The Surftest SJ-210/SJ-310 series portable surface roughness testers provide high‑resolution measurements with optional accessories and dual power options.
The SJ-210 and SJ-310 portable surface roughness testers feature a color graphic LCD, intuitive front‑panel controls, and up to ten measurement conditions stored in internal memory. They support skidded and skidless measurement methods, a wide range of evaluation parameters, and auto‑calibration functions.
A variety of optional accessories are available, including printers, stylus tips, nosepieces, adapters, and carrying cases. The devices can be powered by a rechargeable Ni‑MH battery or an AC adapter, and they offer multiple external I/O options such as USB, Digimatic, RS‑232C, printer output, and foot switch interfaces.
| Measuring range | .70" (17.5 mm) / .22" (5.6 mm) |
|---|---|
| Measuring speed | .01, .02, .03 in/s |
| Detector range | 360 µm (‑200 µm to +160 µm) |
| Stylus tip | Diamond, 90° / 5 µmR (60° / 2 µmR) |
| Power supply | Battery (rechargeable Ni‑MH) and AC adapter |
| Battery endurance | ≈1000 measurements per charge |
| Dimensions (display unit) | 2.05 × 2.59 × 6.3 in (52.1 × 65.8 × 160 mm) |
| Mass | ≈1.1 lb (0.5 kg) |
| External I/O | USB, Digimatic, RS‑232C, printer output, foot switch |
| Internal memory capacity | 10 measurement conditions, 1 profile |
The SJ-210 measures from .70 in (17.5 mm) up to .22 in (5.6 mm) depending on the drive unit type.
Up to ten measurement conditions and one measured profile can be saved in the internal memory.
The SJ-310 can be powered by a rechargeable Ni‑MH battery or an AC adapter.
It offers USB, Digimatic, RS‑232C, printer output, and a foot‑switch interface.