Ronan X96S LEVEL GAGE - Manual (Page 38)

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Calibration
Calibration correlates the X96S's output to your actual process level. It instructs the microprocessor to read and store the detector
counts for a low and high level of process. Once the system is conditioned to recognize the low and high level, it will provide a
4-20 mA output over the entire range of interest.
Reference Modes
One of your first tasks will be to calibrate the system. The first step in the calibration procedure is to "reference" the gage on
some known level. The steps involved in the referencing procedure will vary slightly depending upon the mode selected as the
constant.
One of these three REFERENCE MODES will be active on your system:
• Referencing EMPTY (Level = 0)
• Referencing with PROCESS at known level
• Referencing with ABSORBER
Calibration
Low Reference
Depending on the Reference Mode selected, you must set up the radiation path in the vessel to the Reference condition (vessel is
EMPTY, PROCESS is at a known low level, or the proper ABSORBER is in place). If ABSORBER or PROCESS is selected,
you will need to supply the actual level represented. If you selected EMPTY, the system will automatically supply a level value
of 0 for you.
High Calibration
Again, depending on the Reference Mode selected, you must set up the radiation path in the vessel to the Calibration condition.
You will also need to supply the actual level being set up.
Preparation for Calibration
Documentation
For future reference, document these items:
(a) Environmental/process conditions that influence the reference/ calibration. The next time a calibration is performed, you will
need to duplicate the conditions, or account for the differences.
(b) All changes made to factory-default settings such as time constant, reference constants, gain, etc.
(c) The information from the status displays. A record of "counts" being received from the detector may assist with future
troubleshooting efforts.