KEYENCE LT-9001 Series - Manual (Page 4)

2
Safety Precautions
Corrective action for noise
Do not install the LT-9001 Series near power sources or high tension cables,
otherwise noise may cause the LT-9001 Series to malfunction. Take corrective
action for noise by using noise filters, by separating these cables, by installing
insulations to the controller and to the measuring unit.
Laser safety precautions
The LT-9001 is classified as a class1 laser product by IEC60825-1. (FDA class
IIa)
• Caution - use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation exposure.
• Do not stare into the laser beam directly for a long time.
• Do not disassemble the LT-9001 Series.
The Influence of ambient temperature
A change in ambient temperature may cause measurement fluctuations. Be sure
to keep the temperature stabilized. When the ambient temperature changes 10
°C, it takes 60 minutes to equalize the distribution of the inside temperature.
Warming up
Before using the LT-9001 Series, wait approximately 60 minutes after the power is
turned on. Otherwise, the measured value may gradually fluctuate because the
circuit is not stable immediately after the power is turned on.
The Influence of dust or dirt
The measurement may fluctuate due to dirt, dust or fluid such as water or oil in
the following cases:
• On the LT-9001 optics: Blow the dirt off with clean air. If dirt persists, wipe the
glass surface gently using soft cloth soaked with alcohol.
• On the target surface: Blow the dirt off with clean air or wipe it off.
• Airborne: Build a protective enclosure with an air purge system around the
measurement area.
Influence of vibration
When the measurement target is vibrating, the measured value may fluctuate. In
this case, increase the number or times the measurement value is averaged to
achieve more accurate measurements.
Note
E LT-9001-IM