SICK deTec4 Ex - Graph of Minimum Distance from Reflective Surfaces

Important information
DANGER
H
azard due to lack of effectiveness of the protective device
Reflective surfaces and dispersive media can prevent persons or parts of the body to
be protected from being properly reflected and, therefore, remain undetected.
b
Make sure that all reflective surfaces and objects maintain a minimum distance
from the protective field.
b
Make sure that no dispersive media (e.g., dust, fog, or smoke) are within the calcu‐
lated minimum distance from the protective field.
Determining minimum distance from reflective surfaces with automated calibration of
t
he protective field width
The minimum distance can be determined as follows:
b
Determine the distance between sender and receiver D in meters (m).
b
Read the minimum distance a in millimeters (mm) in the graph or calculate it
based on the respective formula table 6:
1000
900
800
700
600
14 16 18 20 22 242 4 6 8 10 12
500
400
300
200
100
0
0
D/m
a/mm
Figure 12: Graph of minimum distance from reflective surfaces
T
able 6: Formula for calculating the minimum distance to reflective surfaces with automatic cali‐
bration of the protective field width
Distance D between sender and
r
eceiver in m
Calculation of the minimum distance (a) from reflective
surfaces in mm
D ≤ 3 m a = 131 mm
D > 3 m a = tan (2.5°) × 1,000 mm/m × D = 43.66 × 1 mm/m ×
D
4 PROJECT PLANNING
28
O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex 8022883/2019-03-07 | SICK
Subject to change without notice