Emerson 3308A Rosemount 3308 Series, Reference Manual

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Reference Manual
00809-0100-4308, Rev BA
Section 4: Configuration
December 2014
Configuration
4.7 Verify Level
Run the Verify Level tool to match the product level reported by the device to a reference
measurement (measured by using for example handgauging). If any difference, the Calibration
Offset parameter will be adjusted as shown in
Figure 4-15 .
A minor adjustment using Calibration Offset is normal. There may, for example be a deviation
between the actual tank height and the configured value.
Non-metallic (e.g. plastic) vessels and installation geometry may introduce an offset for the
Upper Reference Point. This offset may be up to ± 2 in. (50 mm). The offset can be compensated
for using Calibration Offset.
Note
Before running Verify Level, make sure that; the product surface is calm, the tank is not being
filled or emptied, and the actual level is well above the probe end.
To run Verify Level, do the following:
1. From the Home screen, select Configure .
2. Go to Guided Setup > Initial Setup .
3. Click Verify Level to check your level measurement, and follow the instructions.
Figure 4-15. Calibration Offset
Reported level
Actual level
Positive Calibration
Offset value
Negative Calibration
Offset value