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The Cornerstone History files retain the maintenance life
story of the instruments in the database. Service History records are created
and stored for configuration changes, switch tests, zero and span test and
calibration, 4-20mA test and calibration, and optional
service notes entered during any maintenance activity. The display contents of
the History window can be changed to include all or only a single type of the
service histories. Based on that choice, the summary area is filled with
additional information to assist you in the selection of the desired individual
record. The summary area may also be used to display a graph of the historical
trend for maximum error, linearity, hysteresis, zero error or span error.
Once a record is selected, detailed data for that record is
displayed. Controls are provided that make it
easy for you to move forward or backward through the dated chain of records.
The modified parameters in configuration records are highlighted for quick
determination of the changes from one date to the next. Test and calibration
records present "as found" and "as left" data in either graphical or tabular
display format. Service notes are presented in a text area for editing and
review. Once reviewed, the notes may no longer be modified. Supervisory review
of history records may only be accomplished through the History window. The
History window functions are an integral component in Cornerstone's support for
user compliance with ISO 9000 quality guidelines.
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Click here for a screen picture of a zero & span
calibration graph
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Base Station History Record Types
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Click here to see how you can review the record of a
past instrument configuration change
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Historical Calibration Data
 | Date/time |
| Service Reason |
| Technician |
| Review Status & Reviewer |
| Equipment Used |
| Actions Taken |
| Results - Error Calculations |
| As Found / As Left Test Point Data |
Calibration Review
| By Supervisor |
| Records Name of Reviewer |
| Approve or Disapprove |
Historical Summary Data
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Click here to see an example Historical Summary display
of max error for Zero & Span calibrations
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Detail Data Display/Print
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Click here to see a detailed record of a zero and span
calibration
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Other History Features
| Service Notes are text notes about a service event,
or may be specified independent of any other service action |
| History records can be deleted with sufficient security
level |
| Summary lists show all services performed for each instrument.
Select individual service records from the list |
| Select instrument directly by tag or ID or choose from a
filtered list |
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