Analyzer Component Values Below Minimum or Above Maximum
This analysis rule includes the analyzer elements component data with a value below the indicated minimum or above the indicated maximum. For processes that are in service, measurements outside the normal range can be the result of analyzer error or a data communication error.
Any in-service analyzer measurement with a value below the indicated minimum or above the indicated maximum is reported to the Case log, which you can view in the Log tab of the Case Properties window. The output contains a list of analyzer in violation, and a description of the violation.
The following table lists a sample log output for this analysis.
Sample Log
| Time | Severity | Element | Attribute | Message |
|---|---|---|---|---|
| 9/25/2005 13:22 | ...REPORTING analyzer components a value below the indicated minimum or above the indicated maximum.- | |||
| 9/25/2005 13:22 | Error | AnalyzerA | ComponentData | Component(s) with value > Maximum: C3 |
| 9/25/2005 13:22 | Error | AnalyzerB | ComponentData | Component(s) with value < Minimum: C2 |
Analysis Method
- Collect a list of all Analyzer elements in the current Case that satisfy the following criteria:
- Status Attribute value is IS (In Service).
- Determine the analyzer components with a value below the minimum or above the maximum.
- Write to the log section of the case. Report the test name. Report the list of offending analyzers, ordered by name and cause of violation.
Configuration Using the Wizard
The configuration of the Analyzers with components having a value below the minimum or above the maximum is a selection of the General Gross Error Analysis Rule. You open the window for configuring the test (shown in the following figure) from the General Gross Error Analysis Rule Wizard.
Open the Gross Error Configuration window as described in Configuring - General Gross Error Analysis Rule.
On the Analyzers tab, select Analyzers with components a value below the minimum or above the maximum.
An Analyzers with zero measurement / tolerance - Attributes window opens.
Select the Attributes according to the following table:
Attributes
Selections Description Component Data Component Data table attribute. The default is set to 'ComponentData'. Status Analyzer in/out of service status. The default is to 'ObjectStatus'. Click OK to finish the configuration.
The text "CONFIGURED" displays next to the 'Analyzers with components a value below the minimum or above the maximum' selection.
To run this test, see Running the General Gross Error Analysis.