I'm going to be installing a Sense & Dispense system that has a SWG, a cartridge filter and Goldline ProLogic controller. My question is regarding the plumbing of the effluent tubing of the probe cell to the pool supply/suction side of the exisitng pool plumbing. The installation manual shows the effluent side of the probe cell installed before the pool pump. My existing pool plumbing will not allow me to install the flex tubing for the effluent port before the pump (I have a check valve and then valve actuators immediately before the pool pump and I do not want to replumb the suction side of the pool plumbing); I can however install the effluent tubing after the pump and before the filter.
Is the reasoning for installing the effluent tubing before the pump (suction side) is that the pump suction will pull/suck the water from the probe cell and then be filled with pool water from the influent tubing on the return (supply) side?
If I install the effluent tubing between the pump and filter does that mean that the probes will not be testing/monitoring a constantly changing flow of pool water but rather a stagnant pool sample?
I hope this all makes sense so thanx for everyone's help and input.