What is MSA? Measurement System Analysis

Basics of Measurement System Analysis:

Terminologies used in Measurement System Analysis:

→ The full name is a Measurement System Analysis.→ A measurement system measures the quantification (data, number, or reading) of particular characteristics of any object. It also includes a combination of gages, fixtures, software, and personnel required to measure the characteristics of any object.→ For better understanding, we are taking an example if we want to measure the weight of the product then the combination of operator, weighing scale, and our product is the whole measurement system.→ Let us take another example if the weight of the product is automatically measured on a conveyer belt and recording in software in this example measurement system includes the product, software, and conveyer.→ MSA is athat is used to determine if this system is capable or not?→ In our daily life, we are using more and more data for analysis so data has more value, and day by day it is increasing.→ This data use for decision making. If the collected data has an error due to measurement system error then there may be a chance of wrong decision making.→ To avoid this problem MSA can help us to build a strong system for our data-based decision-making process.→ We useto judge the dimensional quality of Incoming, In-Process, and Finished Production parts.→ These gauges and instruments have to be Precise and Accurate to give results of a higher confidence level.→ To build this confidence, we have to calibrate these gauges/instruments periodically to achieve Accuracy and Precision.➨ The sources ofare due to the below factors:⇢ Process⇢ Personnel⇢ Tools, Equipment, Gauges, Instrument, Fixtures, etc.⇢ Product to be measured⇢ Environmental (e.g. temperature, humidity, etc.)➨ Below measuring instrument has a definite numerical scale to measure the numerical dimensions of the component.→ E.g., Vernier, Micrometer, Dial indicator, Height Gauges…..→ Vernier : Range: 0 – 200 mm L.C: 0.02mm; 0.01mm→ Micrometer : Range: 0 -25; 25 – 50 L.C: 0.01mm; 0.001mm→ "" is the ability to detect small changes.→ "" is the smallest amount of difference in a quantity that will change an instrument's reading.→ E.g. a measuring tape have a resolution, but not sensitivity and an analytical balance have both resolution and sensitivity➨ While selecting equipment, the following basic points need to be considered:⇢ Range,⇢ Least Count,⇢ Accuracy and other relevant factors shall be considered.➨ If we have a tolerance of 0.100 of a component, we should use the instrument with a Least Count of 0.010 mm. (which means the least count of the instrument should be 1/10th the tolerance range.)→ There are certain terminologies that should be understood for better use of Gauges and Instruments which is mentioned below