This European Standard specifies the constructional requirements for 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.
EN 1434-2:2015 Referenced Document
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EN 1434-2:2015 history
2015EN 1434-2:2015 Heat meters - Part 2: Constructional requirements
2007EN 1434-2:2007 Heat meters - Part 2: Constructional requirements (Incorporating corrigendum October 2007)