Gap measuring instrument for liquid crystal box
WGT cell gap measuring instrument (Gap Tester) the measuring instrument can be used to measure the thickness of liquid crystal cell gap (1 - 10 m); membrane capacitance or other types of film thickness (1 - 50 m); also can be used as instrument for measuring the film level very thin thickness (10nm-1 m) PI, such as film, liquid crystal display of ITO and silicon oxide layer thickness measurement. Measuring principle: using fixed wavelength laser beam with different incident angle, oblique to the measured sample, by measuring the interference intensity for minimum position, so as to determine the thickness of the sample. The structure of the instrument design and measurement principle, in essence, is not a direct measurement of the small thickness, converted into a straight line length can be directly measured, so that the measurement method is very simple and accurate. (1): WGT mechanical specifications - I WGT - II dimensions L360 * W280 * H400 mm L350 * W280 * H460 mm kg 40 kg weight 32 (two): performance parameters of WGT-I type WGT-II type 10nm-50 thickness measuring range measurement accuracy in the measurement of the absolute error of 10nm-1 the range of less than 1nm thickness in 1-10% range measurement error is less than 0.1% per cent of thickness measurement error in the 10-50 range less than 0.3% wavelength 0.675 load sample table size 200mm*150mm 300mm*200mm sample size rectangular sample side width less than 150mm size limit the measurement time is less than 2 seconds per point of rated power 150W 220V 50Hz/60Hz
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