1、 Reference number ISO 12628:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 12628 First edition 2011-01-15 Thermal insulating products for building equipment and industrial installations Determination of dimensions, squareness and linearity of preformed pipe insulation Produits isolants thermiques pour l
2、es quipements des btiments et les installations industrielles Dtermination des dimensions, de lquerrage et de la linarit des coquilles isolantes prformes ISO 12628:2011(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printe
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7、1 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedISO 12628:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Terms and definitions .1 3 Principle .2 4 Apparatus.2 4.1 For circumference, outside and insi
8、de diameter and thickness 2 4.2 For length .3 4.3 For deviation from squareness3 4.4 For deviation from linearity 3 5 Test specimens5 5.1 Dimensions of test specimens.5 5.2 Number of test specimens .5 5.3 Conditioning of test specimens.6 6 Procedure.6 6.1 Test conditions6 6.2 Test procedure.6 7 Calc
9、ulation and expression of results 8 7.1 Outside diameter and inside diameter 8 7.2 Thickness .8 7.3 Thickness uniformity 9 7.4 Length.9 7.5 Deviation from squareness 9 7.6 Deviation from linearity 9 8 Accuracy of measurement .9 9 Test report9 ISO 12628:2011(E) iv ISO 2011 All rights reservedForeword
10、 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
11、 committee has been established has the right to be represented on that committee. International organizations, governmental 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 elec
12、trotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the
13、 member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for iden
14、tifying any or all such patent rights. ISO 12628 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 1, Test and measurement methods. ISO 12628 includes the original EN 13467 prepared by Technical Committee CEN/TC 88 Thermal in
15、sulating materials and products. However, Subclause 5.3, “conditioning of test specimen”, Subclause 6.1, “test conditions”, and Clause 9, “test report” have been modified to reflect conditions for tropical countries. This International Standard is one of a series of standards which specify test meth
16、ods for determining dimensions and properties of thermal insulating materials and products. The original EN 13467 supports a series of product standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on the approximation of laws, regulations
17、 and administrative provisions of the Member States relating to constructive products (Directive 89/106/EEC) through the consideration of the essential requirements. ISO 12628:2011(E) ISO 2011 All rights reserved vThis International Standard is one of a series of existing European Standards on test
18、methods for products used to insulate building equipment and industrial installations which is comprised of the following group of International Standards: ISO standard Title Respective EN standard ISO 12623 Thermal insulating products for building equipment and industrial installations Determinatio
19、n of short-term water absorption by partial immersion of preformed pipe insulation EN 13472 ISO 12624 Thermal insulation products Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH EN 13468 ISO 12628 Thermal insulating products for building equipment
20、and industrial installations Determination of dimensions, squareness and linearity of preformed pipe insulation EN 13467 ISO 12629 Thermal insulating products for building equipment and industrial installations Determination of water vapour transmission properties of preformed pipe insulation EN 134
21、69 A further series of existing European Standards on test methods was adopted by ISO. This “package” of standards comprises the following group of interrelated standards: ISO standard Title Respective EN standard ISO 29465 Thermal insulating products for building applications Determination of lengt
22、h and width EN 822 ISO 29466 Thermal insulating products for building applications Determination of thickness EN 823 ISO 29467 Thermal insulating products for building applications Determination of squareness EN 824 ISO 29468 Thermal insulating products for building applications Determination of fla
23、tness EN 825 ISO 29469 Thermal insulating products for building applications Determination of compression behaviour EN 826 ISO 29470 Thermal insulating products for building applications Determination of the apparent density EN 1602 ISO 29471 Thermal insulating products for building applications Det
24、ermination of dimensional stability under constant normal laboratory conditions (23 degrees C/50 % relative humidity) EN 1603 ISO 29472 Thermal insulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1604 ISO 29764 T
25、hermal insulating products for building applications Determination of deformation under specified compressive load and temperature conditions EN 1605 ISO 29765 Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1607 ISO 29766 Thermal ins
26、ulating products for building applications Determination of tensile strength parallel to faces EN 1608 ISO 29767 Thermal insulating products for building applications Determination of short-term water absorption by partial immersion EN 1609 ISO 12628:2011(E) vi ISO 2011 All rights reservedISO standa
27、rd Title Respective EN standard ISO 29768 Thermal insulating products for building applications Determination of linear dimensions of test specimens EN 12085 ISO 29769 Thermal insulating products for building applications Determination of behaviour under point load EN 12430 ISO 29770 Thermal insulat
28、ing products for building applications Determination of thickness for floating-floor insulating products EN 12431 ISO 29771 Thermal insulating materials for building applications Determination of organic content EN 13820 ISO 29803 Thermal insulation products for building applications Determination o
29、f the resistance to impact of external thermal insulation composite systems (ETICS) EN 13497 ISO 29804 Thermal insulation products for building applications Determination of the tensile bond strength of the adhesive and of the base coat to the thermal insulation material EN 13494 ISO 29805 Thermal i
