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Thread: hysteresis

  1. #1
    Join Date
    17.01.2021
    Posts
    2

    Default hysteresis

    hey guys.
    im setting a controlled doser to run a kalk wasser dosing.
    i followed the guide, an i have been running som test just with rodi water.
    i set the hysteresis as the guide nominal val 8,2, hysteresis 0,3

    i am not sure about the hysteresis, i want it to shot off when i hits 8,4


    what should i set it at?

  2. #2
    Join Date
    09.11.2017
    Posts
    1,476

    Default

    This is described in the programming guide.

    See example:
    Example using a pH sensor
    Nominal value = 7.0 and Hysteresis = 0.4
    The down-regulation-socket switches on at 7.2 and off again at 7.0, the upregulation-socket switches on at 6.8 and off again at 7.0.
    It can be seen that the control oscillates by 7.1 or 6.9 and not exactly by the
    adjusted nominal value (7.0). This is necessary to allow simultaneous use of upand down-regulation.
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