Working principle of deformation measurement of electronic universal test machine (II)

The deformation measurement index parameters of the electronic universal tester include measurement range, display error, sensitivity, and resolution.

1. Measuring range - The range between the small size and size of the material or component that the test machine can measure through the measurement system.

2. Display value error - The difference between the measured value recorded or displayed by the sample deformation value and the actual value of the measured value is called the display value error of the test machine measurement system. The display error is inevitable, and its size is within a specific range or a specified range by a standard.

3. Test machine deformation measurement sensitivity - the displacement rate of the sensitivity indicator relative to the measured change. Sensitivity is a mark for measuring physical instruments. The more refined the sensitivity of the test machine measurement system, the higher the accuracy of the measurement result.

4. The resolution of the deformation measurement of the test machine refers to the measurable small accuracy of the measurement data of the test machine photoelectric encoder. The greater the resolution, the more accurate the measurement results.