1, START\/STOP Start\/stop measurement 2, POWER\/DATA Connect to the power supply, Setting mode of CAL\/STD\/RANGE correction\/roughness specification\/conversion measurement range 4. CUTOFF\/ conversion intercept cursor key (top) 5. mm\/INCH\/mm\/inch public\/Imperial conversion cursor key (bottom) 6. LCD screen displays measurement results and setting status 7. PARAMETER Roughness parameter of the display result 8. Number of n\/ENT conversion intervals. Confirm key (When conditions are set) 9. CURVE\/FILTER\/TOL\/CUST Convert measurement curve\/filter\/Check whether qualified\/Custom setting MODE 10. MODE\/ESC Switch to other conditional setting mode Exit key 11. REMOTE\/ Switch to remote mode Cursor key (left) Power off
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4 measurement methods of roughness meter
1. Needle tracing
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Needle tracing is the use of stylus directly on the measured surface gently across, so as to measure the surface roughness Ra value.
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2. Intervention method
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Interferometry is the use of light wave interference principle to measure surface roughness.
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3. Comparative method
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The comparison method is commonly used in the workshop. The measured surface is compared with the roughness template, which is judged by the naked eye or compared with a magnifying glass or a comparison microscope. The roughness of the machined surface can also be judged by the feeling of hand touch and fingernail scratching. This method is generally used for approximate evaluation of larger roughness parameters.
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4, light cutting method
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Light cutting method is used. Optical cutting principle " To measure surface roughness.