FLOW MEASUREMENT APPARATUS AND PROCEDURE

摘要

PURPOSE: A flow measurement apparatus and procedure is provided to measure flow rate regardless of the type of fluid and achieve improved accuracy without additional sensors. CONSTITUTION: A flow measurement apparatus comprises a container(15) containing a fluid(10); a plurality of acoustic wave pipes(30,30a to 30e) each of which has an end arranged at the side wall of the container at the intervals of the level of the fluid and communicated to the container, and the other end connected to a common pipe such that the acoustic wave pipes are interconnected with each other; and a fluid level sensor board(35) for measuring flow rate by generating acoustic wave into the container and receiving the acoustic wave through the acoustic wave pipes and common pipe. The fluid level sensor board includes an acoustic wave generator; an acoustic wave speaker(58) for transmitting the acoustic wave generated from the acoustic wave generator into the container; an acoustic wave sensor(60) for sensing the acoustic wave transmitted through each acoustic wave pipe; an A/D converter for converting the signal output from the acoustic wave sensor into a digital signal; and a data processor for calculating flow rate from the data output from the A/D converter.