Mitutoyo SJ-210 User manual

PAUL N GARDNER COMPANY
9104 GUILFORD ROAD, SUITE H EMAIL [e-mail]
COLUMBIA, MD 21046 USA PHONE [phone]

Surface Roughness
Measuring Tester
SJ-210
User’s Manual
Read this User’s Manual thoroughly before operating the
instrument. After reading, retain it close at hand for future
reference.
No. 99MBB122
A
SERIES No. 178

No. 99MBB122A i
CONVENTIONS USED IN THIS MANUAL
Safety Precautions
To ensure that instruments are operated correctly and safely, Mitutoyo manuals use
various safety symbols (Signal Words and Safety Alert Symbols) to identify and warn
against hazards and potential accidents.
The following signs indicate general warnings:
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in serious
injury or death.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in serious
injury or death.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury or property damage.
The following signs indicate specific warnings or prohibited actions, or indicate a
mandatory action:
Alerts the user to a specific hazardous situation. The given example means “Caution,
risk of electric shock”.
Prohibits a specific action. The given example means “Do not disassemble”.
Specifies a required action. The given example means “Ground”.

No. 99MBB122A
ii
CONVENTIONS USED IN THIS MANUAL
Types of Notes
The following types of notes are used in this manual to help the operator obtain reliable
measurement data through correct instrument operation.
IMPORTANT • An important note provides information essential to the completion of a task. You cannot
disregard this note to complete the task.
• An important note is a type of precaution, which if neglected could result in a loss of
data, decreased accuracy or instrument malfunction/failure.
NOTE A note emphasizes or supplements important points of the main text. It also supplies
information about specific situations (e.g., memory limitations, equipment
configurations, or details that apply to specific versions of a program).
TIP A tip is a type of note that helps the user apply the techniques and procedures described
in the text to his or her specific needs.
It also provides reference information associated with the topic being discussed.
• Mitutoyo assumes no liability to any party for any loss or damage, direct or indirect,
caused by use of this instrument not conforming to this manual.
• Information in this manual is subject to change without notice.
Copyright

2009 Mitutoyo Corporation. All rights reserved.

No. 99MBB122A iii
Precautions for Use
To obtain the highest performance from this instrument and to use it safely, read this
User’s Manual prior to use.
This user’s manual is intended for users of surface roughness testers SJ-210 standard
type, SJ-210 transverse tracing drive type, and SJ-210 detector retracting type.
“SJ-210” is used in almost all descriptions of this user’s manual. If using model SJ-210
detector retracting type read this manual assuming “SJ-210” as “SJ-210 detector
retracting type”. Unless otherwise noted, the manual gives common information about the
SJ-210 standard type and SJ-210 detector retracting type.
Observe the following precautions to get the most of the instrument and to attain high
accuracy for long time.
CAUTION
This instrument has a sharp stylus at the edge of the detector. Take care not to be
injured.
IMPORTANT • For the power supply, follow the conditions described on the AC adapter supplied. Do
not use other than the AC adapter provided.
• Do not disassemble the instrument unless otherwise specified in this User’s Manual. It
will result in instrument failure or damage. The instrument has been rigorously adjusted
and assembled at the factory.
• Do not drop or give impact to the detector. The detector is a precision part.
• Do not use the instrument in an environment where it is subject to dust or vibrations.
Also keep it as far apart from noise generator such as large power supply, high-voltage
relay switch as possible.
• Avoid using the instrument where there is sudden temperature change, and operate it
where the temperature is between 10 and 30 C (RH: 85 % or less, free from dew
condensation). Do not operate/store the instrument close to a room heater or in the
direct sunlight.
• Store the instrument where the temperature can be controlled between –10 and 50 C.
• When mounting the detector to the drive unit, take care not to apply excessive force to
the drive unit.
• Before connecting/detaching the connector or connecting cable, turn the power off (by
auto sleep function).
• The stylus tip is machined precisely. Take care not to break it.
• Before measurement, wipe off oil or dust on the work piece surface to be measured.

