PH -203 PH,ORP Controller

[Fire]

Anyone can help me how to tune the ORP setting of the above controller... and what the MV to be set at? Thanks

[KTLK]

u need a screwdriver & adjust the value at the part mark "set"

Normally people set at 350Mv

[Fire]

Thanks bro for the direction, but can you tell me must I switch to the set button then adjust with screwdriver then set back to M button right. thanks

[Angel]

Thanks bro for the direction, but can you tell me must I switch to the set button then adjust with screwdriver then set back to M button right. thanks

Of course .. move the slide switch to the "M" position from the "set" after setting the setpoint value.