Heat meters - Part 3: Data exchange and interfaces

This European Standard applies to heat meter, that is to instruments intended for measuring the heat which, in a heat-exchange circuit, is absorbed or given up by a liquid called the energy-conveying liquid. The meter indicates heat in legal units. Electrical safety requirements are not covered by this standard. Part 3 describes the data exchange between a meter and a read-out device (POINT/POINT communication). For these applications using the optical readout head and the CL interface, the EN 61107 protocol is recommended.