| 摘要 |
System of metering the fluids, based on the method of the local reducing of the flowing section, which, for the purpose of measuring the parameters from the distribution pipe, there is used a sensor unit comprising a pessure sensor (4), a differential pressure sensor (5), a sensor of temperature compensation (6) and a sensor of the fluid temperature (7), said sensors being supplied with voltage from an electronic switch (8), only during the measuring, the voltages occurring at the outputs of said sensors being multiplexed by means of an analogic multiplexer (9) and applied to the input of an analogic-digital converter (10), the voltage digital signal being processed in a microcomputer (11) performing the calculation and the fluid flow metering at certain periods of time, between which the system is passed to a low electric energy consumption, the measured values being displayed on a display (13) or transmitted through a digital interface (14) to the distance, the entire system being supplied from a pile (15).
|
