control a 0-10v output with a redox for nitrate filter

[FawnberrystarReef]

Hi, I am interest in getting a profilux 3, I am wanting to find out if I can control a 0-10v output
With the redox for a nitrate filter

I have a speed controlled stepper motor dosing pump that accepts
A 0-5v and will use a voltage resistors to bring the 0-10v to the safe
5v

What I want to do is when the redox is -180mv the output steps up the more
Negative the value and speed the pump for more flow

And when the redo is -130mv the output steps down in turn making the pump slow down

I don't really want to have two pumps switching

[Gunther]

Hi, I am interest in getting a profilux 3, I am wanting to find out if I can control a 0-10v output
With the redox for a nitrate filter

Should be no Problem at all. You need a PL with a redox card or a PL..ex with build in redox support and the redox probe

I have a speed controlled stepper motor dosing pump that accepts
A 0-5v and will use a voltage resistors to bring the 0-10v to the safe
5v

There is no need for resistors. You can set the min. lower voltage from 0V up to 4,0V and the max. uppper voltage from 4.5V to 10V.
Setting regulation output to 0-5V is no prob at all. Only limit is the current, which should not exceed 20mA. If your device has a internal resistance which is hight enough, this should not be a problem.

What I want to do is when the redox is -180mv the output steps up the more
Negative the value and speed the pump for more flow

And when the redo is -130mv the output steps down in turn making the pump slow down

That´s not exact the way it works, but you can set a middle value of -155mV and a hysteresis of 25mV which is the same in function