Determining minimum distance from reflective surfaces
T
he 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 using
the respective formula to determine the minimum distance to reflective surfaces:
The minimum distance is dependent on the receiver used.
When using a receiver with a low or medium sensing sensing range
500
400
300
200
100
1 2 3 4 5 6 D/m
a/mm
Figure 11: Graph of minimum distance from reflective surfaces
T
able 1: Formula for calculating the minimum distance from reflective surfaces
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
When using a receiver with a high sensing sensing range
500
400
300
200
100
a/mm
10
11 12 D/m1 2 3 4 5 6 7 8 9
Table 2: Formula for calculating the minimum distance from reflective surfaces
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
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Subject to change without notice