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Thread: Big swings in the conductivity probe

  1. #1
    Join Date
    02.04.2018
    Posts
    9

    Default Big swings in the conductivity probe

    Hello,

    I have been comparing lately some charts with people that have P4 and I noticed that their conductivity is quite stable. Mine however is not at all.
    Here is how it looks at the moment:
    swing.JPG

    The probes are in the chamber before ATO, so the FW would have to pass the entire system before reaching them.
    At the recommendation of Vinny I changed the filter setting to strong but it had no effect.

    Comparing my charts with others, this is clearly not normal.

    Can you help me with this? What can I do about this?

  2. #2
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    What reaction do you get if you place the sensor in a cup of tank water for 24 hours?
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  3. #3
    Join Date
    02.04.2018
    Posts
    9

    Default

    It is not 24 hours yet but this is the reaction.
    overnight.JPG

    I used water from the tank and got a huge drop in salinity. It seems it has started rising. Will keep you updated after 24h.

  4. #4
    Join Date
    02.04.2018
    Posts
    9

    Default

    After ~22h this is how it looks. Seems to still be rising, maybe due to evaporation in part...
    swing22.JPG

    What do you think?

  5. #5
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    If your evaporation rate is that high, it would be better to replace with a new cup so you can see if the stability remains.
    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.

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  6. #6
    Join Date
    02.04.2018
    Posts
    9

    Default

    Hello, so I left the probe in a bigger cup for more time.
    Here is the graph.
    long.JPG

    After first try I moved the probe back to tank, then back to a larger cup and left it there, it is still there and I am not touching the cup in any way.

    Later Edit: even longer:
    longer.JPG

    What can I do about this? The behavior is present since I bought the P4.
    whole.JPG
    Last edited by AlexTm; 13.03.2022 at 13:43.

  7. #7
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    It may be best to replace the probe.

    If it was purchased recently, open a support ticket for further assistance.
    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.

    Creating a support ticket
    For support or warranty issues, create a support ticket by clicking here.

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