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220 | Detectors and Accessories | Seismic
ISN-SM Seismic Detectors
Features
▶
24-hour surveillance of vault walls and doors, safes,
night safes, and automatic teller machines
▶
Sensitivity settings using DIP switches
▶
SENSTEC
®
sensor and signal processing system based
on microcontrollers
▶
Low-profile design
The following models belong to the ISN-SM series seismic
detectors:
Model Features
ISN-SM-50
•
4 m operating radius on concrete
•
50 m
2
monitoring area
ISN-SM-80
•
5 m operating radius on concrete
•
80 m
2
monitoring area
Each seismic detector monitors objects and surfaces, has a
low-profile design, and can be installed effortlessly, even in
tight spaces. ISN-SM seismic detectors are designed to
monitor safes, night safes, and automatic teller machines.
System Overview
When cutting and drilling through materials such as
concrete, steel, or synthetic reinforcements, deviations
from the structures' normal vibration pattern ensue. The
SENSTEC sensor converts vibration deviations into
electrical signals. The digital processing in the seismic
detector analyzes the signals and compares them to a
frequency range typical of tools used to break into safes,
night safes etc. If the signals fall within this frequency
range, the seismic detector transmits an alarm via a relay
contact.
Functions
Detection
The seismic detector recognizes vibrations caused by
explosives and tools such as diamond-tipped drills,
mechanical and hydraulic rams, flame cutters, thermal
lances, or water jet cutters.
The SENSTEC sensor and the digital signal processing
monitor a narrow frequency range, thus offering reliable
detection. The seismic detector tolerates environmental
conditions such as air movement and noise.
Sensitivity settings using DIP switches
The sensitivity settings are selected using DIP switch
settings. Select the appropriate sensitivity setting for the
application, the material, and the object, as well as any
interference present. The following settings are available:
•
Steel, 2.0 m
•
Steel, 2.5 m
•
Concrete, 4.0 m
•
User mode, with SensTool
SensTool software
SensTool software for PCs provides the following options:
•
Changing factory default settings
•
Monitoring detector performance
•
Storing information such as integrator signals
•
Selecting additional settings for detector and shock
sensitivity
Fixing device
A fixing device is available as an optional hardware
accessory for ISN-SM seismic detectors. When the system
is armed, the fixing device monitors safes and strong rooms
for attacks using thermal and mechanical tools, as well as
unauthorized opening. The fixing device components
consist of a detector plate, a door plate, and a standby
plate.
The detector plate has a monitoring microswitch and a
magnetic contact. When the system is armed, the
monitoring switch in the detector plate is closed. If the
detector is removed from the door plate, the monitoring
switch opens and triggers an alarm.
The detector can be hung on the standby plate during
working hours.
Swivel plate
A swivel plate is available as an optional hardware
accessory for the ISN-SM seismic detector. A swivel plate is
used for monitoring safes and strong rooms with exposed
keyholes. A microswitch in the swivel plate monitors
movement. Any unauthorized swivel movement immediately
triggers an alarm. When the system is armed, the swivel
plate fully covers the keyhole. When the system is disarmed,
the swivel plate swivels so it is at a 90° angle to the keyhole.
Bosch Security Systems B.V. www.boschsecurity.com
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