| 摘要 |
<p>A restrictor element (4) serves for measuring the amount of a flowing medium flowing through an advance pipe (1), the pressure differential occurring in the process being measured by a differential pressure sensor (8). The differential pressure sensor (8) and a temperature differential measuring element (11), which measures the temperature differential of the flowing medium in the advance pipe (1) and a return pipe (2), deliver signals to a computer (14). The computer (12) controls a drive (3), with the aid of which the restrictor element (4) is moved, so that it is either open or closed. A continuous signal is present at the control input (E) of the computer (14), and is converted by the computer (14) into a tempora sequence of OPEN-CLOSED signals for the restrictor element (4), so that the through flow and/or the quantity of heat can be controlled at will. Such a device can be used, for example, to control the heat quantity in heating installations and, at the same time, to calculate heating costs. …<IMAGE>… </p> |
