Film thickness measuring instrument is a device used to measure the thickness of film, usually used in the research and production of semiconductor, coating, ceramics, nanomaterials and other fields. Here are some key points and considerations when choosing a Film Thickness Gauge:
1. Measuring range: When choosing a film thickness measuring instrument, the instrument should be selected according to the film thickness range to be measured. Generally, the measurement range of the instrument should be able to meet the application requirements, and at the same time, do not over-purchase a measurement range higher than the requirement, so as to avoid unnecessary cost waste.
2. Measurement accuracy: Accuracy is an important index to measure the performance of the film thickness measuring instrument. When selecting a film thickness measuring instrument, an instrument with sufficient high precision should be selected to ensure the reliability and accuracy of the measurement results.
3. Measuring principle: The measuring principle of film thickness measuring instrument is usually divided into many kinds, such as X-ray diffraction, white light interference, atomic force microscope, Raman spectrum, etc. When selecting an instrument, the appropriate measurement principle should be selected according to the application requirements.
4. Thin film type: Different types of thin films have different requirements for the selection of measurement principles and instruments. For example, X-ray diffraction technique is suitable for thin film measurement of various materials, while white light interferometry is suitable for measurement of transparent thin film.
5. Use environment: Film thickness measuring instrument is usually used in different environments, such as in laboratory, workshop, field or outdoors. Therefore, when choosing a film thickness measuring instrument, the use environment should be considered to choose a suitable model.
Precautions
1. When using the film thickness measuring instrument, the instruction manual should be followed, and calibration and maintenance should be carried out according to the requirements.
2. Before measuring, the measuring surface should be cleaned to ensure the measurement accuracy.
3. When using the film thickness measuring instrument in different environments, you should pay attention to the influence of temperature and humidity on the measurement, and make corrections.
4. For different types of film thickness measuring instruments, appropriate calibration should be selected.
