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Designed to mate naturally with any standard security
panels to facilitate "perimeter security"
within a total security package. The low current draw, 12 volt power input
requirements, and advanced operational algorithm provide a stable addition
to all security systems
However, even when installed as a "Stand Alone"
operational package it is a awesome security instrument, and is especially
efficient by keeping intruders out of your property before they can do any
damage, and most of the time makes additional security devices redundant.
Battery Powered for 24-7 operation,
even with
power failures.
The 30 ma power draw can be easily supplied
directly
from a
"standard"
security control panel.
WEED ALERT
®:
-
Adjustable Voltage Setting:
1,500 volts to 8,000 volts with a specific separate, and isolated output when
the voltage drops past the pre-adjusted voltage level, it will alert the user to inspect
and/or clean the fence before the voltage becomes ineffectual and
therefore useless. This feature is unique to the Electric Fence monitor/sensor
OPERATIONAL PARAMETERS:
-
Input Power Requirements:
12 to 24 volts DC
-
Power Usage: The input
power usage is 0.25 watts
-
High Voltage Input Pulse:
200 volt to 25,000 volt
-
Pulse Width Accepted: 50
microseconds to 10 milliseconds
-
Pulse Period Accepted: 5
hertz to 0.5 hertz (5 pulses/sec to 2 seconds) between pulses
-
Maintenance Output: Contact
closure rated 0.5 amps @ 60vdc and 100 vac (This is sufficient for most piezo
sounders) Maintenance voltage level is variable from 1.5kv to 8kv input
-
Voltage Loss Output:
When pulse voltage is less than 0.2kv
Contact closure rated 0.5 amps @
60vdc and 100 vac
(most sirens and loud alarms
will require a power contactor/relay to provide for sufficient current
switching)
-
Automatic Reset: Both the
"Weed Alert" and "Alarm" functions automatically reset when voltages are
restored. For security purposes, a latching circuit or relay to maintain
the alarm is recommended for some applications.
INDICATING LIGHTS (LED's):
-
Green
LED flashes for every high voltage pulse that is a higher voltage than
the set-point or maintenance required voltage.
-
Yellow/Amber LED indicates that the high voltage pulse has
dropped below the "set-point" voltage for a continuous 100
seconds, and your fence requires
maintenance. Also the low voltage contacts will close. Clearing the
grass and weeds from the fence usually clears this indication unless
there is another problem.
-
Red
LED indicates that there is a loss of voltage and immediate action
should be taken to preserve the integrity of your fence and protect your
property and
stock.
TERMINAL CONNECTIONS:
-
The relay contacts are voltage
isolated which provides versatility and will not interfere with other
operational components.
-
terminals 1 & 2 are the "No
Voltage" contacts and correspond to the RED indicator
-
terminals 3 & 4 are the "Low
Voltage" contacts and correspond to the YELLOW indicator
-
terminals 5 & 6 are the power
input has is to be connected to a power source of 12 to 24 volts DC. A
12 volt battery or AC adapter. Generally we advise to install with a 12
volt battery connected to a continuous charging or "smart" battery
charger. This will provide protection and monitoring even during utility
losses. A fully charged 12 volt- 7amp-hour battery will provide power
for the unit in excess of 3 days before requiring recharging.
-
An Installation and operation
instruction booklet are included with each sensor
-
A circuit layout is printed on the
inside of the sensor cover.
OPERATION:
This high voltage sensor takes an electric fence
charger pulse and analyzes it for peak voltage, pulse width and period.
The RG7781 can accurately measure voltage pulses from almost any fence
charger or pulse source, including the spark voltage on a gasoline engine.
The design algorithm used in
this device was determined for stability, longevity, and reliability under
a wide set of usage parameters. (patents applied and pending )
The green light will flash for
every pulse that is higher than the maintenance voltage. The maintenance
threshold voltage is set at 6kv at the factory.
This maintenance voltage
setting is adjustable from 1.5kv to 8kv. If flora (grass, bushes, limbs,
and leaves) partially load or partially short out the fence voltage and reduce the
effective pulse voltage to below the adjustable maintenance level voltage
set point, then the yellow LED will light and the maintenance contacts
will close. The maintenance function has an approximate 100 second delay
to avoid false alarms. If the grass or limb is blown off or removed and
the charger pulse voltage is restored, then the maintenance alarm will
reset itself and the maintenance contacts will open.
When the
pulse voltage drops or becomes less than 0.2 kv, the "no voltage"
contacts will close. There is a factory set delay of 6 seconds
(adjustable to 55 seconds) before the red LED will light and the
alarm contact close to eliminate "false alarms". The algorithm used in
this circuit also eliminates false alarms from reverse pulses that may
occur from close proximity lightening strikes. If the voltage drop is
intermittent the circuit will reset itself. (For some security
applications, a latching relay contact may be desired on some output
relays.)
This device
is designed for long life with ease and consistency of operation and all
units have a two
(2) year warranty including lightening damage.
WARRANTY:
Each unit is unconditionally guaranteed for a
period of two years (24 months) from the date of retail sale. Sales slip
shall accompany each returned unit. We reserve the right to either repair
or replace the unit at our discretion. Failed units can be returned to the
place of purchase or to our receiving office.
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