c) the precision data ha been corrected; ved) the normative references have been updated. Previous editions DIN 53217-1: 1981-01, 1991-03 DIN 53217-5: 1991-03 DIN EN ISO 2811-3: 2002-02 2 DIN EN ISO 2811-3:2011-06 National Annex NA (informa
10、tive) Bibliography DIN EN ISO 1513, Paints and varnishes Examination and preparation of test samples DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN ISO 3696, Water for analytical laboratory use Specification and test methods 3 DIN EN ISO 2811-3:2011-06 4
11、This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2811-3 March 2011 ICS 87.040 Supersedes EN ISO 2811-3:2001English Version Paints and varnishes - Determination of density - Part 3: Oscillation method (ISO 2811-3:2011) Peintures et vernis - Dtermination de la
12、masse volumique -Partie 3: Mthode par oscillation (ISO 2811-3:2011) Beschichtungsstoffe - Bestimmung der Dichte - Teil 3: Schwingungsverfahren (ISO 2811-3:2011) This European Standard was approved by CEN on 19 February 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations w
13、hich stipulate the conditions for giving 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 CEN-CENELEC Management Centre or to any CEN member. This
14、European Standard exists in three official versions (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 CEN-CENELEC Management Centre has the same status as the official versions. CEN member
15、s are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, S
16、weden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Member
17、s. Ref. No. EN ISO 2811-3:2011: EForeword 3Contents Page 1 Scope 2 Normative references 3 Terms and definitions . 4 Principle . 5 Temperature. 6 Apparatus. 7 Sampling 8 Procedure. 8.1 General . 8.2 Determination 9 Calculation . 10 Precision 10.1 General . 10.2 Repeatability limit, r 10.3 Reproducibi
18、lity limit, R 11 Test report Annex A (normative) Calibration of the apparatus Determination of the apparatus constants Annex B (informative) Density values for damp air, air-free water and tetrachloroethylene Annex C (informative) Calculation of density at the reference temperature from measurements
19、 at other temperatures 44445555556666668911EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 2Foreword This document (EN ISO 2811-3:2011) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretari
20、at 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 2011, and conflicting national standards shall be withdrawn at the latest by September 2011. Attention is draw
21、n to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2811-3:2001. According to the CEN/CENELEC Internal Regulations, the nat
22、ional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands
23、, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 2811-3:2011 has been approved by CEN as a EN ISO 2811-3:2011 without any modification. EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 31 Scope This part of
24、 ISO 2811 specifies a method for determining the density of paints, varnishes and related products using an oscillator. The method is suitable for all materials, including paste-like coatings. If a pressure-resistant type of apparatus is used, the method is also applicable to aerosols. 2 Normative r
25、eferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1513, Paints and varnishes Examinat
26、ion and preparation of test samples ISO 3696, Water for analytical laboratory use Specification and test methods ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1
27、density mass divided by the volume of a portion of a material NOTE This is expressed in grams per cubic centimetre. 4 Principle A glass or stainless-steel U-tube is filled with the product under test. The tube is clamped at both ends and then subjected to oscillation. The resonance frequency of the
28、filled tube varies with the mass contained in the tube, i.e. the density of the product under test. EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 45 Temperature The effect of temperature on density is highly significant with respect to filling properties, and varies with the type of product. Carr
29、y out the test at (23,0 0,5) C. NOTE For some purposes a different temperature, for example (20,0 0,5) C, might be needed. The test sample, tube and oscillator shall be conditioned to the specified or agreed temperature, and it shall be ensured that the temperature variation does not exceed 0,5 C du
30、ring testing. 6 Apparatus Ordinary laboratory apparatus and glassware, together with the following. 6.1 Oscillator, consisting of a glass or stainless-steel U-tube and apparatus to cause the U-tube to oscillate. One model displays the resonance frequency; another calculates and displays the density.
