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Thread: pH probe won't calibrate

  1. #1
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    pH probe won't calibrate

    Hope someone can maybe she'd some light on this problem I have. Haven't had any issues with my Apex till the other day. My internet went down a few days ago due to someone cutting a line outside and was without fusion until today. Once internet was restored I rebooted the Apex and everything appeared to be fine until about 20 min after the reboot the pH probe went from reading 8.1 all the way down to 6.6 which is where it sits now. I've tried recalibrating and no matter whether it's in the 7 or 10 solution it reads around 7. Not really sure what's going on but any help would be greatly appreciated

  2. #2
    Frequent Contributor zombie's Avatar
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    Does it read 7 around when you unplug it too?

    Sent from my SM-G965U using Tapatalk

  3. #3
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    Yeah it varies from 6.6 plugged in to 6.4 unplugged

  4. #4
    Frequent Contributor zombie's Avatar
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    Try a "probe reset" and then calibrate it. Unplug the probe. Do a manual calibration and just quickly scroll through next. Then manually calibrate. You should see a number in the general vicinity of 700 when in 7.01 solution and in the vicinity of 1000 when in 10.01 solution.

    Sent from my SM-G965U using Tapatalk

  5. #5
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    Do I need to do the calibration on Apex local or on the base unit ?

  6. #6
    Frequent Contributor zombie's Avatar
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    You can use apex local or fusion (or display if you have one).

    Sent from my SM-G965U using Tapatalk

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