Mitsubishi Electric MELSENSOR MELSEC iQ-R MH11H01A0LNA, Руководство пользователя

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1 BEFORE USING THE PRODUCT
1.5 Installation Method
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Measurement in narrow space or concave area
When performing measurement in a narrow space or hole, install the sensor head so that the light path from the light emitting
part to the light receiving part is not blocked.
■ When the measurement object is black, or when light intensity is insufficient
When performing measurement of black target object with low reflectance, the light intensity entering the light receiving part
reduces, and the signal obtained from the linear image sensor becomes small, resulting in a decline in resolution.
In this case, perform installing as follows to boost the received light intensity.
■ When installing the sensor head on a wall surface
To avoid multiple reflected lights on a wall surface from entering the light receiving part, install the sensor head as shown
below. In addition, when the reflectance of the wall surface is high, setting to a non-glossy black color can be effective.
■
Specular reflection installing
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Approaching the measurement object
A specular reflection component with a large reflected light amount is received,
for improved accuracy. The received light intensity is in inverse proportion to the square of the
distance from the measurement object. When the distance to the
measurement object is shortened, the received light intensity increases.
Black target
Black target