How to calibrate the coating thickness gauge system
The coating thickness gauge has instrument calibration before each use, but the measurement data is still inaccurate? Generally speaking, customers use a thickness gauge to randomly calibrate the substrate, which requires that the material of their own product substrate and the random substrate be exactly the same. This situation is basically impossible, and we need to emphasize that customers must choose an uncoated workpiece that is the same as their measured product for zero point calibration, and then use calibration and plastic film on it for calibration, so that the measurement data is reliable. The methods and types of calibration, system calibration, zero calibration, and two other calibration points have actually been written in the manual. Users only need to read carefully. It should be noted that when calibrating the iron base, multiple measurements should be taken to prevent erroneous operations; The samples for system calibration should be carried out in ascending order. Be sure to use a calibration matrix of the same shape, material, and roughness for zero calibration.
Will there still be any issues with the tested coating thickness gauge during actual use? When calibrating a coating thickness gauge, generally speaking, the calibrator has an accurate set of calibration plates to verify the coating thickness gauge. Whether the coating thickness gauge calibration is qualified or not, many customers do not externally calibrate the previously used calibration plate instrument (usually plastic thin sheets) during calibration. In actual use, we only use accurate calibration plates. This way, instrument calibration is meaningful because the calibration plates are plastic sheets, which are prone to wear and tear. It is recommended to replace them with a standard plate that has passed national verification around 2 years.
