In the context of a condition monitoring program, what is repeatability?

Repeatability, in the context of a condition monitoring program, refers specifically to the ability to perform a test in exactly the same way every time. This consistency ensures that the results of the test are reliable and can be trusted for analysis or comparison over time. When measurements are taken under the same conditions—such as equipment settings, operator skills, environmental factors, and test procedures—the variability in the measurements will be minimized. This is crucial for tracking changes in machine conditions accurately over time.

While being able to test machines in the same order and performing measurements quickly have their own significance in a condition monitoring program, they do not directly contribute to the concept of repeatability. Ensuring that tests are conducted in an identical manner each time is the fundamental aspect that enables repeatability, thus providing valuable data that reflects actual changes in machine condition rather than differences caused by testing inconsistencies.