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Reference Manual
00809-0100-4832, Rev AA
October 2004
4-3
Rosemount 3095FC
22. When the Live Reading is stable, click Set Mid 3 to calibrate the
reading. The display returns to the Meter Calibration window.
23. When the calibration for a selected point is complete, another input
can be calibrated or complete the calibration. If calibration is
complete return the device to service.
NOTE
Do NOT close the by-pass valve on the valve manifold until after process
pressure has been reapplied, to protect the sensor module. This keeps one
side of the differential sensor from being subjected to high pressure while the
other side has no pressure applied. See Figure 4-2.
Figure 4-2. Returning the
Sensor Module to Service
NOTE:
If calibrating the DP input, refer to “Zero Shift” on page 4-5 before completing
the last step.
24. Finally, click Done to cause the calibration window to close, cancel
freeze values (unfrozen), and enable live readings for use in the flow
calculations. The Event Log records all calibration settings that were
changed.
Analog Input (AI)
Calibration
Select Utilities > AI Calibration Value to view the calibration values for a
specific Analog Input point.
NOTE
Deadweight calibration may be performed from the Calibration tab in the AI
Configuration screen. The Calibration Freeze Value field displays the value
received from the AI when the Update button was last pressed.
Use the drop-down list box to select the AI Point to be viewed. The Tag for
that point displays. Not all of the following parameters apply to each point.
• Raw Value #1 to 5 - Raw Value 1 is the lowest calibrated Raw A/D
input, Raw Value 5 is the highest calibrated Raw A/D input.
• EU Value #1 to 5 - The five calibration settings in Engineering Units
Values, converted from the Raw Values, based on the Low Reading EU
and High Reading EU defined for the point. EU Value 1 is the Zero
value, EU Value 5 is the Span value, and the rest are Midpoint values.
Shutdown Sequence
2
3
4
1b
1a
Pre-Startup