SR220 Surface Roughness Tester
SADT · SKU sadt-SR220
The SR220 is a portable surface roughness tester, a small handheld instrument with a large display, high accuracy and multiple parameters, used in labs, inspection areas or wherever on-site roughness testing is needed. Measurement data can be exported to a PC or mini printer. It measures 28 parameters (Ra, Rq, Rz, Rt, Rp, Rv, RSm and others), has a high-accuracy inductive probe with a 320 µm range, four filtering methods (RC, PC-RC, GAUSS, D-P), compliance with ISO, DIN, ANSI and JIS standards, and a 2.7-inch OLED dot-matrix display.
Technical specifications
| Model | SR220 |
| Filter | RC, PC-RC, Gauss, D-P |
| Graphs | roughness profile, material ratio curve, direct profile |
| Weight | approx. 360 g |
| Accuracy | ≤±10% |
| Dimension | 112x50x47 mm |
| Standards | ISO, ANSI, DIN, JIS |
| Probe - tip | natural diamond, 90° cone angle, 5 μm tip radius |
| Probe force | <4 mN |
| Power supply | built-in lithium battery, AC adapter 8.4V 800mA |
| Repeatability | ≤6% |
| Sampling length | 0.25/0.8/2.5 mm |
| Probe - principle | differential inductance |
| Z-axis resolution | 0.01 μm/±20 μm, 0.02 μm/±40 μm, 0.04 μm/±80 μm, 0.08 μm/±160 μm |
| Measured parameters | Ra, Rq, Rz, Rt, Rp, Rv, RS, RSm, Rz(JIS), Ry(JIS), RSk, R3z, Rmax, Rpc, Rmr, Rku and others |
| Z-axis (vertical) measuring range | 320 μm (Ra=80 μm) |
| X-axis (horizontal) measuring range | 17.5 mm |
Specifications subject to confirmation in the formal quote.
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