pinpoint ph controller help

rick17 · #1 10/31/2007, 02:34 PM

I bought a used controller and i'm having problemes whit the set point it'the range and center value that i dont get you put the switch on hight and whit the range screw you adjust the reading (6.8) then i but the switch to the low mark and adjust it to(6.2) then i com back to the high reading and it has change i guess a have to do whit the center value screw I'm just confus can somebody help me
thanks rick

reefturkey · #2 10/31/2007, 02:51 PM

How old is the probe?

rick17 · #3 10/31/2007, 05:31 PM

the probe is new it'not the PH that changes it's to get the right range the hight and low range and the set point that got me confuse

rick17 · #4 10/31/2007, 10:59 PM

somebody