heat meter
as defined in Commission Delegated Regulation (EU) 2019/331 of 19 December 2018 determining…, Article 2, point (8) (Definitions)
a thermal energy meter (MI-004) within the meaning of Annex VI to Directive 2014/32/EU of the European Parliament and of the Council or any other device to measure and record the amount of thermal energy produced based upon flow volumes and temperatures;