3.0 Measurement Systems Analysis 3.1 Quality Measurement System The quality of a measurement system is usually determined solely by the statistical properties of the data it produces over time. (AIAG, 2010) The following are fundamental properties that will define a good measurement system: 3.1.1 Adequate discrimination and sensitivity is fundamental. Increments of measure should be small relative the process variation or specification limits, whichever is smaller. (AIAG, 2010) 3.1.2 A good rule of thumb is the 10-to-1 rule; the instrument discrimination should be at least one tenth of the specification limits (or process variation) which would be the tolerances stated in the GD&T 3.1.3 For product control, variability of the measurement system must be small compared to the specification limits. The measurement system should be assessed to the feature tolerances as stated in the GD&T (AIAG, 2010) 3.1.4 For process control, the variability of the measurement system should have a smaller effective resolution when compared to manufacturing process variation. The measurement system should be assessed to the 6-sigma process variation and/or Total Variation from the MSA study (AIAG, 2010).
3.0 Measurement Systems Analysis <br> 3.1 Quality Measurement System <br>The quality of a measurement system is usually determined solely by the statistical properties of the data it produces over time. (AIAG, 2010) The following are fundamental properties that will define a good measurement system: <br>3.1.1 Adequate discrimination and sensitivity is fundamental. Increments of measure should be small relative the process variation or specification limits, whichever is smaller. (AIAG, 2010) <br>3.1.2 A good rule of thumb is the 10-to-1 rule; the instrument discrimination should be at least one tenth of the specification limits (or process variation) which would be the tolerances stated in the GD&T <br>3.1.3 For product control, variability of the measurement system must be small <br>compared to the specification limits. The measurement system should be assessed to the feature tolerances as stated in the GD&T (AIAG, 2010) <br>3.1.4 For process control, the variability of the measurement system should have a smaller effective resolution when compared to manufacturing process variation. The measurement system should be assessed to the 6-sigma process variation and/or Total Variation from the MSA study (AIAG, 2010).
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