hours.
b. The sensor shall be equipped manual and an automatic test alarm output.
The test indicator shall not be visible or audible during normal
operations. When active, the test indicator shall annunciate when the
sensor detects an intruder. The alarm indication may be located within the
sensor or as a separate device. The unit shall include tamper protection
for operating parameters to include a tamper connection providing an
independent tamper output, separate from the alarm output. The alarm
output shall be selected for Normally Open or Normally Closed.
2.6.11
Capacitance Proximity Sensor
The capacitance sensor shall detect the change in capacitance of at least
20 picofarads between an insulated asset and ground. The sensor shall
detect a standard intruder approaching or touching the protected asset.
Upon detecting such a change, the sensor shall transmit an alarm signal to
the alarm annunciation system. The sensor shall be able to protect
multiple assets. The sensitivity of the sensor shall be adjustable by
controls within the sensor. The controls shall not be accessible when the
sensor housing is in place. Insulator blocks shall be provided for each
asset to be protected by the sensor.
2.6.11.1
Test Indicator, Capacitance
The sensor shall be equipped with an LED walk test indicator. The walk
test indicator shall not be visible during normal operations. When
visible, the walk test indicator shall light when the sensor detects an
intruder. The sensor shall either be equipped with a manual control,
located within the sensor's housing, to enable/disable the test indicator
or the test indicator shall be located within the sensor housing so that it
can only be seen when the housing is open or removed.
2.6.11.2
Remote Test, Capacitance
A remote test capability shall be provided. The remote test hardware may
be integral to the sensor or a separate piece of equipment. The remote
test shall be initiated when commanded by the alarm annunciation system.
The remote test shall excite the sensing element and associated electronics
causing an alarm signal to be transmitted to the alarm annunciation system.
The sensor stimulation generated by the remote test hardware shall simulate
a standard intruder moving within the sensor's detection pattern.
2.6.12
Video Motion Sensor (Interior)
**************************************************************************
NOTE: Video motion sensor systems require inclusion
of Section 16751A CLOSED CIRCUIT TELEVISION SYSTEMS
in the project.
**************************************************************************
The video motion sensor shall detect changes in the video signal within a
user defined detection zone. The system shall detect changes in the video
signal corresponding to a standard intruder moving within the defined
detection zone and wearing clothing with a reflectivity that differs from
that of the background scene by a factor of 2. All other changes in the
video signal shall be rejected by the sensor. Upon detecting such changes,
the sensor shall transmit an alarm signal to the alarm annunciation system.
The sensor shall include the controls and method needed by the operator to
SECTION 13720A
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