No. 99MBB122A
iv
Warranty
In the event that the Mitutoyo product, except software product, should prove defective in
workmanship or material, within one year from the date of original purchase for use, it will
be repaired or replaced, at our option, free of charge upon its prepaid return to us.
If the product fails or is damaged for any of the following reasons, it will be subject to a
repair charge, even if it is still under warranty.
1 Failure or damage owing to inappropriate handling or unauthorized modification.
2 Failure or damage owing to transport, dropping, or relocation of the instrument after
purchase.
3 Failure or damage owing to inappropriate maintenance, storage, and preservation.
4 Failure or damage owing to abnormal voltage or usage of electric power supply
(voltage, frequency) that is not specified.
5 Failure or damage owing to fire disaster, earthquake, flood disaster, thunderbolt, the
other acts of providence, environmental destruction, smoke pollution, or gas pollution
(such as sulfuretted gas).
6 Not presenting guarantee certificate.
7 The other failures or damages we can not be responsible for (such as damages owing
to the misuse of this product).
This warranty is effective only where the instrument is properly installed and operated in
conformance with the instructions in this manual.
Export Control Compliance
This Product falls into the Catch-All-Controlled Goods or Program under the Category 16
of the Separate Table 1 of the Export Trade Control Order or the Category 16 of the
Separate Table of the Foreign Exchange Control Order, based on the Foreign Exchange
and Foreign Trade Law of Japan.
Further, this User’s Manual also falls into the Catch-All-Controlled Technology for use of
the Catch-All-Controlled Goods or Program, under the Category 16 of the Separate Table
of the Foreign Exchange Control Order.
If you intend re-exporting or re-providing the product or technology to any party other than
yourself, please consult with Mitutoyo prior to such re-exporting or re-providing.

No. 99MBB122A v
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and other European
countries with separate collection systems)

This symbol on the product or on its packaging indicates that this product shall not be
treated as household waste. To reduce the environmental impact of WEEE (Waste
Electrical and Electronic Equipment) and minimize the volume of WEEE entering
landfills, please reuse and recycle.
For further information, please contact your local dealer or distributors.

No. 99MBB122A
vi
Contents
CONVENTIONS USED IN THIS MANUAL........................................................................................................ i
Precautions for Use........................................................................................................................................ iii
Warranty........................................................................................................................................................... iv
Export Control Compliance ........................................................................................................................... iv
Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union
and other European countries with separate collection systems)............................................................. v
1SJ-210 OVERVIEW ................................................................................................................................ 1-1
1.1Outline of the SJ-210..................................................................................................................... 1-1
1.2Standard SJ-210 Configuration .................................................................................................... 1-4
1.3Name of Each Part on the SJ-210 ................................................................................................ 1-8
2OPERATION KEYS AND DISPLAY OF THE SJ-210 ............................................................................ 2-1
2.1Functions of Operation Keys ....................................................................................................... 2-1
2.2Home Screen.................................................................................................................................. 2-3
2.3Screen Hierarchy in the Display................................................................................................... 2-6
2.4Displaying the Guide Screen...................................................................................................... 2-13
2.5Entering Numeric Values/Characters ........................................................................................ 2-15
2.6List of Icons.................................................................................................................................. 2-18
2.7Screen Settings............................................................................................................................ 2-23
3SETTING UP THE SJ-210...................................................................................................................... 3-1
3.1SJ-210 Settings.............................................................................................................................. 3-1
3.2Attaching and Detaching the Drive/Detector Unit ...................................................................... 3-2
3.2.1Attaching and detaching the detector ................................................................................. 3-2
3.2.2Attaching and detaching the drive/detector unit ................................................................ 3-6
3.2.3Plugging in and unplugging the display unit cable............................................................ 3-8
3.2.4Using the connection cable .................................................................................................. 3-9
3.3Attaching the Display Protection Sheet .................................................................................... 3-12
3.4Power Supply ............................................................................................................................... 3-13
3.4.1Recharging the built-in battery........................................................................................... 3-14
3.4.2Turning on the power supply.............................................................................................. 3-17
3.4.3Setting the auto-sleep function when using the built-in battery..................................... 3-23
3.5Initial Settings .............................................................................................................................. 3-24
3.6Carrying Case .............................................................................................................................. 3-25
4MEASUREMENT OPERATION.............................................................................................................. 4-1
4.1Overall Measurement Flow ........................................................................................................... 4-1
4.2Calibration ...................................................................................................................................... 4-3
4.3Measurement.................................................................................................................................. 4-4
4.3.1Setting the workpiece and SJ-210........................................................................................ 4-4

