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.
![](https://cdn11.bigcommerce.com/s-sgprcd6/images/stencil/original/image-manager/clearance-1-.png?t=1661941930)
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.
![](https://cdn11.bigcommerce.com/s-sgprcd6/images/stencil/original/image-manager/clearance-2-.png?t=1661942184)
In the following image, you can see the minimum distance “a” considered between reflex sensors.
![](https://cdn11.bigcommerce.com/s-sgprcd6/images/stencil/original/image-manager/clearance-3-.png?t=1661942468)
Finally, you can observe the minimum distance “a” between through-beam photoelectric sensors in the image below.
![](https://cdn11.bigcommerce.com/s-sgprcd6/images/stencil/original/image-manager/clearance-4-.png?t=1661942575)
FIBER-OPTIC AMPLIFIERS
The value “a” highly relies on the specific type of fiber used.
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