| 摘要 |
An electronic data processing system for a vortex-type flowmeter wherein the fluid to be measured is directed past a vortex-producing element to induce fluidic variations whose frequency is a function of flow rate. These variations are detected by a sensor yielding a signal having an A-C component whose frequency represents the uncorrected flow rate and a D-C component whose magnitude represents the temperature of the fluid. In order to correct for the effect of temperature on the accuracy of the reading, the signal components are separated from each other and converted into corresponding digital values which are fed into the data processing system to which are also applied digital values representing the fluid characteristics, the system producing an output signal representing the true flow rate.
|
