Explanation of the main sources of errors of the two-dimensional measuring instrument!

Explanation of the main sources of errors of the two-dimensional measuring instrument! Published: 2019-12-23 Source: https://www.microaccuracy.com/ The second element measuring instrument is a precision measuring device that uses non-contact optical measurement. It is mainly for the size measurement of two-dimensional planes, but in the process of use It is easy to be affected by many factors and cause errors. The following Miaoji Technology will explain the main error sources of the two-dimensional measuring instrument! When using a two-dimensional measuring instrument, it is first to focus, take points, and finally calculate and process. These aspects and environmental factors are the main sources of error: 1. The reading comes from the ruler, which is the grating system, and the grating counting ruler will easily cause errors. 2. The focus alignment relies on the optical system, the focus and alignment errors caused by the changes in the light source lighting conditions, and the changes in the light lighting conditions will directly image the measured size, so ensure that the boundary points obtained are the product needs The detection boundary, in high-precision measurement, is a key factor leading to the increase of measurement uncertainty. 3. The error caused by the verticality of the two measuring axes of the worktable, the error caused by the microscope optical axis and the work table surface being not perpendicular; 4. The straightness and angular pendulum errors that exist when the worktable moves; 5. The temperature change The thermal expansion and contraction caused by the phenomenon will cause slight changes, which will affect the accuracy of the measurement, and the error caused by the temperature of the measurement room deviating from the reference temperature required by the calibration; the above are the main sources of the error of the two-dimensional measuring instrument, including hardware equipment There are also measurement errors caused by temperature and environmental factors. Therefore, the two-dimensional measuring instrument must be in a suitable environment and master the correct method of use, so as to better avoid the error situation. Domestic professional precision measuring equipment manufacturers can currently provide a variety of high-precision two-dimensional measuring instruments, one-button measuring instruments and other equipment!