No. 99MBB122A vii
4.3.2Starting measurement ........................................................................................................... 4-6
4.4Measurement Result Management .............................................................................................. 4-7
4.4.1Loading/Saving/Deleting/Renaming measurement results............................................... 4-7
4.4.2Outputting the measurement results................................................................................... 4-7
5MEASUREMENT RESULT DISPLAY .................................................................................................... 5-1
5.1Switching the Measurement Result Display with the [PAGE] Key ........................................... 5-2
5.1.1Switching the parameter display.......................................................................................... 5-3
5.1.2Evaluation profile display ..................................................................................................... 5-3
5.1.3Graph display......................................................................................................................... 5-5
5.1.4Condition list display ............................................................................................................ 5-6
5.1.5GO/NG judgment result display ........................................................................................... 5-6
5.1.6Trace display .......................................................................................................................... 5-8
5.2Sampling Length Result Display ............................................................................................... 5-10
6CALIBRATION........................................................................................................................................ 6-1
6.1Calibration Preparation................................................................................................................. 6-2
6.1.1Calibration preparation (standard type, retracting type) ................................................... 6-2
6.1.2Calibration preparation (transverse tracing type) .............................................................. 6-5
6.2Calibration Condition Setup Screens Guide .............................................................................. 6-7
6.3Calibrating the SJ-210................................................................................................................... 6-9
6.4Setting the Nominal Value of the Precision Roughness Specimen ........................................6-11
6.5Setting Calibration Conditions ..................................................................................................6-13
6.5.1Setting the number of measurements ............................................................................... 6-14
6.5.2Modifying the roughness standard.................................................................................... 6-16
6.5.3Modifying profile filters.......................................................................................................6-18
6.5.4Modifying the cutoff length (λc) ......................................................................................... 6-20
6.5.5Modifying the number of sampling lengths (N)................................................................ 6-21
6.5.6Setting the evaluation length to an arbitrary length ........................................................ 6-22
6.5.7Modifying the traversing speed ......................................................................................... 6-24
6.5.8Modifying the measuring range ......................................................................................... 6-25
6.6Checking the Calibration History .............................................................................................. 6-26
6.7Setting the Stylus Alarm ............................................................................................................. 6-27
7MODIFYING MEASUREMENT CONDITIONS....................................................................................... 7-1
7.1Measurement Condition Screens Guide ..................................................................................... 7-2
7.2Modifying the Roughness Standard............................................................................................ 7-4
7.3Modifying the Evaluation Profile ................................................................................................. 7-5
7.4Modifying Display Parameters..................................................................................................... 7-7
7.5Modifying Profile Filters ............................................................................................................... 7-8
7.6Modifying Items Related to Cut-off............................................................................................ 7-10
7.7Modifying the Number of Sampling Lengths............................................................................ 7-14
7.8Setting the Evaluation Length to an Arbitrary Length............................................................. 7-16
7.9Setting Pre-travel/Post-travel..................................................................................................... 7-20
7.10Modifying the Traversing Speed................................................................................................ 7-22

