à¤Ã×èͧÇÑ´¤ÇÒÁàÃÕº¼ÔÇ à¤Ã×èͧÇÑ´¤ÇÒÁàÃÕº Surface Roughness Tester SRT-6210 This instrument is compatible with four standards of site to measure surface roughness of various machinery-processed parts, calculate corresponding and clearly display all measurement parameters. * Multiple parameter measurement: Ra, Rz, Rq, Rt * Highly sophisticated inductance sensor * Four wave filtering methods : RC, PC-RC, GAUSS and D-P * Can communicate with PC computer for statistics, printing and analyzing by the optional cable and the software for RS232C interface. * Manual or automatic shut down. * The tester can memorize 7 groups of measurement results and measuring conditions for later use or download to PC. SPECIFICATIONS Display:4 digits, 10 mm LCD, with blue backlight Parameters: Ra, Rz, Rq, Rt Measuring Range: Ra, Rq: 0.005-16.00um/0.020-629.9uinch; Rz,Rt: 0.020-160.0um/0.078-6299uinch Accuracy: Not more than +-10% Fluctuation of display value: Not more than 6% Sensor: Test Principle: Inductance type; Radius of Probe Pin: 5μm; Material of Probe Pin: Diamond; Dynamo-measurement of Probe: 4mN(0.4gf); Probe Angle: 90˚; Vertical Radius of Guiding Head: 48mm Maximum driving stroke: 17.5mm/0.7inch Cutoff length (l): 0.25mm / 0.8mm / 2.5mm optional Evaluation length: 5l Driving speed: sampling length = 0.25mm Vt=0.135mm/s sampling length = 0.8mm Vt=0.5mm/s sampling length = 2.5mm Vt=1mm/s returning Vt=1mm/s Profile digital filter Filtered Profile: RC Filtered Profile: PC-RC Filtered Profile: Gauss Non-Filtered Profile: D-P Evaluation length : 5 cut-off Power Li-ion battery: rechargeable Operating conditions: Temp. 0 ~ 50℃, Humidity <80% Size:140x57x48 mm (5.5x2.2x1.9 inch), Weight: about 420 g à¤Ã×èͧÇÑ´¤ÇÒÁàÃÕº¼ÔÇ Surface Roughness Tester SRT-6210