GB/T 26716-2023 English PDF

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GB/T 26716-2023: Horology - Magnetic resistant watches
Status: Valid

GB/T 26716: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 26716-2023	264	Add to Cart	3 days	Horology - Magnetic resistant watches	Valid
GB/T 26716-2011	359	Add to Cart	3 days	Horology -- Magnetic resistant watches	Obsolete

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Basic data

Standard ID: GB/T 26716-2023 (GB/T26716-2023)
Description (Translated English): Horology - Magnetic resistant watches
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y11
Classification of International Standard: 39.040.10
Word Count Estimation: 14,140
Date of Issue: 2023-08-06
Date of Implementation: 2024-03-01
Older Standard (superseded by this standard): GB/T 26716-2011
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 26716-2023: Horology - Magnetic resistant watches

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 39.040.10 CCSY11 National Standards of People's Republic of China Replace GB/T 26716-2011 clock antimagnetic watch (ISO 764.2020,IDT) Published on 2023-08-06 2024-03-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 26716-2011 "Antimagnetic Watches and Clocks". Compared with GB/T 26716-2011, except for structural adjustment and compilation In addition to editorial changes, the main technical changes are as follows. a) Added the term and definition "enhanced anti-magnetic watch" and its requirements (see 3.2, 4.1); b) The chapter "Significance" has been deleted (see Chapter 4 of the.2011 edition); c) Added the calculation formula for the residual effect of mechanical watches after applying a magnetic field (see 4.2.2); d) Added requirements for “other effects” for mechanical watches and electronic watches (see 4.2.3 and 4.3.2); e) Changed the requirements for magnetic field intensity changes during the test in "Test Instruments" (see 5.2, 6.2 of the.2011 edition); f) Added the demagnetization step in the antimagnetic test of mechanical watches (see 5.3.2.1.1); g) The method of measuring the initial instantaneous daily difference of mechanical watches has been changed (see 5.3.2.1.3, 6.3.1 of the.2011 version); h) Changed the method of antimagnetic test for mechanical watches (see 5.3.2.2, 6.3.2 of the.2011 edition); i) Added “test procedures for electronic watches” (see 5.3.3); j) The title and content of Appendix A have been changed (see Appendix A, Appendix A of the.2011 version). This document is equivalent to ISO 764.2020 "Antimagnetic Watches and Clocks". Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Light Industry Federation. This document is under the jurisdiction of the National Watch and Clock Standardization Technical Committee (SAC/TC160). This document was drafted by. Fiyta Precision Technology Co., Ltd., Shenzhen Titan Clock Technology Co., Ltd., Zhuhai Rossini Watch Industry Co., Ltd., Xi'an Light Industry Watch Research Institute Co., Ltd., Shenzhen Fiyada Precision Technology Co., Ltd., Shenzhen Geya Watch Industry Co., Ltd. Company, Tianjin Haiou Watch Group Co., Ltd., Fujian Ruida Precision Co., Ltd., Zhangzhou Hengli Electronics Co., Ltd., Zhangzhou Yingzi Clock Co., Ltd., Dongguan Deli Clock Co., Ltd. The main drafters of this document. Tang Haiyuan, Zhang Na, Wang Yanmin, Zhao Yan, Guo Xingang, Liang Xinxin, Chen Bin, Song Pengtao, Weng Jianyin, Liu Yarui, Sha Linkai, Tang Xinyi, Zhou Wenxia, Ma Jing, Jiang Wei, Li Xia, Shao Yueming, Zhuang Manyi, Chen Huangting, Liang Weihao, Li Xiaowei. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 26716-2011 in.2011; ---This is the first revision. clock antimagnetic watch

1 Scope

This document specifies the technical requirements for antimagnetic watches, gives the markings that manufacturers are allowed to use, and describes the test methods for antimagnetic watches. This document applies to the design and testing of antimagnetic watches capable of withstanding everyday magnetic fields.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. tions) Note. GB/T 4028-2013 Inspection position marking of timing instruments (ISO 3158.1976, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. The terminology databases of ISO and IEC can be accessed at. 3.1 A watch that can withstand the uniform and continuous DC magnetic field of 4800 A/m encountered daily. 3.2 A watch that can withstand a uniform and continuous strong DC magnetic field of 16,000 amps per meter (A/m) and above at close range. 3.3 residualeffectresidualeffect The difference between the instantaneous daily difference before and after the antimagnetic test.

4 requirements

4.1 General requirements When a magnetic field of 4800A/m is applied, antimagnetic watches shall comply with the requirements of 4.2 or 4.3.Reinforced anti-magnetic watches shall comply with Appendix A requirements. 4.2 Requirements for mechanical watches 4.2.1 Operating conditions of mechanical watches during application of a magnetic field During the observation period the magnetic field is applied, the watch should not stop. ......

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