ISO 6425:2018
Horology — Divers' watches
This document specifies requirements and test methods for divers' watches and for saturation divers' watches for use in deep diving (see Annex A which deals with watches for saturation diving).
It applies to divers' watches designed to withstand diving in water at depths of at least 100 m and equipped with a secured measuring system to indicate the diving time, which is visible in darkness.
Moreover, it indicates the marking which the manufacturer is authorized to apply to them.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test methods and requirements
4.1 General
4.1.1 Temperature
4.1.2 Visual checking
4.1.3 Tested product configuration
4.1.4 Practical meaning
4.1.5 Diving time indicator
4.1.6 Type testing and 100 % single watch testing
4.2 Visibility
4.2.1 In the light
4.2.2 In the dark
4.3 Magnetic resistance properties
4.4 Temperature cycling
4.5 Salt spray test (with bracelet)
4.6 Shock-resistance properties (on watch head)
4.7 Water-resistance
4.7.1 Functional devices in shallow water
4.7.2 Resistance when strain is applied to crown and other setting devices
4.7.3 Functional devices at a water overpressure
4.7.4 Resistance at a water overpressure
4.8 Shock-resistance properties (free-fall)
4.9 Resistance of attachments
4.10 Condensation test
5 Marking
6 Usage and maintenance recommendations
Annex A (normative) Divers' watches for saturation diving
Annex B (informative) Air-resistance at an air overpressure
Annex C (informative) Diving chart
Annex D (informative) Usage and maintenance recommendations
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test methods and requirements
4.1 General
4.1.1 Temperature
4.1.2 Visual checking
4.1.3 Tested product configuration
4.1.4 Practical meaning
4.1.5 Diving time indicator
4.1.6 Type testing and 100 % single watch testing
4.2 Visibility
4.2.1 In the light
4.2.2 In the dark
4.3 Magnetic resistance properties
4.4 Temperature cycling
4.5 Salt spray test (with bracelet)
4.6 Shock-resistance properties (on watch head)
4.7 Water-resistance
4.7.1 Functional devices in shallow water
4.7.2 Resistance when strain is applied to crown and other setting devices
4.7.3 Functional devices at a water overpressure
4.7.4 Resistance at a water overpressure
4.8 Shock-resistance properties (free-fall)
4.9 Resistance of attachments
4.10 Condensation test
5 Marking
6 Usage and maintenance recommendations
Annex A (normative) Divers' watches for saturation diving
Annex B (informative) Air-resistance at an air overpressure
Annex C (informative) Diving chart
Annex D (informative) Usage and maintenance recommendations
Bibliography