KEYENCE LK-G Series - Manual (Page 5)

3 LK-G-M-NO0-E
Influence of dust or dirt
The measurement may fluctuate due to dirt, dust or fluid such as water or oil in the following cases:
• Adhesion on the protection glass: Blow the dirt off with clean air. If dirt persists, wipe
the glass surface gently using a soft cloth moistened with alcohol.
• Adhesion on the surface of the measuring target: Blow the dirt off with clean air or
wipe it off.
• Intrusion of floating or sprinkled dust or dirt into the light-axis range: In this case, take
corrective action with a protective cover or air purge.
Notes
Influence of vibration
When the measuring target is vibrating, the measured value may fluctuate. In this case,
increase the average number of times of measurement to achieve a more accurate value.
Measuring target
The measured value may fluctuate if the shapes or surfaces of the measuring targets vary. In
this case, use a known target and perform appropriate correction using the calibration function.
Handling
Do not wipe with a wet cloth, benzene, or thinner. Doing so may change the color or shape
of the unit. If the unit has much dirt on it, wipe it off with a cloth moistened with a mild
detergent, then wipe with a soft dry cloth.
Effect of atmospheric motions
Slow atmospheric motions may affect the measurement and result in fluctuation of the measured value.
In such a case, take the following countermeasures.
• Enclose the measurement portion with an appropriate enclosure.
•
Agitate the air between the measurement portion and the workpiece more strongly with a fan.
Precautions on CE Marking
The LK-G Series conforms to the EMC Directive subject to the conditions that the following
requirements are satisfied. In order to use this equipment in the EU countries, be sure that
the following requirements have already been satisfied beforehand.
The applicable standards are explained below.