AUTOMATIC CONCENTRATION CONTROL SYSTEM OF SOLUTION

摘要

An apparatus is provided to maintain the concentration of an aqueous solution constantly by detecting the concentration of the aqueous solution in real time through a sensor attached to a tank to control the operation of a pump. An apparatus for automatically controlling the concentration of solution comprises a sensor which is able to read the concentration of an aqueous solution into electric current and resistance value, a pump which supplies an original solution, an circuit plate in which a microprocessor capable of controlling the operation of the pump by the electric current and the resistance value input from the sensor.