Electronic meter for communal heating supply system - integrates temps. from flow and return pipes and under radiator for output on liquid crystal display fed by integrating circuit

摘要

Two temp. probes are mounted by collars onto the supply and return flow pipes to a radiator. A third temp. probe is mounted against the wall under the radiator and all three probes are connected to a counter by wires in protective sleeves. The probe outputs connect to an integrator and calculator circuit which receives an input from a clock circuit to provide an output power reading for the heat used by the radiator. The counter and calculator output is displayed on a liquid crystal display which shows the number of the counter and date information in the same window. This permits accurate sharing of heating costs for a communal heating supply.