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7.11Modifying the Measuring Range ................................................................................................ 7-24
7.12Reprocessing Calculation Results ............................................................................................ 7-25
7.13Saving/Loading/Deleting/Renaming Measurement Conditions.............................................. 7-27
7.13.1Measurement condition management screens guide...................................................... 7-28
7.13.2Saving measurement conditions........................................................................................ 7-30
7.13.3Loading measurement conditions ..................................................................................... 7-34
7.13.4Deleting measurement conditions ..................................................................................... 7-35
7.13.5Renaming saved measurement conditions....................................................................... 7-37
8MODIFYING PARAMETERS.................................................................................................................. 8-1
8.1Parameter Modification Screens Guide ...................................................................................... 8-1
8.2Selecting the Displayed Parameters (Parameter Customization) ............................................ 8-3
8.2.1Customizing parameters ....................................................................................................... 8-3
8.3Setting the GO/NG Judgment Function ...................................................................................... 8-9
8.4Parameter Detail Settings ........................................................................................................... 8-14
8.4.1Setting calculation conditions when Sm, Pc, Ppi, or Rc is selected.............................. 8-14
8.4.2Setting calculation conditions when HSC is selected ..................................................... 8-18
8.4.3Setting calculation conditions when mr is selected. ....................................................... 8-21
8.4.4Setting calculation conditions when mr[c] (tp for ANSI) is selected.............................. 8-24
8.4.5Setting calculation conditions when δc (Htp for ANSI) is selected................................ 8-27
8.4.6Setting calculation conditions when a profile motif (R-Motif) is selected ..................... 8-31
9MEASUREMENT RESULTS (LOAD/SAVE/ DELETE/RENAME) ......................................................... 9-1
9.1Data To Be Saved and Storage Media.......................................................................................... 9-2
9.1.1Handling the memory card.................................................................................................... 9-2
9.1.2Memory card folder construction......................................................................................... 9-5
9.1.3Data saved on the memory card........................................................................................... 9-6
9.2Measurement Results Screen Guide ........................................................................................... 9-8
9.3File Management.......................................................................................................................... 9-10
9.3.1Modifying folder names....................................................................................................... 9-10
9.3.2Specifying the main folder .................................................................................................. 9-12
9.4Loading Measurement Results .................................................................................................. 9-13
9.4.1Loading the saved measurement results .......................................................................... 9-13
9.4.2Searching for files to load................................................................................................... 9-15
9.5Saving Measurement Results..................................................................................................... 9-17
9.5.1Saving the measurement results newly............................................................................. 9-17
9.5.2Overwriting the measurement results ............................................................................... 9-19
9.6Deleting Measurement Results .................................................................................................. 9-20
9.7Renaming Measurement Results ............................................................................................... 9-22
10OPERATING ENVIRONMENT SETUP................................................................................................ 10-1
10.1Operating Environment Setup Screen Guide ........................................................................... 10-2
10.2Setting the Date and Time .......................................................................................................... 10-4
10.3Data Output Settings ................................................................................................................... 10-6
10.3.1Setting the data output to SPC ........................................................................................... 10-7

No. 99MBB122A ix
10.3.2Setting the data output to a printer.................................................................................... 10-8
10.3.2.1Setting the print items ............................................................................................... 10-10
10.3.2.2Setting the print magnification ................................................................................. 10-12
10.3.2.3Setting the printer ...................................................................................................... 10-15
10.3.3Setting data output to save data ...................................................................................... 10-17
10.3.4Setting the data output to hard copy............................................................................... 10-18
10.4Setting the Language Display.................................................................................................. 10-19
10.5Calibrating Drive Unit Speed and Settings ............................................................................. 10-20
10.6Switching the Measurement Units........................................................................................... 10-23
10.7Setting the Decimal Point......................................................................................................... 10-24
10.8Adjust the Volume of Indicator Sounds .................................................................................. 10-25
10.9Restricting Operation Functions (Customization) ................................................................. 10-26
10.10Memory Card Formatting and File Management.................................................................... 10-28
10.10.1Formatting the memory card ............................................................................................ 10-28
10.10.2Checking the save status of the memory card ............................................................... 10-29
10.10.3Saving text data to the memory card............................................................................... 10-31
10.10.4Setting the Save 10 function ............................................................................................ 10-33
10.10.5Backing up the memory card and restoring backup data ............................................. 10-35
10.11Setting the Auto-sleep Function .............................................................................................. 10-37
10.12Setting the Self-timer ................................................................................................................ 10-39
10.13Setting PC Communication Conditions .................................................................................. 10-41
10.14Displaying the Position of the Detector .................................................................................. 10-44
10.15Testing the Display and Operation Keys ................................................................................ 10-45
10.16Restoring Factory Default Settings ......................................................................................... 10-46
10.16.1Items restored to original values when restoring factory default settings ................. 10-47
10.17Checking the Version................................................................................................................ 10-49
11SWITCHING THE CALCULATION RESULTS SCREEN .....................................................................11-1
11.1Screen Display..............................................................................................................................11-2
11.2Switching the Calibration Results Screens Guide....................................................................11-4
11.3Switching Calculation Results Screen.......................................................................................11-6
11.4Switching Evaluation Profile Screen..........................................................................................11-8
11.5Switching Graph Display Screen................................................................................................11-9
11.6Switching Measurement Conditions List Screen....................................................................11-10
11.7Setting the Display of the Setting Conditions.........................................................................11-11
11.8Switching the Display Direction ...............................................................................................11-12
12USEFUL FEATURES OF THE SJ-210................................................................................................ 12-1
12.1Shortcut Key ................................................................................................................................ 12-1
12.2Guidance Screen ......................................................................................................................... 12-2
12.3Indicating Contact State of the Detector................................................................................... 12-2
12.4Displaying Calculation Results of the Continuous Measurement
(Vertical Trace/Horizontal Trace)................................................................................................ 12-3
12.5Loading/Saving 10 Measurement Conditions .......................................................................... 12-4
12.6Saving Measurement Results Automatically............................................................................ 12-5

