For professionals in quality assurance, manufacturing, and materials science, the is a cornerstone instrument for surface texture measurement. A comprehensive user manual is the single most critical tool for unlocking its full potential. This guide consolidates everything you need to know about the SV-400 and its official documentation.
measurement (relative to the drive unit's internal guide) to accurately capture waviness and stepped features. High Resolution
Keep away from heavy machinery, stamping presses, or high-traffic walkways. Use an active or passive vibration isolation table if possible. 3. Basic Operation Workflow
The Surftest SV-400 is a sophisticated instrument featuring a traversing unit, a detector (pick-up), a drive unit, and a data processing unit. Unlike basic handheld testers, the SV-400 allows for contour analysis, roughness measurement, and waviness assessment.
| | Possible Causes | Suggested Solutions | | :--- | :--- | :--- | | Inconsistent or Fluctuating Readings | Workpiece not properly seated; incorrect cutoff length selected; damaged or contaminated stylus tip; mechanical vibration; parameter misinterpretation | Re-seat the workpiece; select an appropriate cutoff (e.g., 0.8mm for milled surfaces); clean or replace the stylus; isolate the unit from vibration; verify measurement parameters in the manual. | | Device Fails to Power On | Loose power cord; blown internal fuse; faulty power supply; connection issue from previous maintenance | Check all power connections; inspect internal fuses (refer to manual for location); contact a qualified technician for power supply diagnosis. | | Stylus Skips or Drags | Excessive surface roughness; foreign debris on surface; worn or damaged stylus; traversing speed too high | Measure a smoother area; clean the surface; replace the stylus; reduce the traversing speed via the controller menu. | | Error Code Displayed | Specific internal fault (e.g., driver error, limit switch engaged) | Note the exact error code and refer to the "Error Messages" section of the user manual for the specific definition and corrective action. | | Communication Failure (RS-232C) | Incorrect baud rate; wrong parity or stop bits; faulty cable; outdated or incorrect drivers. | Consult the "Data Output" section of the manual to verify your communication settings match both the SV-400 and the receiving device. | mitutoyo surftest sv400 user manual full
Connect the drive unit cable to the rear panel of the data processing console. Plug in the power cord and turn on the main power switch. 2. Calibration Procedure
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The standard industry default for general machining. 2.5 mm: For rough castings or coarse surfaces. Evaluation Length (
A: Calibration frequency depends on usage intensity and your quality system requirements (e.g., ISO 9001). It is generally recommended to perform a calibration verification before critical measurements or at least daily. A full annual calibration by a qualified metrology lab is considered best practice. measurement (relative to the drive unit's internal guide)
Up to 800 µm (depending on the specific detector model).
The SV-400 can store up to 10 measurement conditions (Cond 0 to Cond 9). The manual provides a matrix table showing which parameters are active per condition. For example:
Gently clean the roughness specimen with a lint-free cloth. Use the stylus brush to swipe the stylus tip from only. Step 2: Position the Specimen
View the generated waveform profile. Export the numeric parameter array to a thermal printer or a connected PC database via the Mitutoyo Formtracepak software. 6. Preventive Maintenance and Care Surface contamination or building floor vibration.
This is the most reliable approach. Visit the official Mitutoyo global website and navigate to their "Support" or "Contact Us" section. Contact their technical support team directly; they are the best source for legacy documentation.
Secure your workpiece on a flat, stable surface. Use V-blocks or leveling tables if the part has an irregular shape.
Inspect cables for wear; clean the drive unit guide paths with a dry lint-free cloth.
Lower the drive unit further until the level meter reaches the center zone. Surface contamination or building floor vibration.