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Thread: Probe connections when moving Profilux around

  1. #1
    Join Date
    03.12.2011
    Location
    Græsted
    Posts
    127

    Default Probe connections when moving Profilux around

    Hi All.

    I have found that if i move my Profilux 3 EX around on the shelf it is placed, when cleaning e.g. the values are changing for example conduct 1, redox 1 or pH 1, it must have something to do with the conductivity in the BNC connectors. When turning the thin end in the back of the BNC a little from left to right, then i can get the "values" back on track, but only if i know the actual values in the moment the issue occurs. Its a bit unsafe if someone by accident moves or pushes the Profilux, then i cant rely on the values, and need to calibrate the probes again.

    I'm running a big Ca reactor on pH 1, controlled by the KH Director, and need the values to be stable... Even if the Profilux is manipulated around. The cables are loose in the back of the Profilux, to avoid any bend or stretch related issues.

    Best reg.

    Tom

  2. #2
    Join Date
    27.05.2015
    Posts
    2,488

    Default

    Hi Tom,

    How old are these probes?
    Do you have these cables running alongside any power cords, LED drivers, or ballasts?

  3. #3
    Join Date
    03.12.2011
    Location
    Græsted
    Posts
    127

    Default

    Hi Vinny.

    The probes are a couple of years old, but yet stable when not messing with the cables. No problems when messing around with the cables further away prom the Profilux.

    All my probe cables are lying loose, and not to close to any other cables to avoid interference.

    Its the BNC connections which is sensitive for small mechanical impacts, which results in unstable circuits.

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