No. 99MBB122A
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12.7Hard Copying the Screen............................................................................................................ 12-5
12.8Automatic Printing After Completing Measurement ................................................................ 12-6
12.9Stylus Alarm ................................................................................................................................. 12-6
12.10Function Restriction.................................................................................................................... 12-6
12.11Foot Switch .................................................................................................................................. 12-7
12.12Self-timer ...................................................................................................................................... 12-7
13SAVE / OUTPUT RESULTS USING [POWER/DATA] KEY ................................................................ 13-1
13.1SPC Data Output.......................................................................................................................... 13-2
13.1.1Connecting the SJ-210 and DP-1VR................................................................................... 13-3
13.1.2Selecting parameters........................................................................................................... 13-5
13.1.3Outputting SPC data ............................................................................................................ 13-6
13.2Printing to an External Printer.................................................................................................... 13-7
13.2.1Connecting the SJ-210 and printer .................................................................................... 13-8
13.2.2Setting the printer communication conditions ................................................................. 13-9
13.2.3Printing calculation results and measurement conditions............................................ 13-11
13.2.4Printing operating environment settings ........................................................................ 13-13
13.3Saving Data to the Memory Card ............................................................................................. 13-15
13.3.1Saving measurement results to the memory card ......................................................... 13-15
13.3.2Saving screen images to the memory card..................................................................... 13-16
14INSTALLING THE SJ-210 WITH OPTIONAL ACCESSORIES .......................................................... 14-1
15MAINTENANCE AND INSPECTION OF SJ-210 ................................................................................ 15-1
15.1Daily Care ..................................................................................................................................... 15-1
15.2Retracting the Detector............................................................................................................... 15-3
15.3Replacing the Built-in Battery Pack........................................................................................... 15-5
16TROUBLESHOOTING ......................................................................................................................... 16-1
16.1System Operation........................................................................................................................ 16-1
16.2Measuring Operation................................................................................................................... 16-2
16.3Calculation Results ..................................................................................................................... 16-3
16.4Outputting Measurement Results .............................................................................................. 16-4
17PRODUCT SPECIFICATIONS............................................................................................................. 17-1
17.1Detector ........................................................................................................................................ 17-1
17.2Drive.............................................................................................................................................. 17-1
17.3Display Unit .................................................................................................................................. 17-2
17.3.1Compatible roughness standard........................................................................................ 17-2
17.3.2Condition settings ............................................................................................................... 17-2
17.3.3Cutoff lengths/sampling lengths, number of sampling lengths,
and sampling interval .......................................................................................................... 17-3
17.3.4Upper limit of motif lengths/evaluation lengths, number of sampling lengths,
and sampling interval .......................................................................................................... 17-3
17.3.5Parameters and roughness standards/evaluation profiles ............................................. 17-4
17.3.6Measurement range and resolution ................................................................................... 17-5