30、nsulation products for building applications Determination of the mechanical properties of glass fibre meshes EN 13496 The Application of Agreement on technical cooperation between ISO and CEN (Vienna Agreement), Modes 1, 2, 4 and 5, was not approved by CEN/TC 88 and the necessity not seen by its st
31、akeholders. INTERNATIONAL STANDARD ISO 12628:2011(E) ISO 2011 All rights reserved 1Thermal insulating products for building equipment and industrial installations Determination of dimensions, squareness and linearity of preformed pipe insulation 1 Scope This International Standard specifies the equi
32、pment and procedures for determining the dimensions, squareness and linearity of preformed pipe insulation, supplied in one piece, half sections or segments. It is applicable to thermal insulating products. 2 Terms and definitions For the purposes of this document, the following terms and definition
33、s apply (see Figures 1 and 4). 2.1 circumference C circular length of the outer surface of the pipe insulation 2.2 outside diameter D olinear distance between two opposite points on the outside surface of the pipe insulation measured across the centre 2.3 inside diameter D ilinear distance between t
34、wo opposite points on the inside surface of the pipe insulation measured across the centre 2.4 length l linear dimension measured perpendicularly to the circumference of the pipe insulation 2.5 thickness d thickness of the insulation product measured perpendicularly between the outside and the insid
35、e surface of the pipe insulation 2.6 deviation from squareness v maximum distance between a product, at its end, from a line which just touches the product and which is perpendicular to its major axis NOTE See Figure 4. ISO 12628:2011(E) 2 ISO 2011 All rights reserved2.7 deviation from linearity L m
36、aximum distance between a plane reference surface on which the test specimen rests and the outside surface of the pipe insulation Dimensions in millimetres Key 1 flat surface 2 locations for measurements (see 6.2.2.3) Figure 1 Illustration of the definitions 3 Principle Determination of the dimensio
37、ns, squareness and linearity of a pipe insulation along or at a right angle to its major axis. 4 Apparatus 4.1 For circumference, outside and inside diameter and thickness 4.1.1 Metal tape, graduated in millimetres for measuring circumference and diameter. Accuracy of reading: diameter at least 1 mm
38、, circumference at least 3 mm. 4.1.2 Metal pipe, for supporting the insulation with an outside diameter which ensures no deformation of the product. 4.1.3 Rack, for supporting the metal pipe (see Figure 2). ISO 12628:2011(E) ISO 2011 All rights reserved 34.1.4 Thickness gauge, capable of applying a
39、load of minimum (0,5 0,05) N to a load distributing plate, diameter 50 mm. The load shall be such that no deformation of the product occurs during measurement. Accuracy of reading at least 0,5 mm. 4.1.5 Conical mandrel, graduated in 0,5 mm intervals (see Figure 3). Accuracy of reading at least 0,5 m
40、m. 4.1.6 Caliper Accuracy of reading at least 0,1 mm. 4.2 For length 4.2.1 Metal tape, graduated in millimetres. Accuracy of reading at least 1 mm. 4.3 For deviation from squareness 4.3.1 Metal square with limbs at least 500 mm long with a deviation from squareness of not more than 0,1 mm when measu
41、red at 500 mm from the corners (see Figure 4). 4.3.2 Metal tape, graduated in millimetres. Accuracy of reading at least 1 mm. 4.4 For deviation from linearity 4.4.1 Flat surface, on which the test specimen rests. 4.4.2 Metal tape, graduated in millimetres. Accuracy of reading at least 1 mm. 4.4.3 Th
42、ickness gauge, (wedge shape), graduated in 0,5 mm (see Figure 5). Accuracy of reading at least 0,5 mm. NOTE For all measured dimensions test equipment which provides the same result with at least the same accuracy can be used. ISO 12628:2011(E) 4 ISO 2011 All rights reservedKey 1 thickness gauge 2 t
43、est specimen 3 metal pipe 4 rack 5 load distribution plate Figure 2 Example of equipment for thickness measurement with thickness gauge Dimensions in millimetres Figure 3 Example of conical mandrel Key 1 test specimen Figure 4 Principle of measurement of deviation from squareness ISO 12628:2011(E) I
44、SO 2011 All rights reserved 5Dimensions in millimetres Figure 5 Thickness gauge (wedge shape) 5 Test specimens 5.1 Dimensions of test specimens The test specimens shall be, wherever possible, the full-size pipe insulation product. The dimensions of the test specimens shall be measured including any
45、surface skins, facings, or coatings on both the inner and the outer surfaces. NOTE For the measurement of circumference/outside diameter, inside diameter, and thickness, the test specimen can be divided transversely or longitudinally into several pieces; minimum dimension is 100 mm. Pipe insulation
46、pieces (half sections or segments), which together form a complete pipe insulation layer, without visual deformation, shall be held in place by adhesive tape to facilitate measurement (see Figure 6). a) Two half sections b) Segments Figure 6 Examples of pipe insulation pieces 5.2 Number of test spec
47、imens The number of test specimens shall be as specified in the relevant product standard. If the number is not specified, then at least three test specimens shall be used. NOTE In the absence of a product standard or any other European technical specification, the number of test specimens can be ag
48、reed between parties. ISO 12628:2011(E) 6 ISO 2011 All rights reserved5.3 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (23 5) C. In case of dispute, they shall be stored at (23 2) C and (50 5) % RH (relative humidity) for the time stated in the relevant produ
49、ct standard. In tropical countries, different conditioning and testing conditions can be relevant. In this case, the conditions shall be (27 5) C and (65 5) % RH, and shall be stated clearly in the test report. 6 Procedure 6.1 Test conditions The test shall be carried out at (23 5) C. In case of dispute, it shall be carried out at (23 2) C and (50 5) % RH. In tropical countries, different conditioning and testing conditions can be relevant.
