Calibration
9190A Input Panel Calibration 4
4-25
1. Locate the results of the 4-20mA Accuracy Tests.
2. Use the calculated errors and the previous (current) offset values and calculate the
new offset values for each 4-20mA accuracy parameter with the formulas below:
MAC4
new
= MAC4
previous
– error4mA
MAC22
new
= MAC22
previous
– (0.915 x error12mA) – (0.5 x error22mA)
3. Enter the new offset values into the instrument.
4. Let the readout stabilize for 20 seconds after the new offset values are entered before
a measurement is made.
5. Take As Left data with the 4-20 mA Accuracy Test and the 24 V Source Test.
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