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Lab Film Gauge Combines Two Test Methods in One.


A new off-line film-thickness gauge incorporates both a high-precision micrometer micrometer (mīkrŏm`ətər, mī`krōmē'tər).

1 Instrument used for measuring extremely small distances.
 to measure absolute thickness and a non-contacting capacitance capacitance, in electricity, capability of a body, system, circuit, or device for storing electric charge. Capacitance is expressed as the ratio of stored charge in coulombs to the impressed potential difference in volts.  sensor A device that measures or detects a real-world condition, such as motion, heat or light and converts the condition into an analog or digital representation. An optical sensor detects the intensity or brightness of light, or the intensity of red, green and blue for color systems.  to measure thickness profile. The new lab Model GPA-C from Octagon Process Technology in Wurzburg, Germany, automatically calibrates itself before testing each new film sample. Taking a section of film roughly 100 mm wide, the micrometer measures the first 30 mm of the strip to calibrate To adjust or bring into balance. Scanners, CRTs and similar peripherals may require periodic adjustment. Unlike digital devices, the electronic components within these analog devices may change from their original specification. See color calibration and tweak.  the capacitance gauge, which then measures the rest of the sample. Software displays and analyzes the data.
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Publication:Plastics Technology
Date:Jul 1, 2000
Words:82
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