problem ph

Related to the development libraries, released by Curt Binder
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

kh is from 4 to 128 and down to 50

7 is for kh 230 and goes up to 100
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Huh??
What kh?
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

Let me explain by placing the probe in the solution of the reef angel 4 and going in the ra ph calibrazioen also scuotenso the probe does not give me less than 50 is put in solution 4 and 7 solution
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Why do you think it needs to be less than 50?
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

I think for on 4 04 and on 7 07 correct?
dbmet
Posts: 235
Joined: Thu Nov 10, 2011 11:49 am

problem ph

Post by dbmet »

Those numbers you are seeing in the calibration screen aren't the actual ph numbers. They are used to calibrate the control.
Image
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

then how do I calibrate the probe to 4 and 7? what numbers do I look?
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

explane please!
dbmet
Posts: 235
Joined: Thu Nov 10, 2011 11:49 am

problem ph

Post by dbmet »

Calibrate the probe using the calibrate screen by using the 4 solution and then the 7 solution and then exit out of the calibration to the main screen. Now you can verify from the main screen by putting the probe in the 4 solution and seeing what it reads on the main screen then do the same for the 7 solution.
Image
Sebyte

Re: problem ph

Post by Sebyte »

Take a look at this topic it might be what you are looking for.

http://forum.reefangel.com/viewtopic.ph ... tion#p2210
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

thanks
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

how do I make the count of those numbers for ph 4 and 7?
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

The numbers you see during calibration are the raw 8-bit ADC value that Arduino has internally.
It's a value that goes from 0 to 1023.
ph 7 is around 540 in that range and ph10 is around 830. So, for ph4, you will be looking at somewhere around 250 if my math is correct....
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

ok thanks
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

hello I tried to calibrate the pH and after an hour in kh 4 mi marks the maximum number of controller 86 and kh 7-329
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

Where should I put these two lines?
ReefAngel.PH Min = 250;
ReefAngel.PHMax = 512?
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

good this?
Attachments
ph min and max.png
ph min and max.png (55.16 KiB) Viewed 5589 times
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

You don't need those lines.
Just go through calibration and make sure you pick ph4 and ph7 as reference or it won't work.
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

I have to cancel these lines?
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

when time for calibration ph 4 and 7 in total?
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

there is a test to be done to see if the probe is to be changed?
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Calibrate and place the probe into the calibration fluids you used in the calibration.
It should show their value.
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

yes, I've done 100 times when I put it in the solution pH 4 I get kind ph 4:40
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

R: problem ph

Post by marco3020 »

Explane please

Inviato dal mio GT-I9300 con Tapatalk 2
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Maybe you ought to try the 7 and 10 if 4 and 7 is not working for you.
Someone else did it with 4 and 7 and got it to work just fine.
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

I need the probe 4 and 7 because I have to connect the reactor elletrovalvola
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Linearity of pH probe is pretty good within all ranges that we use:
http://en.wikipedia.org/wiki/Glass_electrode
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

Good morning and Merry Christmas to everyone today I calibrated the probe again and me with solution 4 = 4.16 and 7 = 7.02 solution over so I can not right?
I need to update some library?
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: problem ph

Post by rimai »

Looks pretty good.
You just need to let the probes stabilize a little more before you complete and also make sure that the solutions are the same temperature as your tank water.
You will never get exact measurements. This is not a scientific device nor the probe is scientific/lab grade.
Personally, your calibration is fine as it is.
It has a .16 deviation on a 3 ph span.
In the range of pH you are going to be working on, it would mean something like 0.025 ph deviation
I don't think your reactor can even notice this minute difference.
i more bubble inside your reactor can cause more deviation than that...
Just my 2 cents, but if you really want to push to get it down to perfect calibration, please go ahead.
Roberto.
marco3020
Posts: 75
Joined: Sun Feb 19, 2012 12:18 pm

Re: problem ph

Post by marco3020 »

good day yesterday, the solenoid valve is always on, and marks on the reef angel ph 680 up and down, now I have removed the pH probe from the reactor and put into solution pH 4 and pH 6.60 tells me, I try to recalibrate and idem, which I do?
with the reef angel...
Post Reply