MITUTOYO SJ-220 Portable Surface Roughness Tester

Retractable drive unit type

Measuring range: 

Traverse length: 17.5 mm

Detector

Range: 360 µm (-200 µm to +160 µm)

Range/resolution: AUTO/depending on the measurement range, 360 µm/3.5 nm, 100 µm/0.9 nm, 25 µm/0.2 nm

Tracing speed: During measurement: 0.25 mm/s, 0.5 mm/s, 0.75 mm/s, 1 mm/s, During return: 1mm/s

Measuring force: 0.75mN

Stylus tip:

Radius: 2 µm

Angle: 60'

Skid force: Less than 400 mN

Assessed profiles: Primary profile (P), Roughness profile (R), DF profile, R-Motif

Power supply

AC adapter (USB type with interchangeable AC pin adapters), Input voltage: 100 VAC to 240 VAC ±10% (50 Hz/60 Hz)

Output rating: 5.0 VDC/2.0 A, Internal battery (Ni-MH), USB standard supported: USB 2.0 (Full speed), USB charging standard: BC1.2

The following USB ports are supported: SDP "SDP (Standard Downstream Port)", CDP "CDP (Charging Downstream Port)", DCP "DCP (Dedicated Charging Port)"

Charging time: Up to 4 hours (operable during charging)

Built-in battery:

The charging time above is applied when the supplied AC adapter is used. When the battery is charged via a USB connection with a PC, etc., charging may take more than 4 hours to complete..

Number of measurable times: Approx. 1,000 times (depending on the measurement conditions with full charge) Charging temperature: 5°C to 40°C if the ambient temperature is too high, the battery may not charge sufficiently.

Size (WxDxH)

Display unit: 164.7×67.1x51.9 mm

Drive unit: 115x23x26 mm

Mass: 330 g (Display unit), 180 g (Drive unit), 7.8 g (Detector)

Datasheet