ANORDINATION FOR UPPER MEASUREMENT OF CLEANING EQUIPMENT IN ENSKILDA LAEGENHETER I EN CENTRALUPPVAERMD FASTIGHET

摘要

A device for measuring heat consumption in individual apartments in a centrally heated building. The device includes a temperature transducer for measuring the representative temperature in each apartment and an outside temperature transducer for measuring outside air temperature. A measuring pulse generator cyclically and sequentially supplies measuring pulses to the outdoor transducer and simultaneously to a selected one of the inside transducers. The outside temperature and selected inside temperature transducers generate electrical pulses corresponding to the temperatures measured by them. These pulses are supplied to a differential circuit which converts the electrical pulses into an electrical difference signal indicating the difference between inside and outside temperatures for the selected apartment. The output of the differential circuit is connected to an analogue/digital converter which converts the electrical difference signal into a digital signal in the form of a number of current pulses corresponding to the difference signal. Switching means connect the output of the analogue/digital converter to a counter for the selected apartment.