EN 1434-2:2015

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Temperature sensors
5 Flow sensors
6 Calculators
7 Complete meter
8 Interfaces between sub-assemblies
9 Marking and security seals
Annex A (informative) - Examples of temperature sensors
Annex B (normative) - Input and output test signals
Annex C (informative) - Low voltage Power Supply for
        heat meters and their sub-assemblies
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2004/22/EC, MID
Bibliography

This European Standard specifies the constructional requirements and applies to heat meters. Heat meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The heat meter indicates the quantity of heat in legal units.Electrical safety requirements are not covered by this European Standard.Pressure safety requirements are not covered by this European Standard.Surface mounted temperature sensors are not covered by this European Standard.This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.