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    How to calibrate a leveltrol for an interface level measurement?

    Question: How to calibrate a leveltrol for an interface level measurement?

     Answer:

    Fill the leveltrol chamber 100% with the lower density liquid and adjust its zero for 4.00mA output.

    Drain the liquid and fill the leveltrol chamber 100% with the higher density liquid and adjust its span for 20.00 mA output.

     

    The transmitter on line measures the percentage of higher density liquid in the lower density liquid at a known height.

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