Clearance
Clearance is a term commonly used in inductive and photoelectric sensors.
Inductive sensors must not mutually have an impact on each other. That's why a minimum distance (A) between devices diameter (D) must exist. The size of (A) depends on the size of (D); they have a direct correlation. It means that the more the device's diameter (D), the more the minimum distance (A) should be.
Photoelectric sensors must not also mutually have impact on each other. So, a minimum distance "a" between them must exist. Such a distance is highly reliable on the model of the photoelectric sensor and the actual sensitivity setting.
The minimum distance "a" between diffuse sensors is shown in the schematic image below.
In the following image, you can see the minimum distance “a” considered between reflex sensors.
Finally, you can observe the minimum distance “a” between through-beam photoelectric sensors in the image below.
FIBER-OPTIC AMPLIFIERS
The value “a” highly relies on the specific type of fiber used.
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