TM 5-6350-275-24&P
SENSORS CHARACTERISTICS, CAPABILITIES, AND FEATURES (Cont'd)
Exterior Sensors
Exterior Microwave Motion Sensor (EMMS) - A bistatic exterior microwave perimeter intrusion detection sensor. In
typical application is located near or between fence lines, and detects motion in a specified area, called a detection
zone. This detection zone is established by the transmitter sending continuous microwave signals to the receiver.
Any motion within the detection zone causes a variation in the received signal strength, which when processed will
generate an intrusion notification. The EMMS is a bistatic exterior microwave perimeter intrusion detection sensor.
In typical application it is located near or between fence lines. The sensor protects a minimum of 100 meters of
fence line and detect intruders crossing the detection zone. The transmitter and receiver units are mounted in a
waterproof enclosure.
Exterior Infrared Perimeter Sensor (EIPS) - A pedestal mounted, active infrared intrusion sensor consisting of a
transmitter and receiver in two outdoor environment post type housings. The sensor alarms when an infrared
beam between the transmitter and receiver is interrupted or beam modulation is disturbed. The EIPS uses
synchronized Unique Quad beams to reinforce the range and stability in severe weather conditions. The system
uses sixteen beam paths to help eliminate nuisance alarms caused by birds, falling leaves and small animals, as
all beams must be broken simultaneously to initiate an alarm. The system uses four high power synchronized
transmitters that provide a maximum beam arrival distance ten times the rated protection distance. This allows for
reliable operation in heavy rain, fog or other poor weather conditions. Four synchronized receivers incorporate
automatic gain control circuitry to further enhance bad weather operation. The optical system of both transmitter
and receiver can be rotated a full 180 degrees which allows for side aiming. The system has built-in viewfinder for
optical alignment and the receivers are equipped with an integral sounder for audible alignment. The receivers
uses LEDs for visual indicators to set the receiver sensitivity.
Fence Mounted Vibration Sensor (FMVS) - A chainlink fence mounted sensor that assures continuous detection
coverage across the full span of the fence panels, including the fence post. It consists of a sufficient number of
vibration-detecting transducers to detect the mechanical vibrations caused by intruders climbing, pulling, tugging,
or cutting any part of 200 meters of fence paneling. The FMVS senses vibrations that occur within a 3 to 45 foot
radius of where it is mounted. The piezoelectric sensor detects vibrations and converts these vibrations into
electrical signals. The sensor offers protection against hammering, drilling, cutting tools, thermic lances, diamond
disk drills, explosion, and more.
Taut Wire Fence Sensor(TWFS - Detects the movement or the increase in length of the taut wire, whenever force
is applied to any area between the sensor post. The sensor will detect any direction in movement of the fence and
issue an alarm back to the processor system. The TWFSs are housed inside selected area fence posts. The
sensor will detect any type of intrusion to include cut or open wires and issue an alarm back to the processor which
will identify the location of the attempted entry. Normally double-strand steel barbed wire is used to transfer a
movement from the point of intrusion to the sensor.
Ported Coaxial Cable Sensor (PCCS) - Is a buried line sensor that detects intruders crossing a detection zone
established by transmit and receive cables buried in parallel along a perimeter. A disturbance in the
electromagnetic field established between the cables exceeding a predetermined threshold causes the sensor to
alarm. With line amplifiers, the sensor is capable of protecting 1600 meters of perimeter. Without the amplifiers,
the sensor is capable of protecting 800 meters of perimeter. The PCCS consists of two ported coaxial cables
buried 4 to 6 inches below the surface and approximately 84 inches apart. The H-field sensor cables may be
buried in or under paved surfaces. The cables are connected to a transmitting unit at one end and a receiving unit
at the other end. The detection pattern width is adjustable up to 15
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