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17.3.7Traversal length ................................................................................................................... 17-5
17.4Power Supply............................................................................................................................... 17-6
17.5Temperature/Humidity Range .................................................................................................... 17-6
17.6External Dimensions and Mass ................................................................................................. 17-6
17.7Optional Accessories.................................................................................................................. 17-7
17.8Consumables............................................................................................................................... 17-9
17.9SPC Output Specifications.......................................................................................................17-10
17.10Contact Connector Specifications............................................................................................17-11
17.11Connection Specifications with a Personal Computer ..........................................................17-11
17.12RS-232C Communication Specifications................................................................................ 17-12
18REFERENCE INFORMATION ............................................................................................................. 18-1
18.1Roughness Standard .................................................................................................................. 18-1
18.1.1Evaluating based on JIS B0601-1982 ................................................................................ 18-1
18.1.2Evaluating based on JIS B0601-1994 ................................................................................ 18-2
18.1.3Evaluating based on VDA ................................................................................................... 18-3
18.1.4Evaluation based on JIS B0601-2001 and ISO.................................................................. 18-4
18.1.5Evaluating based on ANSI .................................................................................................. 18-6
18.2Evaluation Profiles and Filters................................................................................................... 18-7
18.2.1Evaluation profiles............................................................................................................... 18-7
18.2.2Filters .................................................................................................................................. 18-10
18.2.3Differences in filter characteristics.................................................................................. 18-13
18.2.4Amplitude characteristics of 2CR and GAUSS (Gaussian) filters ................................ 18-14
18.3Mean Line Compensation......................................................................................................... 18-15
18.4Traversal Length........................................................................................................................ 18-16
18.5Definitions of the SJ-210 Roughness Parameters................................................................. 18-19
18.5.1Ra (JIS1994, JIS2001, ISO1997, ANSI, VDA, Free): Arithmetic mean of roughness,
Ra (JIS1982): Arithmetic mean deviation of roughness ................................................ 18-19
18.5.2Rq (JIS2001, ISO1997, ANSI, VDA, Free): Mean square of roughness......................... 18-19
18.5.3Rz (JIS2001, ISO1997, ANSI, VDA, Free), Rmax (JIS1982),
Ry (JIS1994, Free): Maximum height ............................................................................... 18-20
18.5.4Rp (JIS2001, ISO1997, ANSI, VDA, Free), Rpm (ANSI): Tallest peak ............................ 18-21
18.5.5Rv (JIS2001, ISO1997, ANSI, VDA, Free): Maximum valley depth ................................ 18-21
18.5.6Rt (JIS2001, ISO1997, ANSI, VDA, Free): Maximum roughness.................................... 18-21
18.5.7R3z (Free): Third-level height ........................................................................................... 18-21
18.5.8Rsk (JIS2001, ISO1997, ANSI, VDA, Free): Skewness (degree of asymmetry)............ 18-22
18.5.9Rku (JIS2001, ISO1997, ANSI, VDA, Free): Kurtosis ...................................................... 18-23
18.5.10Rc (JIS2001, ISO1997, ANSI, VDA, Free): Average height ............................................. 18-24
18.5.11Pc (JIS1994, Free), RPc (ANSI): Peak count ................................................................... 18-24
18.5.12RSm (JIS1994/2001, ISO1997, ANSI, VDA, Free): Mountain and valley mean width ... 18-25
18.5.13S (JIS1994, Free): Mean width of local peak ................................................................... 18-27
18.5.14HSC (Free): High-spot count ............................................................................................ 18-28
18.5.15Rmax (ANSI, VDA), Rz1max (ISO1997): Maximum height ............................................. 18-29
18.5.16RzJIS (JIS2001, Free), Rz (JIS1982, 1994): 10-point mean roughness......................... 18-30

