PH Calibration

[Civics14]

I don't think my PH calibration is going correctly

Ran the calibration test, results are:
7.0 - 511 (7.0 solution reads 7.0 after calibration)
10.0 - 748 (10.0 solution reads 9.5 after calibration)

Any help with those numbers?

[cosmith71]

You might need to leave the probe in the calibration solution for several minutes to get to the final calibration number when you're calibrating.

--Colin

[Civics14]

Hi Colin, I left it in there for almost 10 min each to a point where the numbers stayed put and stopped changing

[fishflipper]

are you using an expansion module?

[Civics14]

No expansion module here. I was hoping to get Roberto's help because he helped me with this before where my PH reading was off like this.

[cosmith71]

I'm sure Roberto will chime in.

Silly question, but when you're calibrating, you're moving over to OK before you hit the button, correct? It starts off on "Cancel".

[Civics14]

LOL. Yes. Thank you Collin. Actually I go into the code and add in a few lines that Roberto had me do the last time.

[rimai]

The numbers look fine.
You can hard code them.

Code: Select all

ReefAngel.PHMin=511;
ReefAngel.PHMax=760;

Play with the 760 until it turns pH 10. Or go into calibration mode with the probe in the ph 10 fluid and write down the number you see it.

[Civics14]

Thanks Roberto, I'll try those numbers. No idea what they mean, but the last time you adjusted it for me, it worked.

The numbers look fine.
You can hard code them.

Code: Select all

ReefAngel.PHMin=511;
ReefAngel.PHMax=760;

Play with the 760 until it turns pH 10. Or go into calibration mode with the probe in the ph 10 fluid and write down the number you see it.