Surftests
> Large touch type LCD with graphic display
-Easy to operate touch panel
-X-axis measuring range of 25mm Z-axis range
• Equipped with 38 roughness parameters that conform to the latest ISO, DIN, ANSI, and JIS standards. • A wide-range, high-resolution detector and a drive unit provide superior highaccuracy measurement in its class.
800µm / 0.000125µm (at 8µm range)
SJ-401 drive unit: 0.3µm / 25mm
SJ-402 drive unit: 0.5µm / 50mm
• A skidless detector and a curved surface
compensation function provide efficient
evaluation of cylinder surface roughness.
• Ultra-fine steps, straightness and waviness
can be measured by using the skidless
measurement function.
• Measured data can be output to a PC with
an RS-232C cable (optional).
• Supplied with a calibrated roughness
standard.
• Digital filter function for non-distorted
roughness profiles.
• GO/NG judgment function.
• Auto-calibration function.
Technical Data
X axis (drive unit)
Measuring range: 25mm (SJ-401), 50mm (SJ-402)
Measuring speed: 0.05, 0.1, 0.5, 1.0mm/s
Return speed: 0.5, 1.0, 2.0mm/s
Traverse direction: Backward
Traverse linearity: 0.3µm / 25mm (SJ-401),
0.5µm / 50mm (SJ-402)
Positioning: ±1.5° (tilting), 10mm (up/down)
Detector
Range / resolution: 800µm / 0.01µm, 80µm / 0.001µm,
8µm / 0.0001µm (up to 2400µm with
an optional stylus)
Measurement method: Skidless / skidded
Measuring force: 4mN or 0.75mN See page K-7
Stylus tip: Diamond, 90º / 5µmR
(60º / 2µmR: See page K-7)
Skid radius of curvature: 40mm
Type: Differential inductance
Power supply: Via AC adapter / rechargeable battery
Battery life: Max. 600 measurements (w/o printing)
Recharge time: 15 hours
Data output Via RS-232C interface / SPC output
Memory card: Storage/call of measurement
condition (largest 20 cases) and
storage of evaluation data
Storage/call of sampling data and
storage/call of statistical data
Dimensions (WxDxH)
Control unit: 307 x 165 x 94mm
Height-tilt adjustment unit: 131 x 63 x 99mm
Drive unit: 128 x 36 x 47mm (SJ-401),
155 x 36 x 47mm (SJ-402)
Mass
Control unit: Approx. 1.2kg
Height-tilt adjustment unit: Approx. 0.4kg
Drive unit: 0.6kg (SJ-401), 0.7kg (SJ-402)
Evaluation Capability
Applicable standards:
JIS’82, JIS’94, JIS’01, ISO, ANSI, VDA
Assessed profiles:
P (primary profile), R (roughness profile), W (filtered
waviness profile), DIN4776, roughness motif, waviness
motif
Evaluation parameters:
Ra, Ry, Rz, Rt, Rp, Rq, Rv, Sm, S, Pc, R3z, mr(c), Rpk,
Rvk, δc, Rk, Mr1, Mr2, Lo, Ppi, R, AR, Rx, A1, A2, HSC,
mr, Da, Sk, Ku, Vo, Dq, W, AW, Wx, Wte, Rz1max(ISO),
Rmax(VDA, ANSI),
Analysis graphs:
Bearing Area Curve (BAC1 / 2), Amplitude Distribution
Curve (ADC)
Digital filter 2CR, PC75, Gaussian
Cutoff length 0.08, 0.25, 0.8, 2.5, 8mm
Sampling length: 0.08, 0.25, 0.8, 2.5, 8mm; or
arbitrary length in range 0.1 to
25mm (0.1 to 50mm: SJ-402) in
0.1mm increments
Number of sampling lengths: 1, 3 or 5 (limited by traverse range)
Printer Thermal type
Printing width 48mm (paper width: 58mm)
Recording magnification
Vertical magnification: 10X to 100,000X, Auto
Horizontal magnification: 1X to 1,000X, Auto
Function
Customize: Selection of display/evaluation parameter
Data compensation: R-surface, Tilt compensation
Ruler function:
Displays the coordinate difference of any two points
D.A.T. function:
Helps to level workpiece prior to skidless measurement
Displacement detection mode
Enables the stylus displacement to be input while the
drive unit is stopped.
Statistical processing: Max. value, Min. value, Mean value,
Standard deviation (s), Pass ratio, Histogram
Tolerance judgment: Upper and lower limit values for three
parameters can be specified.
Measuring condition storage Five sets of measuring
conditions (control unit)
