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<p>Digital Surface Roughness Tester Machine Matrix LCD Display<br> <br> Features<br> ● Five optional sensors for measuring special shaped work-pieces.<br> ● DSP chip controlled achieves high accuracy and fast testing speed.<br> ● Matrix LCD screen displays all parameters and data.<br> ● 13 parameters: Ra,Ry,Rq,Rz,Rt,RSm,RS,Rp,Rv,R3z,RSk,Rmax,Rmr<br> ● 4 filtering methods: RC, PC-RC, GAUSS and D-P.<br> ● High quality with ISO/ DIN/ CE/ JIS/ FCC standards.<br> ● Memory: 100 groups of measuring data.<br> ● Power supply: 3.7V rechargeable Li-ion battery.<br> ● Available PC software for data management and Excel reports.<br> ● Optional printer connecting by USB.<br> <br> Standard Sensor<br> <br> Detection Principle Inductive<br> Material of stylus Diamond<br> Radius of stylus 5μm<br> Stylus force 4mN(0.4gf)<br> Contact angle 90°<br> <br> Technical Specification<br> Roughness parameters Ra,Ry,Rq,Rz,Rt,RSm,RS,Rp,Rv,R3z,RSk,Rmax,Rmr<br> Measuring range Ra:0.005-16μm Rz:0.02-160μm<br> Resolution 0.001μm<br> Maximum driving trip 17.5mm/0.7inch<br> Sample length/Range (L) 0.25mm, 0.8mm, 2.5mm/±20μm,±40μm,±80μm<br> Evaluation length 1.25mm, 4mm,5mm/Option from(1-5)L<br> Filtering methods RC, PC-RC, GAUSS, D-P,<br> Error of indication ≤±10%<br> Variation of indication &lt;6%<br> Memory 100 Groups<br> Operating temperature 0 ºC -40 ºC<br> Weight 440g<br> Dimensions 119×47×65mm<br> Standard configuration Main Unit,Standard sensor,Calibration block, Supporting platform, Power charger, Manual,Certificate, Warranty card, PC analysis software</p>