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Thread: KHD - Sudden Change of Measurement Value

  1. #1
    Join Date
    13.02.2020
    Posts
    124

    Default KHD - Sudden Change of Measurement Value

    Only been running the KHD for three weeks and yesterday got a one-off higher reading moving from a consistent 8.2 to 8.5 and then suddenly jumped to 9.1 from 8.2 over an 8 hour period and then gradually back again to 8.2 in just over 24 hours.

    Anyone any ideas why this would occur as there is no changes been made within the system and I have not yet got control set up. - see screenshot


    Screenshot 2020-05-10 at 15.21.14.jpg


    Many thanks
    Last edited by mlandscape; 11.05.2020 at 10:58.

  2. #2
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    It looks like an air bubble made its way into the sample tube.

  3. #3
    Join Date
    13.02.2020
    Posts
    124

    Default

    Thanks, Vinny seems to have settled down again. By sample tube do you mean the tube carrying the water from the aquarium or in where the probe is positioned

    Many thanks

  4. #4
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    Yes, the tube that carries the water from the tank to the KHD.

  5. #5
    Join Date
    13.02.2020
    Posts
    124

    Default

    OK thanks I'll keep my eye on it

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