A brief discussion on the working principle of thin film coating thickness gauge
Precise measurement and control of thin film coating thickness gauge saves enterprises a lot of manual inspection costs
Introduction: Optical coating technology: For light-transmitting materials, when the material is certain, the transmittance and the measured thickness have a one-to-one correspondence. The thickness of the material can be measured by measuring the optical transmittance (optical density) of the material. For this purpose, this measurement technology is now very mature and is often used in the roll-type coating industry to detect the thickness of aluminized films, packaging films and other films, not just thin films, as long as they are light-transmissive materials. You can monitor the light transmittance through the precision spectrum measurement and control thin film coating online thickness measurement system to monitor the quality of the product. The test points of this precision measurement and control thin film coating online thickness measurement system can be customized.
The Precision Spectrum Measurement and Control Thin Film Coating Thickness Gauge is a near-infrared photoelectric analysis instrument that uses a fixed near-infrared wavelength to test the moisture content of different products. It is an integrated instrument. All components necessary for continuous monitoring are placed in the instrument. Depending on the wavelength, it can Test the coating thickness of two components (e.g. water glue and oil glue) simultaneously.
Working Principle of Precision Spectrum Measurement and Control Thin Film Coating Thickness Gauge
The O-H bonds of water molecules absorb near-infrared radiation at several specific wavelengths. Precision spectrum measurement and control The three filters on the rotating filter disk in the precision spectrum measurement and control tester produce these absorption wavelengths and non-absorption wavelengths, which are alternately reflected from the product surface to the internal optical components. The electronic pulses converted from the optical signals pass through a ratio The algorithm calculates a proportional moisture content, which is then corrected for offset and span to become a direct moisture content. The specially designed filtered reflection signal algorithm eliminates deviations caused by aging of optical components and different material reflection characteristics.
The precision measurement and control film coating thickness gauge has the advantages of high measurement accuracy, convenient operation, and fast measurement speed. Its automatic detection system can greatly improve the quality and production efficiency of coated products. The automated measurement process and measurement results are saved in the form of data, which is conducive to product quality control, optimizing coated product parameters, reducing waste, and saving production costs. . It is an essential online testing instrument for manufacturers.
