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Installation and Assembly
optoNCDT ILR2250
5.1.3
Interferences
5.1.3.1 Ambient Light
The optoNCDT ILR2250 sensors are very good at suppressing ambient light thanks to their in-built optical interference
filter. Nevertheless, highly reflective targets can cause errors on account of the glare caused by the strong reflections. If
this happens, a less reflective surface should be used. The ideal target is white, slightly shiny and with a smooth surface.
If ambient light is directly incident into the sensor or onto the target, these areas should be shielded.
5.1.3.2 Thermal Influences
When the sensor is commissioned, a warm-up time of at least 5 minutes is required to achieve uniform temperature
distribution in the sensor.
Rapid temperature changes are not detected immediately due to the damping effect of the sensor’s heat capacity.
5.1.3.3 Mechanical Vibrations
If a high degree of accuracy or a long range is required, the sensor and target must be mounted on a stable surface that
is damped against vibrations.
5.1.3.4 Motion Blur
A constant travel movement of up to 1.6 m/s is possible in all cases. Targets that move faster or that are not very reflec-
tive can cause motion blurring.
5.1.3.5 Angular Influences
Target tilt angles around both the X and Y axis of less than 5° in the case of diffuse reflection only cause problems with
surfaces that produce strong direct reflection.
In principle, angular behavior during laser distance measurement is also affected by the reflective properties of the target
surface.
