I have set up an Apex FMM with two optical sensors in my RODI water tank. One low sensor to turn on the RODI unit via a solenoid valve and one high sensor to turn off the RODI via a solenoid. The reasoning behind the plan is to try and prevent TDS creep by using the RODI water tank as a water ‘capacitor’ that only fills when the water tank is low. I also have a float valve for backup for the full sensor failure case, and intend to time the fill and implement that as an additional fail safe.
Where is the best location for the RODI solenoid? On the water input to the RODI or on the output from the RODI to the water tank? Please also state your reasoning.
Where is the best location for the RODI solenoid? On the water input to the RODI or on the output from the RODI to the water tank? Please also state your reasoning.