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7.3.1 Size
Size
7.3.2 Operating instructions
1) Handheld measurement
After inserting the pickup into the instrument, measure directly on the surface of the workpiece. In addition to
setting the correct measurement conditions, make sure to: keep the body of the pickup level; keep the pickup
sliding direction perpendicular to the texture of workpieces.
2) Use height stand
See the picture of height stand in section 7.2.
a. Insert the standard pickup carefully into the instrument, and then mount it on the column connectors. Lock
reliably;
b. Adjust the column carriage slightly higher. Lower it until the pickup contacts the workpiece. Be careful,
especially as the pickup contacts with the workpiece.
c. Adjust the body of pickup level and check visually. Check whether the stylus position is near the center.
d. Lift the pickup in proper direction. Wrong direction will cause damage to the pickup.
7.3.3 Calibration
1) Measure the multi-line specimen;
2) Read the Ra value;
3) Compare it with the calibration specimen.
7.3.4 Precautions
1) Be careful to plug the pickup. Do not touch the guide and the stylus, which are key parts of the instrument.
Try to hold the base of the pickup guide bracket (front body);
2) 2) After operating the pickup, place it in the package.
7.4 Curve surface pickup
Curve surface pickups are used to measure the roughness of smooth cylindrical surface with a radius greater than
3mm. Perfect approximation value can be achieved for spherical surfaces with larger radius of and other smooth
surfaces, the greater the radius of curvature, the smoother the surface, the better the measurement.
