Surftest SJ-301 Series
Battery-powered portability means better productivity when making surface roughness measurements on the shop floor.
Capable of performing measurements in any orientation, including vertical and upside-down. Optional accessories,
such as height gage adapter, allow measurements to be performed easily in various situations and setups.
Unbeatable portable surface roughness tester created for ease-of-use and as a cost-effective solution to a
wide variety of measuring needs
Simple operations performed with the large LCD touch-panel    - The Measure-Start button and others frequently used are shop-hardened and resistant to workshop contaminants.
Equipped with a large capacity battery that, when fully charged, allows approximately 600 measurements to be made    - A convenient carrying case is supplied as standard for protecting the instrument in the field.
A high-resolution, high-speed printer is built in the main unit.    - Five sets of measurement set-ups can be saved in the unit and the optional memory card (compact flash memory)        allows saving of set-ups and measurements.   - Measurement data also can be saved in the memory card in CSV format and then loaded onto a personal computer      for data handling with spreadsheet software.
Result display screen shows the GO/NG judgement result.
Evaluation parameters conform to internationally recognized surface roughness standards.
Recorded profile display capability allows surface texture measurements to be checked instantly, prior to print-out.
With a broad array of statistical processing functions, the instrument is ideally suited for histogram-based data management.
Specifications
Model No.		SJ-301			SJ-301R			SJ-301S
		4mN type	0.75mN type		4mN type		0.75mNtype	4mN type	0.75mN type
Order No.		178-953-3 (mm)	178-952-3 (mm)		178-980 (mm)		178-990 (mm)	178-929-2 (mm)	178-939-2 (mm)
		178-954-3 (inch/mm)	178-955-3 (inch/mm)		178-987 (inch/mm)		178-997 (inch/mm)	178-901-2 (inch/mm)	178-902-2 (inch/mm)
Measuring range	X-axis	.5 inch (12.5mm)						.22 inch (5.6mm)
	Z-axis	13780µinch (-7880 µinch to +5900 µinch) (350 µm(-200 µm~+150 µm))
Drive unit	Measuring speed	.01, .02 inch/s (0.25, 0.5 mm/s)						.01 inch/s (0.25mm/s)
Detector	Measuring motion	Standard		Starts measuring from detector retracted state				Transverse tracing
	Conical taper angle	90๐	90๐	90๐		60๐		90๐	90๐
	Stylus tip radius	5 µm	2 µm	5 µm		2 µm		5 µm	2 µm
	Measuring force	4 mN	0.75 mN	4 mN		0.75 mN		4 mN	0.75 mN
	Stylus tip material	Diamond
	Skid radius of curvature	1.57 inch (40 mm)
	Skid force	400 mN or less
	Detecting method	Differential inductance
Applicable standards		JIS’82, JIS’94, JIS’01, DIN, ISO, ANSI
Assessed profiles		Primary profile (P), Roughness profile (R), DIN4776, MOTIF-R, MOTIF-W
Sampling length		.003, .01, .03, .1, .3 inch (0.08, 0.25, 0.8, 2.5, 8 mm)
Number of sampling lengths		X1, x3, x5
Arbitrary length		.01 to .49 inch (.01 inch interval) (0.3 ~ 12.5mm (0.1 mm increment))
Function	Customization	Desired parameters can be selected for calculation and display.
	Statistical processing	Maximum value, minimum value, mean value, standard deviation, pass rate,      frequency distribution chart of each parameter
	GO/NG judgement	Upper/lower limit setting: 3 parameters, GO/NG judgement rule: mean value, 16% rule, maximum value rate
	Measurement conditions saving	Maximum 5 sets
	Data saving	Save/retrieval of measurement conditions (up to 20 sets), evaluating data, Sampling data, and statistical data with a memory card (option).
	Calibration	Auto-calibration with the entry of numerical value.
	Power saving function	If the auto-power-off function is ON : Power turns off if not operated for 5 minutes
External input/output		RS-232C I/F, SPC output
Power supply		Two-way power supply: battery (rechargeable Ni-H battery) and AC adapter
Battery	Charging time	15 hours maximum
	Recharge cycles	Approximately 600 times (slightly varies with the usage and environmental conditions)
External dimensions (WxDxH)	Display unit	12.09” x 6.50” x  3.70” (307 x 165 x 94mm)
	Drive unit