58
O P E R A T I N G I N S T R U C T I O N S | safeRS3
8027489/2022-03-01 | SICK
Subject to change without notice
6 SENSOR POSITION
6.4
Calculation of range of distances
6.4.1
Introduction
The range of detection distances for a sensor depends on the inclination (
α
) and the
installation heights (
h
) of the sensor. The detection distance of each protective field
(
Dalarm
) depends on a distance
d
that must be within the range of distances allowed.
The formulas for calculating the distances are reported as follows.
WARNING
Define the optimum sensor position according to the risk assessment requirements.
6.4.2
Legend
Element
Description
Measurement
unit
α
Sensor inclination
degrees
h
Sensor installation height
m
d
Detection distance (linear)
Must be within the range of distances allowed (see
Installation configurations below
).
m
Dalarm
Detection distance (real)
m
D
1
Start detection distance (for configuration 2 and 3);
end detection distance (for configuration 1)
m
D
2
End detection distance (for configuration 3)
m
6.4.3
Installation configurations
Three configurations are possible, according to the inclination of the sensor (
α
):
l
≥ +20°: configuration 1, the field of view of the sensor never intersects the ground
l
0° or 10°: configuration 2, the upper portion of the field of view of the sensor never
intersects the ground
l
≤ -10°: configuration 3, the upper portion and the bottom portion of the field of view
always intersect the ground
6.4.4
Calculate the range of distances
The range of detection distances for a sensor depends on the configuration:
Configuration
Range of distances
1
From 0 m to D
1
2
From D
1
to 5 m
3
From D
1
to D
2
