Compatibility Your Laser Scan Micrometer has been adjusted together with the ID Unit, which is supplied with the measuring unit. The ID Unit, which has the same code number and the same serial number as the measuring unit, must be installed in the display unit. This means that if the ID Unit is replaced the measuring unit can be connected to another corresponding display unit. The workpiece and measuring conditions Depending on whether the laser is visible or invisible, the workpiece shape, and the surface roughness, measurement errors may result. If this is the case, perform calibration with a master workpiece which has dimensions, shape, and surface roughness similar to the actual workpiece to be measured. If measurement values show a large degree of dispersion due to the measuring conditions, increase the number of scans for averaging to improve the measurement accuracy. Electrical interference To avoid operational errors, do not route the signal cable and relay cable of the Laser Scan Micrometer alongside a high voltage line or other cables capable of inducing noise current in nearby conductors. Ground all appropriate units and cable shields. Connection to a computer If the Laser Scan Micrometer is to be connected to an external personal computer via the RS-232C interface, ensure that the cable connections conform to the specification. Laser safety Mitutoyo Laser Scan Micrometers use a low-power visible laser for measurement. The laser is a CLASS 2 EN/IEC60825-1 device. Warning and explanation labels, as shown below, are attached to the Laser Scan Micrometers as is appropriate. Quick Guide to Precision Measuring Instruments
Laser Scan Micrometers
Re-assembly after removal from the base Observe the following limits when re-assembling the emission unit and reception unit to minimize measurement errors due to misalignment of the laser's optical axis with the reception unit.
• Alignment within the horizontal plane
a. Parallel deviation between reference lines C and D:
X (in the transverse direction)
Reference line D
Reference line C
X
b. Angle between reference lines C and D: θ x (angle)
Reference line D
Reference line C
x
c. Parallel deviation between reference planes A and B: Y (in height) • Alignment within the vertical plane
G
Reference plane B
Reference plane A
Y
d. Angle between reference planes A and B: θ y (angle)
Reference plane B
Reference plane A
y
• Allowable limits of optical axis misalignment
Distance between Emission Unit and Reception Unit
Model
X and Y
θ x and θ y
68 mm (2.68 in) or less within 0.5 mm (0.02 in) within 0.4˚ (7 mrad) 100 mm (3.94 in) or less within 0.5 mm (0.02 in) within 0.3˚ (5.2 mrad) within 0.4˚ (7 mrad) 350 mm (13.78 in) or less within 1 mm (0.04 in) within 0.16˚ (2.8 mrad) 130 mm (5.12 in) or less within 1 mm (0.04 in) 273 mm (10.75 in) or less within 1 mm (0.04 in) within 0.2˚ (3.5 mrad) 700 mm (27.56 in) or less within 1 mm (0.04 in) within 0.08˚ (1.4 mrad) 321 mm (12.64 in) or less within 1 mm (0.04 in) within 0.18˚ (3.1 mrad) 700 mm (27.56 in) or less within 1 mm (0.04 in) within 0.08˚ (1.4 mrad) 800 mm (31.50 in) or less within 1 mm (0.04 in) within 0.09˚ (1.6 mrad)
LSM-501S
LSM-503S
LSM-506S
LSM-512S
LSM-516S
G-43
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