31、 6.2 Thermometer, accurate to 0,2 C and graduated at intervals of 0,2 C or finer. 6.3 Temperature-controlled chamber, capable of maintaining the oscillator and test sample at the specified or agreed temperature (see Clause 5). 6.4 Disposable plastic syringe, of sufficient capacity to fill the U-tube
32、. 7 Sampling Take a representative sample of the product under test, as described in ISO 15528. Examine and prepare the sample as described in ISO 1513. 8 Procedure 8.1 General Carry out a single determination on a fresh test sample. 8.2 Determination Ensure that the apparatus is clean, both by insp
33、ection and by checking that the display indicates the density of air (or the corresponding period of oscillation at resonance). Fill the U-tube with the product under test (about 2 cm3) in accordance with the oscillator manufacturers instructions (i.e. until the level is above the upper of the two c
34、lamps holding the U-tube). Avoid introducing air bubbles, which cause unsteady readings. NOTE The presence of non-visible air bubbles becomes apparent due to the fact that the measured values vary considerably. Close the upper filler-hole. Using the thermometer (6.2), check that the temperature of t
35、he temperature-controlled chamber is within the specified limits. Start up and operate the oscillator in accordance with the manufacturers instructions. EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 5If using an apparatus which displays the period of oscillation at resonance, take at least three
36、readings of the period of oscillation, T, and at least two of the temperature. The values of T shall not differ by more than 0,000 1 ms. If they do, make three more measurements. If using an apparatus which displays the density directly, take at least three readings of the density and at least two o
37、f the temperature. The density values shall not differ by more than 0,000 2 g/cm3. If they do, make three more measurements. After the measurements, clean the apparatus in accordance with the manufacturers instructions. It is essential to leave it clean and dry, and to check that the display indicat
38、es the density of air (or the corresponding period of oscillation). 9 Calculation If the period of oscillation, T, has been read, calculate the density, , using Equation (1): ()21BAT = (1) where A and B are two apparatus constants (see Annex A). If the temperature used is not the reference temperatu
39、re, the density can be calculated using Equation (C.1). 10 Precision 10.1 General The precision of the method depends on the characteristics of the product to be tested. For materials which contain no entrapped air, the values in 10.2 and 10.3 are valid. 10.2 Repeatability limit, r The value below w
40、hich the absolute difference between two single test results, obtained on identical material by one operator in one laboratory using the same equipment within a short interval of time using the standardized test method, may be expected to lie, with a 95 % probability, is 0,001 g/cm3. 10.3 Reproducib
41、ility limit, R The value below which the absolute difference between two test results, obtained on identical material by operators in different laboratories using the standardized test method, may be expected to lie, with a 95 % probability, is 0,002 g/cm3. 11 Test report The test report shall inclu
42、de at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of ISO 2811, i.e. ISO 2811-3:2011; c) the type (model) of apparatus used; d) the test temperature; EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 6e) the density measurement
43、determined in accordance with 8.2, or the density calculated in accordance with Clause 9, in grams per cubic centimetre, rounded to the nearest 0,001 g/cm3; f) any deviation from the test method specified; g) any unusual features (anomalies) observed during the test; h) the date of the test. EN ISO
44、2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 7Annex A (normative) Calibration of the apparatus Determination of the apparatus constants A.1 General If using an apparatus which displays the period of oscillation at resonance, the apparatus constants need to be determined for use in Equation (A.1). If us
45、ing an apparatus which displays the density directly, the constants are entered into the memory of the data-processing unit of the apparatus. The apparatus constants have to be determined and regularly checked by the user. They are usually obtained by measurements in air and in distilled or deionize
46、d water of at least grade 2 purity, as defined in ISO 3696. A.2 Procedure Make several measurements with air and water over a period of several minutes in each case, as described in 8.2. If the values obtained are not constant, repeat the measurements. The apparatus constants are valid only at tempe
47、ratures which do not differ from the temperature, tT, at which they were determined by more than 0,5 C. For other test temperatures, the constants shall be determined again. The apparatus constants shall be determined at the beginning of each series of measurements and checked at the end. NOTE Diffe
48、rences can occur in the period of oscillation due to the presence of impurities. A.3 Calculation of apparatus constants Calculate the mean values of the period of oscillation for water, TW, and for air, TA. Use these mean values to calculate the two apparatus constants, A and B, as given by Equation
49、 (A.1): ()21BAT = (A.1) EN ISO 2811-3:2011 (E) DIN EN ISO 2811-3:2011-06 8Annex B (informative) Density values for damp air, air-free water and tetrachloroethylene Table B.1 Density of damp air Pressure mbar Relative Temperature 900 920 940 960 980 1 000 1 013,25 1 050 humidityC Density Ag/cm3% 15 0,001 08 0,001 11 0,001 13 0,001 15 0,001 18 0,001 20 0,001 22 0,001 26 89 20 0,001 06 0,001 09 0,001 11 0,001 13 0,001 16 0,001 18 0,001 20 0,001 24 65 25 0,001 05 0,001 07 0,001 09 0,001 12 0,001 14 0,001 16