No. 99MBB122A
x
i
i
18.5.17Ppi (Free): Peak count ....................................................................................................... 18-30
18.5.18Δa (ANSI, Free): Slope of the arithmetic mean (angle of the mean slope) .................. 18-30
18.5.19RΔq (ISO1997, JIS2001, ANSI, VDA, Free): Mean square slope
(angle of the mean square slope)..................................................................................... 18-31
18.5.20lr (Free): Expansion length ratio....................................................................................... 18-31
18.5.21mr (JIS2001, ISO1997, ANSI, VDA, Free): Material-ratio-length rate............................. 18-31
18.5.22mr[c] (ISO1997, JIS1994, 2001, VDA, Free), tp (ANSI): Material-ratio length rate........ 18-32
18.5.23δc (JIS2001, ISO1997, VDA, Free), Htp (ANSI): Slice-level difference (plateau ratio) . 18-33
18.5.24tp (ANSI): Material-ratio length rate ................................................................................. 18-33
18.5.25Htp (ANSI): Slice-level difference (plateau ratio)............................................................ 18-33
18.5.26Rk (JIS2001, ISO1997, VDA, Free): Enabled-material-ratio roughness
(center height) .................................................................................................................... 18-34
18.5.27Rpk (JIS2001, ISO1997, VDA, Free): Initial abrasion height (peak height)................... 18-35
18.5.28Rvk (JIS2001, ISO1997, VDA, Free): Valley depth........................................................... 18-36
18.5.29Mr1 (JIS2001, ISO1997, VDA, Free): Material-ratio length rate 1
(upper relative-material-ratio length) ............................................................................... 18-37
18.5.30Mr2 (JIS2001, ISO1997, VDA, Free): Material-ratio length rate 2
(lower relative-material-ratio length)................................................................................ 18-38
18.5.31A1 (JIS2001, ISO1997, VDA, Free): Peak area ................................................................. 18-39
18.5.32A2 (JIS2001, ISO1997, VDA, Free): Valley area ............................................................... 18-40
18.5.33Vo (Free): Volume measure............................................................................................... 18-41
18.5.34BAC: Material-ratio profile ................................................................................................ 18-42
18.5.35ADC: Amplitude distribution curve .................................................................................. 18-43
18.6Motif-related Parameters .......................................................................................................... 18-44
18.6.1How to obtain roughness motifs ...................................................................................... 18-44
18.6.2Roughness motif parameters ........................................................................................... 18-48
18.6.2.1R (JIS2001, ISO1997): Roughness motif mean depth............................................. 18-48
18.6.2.2Rx (JIS2001, ISO1997): Roughness motif maximum depth ................................... 18-48
18.6.2.3AR (JIS2001, ISO1997): Roughness motif mean length ......................................... 18-48
Service Network

No. 99MBB122A 1-1
1 SJ-210 OVERVIEW
This section explains the structures and the features of the SJ-210.
1.1 Outline of the SJ-210
The Surftest SJ-210 is a shop-floor type surface-roughness measuring instrument, which
traces the surfaces of various machine parts, calculates their surface roughness based on
roughness standards, and displays the results.
■SJ-210 roughness measurement process
A pick-up (hereinafter referred to as the “stylus”) attached to the detector unit of the
SJ-210 traces the minute irregularities of the work piece surface. The vertical stylus
displacement during the trace is processed and digitally displayed on the liquid crystal
display of the SJ-210.
Measurement with the SJ-210, Connection to related equipment
AC adapter
(The instrument can also be
powered by the built-in battery.)
SJ-210
DP-1VR
㧔optional㧕
Printer
㧔optional㧕
Work
piece
Direction of detector motion
Work-piece surface
Stylus
1.The detector’s stylus traces
the work piece surface
(measurement surface).
2.The up-and-down motion of the stylus
tracing the work piece is converted
into electrical signals.
3.The electrical signals are subject to
various calculation processes.
Print and analyze
measurement
results and saved
data
Print measurement
results and saved
data
4.Calculation (measurement)
results are displayed

