Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments (recast) (Text with EEA relevance)
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EU Directives are published on this site to aid cross referencing from UK legislation. Since IP completion day (31 December 2020 11.00 p.m.) no amendments have been applied to this version.
DEFINITIONSU.K.
A thermal energy meter is an instrument designed to measure the thermal energy which, in a thermal energy exchange circuit, is given up by a liquid called the thermal energy-conveying liquid.
A thermal energy meter is either a complete instrument or a combined instrument consisting of the sub-assemblies, flow sensor, temperature sensor pair, and calculator, as defined in Article 4(2), or a combination thereof
θ | = | the temperature of the thermal energy-conveying liquid; |
θin | = | the value of θ at the inlet of the thermal energy exchange circuit; |
θοut | = | the value of θ at the outlet of the thermal energy exchange circuit; |
Δθ | = | the temperature difference θin — θοut with Δθ ≥ 0; |
θmax | = | the upper limit of θ for the thermal energy meter to function correctly within the MPEs; |
θmin | = | the lower limit of θ for the thermal energy meter to function correctly within the MPEs; |
Δθmax | = | the upper limit of Δθ for the thermal energy meter to function correctly within the MPEs; |
Δθmin | = | the lower limit of Δθ for the thermal energy meter to function correctly within the MPEs; |
q | = | the flow rate of the thermal energy conveying liquid; |
qs | = | the highest value of q that is permitted for short periods of time for the thermal energy meter to function correctly; |
qp | = | the highest value of q that is permitted permanently for the thermal energy meter to function correctly; |
qi | = | the lowest value of q that is permitted for the thermal energy meter to function correctly; |
P | = | the thermal power of the thermal energy exchange; |
Ps | = | the upper limit of P that is permitted for the thermal energy meter to function correctly. |
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