EN 1434-1:2015

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Types of instruments
5 Rated operating conditions
6 Technical characteristics
7 Specified working range
8 Heat transmission formula
9 Metrological characteristics (Maximum Permissible
   Error, MPE)
10 Environmental classification
11 Heat meter specification
12 Information to be made available by the manufacturer
   or supplier
Annex A (normative) - Heat coefficient equations
Annex B (normative) - Flow conditioner package
Annex C (normative) - Fast response meters
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 general 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.