Elcon SA10A - Calibration of Resistance Measurement Input Ir

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Rev 1 2018-03-21 www.elcon.se
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7.3.5 CALIBRATION OF RESISTANCE MEASUREMENT INPUT IR.
Calibration of the current for resistance measurement is done by using the input Ur as a voltage reference instrument
and a current shunt as a reference resistor.
To open window Calibration SA10A see 7.3 Recalibration procedure.
Click tab Resistance in window Calibration SA10A.
Click command button
Calibration wizard.
The following dialogue box is displayed.
• Calibration wizard. Step 1.
Select input “Ir” for calibration of source current at resistance measurement.
Note!
Calibration of voltage measuring input Ur must be
done before the calibration of the current measuring
Ir.
Input Ur is used as a reference instrument when the
current Ir is calibrated.
Click the command button. Next.
• Calibration wizard. Step 2.
Connect a reference resistance shunt with value 100 -
500 µohm to the Ir 200A current output on the
SA10A.
Connect the voltage measurement cables to input Ur.
For more information about connections see.
6.2.4 Check resistance measuring inputs Ur, Ir.
The measurement shall be done with the “4-terminal”principal.
Click the command button. Next to execute a measurement.