AVERAGE WATER QUALITY MEASURING SYSTEM OF OPEN WATERWAY

摘要

PURPOSE: An apparatus which is able to measure average value of water quality is provided to effectively install a device for measuring at several points and to easily control a controller for imputing drug. CONSTITUTION: A system which is able to measure average value of water quality comprises: a sampling pipe(5) which has plural holes and is mounted in a certain slope; and a device for measuring water quality in mixed water. The sampling pipe is circular or ellipse. The hole(6) of the sampling pipe is constituted to separate from a direction which fluid flows. The hole of the sampling pipe has wide outside and narrow inside for easy flow of fluid into the sampling pipe.