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1.6 SPECIFICATION AND
ORDERING INFORMATION
1.6.1 DETERMINING SENSOR
DIMENSIONS
1.6.1.1 GENERAL
The dimensions of the dangerous area depend
on the particular application. The parameters
to be considered include:
-
speed of walk or arm movement
(typically 1,6m/s)
-
arm length (typically 0,85m)
-
length of stride (typically 0,7m)
-
response time of system
-
position of inactive areas
-
overtravel of dangerous parts after stop
signal is generated
A Tapeswitch pressure sensitive safety mat
system can be used as:
(a)
a combined trip and presence sensing
device
-
the device is positioned such that it
will be activated when a person enters a
dangerous area and remains activated whilst
the person is inside the dangerous area.
(b)
a presence sensing device
-
the sensor is
positioned such that it will be actuated by a
person who is inside a dangerous area.
(c)
a trip device
-
the sensor is positioned
such that it will detect a person entering a
dangerous area.
NOTE:
Tapeswitch CKP/S1 safety mats
have an inactive area around the outer
edges.
This
inactive
area
is
30
millimetres wide which means that the
dimensions of the active area (i.e. the
zone which must cover the dangerous
area) will be 60 millimetres less than the
overall dimensions of the mat, as shown
in Figure 2. This should be borne in mind
when specifying the size of mat for a
particular application.
A1
B1
C1
A
1
B
1
C
1
Active Area
= A1 x A2
Overall Mat Dimensions
= B1 x B2
Area Covered with Edging
= C1 x C2
C1
=
B1 + 126mm
C2
=
B2 + 126mm
B1
=
A1 + 60mm
B2
=
A2 + 60mm
Figure 2
-
Sensor Dimensions
