Tecfluid Converter XL1, Инструкция по эксплуатации

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To correct the offset, the flow rate in the installation should be zero, that is, the liquid inside
the pipe where the flowmeter is installed must be completely stopped. In addition, it must be
ensured that the pipe is completely full of liquid so that this adjustment become effective.
Under these conditions, the flow measured by the instrument will appear in the "Measured
flow" box. If this flow has an important zero drift, the text "Very high offset" will appear.
To correct the offset, press the button "Correct".
From this moment, the box "Measured flow" should indicate a value close to zero. The offset
is already corrected. To conclude, close the window.
7.8 Datalogger
The adjustment is made by accessing to “Offset” menu. The following window will appear: