Objective calibration table

Objective tables are those used in the reading of measurable characteristics, that is, that contain data that may be measured. See how to create an objective attribute calibration table:

1.To add a calibration table of this type, click on the arrow next to the

button and select the Objective option. For this type, then, fill in the following fields on the data screen that will be displayed:

Run: Enter the run of the calibration table. This field is automatically filled in by the system according to the record order, but it may be edited.

Attribute type: This field is automatically filled in by the system and indicates the calibration table type in question.

Round off: Enter the number of decimal places used for all values in the calibration table. This value should be based on the asset resolution.

Probability: Select the interval around the measurement result, with which it is expected to cover a large fraction of the distribution of values, which could reasonably be attributed to the magnitude subject to measurement. Example: for 95% coverage probability, 95% of measurements are expected to be within the uncertainty range of the asset. Definition of probability used in the expansion of the uncertainty (using Student).

Reading: Select the measurement system the reading will be based. Remember that this option is only valid for variable magnitudes:

▪Cycles in M.S. to calibrate: The standard displays the fixed reading and the measurement cycles carried out on the asset being calibrated.

▪Cycles in standard M.S.: The asset being calibrated contains the fixed measure and the cycles are performed in the standard.

Resolution: Enter the resolution, that is, the lowest reading that may be performed in the asset. Click on the button next to this field to apply the resolution value to all the table points. It is worth pointing out that the resolution may be a fraction of the asset indication. Example: a person measures a particular part with a device having a scale of 0.01 mm (assuming the measurement = 10.09 mm), and the possibility of estimating one or more unit of that measurement (for example, 10.094 mm).

Measurement unit: Select the measurement unit involved in calibrating the assets of this configuration.

Duplication #: Enter the number of readings cycles to be performed in the calibration of the assets in this configuration.

Schumacher duplication #: Enter the number of reading cycles required to evaluate the initial bias used in the Schumacher Frequency calculation. This field will only be displayed if, in the Calibration data, the Invariable magnitude has been selected and if the Schumacher frequency option is selected.

Display table on report: Check this field for the table in question to be displayed in the calibration reports.

Measuring range: Enter the range that indicates the measurement capacity of the asset. This field will only be displayed if selecting the Variable magnitude in the Calibration data.

Working range: Enter the range that indicates the measurement range that is actually used in the organization. This field will only be displayed if selecting the Variable magnitude in the Calibration data.

Nominal value: Enter the range that indicates the measurement range that is actually used in the organization. This field will only be displayed if selecting the Invariable magnitude in the Calibration data.

3.Save the record after filling in the fields above and also fill in the data in the other tabs.

4.Use the Variable tab to associate the additional variables that will be measured when calibrating the asset. Variables exert some influence over the calibration and, therefore, it is necessary to have them properly configured. To do that, click on the

button and fill in the following fields on the data screen that will open:

Variable: Select the desired variable. The variables available in this field are created in the SE Calibration component, through the Configuration

Variable menu.

Output: Select the output measurement unit of the variable. This field is automatically filled in by the system according to the unit selected in the input, but it may be edited. If the output measurement unit is different from the input measurement unit, it will be necessary for the respective unit conversions to be recorded in the system.

Variable type: Select the variable type being associated with the calibration table:

▪Constant: Select this option if the measurement is performed by a constant variable, that is, its value may not be edited. E.g.: Pi = 3.14.

▪Input based on point: Select this option if the measurement is performed by variables in different points of the same asset. Each point, then, will have its own variable.

▪Input based on reading: Select this option if more than one reading is made at the same point, that is, the measurement is performed several times, and can generate more than one distinct value, which will consequently generate a variable.

▪Manual input: Select this option if the variable value is entered manually, that is, the user will type in the value directly.

▪Automatic input: Select this option if the variable value is calculated by the system based on standard, table, and other data. Remember that this field will be disabled if the variable type is Input based on reading.

For automatic input, after saving the variable data, click on the button. The following screen will be displayed:

ii.

Fill in the following fields:

Standard: Select a measurement standard. The standard defines the uncertainty data.

Table: Select a created table.

Equation: Select an equation for the calculation. These are the system default equations.

Retrieve table data: Select this option for it to be possible to associate the related table data with the variable.

▪Retrieve point data: Select this option for it to be possible to associate the related point data with the variable. It will also be possible to select the Interpolate values if necessary option.

iii.

Save the record after filling in the fields above.

Use the Other equation tab to create the equations that will help the user to obtain the value of the readings and the uncertainty value in the sources of uncertainty. To add an additional equation, click on the

button and fill out the following fields on data screen that opens:

Sequence: Sequential number of the equation. This field is automatically filled in by the system.

