FORTEZA JSC FORTEZA FMC 24 Pro (100m, 200m, 300m)
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1.2.13. Maximum dimensions of the units without a mounting kit, mm:
-
transmitter
- 165x97x65;
-
receiver
- 165x97x65.
1.2.14. Maximum weight of Rx +Tx units with a mounting kit -1.7 kg:
1.3. Sensor components
Receiver – 1 pc
Transmitter – 1 pc
Mounting kit (MK) including:
-
bracket – 2 pcs
-
buckle – 4 pcs
Kit of tools and accessories including:
- screwdriver;
-
spanner 8x10.
User manual
Package.
1.4. Operation principle
1.4.1. The sensor is a bistatic microwave device.
The sensor principle of operation is to generate an electromagnetic field between Tx
and Rx. This field forms a volumetric detection zone in the form of a long ellipsoid of
rotation. The sensor registers changes of the field when an intruder crosses a protected area.
1.4.2. An intruder crossing the detection zone causes some changes of the signal
amplitude in Rx. The signal passes through the amplifier and is compared with the thresholds
value according to the algorithm. If the signal change on Rx input is provoked by a person
passage, then Rx generates an alarm, breaking actuating relay contacts. The signal changes
depend on: height and weight of the intruder, place of the sector crossing, its relief and speed
of the movement.
1.4.3. The signal on Rx input can be changed under the influence of other interference
factors: precipitations, vegetations, small animals, electromagnetic interference, swinging of
tree branches or gates, crossing the detection zone and which are commensurable with
intruder movements.
Other reasons, e.g. location of extensive constructions in the detection zone or near it
(fences, walls), irregularities and snow can influence on the Rx input signal. In these cases
the detection zone form is distorted because of re-reflections and interferences.
Multi thresholds operation algorithm permits to reduce the number of false alarms.
That’s why one should observe the recommendations of the subsection 2.1.
