Measurement Systems Analysis

Evaluate a Continuous Measurement Process Using the EMP Method

The Measurement Systems Analysis (MSA) platform assesses the precision, consistency, and bias of a measurement system. Before you can study the process itself, you need to make sure that you can accurately and precisely measure the process. If most of the variation that you see comes from the measuring process itself, then you are not reliably learning about the process. Use MSA to find out how your measurement system is performing.

This chapter covers the EMP method. The Gauge R&R method is described in Variability Gauge Charts.

Figure 4.1 Example of a Measurement System Analysis 

Contents

Overview of Measurement Systems Analysis

Example of Measurement Systems Analysis

Launch the Measurement Systems Analysis Platform

Data Format

Measurement Systems Analysis Platform Options

Average Chart

Range Chart or Standard Deviation Chart

EMP Results

Effective Resolution

Shift Detection Profiler

Bias Comparison

Test-Retest Error Comparison

Additional Example of Measurement Systems Analysis

Statistical Details for Measurement Systems Analysis

Computation of Intraclass Correlation and Probable Error