Differing minimum distance to reflective surfaces for devices with a resolution of
30 mm with weld spark guard
If a device with a resolution of 30 mm is used with the weld spark guard, the following
applies in contrast to other specifications in order to determine the minimum distance
from reflective surfaces:
1.
Determine the distance D between sender and receiver in meters (m).
2.
Read the minimum distance a in millimeters (mm) in the graph or calculate it
based on the respective formula (
).
2000
1800
1600
1400
1200
14
16
18
20
22
24
2
4
6
8
10
12
1000
800
600
400
200
0
0
D/m
a/mm
Figure 69: Diagram minimum distance to reflective surfaces for devices with a resolution of
30 mm with weld spark guard
Table 69: Formula for calculating the minimum distance to reflective surfaces for devices with a
resolution of 30 mm with weld spark guard
Distance D between sender and
receiver in m
Calculation of the minimum distance (a) from reflective
surfaces in mm
D ≤ 3 m
a = 262 mm
D > 3 m
a = tan (5°) × 1000 mm/m × D = 87,49 × 1 mm/m × D
If a device (resolution 30 mm) is used with a dynamic protective field width (large area:
0 m to 24 m) and with the weld spark guard, the following – in contrast with other
specifications – is used to determine the minimum distance from reflective surfaces:
1.
Determine the distance D between sender and receiver in meters (m).
2.
For a distance D > 6 m, calculate minimum distance a in millimeters (mm) based
on the corresponding formula (
Table 70: Formula for calculating the minimum distance to reflective surfaces for devices (resolu‐
tion 30 mm) with a dynamic protective field width (large area) with weld spark guard
Distance D between sender and
receiver in m
Calculation of the minimum distance (a) from reflective
surfaces in mm
D ≤ 6 m
a = 524 mm
D > 6 m
a = tan (5°) × 1,000 mm/m × D = 87.49 × 1 mm/m × D
Table 71: Weld spark guard ordering information
Part
Part number
Weld spark guard
2069268
ACCESSORIES
15
8021645/1EB0/2022-04-28 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTec4
155
Subject to change without notice
