Electronic integration calorimeter - for water flowing through air conditioner, represents temp. difference and flow rate by pulse signals

摘要

An electronic integration calorimeter comprises a temperature difference detector for detecting a difference between the temperature of a heat medium flowing into a heat load and the temperature of the heat medium flowing out of the heat load, and a flow pulse generator for generating a flow pulse signal having the number of pulses proportional to the flow of the heat medium. The flow pulse signal is shaped by a pulse shaping circuit into a flow pulse signal having a predetermined pulse width. A temperature difference pulse generator generates a signal having the number of pulses proportional to the output voltage of the temperature difference detector, and is controlled by the shaped flow pulse signal so as to generate a pulse signal obtained by ANDing together the temperature pulse signal and the flow pulse signal.