ES358307A1 - Electronic device for control of ionic exchange processes. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Electronic apparatus for controlling ion exchange processes, characterized in providing a voltage proportional to the ratio of two resistors of which contained one of the terms is the resistance measured between two electrodes placed in an ion exchange bed, a short distance from the bottom of it, through which the effluent outlet takes place, while the one in the remaining term is the resistance measured between two electrodes placed in a cell of insulating material filled with spent resin, through which the untreated liquid passes before entering the ion exchange device; in that said voltage, suitably amplified, it is used to activate a reading instrument and to provide two signals through the corresponding circuits of the digital type, at two different levels, one when said voltage reaches a value corresponding to the resin exhaust process, and another when the voltage reaches a slightly lower but next value corresponding to the regenerated resin free regenerant solution in said signals or the absence thereof, serves to raise the alarm and/or trigger an automatic regeneration process, indicate the end of the expulsion of the regenerant, and, if necessary, carry out the change of the arrangement of valves opened and closed to give way to the effluent already treated, or to give alarm during an automatic process of regeneration if for any reason the regenerating solution has not penetrated into the exchanger bed. (Machine-translation by Google Translate, not legally binding)