No. 99MBB122A
1-2
■Features of the SJ-210
Designed to be convenient to carry
The SJ-210 has a lightweight (0.5 kg) design for excellent portability. In addition, it is
made compact so that it can be held and operated in one hand. The built-in battery
makes it easy to perform roughness measurement on the shop floor or other sites
where there may be no AC power supply.
NOTE • No power is drawn from the battery while the instrument is supplied power via the AC
adapter. For more information about the built-in battery, refer to 3.4.1, “Recharging the
built-in battery”.
Wide measurement range and various roughness parameters.
Has a maximum range of 360m (-200m to +160m), and can display various
roughness parameters about the surface's roughness.
Auto-sleep function to save power
With auto-sleep set to ON under operation on the built-in battery, the SJ-210
automatically turns the power off (enters the auto-sleep state) when it is not in
operation for more than a certain time even when the power is on. It is possible to set
the length of time that the SJ-210 waits before entering the auto-sleep state. The
SJ-210 still retains the set measurement conditions and the measurement results in
memory even when the power is turned off.
Color monitor with the display backlight and external output functions
When the display backlight is turned on, measurement results are displayed on the
color monitor clearly and vividly even when the SJ-210 is used in a dark place. These
measurement results can also be output externally as SPC (Statistical Process
Control) data. When connected to a personal computer, the SJ-210 can be remotely
controlled (for output or measurement commands) via the RS-232C or the USB
communication interface.
Measurement result saving function
The SJ-210 can save measurement results in the main unit up to 10 cases of
measurements. Using a memory card (optional), the SJ-210 can save the
measurement conditions up to 500 cases and the measurement data up to 10000
cases of measurements. The SJ-210 also can load the saved data to display on the
color monitor and print the data.
Compatible with various roughness standards
The SJ-210 outputs measurement results conforming to a variety of roughness
standards, including JIS (JIS-B-0601-2001, JIS-B-0601-1994, JIS-B-0601-1982),
VDA, ISO-1997, and ANSI.

1. SJ-210 OVERVIEW
No. 99MBB122A 1-3
■Features of the SJ-210 (detector retracting type)
Detector retraction function
For the SJ-210 detector retracting type, the detector extends outwards without
contacting the measurement surface. Thereby, the detector can be set up for
measurement without the detector tip being in contact with a work piece.
NOTE • Unless otherwise noted, this manual gives common information about the SJ-210
(standard type) and SJ-210 (detector retraction type).
■Features of the SJ-210 (transverse tracing drive type)
Detector transverse tracing drive function
For the SJ-210 transverse tracing drive type, the detector moves horizontally. Thereby,
the detector can be set up for roughness measurement on a work piece that has
limited dimensions (e.g., crankshafts).
NOTE • Unless otherwise noted, this manual gives common information about the SJ-210
(standard type) and SJ-210 (transverse tracing drive type).

No. 99MBB122A
1-4
1.2 Standard SJ-210 Configuration
This section explains the standard configuration, the standard set, and typical uses of the
optional accessories.
■SJ-210 standard type: Standard configuration
(set no.178-560-02: measuring force 4 mN/178-560-01: measuring force 0.75 mN)
Check that the purchased package contains all the products shown in the following figure.
Caution
• Only use the supplied AC adapter for this instrument. Using the adapter with equipment
other than the SJ-210 may cause damage to the adapter or equipment.
Display Unit
No.178-252
Drive/detector unit
Drive unit
No.178-230-2
Detector
No.178-390 (Measuring force: 4 mN)
No.178-296 (Measuring force: 0.75 mN)
Carrying case
No.12BAK699
Connection cable (1 m/40 in)
No.12BAA303 AC adapter
No.12BAK728 Power cord set
Precision roughness
specimen (with case)
No.178-601(mm)
No.178-602(inch/mm)
Calibration stage
No. 12BAK700
Operation
manual
No. 99MBB122A
Quick reference
manual
No. 99MBB123A
Display protection sheet
No.12BAK820
Standard accessory

1. SJ-210 OVERVIEW
No. 99MBB122A 1-5
■SJ-210 detector retracting type: Standard configuration
(set no.178-562-02: measuring force 4 mN/178-562-01: measuring force 0.75 mN)
Check that the purchased package contains all the products shown in the following figure.
Caution
• Use the supplied AC adapter for this instrument only. Using the adapter with equipment
other than the SJ-210 may cause damage to the adapter or equipment.
NOTE • Unless otherwise noted, this manual gives common information about the SJ-210
(standard type) and SJ-210 (detector retraction type).
Display Unit
No.178-252
Drive/detector unit
Drive unit
No.178-235
Detector
No.178-390 (Measuring force: 4 mN)
No.178-296 (Measuring force: 0.75 mN)
Carrying case
No.12BAK699
Connection cable (1 m/40 in)
No.12BAA303 AC adapter
No.12BAK728 Power cord set
Precision roughness
specimen (with case)
No.178-601(mm)
No.178-602(inch/mm)
Calibration stage
No. 12BAK700
Operation
manual
No. 99MBB122A
Quick reference
manual
No. 99MBB123A
Display protection sheet
No.12BAK820
Standard accessory