Coating thickness plays an important and vital role in product quality, process control and cost control as the measurement of the film thickness can be done using many different types of instruments. For such instruments understanding the equipment is essential as which one is available for film thickness measurement and also the utilization of these instruments are very much useful for these coating operations. Various issues which determine the method for these coating measurement also includes the type of coating, substrate material and the thickness range of coating. The common techniques used for cured organic films include non destructive dry film method such as magnetic, eddy current, ultrasonic and micrometer measurement and destructive methods such as cross sectioning or mass measurement.The coating thickness tester is very much referred as ball carter equipment which depend highly on the manufacturer and also these coating thickness are very much quick and inexpensive method which are used for measuring thin film coating thickness. A rotating hardened steel sphere with a measured diameter is pressed on to the surface of a coated piece or an actual coated component where diamond paste is applied to the sphere as it rotates the carter which is then abraded through coating to the substrate. The features of this tester includes easy to use the menu system and this tester is very much equipped with two measuring modes which are called as single and continuous and the other two working models include direct and group. The tester is well furnished with user programmable high or low alarms.
These coating thickness testers are known because of their automatic substrate recognition and magnetic induction for ferrous substrate. These coating thickness testers are considered as finest non destructive testers as these were developed using technical aspects and are also very much capable of accurately measuring the thickness of coatings on non ferrous and on ferrous substrates which is not possible for any of conventional thickness testers. Types of these coating thickness testers are handheld coating thickness testers or measuring instruments in which the sub types are electromagnetic coating thickness tester and eddy current thickness coating thickness tester.