Equation: Click on the

button to draft the equation formula. Remember that the system will make available as variables all those entered in the Variable tab, in addition to the auxiliary equations whose sequence is lower than the record in question. See more details of how to draft the equation in the Building an equation section.

6.The Calibration method will only be enabled if the Measurement data collection option is selected in the Calibration

Calibration data section. Use this tab to define how the calibration will be performed. For that, fill in the following fields:

▪Direct: Select this option for the measurement to be performed without the use of equations.

▪Indirect: Select this option for the user to build the equation that will be used in the measurement. In that case, enter an ID # in the Output field and click on the

button to elaborate the equation. The variables and other equations already created in their respective tabs will be used. See more details in the Building an equation section.

The Type B uncertainty tab will only be displayed if the Type B uncertainty option has been selected in the Calibration

Calibration data section. Click on the

button on this tab to associate the sources of uncertainty with the calibration table. Fill in the following fields on the data screen that will be displayed:

Block source of uncertainty in calibrations: Select this option so that the standard value defined in the Uncertainty value field cannot be edited.

▪Direct: It is only necessary to enter the estimated numerical value of the uncertainty.

▪Indirect: It is necessary to click on the

button and build the equation that will be used to obtain the uncertainty value. The variables and other equations already created in their respective tabs will be used, provided their type is Per point will be used. See more details in the Building an equation section.

▪Rectangular: It is characterized by presenting the same probability for all the values within the limits and zero outside them.

▪Triangular: It is characterized by presenting the maximum probability for the average value, decreasing linearly to zero in the limits and zero out of these.

Divisible factor: Enter the distribution value already defined. Only the Normal distribution type allows editing its value.

Sensitivity coefficient: Enter the coefficient that determines the correlation between variables in the measurement process.

8.Use the Process tab to associate the processes by which the associated assets will pass in the standard activity in question. These processes refer to the necessary adjustments to use the asset. To associate them, click on the

button and select the desired records.

9.The Acceptability criterion tab will only be displayed if the Control calibration result option is selected in the Calibration

Calibration data section. Use this tab to enter the acceptability criteria, that is, the ranges of values that determine whether the asset is in conditions to be used, needs adjustment, needs to be repaired, or whether it must be disposed of. The acceptability criteria may be obtained by national or international standards referring to the asset in question or, if they do not exist, it is possible to use the manufacturer's specifications provided in brochures, catalogs, or operation and maintenance manuals. Remember that if you choose an acceptability criterion with Absolute or % nominal value, it will only be possible to associate the criterion. If the criterion notation is % full-scale or there is a constant variable in the equation, it is also possible to define its values. Click on the buttons in this tab to add the acceptability criteria:

	Click on this button and select one of the following options: ▪New: Select this option to create a new acceptability criterion. See more details about this operation in the Configuring a new acceptability criterion section. ▪Associate: Select this option to select an acceptability criterion already created in the system.
	This button will be enabled after selecting an acceptability criterion that has a constant variable. Click on this button and, on the new screen, enter the lower and upper tolerance of the acceptable error margin.
	This button will become enabled after selecting an acceptance criterion with the % full-scale notation. Click on this button and, on the new screen, enter the full-scale value, that is, the error in relation to the equipment scale.
	Click on this button to edit the data of the selected acceptability criterion. This button will only be enabled for the acceptance criteria created in the Acceptance criteria tab. The associated criteria may not be edited in this section.
	Click on this button to delete an acceptability criterion.

10.Use the Extra calculation tab to enter the extra equations. The objective of these equations is to present the asset condition, that is, if it needs to be adjusted, fixed, or even disposed of. To do that, click on the

button and fill in the following fields on data screen that opens:

Sequence: Sequential number of the extra calculation. This field is automatically filled in by the system.

Equation: Select the

button to draft the extra calculation equation formula. See more details in the Building an equation section.

11.Use the Point tab to add the points related to the calibration table. Click on the

button to add a calibration point in the table in question:

i.	Fill in the following fields on the data screen that will be displayed: ▪Sequence: Sequential number of the calibration point. This field is automatically filled in by the system. ▪Calibration point: Enter a name for the calibration point. ▪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 indication. ▪Measurement unit: Measurement unit of the calibration point. This field is automatically filled in by the system as defined in the selected table.
ii.	The Acceptability criterion tab 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. This tab will only be displayed if the Control calibration result option is selected in the Calibration data section.
iii.	The Type B uncertainty tab displays the type B uncertainty records that will be used in the calibration point, according to the table selected previously. Then, all type B uncertainties associated with the calibration table will be available for the point in question for the data to be edited, as needed.
iv.	Use the Comments tab to enter the general comments about the calibration point.
v.	Save the record after filling in the fields above.