Chapter 5 - Alarm Operation - Garnet SeeLeveL Special 809-DM User Manual

CHAPTER 5 - ALARM OPERATION

T
here are are four alarm sources which operate three alarm
outputs:
1. A dispense alarm which operates the dispense alarm output
relay. This relay has normally open contacts that close when
the alarm is active. The contacts can be wired to 12 volts or
ground to activate a sounder, horn, light, or valve control. The
contacts are rated at 20 amps.
2. A rising level alarm and an overfill warning alarm which share
a warning alarm transistor output.
provides a connection to ground when either alarm is active.
It can also be connected to a horn or light. The transistor is
rated at 1 amp.
3. An overfill shutdown alarm which operates the overfill
shutdown output relay. This relay has normally open contacts
that break the circuit when the alarm is active. These contacts
can be wired to 12 volts or ground to perform a shut down
function. The contacts are rated at 20 amps.
The application of these outputs is up to the user, any one of them
may be ignored or connected to external controls.
The dispense alarm is used to monitor how much product is being
dispensed by the operator. The desired amount to be dispensed
is entered into the gauge with the front panel buttons, and when
the tank level drops to the point where that amount has been
dispensed from the tank the dispense alarm will be triggered. This
alerts the operator to stop dispensing at that point. The dispense
alarm output relay is usually connected to a sounder and/or a light
to provide audible and/or visual indication of the alarm. Operation
of the dispense alarm is independent of PTO status.
To set the amount to dispense, press the UP and DOWN buttons
at the same time.
ALAr", release the buttons and the top right display will change
to 0 showing the amount to be dispensed, and the bottom left
display will show the trip point, which will read the current level
right now.
Use the UP button to increase the amount to be dispensed, shown
on the top right display. The bottom left display will show the
changing alarm trip point. If you go too far, use the DOWN button
to reduce the dispense amount. Press and hold the UP or DOWN
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Within 1 second the displays will show "SEt
This transistor output
809-DM Manual