Help setting up ph control

[sknoch78]

I am trying to set up my unit to control the ph in my calcium reactor. I understand how to go in and program, but I need some help on imputing the correct values. My goal is to turn on the co2 at 6.7 and turn it off at 6.8. I am assuming I put in the value of 6.7 and a min. of 0 and a max of .10.

Is this correct?

Also when controlling the plug, I would use the top line for turning off at said max and the bottom for turning on at said minimum?

My goal is to stay between the two numbers.

Any help would be appreciated.

Shawn

[EdMiller]

You would actually need to turn the CO2 ON at 6.8 and OFF at 6.7. The CO2 lowers the ph in the reactor, this would turn on the CO2 when the Ph rises. I assume that you have a CO2 solenoid on you reg. You just need to control that plug with the Ph probe that is for the reactor. Set you reference at 6.8 them set a min value of 0.1 with the command to turn off the plug.

Personally, I think that the value spread you are choosing is too narrow, you may find it has to do way more switching with those values. I have mine set for 6.7 - 7.0 and have the bubble count adjusted fairly close to what is required, but just slightly to the high side. That way it has to switch off much less frequently.

[sknoch78]

Okay, I am still trying to get this worked out. I have a Korallin reactor with A.R.M. media with a ph probe in the reactor. I have been told that the target ph in the reactor should be 6.7 to 6.8.


Can someone please share there program with me?

Things I would like to know.

Refference point
Delta min.
Intervention with sensor value
Plug state

Delta max.
Intervention with sensor value
Plug state

Thanks in advance.

Shawn