Results 1 to 8 of 8

Thread: PH Probe issues

  1. #1
    Join Date
    26.07.2012
    Posts
    4

    Default PH Probe issues

    Hi everyone,

    I am having some issues with my PH probe that came with my Profilux 3ex Mega Set which was purchased about 3 months ago. I have tried to contact GHL via email but I am not sure if that was the correct way to get help.

    My PH probe keeps fluctuating up to ridiculous numbers of 10+ PH and down to 7PH.

    I have calibrated the probe following GHL's instructions after calibration liquid was floating in tank water for 24 hours. Did 3x calibration over 3 consecutive days... and every day I got a completely different ADC value;

    Original figure: ADC (7ph) 419
    ADC (9ph) 261

    Day 1: ADC (7ph) 338
    ADC (9ph) 214

    Day 2: ADC (7ph) 378
    ADC (9ph) 247

    Day 3: ADC (7ph) 395
    ADC (9ph) 263

    I am really not sure what the problem is? Possibly a faulty probe? I also checked for electrical interference and disconnected everything from the power board one by one and there was no change.

    Any help or information would be much appreciated.

    Thanks

    Joe

  2. #2
    Join Date
    18.02.2009
    Location
    Kaiserslautern
    Posts
    7,710

    Default

    maybe the probe got dry

    let us see if the probe stabilizes in the next days, OK?
    No support or warranty issues over PM! Please send PMs to the moderators only if you have general problems with using the forum! Thanks for helping us to keep the support efficient.
    Kein Support oder Reklamationsabwicklung über PM! Bitte senden Sie an die Moderatoren nur PMs bei allgemeinen Problemen mit der Verwendung des Forums! Danke dass Sie uns dabei helfen, den Support effektiv zu gestalten.

  3. #3
    Join Date
    26.07.2012
    Posts
    4

    Default

    Ok thank you

    Caroline got back to via email just after I had put up this post. Sorry I didn't mean to ask for support twice just wasn't sure if email was the correct way.

    I calibrated the probe again last night;
    ADC (7ph) 385
    ADC (9ph) 252

    Now the PH is sitting at 8.22 which is about right. I will keep you updated if it goes crazy again. Thanks for the help.

    Cheers

  4. #4
    Join Date
    26.07.2012
    Posts
    4

    Default

    Ok so the PH probe is still fluctuating like crazy... it sat at 8.18-8.22 for the majority of the day and out of no where it jumped up to 9.6 then back down to 8.5 and now its sitting at 8.86.

    Any other ideas?

  5. #5
    Join Date
    26.07.2012
    Posts
    4

    Default

    Still having lots of problems with the PH probe I have to recalibrate it once every 3 days because it just keeps fluctuating. I still get different values every time I calibrate. I don't know what reading to trust anymore.

  6. #6
    Join Date
    19.02.2009
    Posts
    2,976

    Default

    Hello,

    I have sent you an e-mail regarding this issue.

  7. #7
    Join Date
    12.05.2010
    Posts
    343

    Default

    I am also having this issue, but its happening with 2 different probes.

    I can actually see the pH fluctuate over 10 min of watching it. Are the probes not allowed to be dry? How do i fix this issue?

  8. #8
    Join Date
    15.05.2010
    Location
    Waynesville, North Carolina USA
    Posts
    463

    Default

    Quote Originally Posted by richard.mayo View Post
    I am also having this issue, but its happening with 2 different probes.

    I can actually see the pH fluctuate over 10 min of watching it. Are the probes not allowed to be dry? How do i fix this issue?
    I don't think a pH probe is supposed to ever dry out. You may have to look into new probes if they don't stabilize after a calibration.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •