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Digital Surface Roughness Tester Advanced Portable Surface Roughness Tester TR-320T is suitable for surface roughness measuring on hard surface, widely used for measuring metal and non-metal parts, a variety of machining parts in the field of machinery processing manufacturing, testing, commodity inspection, and other quality control departments. Especially suitable for on-site measuring of large workpieces and production lines, as well as for mobile measurement by the inspection room, measurement, and commodity inspection department, the measuring won’t cause damage to the workpiece.
| Measuring Range | Z Axis (Vertical): 320 µm (-160 µm to +160 µm) X-Axis (Transverse): 17.5 mm (0.69 inch) |
| Resolution (Z Axis – Vertical) | 0.002 µm for ±20 µm 0.004 µm for ±40 µm 0.008 µm for ±80 µm 0.02 µm for ±160 µm |
| Display Parameters |
Ra, Rz, Rq, Rt, Rc, Rp, Rv, R3z, R3y, Rz (JIS), Ry, Rs, Rsk, Rku, Rmax, Rsm, Rmr, RPc, Rk, Rpk, Rvk, Mr1, Mr2 |
| Assessed Graphic | Rmr curve, Roughness curve, Primary Profile, Filter waveform |
| Standard | ISO4287, ANSI b46.1, DIN4768, JISb601 |
| Filter Types | RC, PC-RC, Gauss, D-P |
| Cut-off Length | 0.0098 in, 0.0314 in, 0.0984 in. (0.25 mm, 0.8 mm, 2.5 mm) |
| Assessment Length (ln) | Ln = lr * n, where n = 1 to 5 |
| Sensor | Measuring Principle: Differential Inductance Stylus Tip: Diamond, 90° cone angle, 5μmR Measuring Force: < 4mN, Skid force < 400mN Guide Parts: Hard alloy, skid radius of curvature: 1.5748 in (40 mm) |
| Measuring Speed | lr = 0.25, Vt = 0.135 mm/s lr = 0.8, Vt = 0.5 mm/s lr = 2.5, Vt = 1 mm/s Return Vt = 1 mm/s |
| Accuracy | 0.001 μm |
| Tolerance | ± (5nm + 0.1A), where A = Ra standard value of precise specimen |
| Repeatability | ≤ 3% |
| Residual Profile | ≤ 0.010 μm |
| Power Supply | Built-in Lithium-ion battery 3600mAh |
| Main Unit Dimension | 6.1023 in x 5.7086 in x 2.2834 in (155 mm x 145 mm x 58 mm) |
| Drive Unit Dimension | 0.9055 in x 1.063 in x 4.5275 in (23 mm x 27 mm x 115 mm) |
| Zoom of Height Adapter | 1.5748 in (40 mm) |
| Working Environment | Temperature: -4 °F to 104 °F (-20 ºC to 40 ºC) Humidity: < 90% RH |
| Store and Transportation Environment | Temperature: -4 °F to 104 °F (-20 ºC to 40 ºC) Humidity: < 90% RH |
| Standard Sensor | Groove sensor |
| Optional Accessories | Magnetic Stand, Height Gauge, and Related Adapter Curved Sensor, Small Hole Sensor, Deep Groove Sensor, Very Small Hole Sensor Extending Rod, Right Angle Rod Mini Printer, Software, Mobile APP |