I.S. EN 125:2010

National Foreword
European Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Units of measurement and test conditions
6 Construction requirements
7 Performance
8 EMC/Electrical requirements
9 Marking, installation and operating instructions
Annex A (informative) - Gas connections in common use
        in the various countries
Annex B (informative) - Leak-tightness test - volumetric
        method
Annex C (informative) - Leak-tightness test - pressure
        loss method
Annex D (normative) - Conversion of pressure loss into
        leakage rate
Annex E (normative) - Electrical/electronic component fault
        modes
Annex F (normative) - Additional requirements for safety
        accessories and pressure accessories as defined in
        EU Directive 97/23/EC
Annex G (normative) - Materials for pressurized parts
Annex H (informative) - Additional materials for pressurized
        parts
Annex I (normative) - Requirements for controls used in
        DC supplied gas burners and gas burning appliances
Annex AA (informative) - Types of flame supervision devices
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2009/142/EC relating to appliances burning
         gaseous fuels
Bibliography

Defines the safety, construction and performance requirements for thermoelectric flame supervision devices, energized by a thermocouple intended for use with gas burners, gas appliances and similar use, hereafter referred to as 'controls'.