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    How to calibrate a static head level transmitter for an interface measurement?

    Question: How to calibrate a static head level transmitter for an interface measurement?

    Answer:

    Static head level transmitter is not commonly used for measuring the interface level. But the following procedure may be used for calibrating it to measure the interface level in a tank.

    Fill the vessel 100% with the lower density liquid and adjusts its zero for 4.00 mA output. Drain the liquid and fill with the vessel 100% with the higher density liquid and adjust its span for 20.00mA output. 100% transmitter level is to be continuously maintained.

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

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