Light curtains protected height – Determination criteria

The following calculation, for the correct definition of the light curtains protected height are related to these models of light curtains:

  • model: EOS 152 A
  • model: EOS 151 A
  • model: EOS 152 A
  • Nominal protected height: 160 mm
  • Resolution: 20 mm
  • Numbers of beams: 15
  • Lens diameter: 10 mm

In order to keep in account the dimension of the “Test Rod” (resolution), it is necessary to add 10 mm for each side to the Z dimension.

Protected height = 150 + 10 + 10 = 170 mm.

This value is conventionally rounded to 160 mm (Nominal protected height).

We can use the same nominal protected height value (160 mm) for all other resolutions.

  • model: EOS 151 A
  • Nominal protected height: 160 mm
  • Resolution: 14 mm
  • Numbers of beams: 15
  • Lens dimensions: 10 x 4 mm

In order to keep in account the dimension of the “Test Rod” (resolution), it is necessary to add 10 mm for each side to the Z dimension.

Protected height = 144 + 10 + 10 = 164 mm.

This value is conventionally rounded to 160 mm (Nominal protected height).

You can see that we can use the same nominal protected height value (160 mm) also for the 14 mm resolution.