pH number adjustment

[DrewPalmer04]

My probe reads low. I've recalibrated many times and still get 7.53 (+) or (-) a few...Any code adjustments just to make it read the true value 8.3? I'd just like to get it closer to my actual pH readings from my test kits.

[rimai]

What were the numbers you were getting while calibrating?

[DrewPalmer04]

548

787

I followed the steps for calibration 3 times...new solution too

[rimai]

The lower value seems very good, but the higher value seems a bit too low.
Did you rinse the probe with RODI before you put into 10?
What happens when you place the probe into 10 solution after it is calibrated? Does it read 10?

[DrewPalmer04]

it'll read 7 in the 7 solution and like 9 in the 10 solution...so that's what's weird. Will increasing the higher value in the client suite help me do what I want? I've tested my tank water and it's 8.3

[rimai]

yes.
It should be around 830.

[DrewPalmer04]

Thank you...I'll try that.


Now another question lol sorry.

What's the code for the "soft start" for relays 5 & 6?

I'm using this now.

Code: Select all

void setup()
    {
       randomSeed(analogRead(0));
        ReefAngel.Init();  //Initialize controller   
        ReefAngel.Timer[1].SetInterval(random(15,35));
        ReefAngel.Timer[1].Start(); 
        ReefAngel.Relay.On(Port5);
    }

    void loop()
    {
        

    if ( ReefAngel.Timer[1].IsTriggered() )
          {
            ReefAngel.Timer[1].SetInterval(random(15,35));
            ReefAngel.Timer[1].Start();
            ReefAngel.Relay.Toggle(Port5);
            ReefAngel.Relay.Toggle(Port6);
           }
      ReefAngel.ShowInterface();
    }

[rimai]

Are you talking about alternating wavemakers on opposite cycle?
If so, this works.

[DrewPalmer04]

Yes, but I'm using hydor power heads...I've read online that relay 5&6 can soft start??? That's needed to do wavemaker on those pumps..other wise they just mess up!

[rimai]

Yes, use 5 and 6 for wavemakers.

[DrewPalmer04]

I was just using them and based on the code above. They we not soft starting. It was just clicking them on 100% when the relay switched.

[rimai]

What do you mean with soft start?
Standard koralias can't vary speed. The controllable koralias need their own driver and can't be interfaced with RA.

[DrewPalmer04]

There is a type of wavemaker power strip out there that allows it to start say at 30% power then up to 100% based off 110 vac. Instead of just 0 then 100%. So the pumps "soft start" slowly then ramp to 100% instead of the power head just getting 100% power and grinding/breaking the power head teeth

[rimai]

I'm sorry, but the RA doesn't do that.
People have been using standard koralias with RA for a long time now.
I think the old generation koralias had problems, but not the newer ones. They used to spin backwards.

[DrewPalmer04]

Oh ok! So the newer ones people are not having problems with just going from 0-100% in a split second?

[DrewPalmer04]

I am a little confused though. People online reported soft start on relay 5&6? That's special about those two?

[rimai]

They have dampening components.
This is to avoid what is called inductive spike.
Motors tend to generate nasty spike on the power line when they turn on/off and doing so it can cause RA to pick up that noise and interfere with its operation.

[DrewPalmer04]

makes sense...thanks again roberto!

[DrewPalmer04]

Roberto,

Any recommendations for power heads that are ok with this 0 to 100% quick start relay set up of the Reef Angel?

[rimai]

Like I said, people have been using koralias for a long time.

[psyrob]

This is a little late for the issue, but I use Koralia Evolutions for the past year, the 1050s, and I have had no issues...they are going on an off at 45 second intervals for the past year and like I said, no problems.

Oh, Roberto:
I just re-calibrated my ph probe, and I got 810 for the 10.0 solution...this close enough? Or should I adjust up with the client software to 830? the 7.0 solution got me a 531