107063-11 EN FR26 GLO 800 Printed in France
5
Detection
The beam diameter (see figure 1-4) of a FF-SPS4 device is 40 mm (1.58 in.). A beam
diameter is the smallest width that will block the beam of a perimeter device.
Figure 1-4 Beam Diameter
Beam diameter = 40 mm (1.58 in.)
E
R
Response Time
The response time is the maximum time it takes the perimeter device to generate a STOP
signal after the sensing field has been interrupted. All FF-SPS4 catalog listing versions have
the same response time (20 ms).
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