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Calibration

This section will be displayed only if the "Calibration activity" control has been checked in the Activity data section. Use it to configure the details of the calibration to be performed in the execution of the activity in question.

Use this section to configure the details of the calibration to be performed in the execution of the activity in question.

Calibration data

Magnitude: The magnitude is associated with the scale type the asset presents. For assets with a reading range (E.g.: Calipers), select their magnitude as Variable. For assets with no reading range, such as embodied magnitudes (E.g.: Standard blocks), select their magnitude as Invariable.

Control calibration measurements: By unchecking this option, the calibration will be created, but it will not display result options (approved, rejected, and conditionally approved). Moreover, if it is not controlled, the generated calibration will forcibly occur through measurement data collections, and the calibration tables/points will have no acceptability criteria. The no result-generation resource applies to calibration laboratories whose objective is to calibrate and report uncertainties and gage errors. The contractor will be responsible for generating the gage approval.

Schumacher frequency: Select this option for the system to collect pre-calibration information (prior to any adjustment) to evaluate the calibration frequency. This field will be disabled if the Control calibration measurements field is unchecked.

Measurement data collection: Select this option to demonstrate that the calibration reading will be stored for the configuration in question. Otherwise, the system will only keep the calibration record, without its actual data. Nevertheless, when this option is selected, the will system will keep all calibration data, including the data readings performed throughout the whole process. In this case, it will also be possible to control the calibration result. Measurement data collection is often used for internal calibrations. In the case of third-party calibrations, labs hardly ever share measurements results.

Type B uncertainty: Type B uncertainties are based on non-statistical means, i.e., they are based on: data from previous measurements, manufacturer specifications, usage experience, and verification of the asset's behavior with time and data provided in calibration certificates. Select this option to indicate that the measurement data collection of the configuration in question will use a type B uncertainty. By adding a table for this asset type, the Type B uncertainty tab will be displayed to associate the uncertainty source value.

Decimal duplication #: Enter the number of necessary reading cycles to evaluate the initial bias used in the Schumacher Frequency calculation. This field must be filled in when the Schumacher frequency option is selected.

Input results: Select this option for the calibration results to be entered directly into the system. For the results to be entered via a Table and/or Point, select the options and then their respective tabs will be displayed. This field will be disabled if the Control calibration measurements field is unchecked.

Incomplete record: This alert will be displayed while some information necessary to perform the calibration has not been entered.

Table

Click on the button on this tab to associate calibrations tables, i.e., the scales the asset has. Choose one of the following options:

▪Objective: By selecting this option, a screen will display. Enter the required data and save the record.

▪Subjective: Subjective tables are those used in the reading of non-measurable characteristics. Enter the required data and save the record.

Point

Use this tab to add the points related to the calibration table. See how to create the record:

1.In the Calibration table field, select the table to which the points will be associated. Remember that only objective tables will be available.

2.After that, click on the button on the side toolbar.

3.Fill in the following fields on the data screen that will open up:

▪Sequence: Sequential number of the calibration point. This field is automatically filled by the system.

▪Calibration point: Enter a name for the calibration point.

▪Nr. Decimal places: Enter the number of decimal places that will be used in the measurement of the calibration point.

▪Nominal value: Enter the expected value for the calibration point.

▪Resolution: Enter the lowest reading that may be performed in the asset. Remember that the resolution may be a fraction of the asset's indication.

▪Measurement unit: Measurement unit of the calibration point. This field is automatically filled in by the system as defined in the selected table.

4.Save the record and fill out the data on the following tab:

Acceptability criterion

This tab will only be displayed if the "Control calibration result" option is selected on the "Calibration data" screen. It displays the acceptability criteria that will be used in the calibration point, according to the table selected previously. Click on the button to enter the values of the criteria that will use the constants and/or the button to enter the values of the criteria configured to have % full scale.

Type B uncertainty

This tab displays the type B uncertainty records that will be used in the calibration point, according to the previously selected table. Therefore, all type B uncertainties associated with the calibration table will be available for the point in question so that the data may be edited, as needed.

Specific buttons:

Standard

Use this tab to select the gages that will be used as standards in the calibrations. To do that, select a standard activity that has been used as calibration plan of the assets that will be used as standards. All the assets that have been calibrated by the selected activity will be displayed as a standard option in the calibration execution - which, by its turn, must use the standard activity in question.