ipf electronic PY740025, Руководство пользователя

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MANUAL [ PY740025/26 ]
•
Subject to alteration! Version: 22.10.2018
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6.5 Object to be measured
6.5.1 Smallest detectable object
For an object to be reliably detected, it must conform to the minimum object width
1
. This minimum object width
varies with the distance from the sensor.
6.5.2 Reflectivity
Bright objects are generally easier to detect than dark objects, since they are more reflective. Reflectivity is
the percentage relationship between incident and reflected light.
Definition of objects:
White object Approx. 90% reflectivity
Black object Approx. 6% reflectivity
Bright object > 18% reflectivity
Dark object 6…18% reflectivity
6.5.3 Standard object
The technical data for sensors in the data sheet refers to measurements with an ipf standard object. This
standard object is precisely defined in size, shape and color, making multiple measurements comparable.
Standard object definition:
•
White ceramic (reflectivity approx. 90%)
• Smooth, flat surface
•
Covers entire sensor measuring range
1
According to data sheet chapter 6.1
Smallest
detectable
object
Smallest detectable object close
Smallest detectable object far
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