Recording of Single Values 

Use

When you record single values, you can process the following types of results:

Features

Number of Defects

For an attributive single value recording based on the number of defects, enter the number of defects for each unit to be inspected in the Defect number column of the Single Values screen area. The system updates the values in the fields Inspected, Number of defects and Nonconforming.

For each inspection characteristic defined in the task list, you define how much the inspected sample size (in the Inspected field) can deviate from the predefined sample size (in the Inspect field). When you close the inspection characteristic or the partial sample, the system checks whether the conditions for adhering to the sample size have been met.

Number of Nonconforming Units

For an attributive single value recording based on to the number of defects, enter the valuation (acceptance or rejection) for each unit to be inspected in the Valuation column of the Single Values screen area. If necessary, you must also enter a defect class when a unit is rejected.
The system updates the values in the fields for Inspected and Nonconforming.

For each inspection characteristic defined in the task list, you define how much the inspected sample size (in the Inspected field) can deviate from the predefined sample size (in the Inspect field). When you close the inspection characteristic or the partial sample, the system checks whether the conditions for adhering to the sample size have been met.

Coded Characteristic Attributes for Single Units

You can confirm coded characteristic attributes for a single unit if you have assigned a selected set to the characteristic in the inspection plan.

You can enter the attribute codes directly. The valuation of the single unit and the defect class are copied from the code.

Measured Values

You enter the measured values for the unit to be inspected during measured value recording. The system valuates the measured values that lie within the tolerance range by entering an A (accepted) in the Val column. The tolerance range is limited by an upper and lower specification limit (screen section Specifications). Measured values that lie outside the tolerance range are rejected. If a measured value is rejected (R), the system enters the defect class of the code predefined in the task list in the Defects Class column. If no defect code is available, the system copies the defect class from the plant settings defined in Customizing for Quality Management at plant level.
After a measured value is entered, the system updates the data in the fields Inspected, Nonconforming, No.above, No.below, and x-bar.

If no confirmation of measured values has been planned for an inspection characteristic with a single-sided or double-sided tolerance range, you only confirm the valuation (OK / not OK) for each single unit. After the valuation is entered for each single unit, the system updates the values in the fields Inspected and Nonconforming.

Calculating Statistical Moments

To calculate additional statistics such as the standard deviation and the maximum and minimum valid measured values, choose Extras ® Statistics ® Calculate statistical moments.

The characteristic detail screen appears on which the calculated statistics are displayed in the Results screen area. This function is carried out automatically when you valuate or close a characteristic or a partial sample.

Offset and Factor

To simplify the data entry for measured values recording, you can define the additive offset constant using the Possible entries help.

A dialog box appears in which you enter the values for the offset and factor. You can enter the factor value to the power of ten. If you enter a * in the Offset field, the system places the target value of the characteristic in the field.

The purpose of the offset and factor is to simplify the entry of data. For example, if you want to confirm the measured values 200.345 and 200.299, it is advisable to enter the value 200 as the offset value and confirm the measured values 0.345 and 0.299.
This position and scale conversion only affects the presentation of the characteristic values on screen. The system saves and processes the absolute values internally.

Activities

You record single values in the Single Values screen area of the characteristic single screen. You can record single values on the characteristic overview screen during results recording for units to be inspected. After you have entered the values for a single unit in the Measured value column, choose Continue. The system updates the data in the fields for Inspected and Nonconforming. The system always displays the values recorded most recently in the single values list.

You can only delete single values for a unit to be inspected on the characteristic single screen.

You can only delete single values as long as you have not saved the values and they have not been written to the database. You can mark single values that you can no longer delete as invalid using Attribute.

Important Columns for Recording Single Values

The following two columns are important for each form of single-value recording:

Column

Meaning

Comment

Attribute

You can indicate a single value as invalid (/). In this case, you must record an additional single value in order to meet the required sample size.

The system calculates statistics, such as the mean and standard deviation, from the valid single results only.

Number of unit to be inspected

You can externally number a unit to be inspected. In this way, you can assign individual inspection results to a specific unit to be inspected.

For example, in the task list header you define whether external numbering is mandatory, optional, or explicit.

If you use serial numbers that exist in the system as master records, you define the numbering on the basis of the serial number profile (in the material master for materials requiring serial numbers) and the indicator for single unit inspection (in the inspection setup of the material master).

See also:

Results Recording for Units to be Inspected