There are many ways to evaluate an IEPE (Integrated Electronic PiezoElectric) sensor, or accelerometer, either on its own merits or in comparison to similar competitive models found on the market. The most obvious is a paper comparison, using the spec sheet as a guide. Other options include acquiring the contending sensors and putting them to the test or obtaining word-of-mouth inputs, each of which will likely result in a different conclusion. The most common starting point, however, is a spec sheet appraisal.