BS EN 13721-2004 家具.表面反射性的评定.pdf
《BS EN 13721-2004 家具.表面反射性的评定.pdf》由会员分享,可在线阅读,更多相关《BS EN 13721-2004 家具.表面反射性的评定.pdf(12页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 13721:2004 Furniture Assessment of the surface reflectance The European Standard EN 13721:2004 has the status of a British Standard ICS 97.140 - - - - - - BS EN 13721:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on
2、 20 September 2004 BSI 20 September 2004 ISBN 0 580 44464 3 National foreword This British Standard is the official English language version of EN 13721:2004. The UK participation in its preparation was entrusted to Technical Committee FW/1, Common test methods for furniture, which has the responsib
3、ility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Intern
4、ational Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Bri
5、tish Standard does not of itself confer immunity from legal obligations. 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 interests informed; monitor related international and European de
6、velopments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publicat
7、ion Amd. No. DateComments - - - - - - e - - - - - - - - 3 - E- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - - - - - - - - - - - - EN 13721:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .4 4 Principle5 5 Viewing/illumination
8、condition geometry .5 6 Standard colorimetric observer and standard illuminant6 7 Equipment 6 8 Preparation and conditioning of test units/test panels .7 9 Instrument calibration.7 9.1 Calibration7 9.2 Reference scale7 9.3 Reference standards (primary and working) 7 10 Test Procedure.7 11 Test repor
9、t 8 Bibliography9 - - - - - - EN 13721:2004 (E) 3 Foreword This document (EN 13721:2004) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an iden
10、tical text or by endorsement, at the latest by January 2005, and conflicting national standards shall be withdrawn at the latest by January 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European St
11、andard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. - - - - - - EN 13721
12、:2004 (E) 4 1 Scope This document specifies a method for the assessment of the surface reflectance of furniture surfaces and relates to rigid surfaces of all finished products regardless of materials, except for finishes on leather and fabrics, which are excluded from this document. The test is inte
13、nded to be carried out on finished furniture, but can be carried out on test panels of the same material, finished in an identical manner to the finished product, and of a size sufficient to meet the requirements of the test. The test method does not apply to extreme reflectances, i.e. below 15 % an
14、d above 75 %, because in the extreme reflectance range the results of the different measurement methods could deviate. It is not applicable to some metallic paints and pearly coatings. 2 Normative references The following referenced documents are indispensable for the application of this document. F
15、or dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7724-1:1984, Paints and varnishes - Colorimetry Part 1: Principles ISO 7724-2, Paints and varnishes Colorimetry - Part 2: Colour measurem
16、ent CIE 1931, Standard colorimetric colour coordinates CIE 1964, Colorimetry, CIE Standard Recommendations 3 Terms and definitions For the purposes of this document the following terms and definitions apply. 3.1 reflectance ratio of the radiant flux reflected in the directions within a given cone to
17、 that reflected in the same directions by a perfect reflecting diffuser identically irradiated in the observed wavelength interval (called spectral reflectance factor R ( ) in ISO 7724-1:1984) 3.2 trichromatic compound or lightness factor, Y value given by the equation in clause 10 of this document
18、3.3 test unit finished item of furniture 3.4 test surface part of the test unit, where the test area is included - - - - - - EN 13721:2004 (E) 5 3.5 test panel panel produced in the same way as the test surface; it shall be used when it is not possible to carry out the test directly on the test surf
19、ace 3.6 test area area under the equipment, where the measurement is carried out 3.7 pearly coatings coating with pearly additives. The pearly additives act like microscopy mirrors reflecting and transferring the light in several directions 4 Principle This standard is based on the reflectance measu
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS EN 13721-2004 家具.表面反射性的评定 13721 2004 家具 表面 反射 评定
链接地址:https://www.31doc.com/p-3644702.html