Optional techniques for film thickness gauges The test methods for film thickness gauges are: magnetic thickness measurement, radiation thickness measurement, electrolytic thickness measurement, eddy current thickness measurement, and ultrasonic thickness measurement. Pay attention to the following eight points when making thickness measurement: 1. When testing, pay attention to the metal magnetic and surface roughness of the standard piece collective should be similar to the test piece. 2. Pay attention to the measurement, the side head is perpendicular to the surface of the sample. 3 Pay attention to the critical thickness of the base metal when testing the high and low temperature test chamber. If it is larger than this thickness measurement, it will not be affected by the thickness of the base metal. 4. Pay attention to the influence of the curvature of the test piece on the measurement when measuring. Therefore, it is not reliable when measuring on the surface of a curved test piece. 5. Before measuring, please pay attention to whether other electrical equipment around will produce the magnetic field of the conductivity meter, if it will interfere with the magnetic thickness measurement method. 6. When measuring, be careful not to measure at the inner corner and near the edge of the test piece, because the sudden change of the surface shape of the specimen of the general film thickness gauge is very sensitive. 7. Keep the pressure constant during the measurement, otherwise it will affect the measured reading. 8. When testing, pay attention to the direct contact between the instrument probe and the DIN cup. Therefore, the ultrasonic film thickness gauge removes the attached material from the opposite side. Second, the main function of ultrasonic film thickness gauge 1, ultrasonic film thickness gauge is suitable for measuring the thickness of metal (such as steel, cast iron, aluminum, copper, etc.), plastic, ceramic, glass, fiberglass and any other good ultrasonic conductor; 2 It can be equipped with a variety of probes of different frequencies and different wafer sizes; 3 color wheel, with probe zero calibration, two-point calibration function, can automatically correct the system error; 4, the known thickness can counter-test the sound speed to improve Measurement accuracy; 5, with single point thickness measurement and scanning thickness measurement two thickness measurement mode; 6, pre-set thickness value upper and lower limits, out of range automatic alarm; 7, with coupling state prompt function; 8, with EL backlight Display, convenient to use in dimly lit environment; 9, with residual power indication function, real-time display of battery remaining power; 10, ultrasonic film thickness gauge with automatic sleep, automatic shutdown and other power-saving functions; 11, with RS232 interface, Data exchange and parameter setting can be conveniently and quickly performed with a PC. You can connect to a micro printer (manufacturer model) to print a measurement report. 12, optional computer software, with transmission measurement results, measurement storage management, measurement statistics analysis, print measurement report and other rich functions; 13, ultrasonic film thickness gauge sealed metal casing, compact, portable, high reliability Suitable for harsh operating environment, anti-vibration, shock and electromagnetic interference; ultrasonic film thickness gauge should do two-point calibration and zero-point calibration before measurement. Two-point calibration is to put the standard diaphragm on the metal substrate for testing. The error is not required to perform a two-point test. If the error is large, the test piece is tested after the calibration is completed until the displayed data is normal. Zero calibration is to adjust the machine to zero calibration mode, test on the workpiece to be tested and then complete.
For more information on the film thickness gauge, please refer to it: http://electronic balance/P>
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