Calibration cycle of paint thickness gauge
The paint film thickness gauge is widely used in production inspection, quality control, and quality supervision inspection in industries such as manufacturing, metal processing, and chemical industry. With the increasing demand for measuring and controlling the thickness of coatings and decorative coatings formed on the surface of industrial products, the development of measurement technologies and instruments for the thickness of coatings such as coatings, plating layers, coatings, stickers, and chemically generated films is also accelerating. The measurement of paint film thickness has become an important part of surface engineering quality control testing for industrial products
The validity period of the instrument after verification by the national metrology department is one year, but the paint film thickness gauge is different from many length measuring instruments. Most length measuring instruments can be used directly after passing the calibration without the need for constant calibration. However, due to the influence of factors such as substrate material and roughness, it is necessary to calibrate the paint film thickness gauge before each use in practical use. If this is not done, there will be a 3-10% error in the measurement results after long-term use. If the measurement value is relatively large, it may not be obvious. As soon as the measurement value is small, problems will arise. For example, if the thickness of the customer's product sprayed is 60um (assuming the actual value is also 60um), our measurement value is 40um. In this way, the error becomes 20um, and the measurement result has a large deviation from the actual value, exceeding the allowable range.
Usage and precautions of thickness gauge
A thickness gauge is an instrument used to measure the thickness of materials and objects. It is commonly used in industrial production to continuously or randomly measure the thickness of products (such as steel plates, steel strips, films, paper, metal foils, etc.). There are radioactive thickness gauges in this type of instrument that utilize the penetration characteristics of alpha rays, beta rays, and gamma rays; There is a sound wave thickness gauge that utilizes changes in sound wave frequency; There is an eddy current thickness gauge that utilizes the principle of eddy current; There are also thickness gauges that utilize the principle of mechanical contact measurement.
