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//ISO 764:2020

ISO 764:2020

Name: ISO 764:2020 — Horology — Magnetic resistant watches
SKU: ISO 764:2020
Price: 25 EUR
Availability: InStock

Horology — Magnetic resistant watches

Название (английский):

ISO 764:2020

Horology — Magnetic resistant watches

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 21 февраля 2020 г.
Издание:: ISO IS 764 edition 4 version 1
ICS:: 39.040.10

Тип поставки:

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Язык документа:

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Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

This document specifies the minimum requirements and test methods for magnetic resistant watches. This document applies to magnetic resistant watches designed to withstand daily magnetic fields. Moreover, it indicates the marking which the manufacturer is authorized to apply to them.

Abstract

Overview

ISO 764:2020 - "Horology - Magnetic resistant watches" is the international standard that specifies minimum requirements and test methods for watches designed to resist everyday magnetic fields. It defines both ordinary (tested at 4 800 A/m) and (designed for stronger fields, ≥16 000 A/m), and it prescribes the marking manufacturers may apply.

Key topics and technical requirements

Scope and definitions: clarifies terms such as magnetic resistant watch, enhanced magnetic resistant watch and residual effect (difference in rate before and after exposure).
Performance criteria:
- Watches must not stop during magnetic field application (mechanical and electronic).
- For mechanical watches, limits on residual effect (rate change after exposure) depend on case size (stricter limits for larger cases).
- Electronic watches: no stepper motor may stop; multiple motors must all continue running.
Test conditions and environment:
- Tests on finished products, without removable bracelets.
- Room temperature: 23 °C ± 5 °C; watch temperature during rate measurement must not vary by more than ±2 °C.
Test apparatus and fields:
- Homogeneous, continuous direct current magnetic fields with admissible variation 0% to +5%.
- Standard test value: 4 800 A/m (daily magnetic fields); enhanced tests in Annex A use higher field strengths.
Test procedure (mechanical watches):
- Demagnetize in three orthogonal directions (3H–9H, 12H–6H, CH–FH) before initial rate measurement.
- Measure initial rate for at least 180 s (CH position, per ISO 3158).
- Apply field progressively, observe for 60 s (or longer for watches without second hands), remove field, then measure post-test rate and calculate residual effects.
Marking: authorized markings (e.g., "magnetic resistant" in multiple languages) and guidance on placement.

Applications and who uses it

ISO 764:2020 is used by:

Watch manufacturers and designers to certify magnetic resistance and apply correct markings.
Quality assurance and production testing teams to validate compliance during manufacturing.
Independent test laboratories performing standardized magnetic resistance tests.
Retailers and consumers seeking objective information about a watch’s resistance to everyday magnetic fields. Practical application includes product specification, marketing claims about antimagnetism, and regulatory/conformity documentation.

Related standards

ISO 3158 - Timekeeping instruments: symbolization of control positions (referenced for rate measurement positions).
Annexes in ISO 764:2020 include a flow chart for testing (Annex B) and guidance on distance relationships to magnetic-field sources (Annex C), useful for interpreting real-world exposure.

Keywords: ISO 764:2020, magnetic resistant watches, watch magnetic resistance testing, horology standard, antimagnetism, watchmakers, watch testing laboratory.

Технические детали

Технический комитет: ISO/TC 114/SC 12 - Antimagnetism
SKU: ISO 764:2020

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PDF

ISO 764:2020

Abstract

Overview

Похожие стандарты

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

ISO 3158:1976

Timekeeping instruments — Symbolization of control positions

ISO 8212:1986

Soaps and detergents — Techniques of sampling during manufacture

ISO 20662:2020

Ships and marine technology — Hopper dredger supervisory and control systems

ISO 3021:2023

Adventure tourism — Hiking and trekking activities — Requirements and recommendations

ISO 3826-2:2008

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ISO/IEC 24730-1:2014

Information technology — Real-time locating systems (RTLS) — Part 1: Application programming interface (API)

ISO 8668-5:1992

Aircraft — Terminal junction systems — Part 5: Detail specification for type 3 system

ISO 7574-3:1985

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and e…