Chapter 3 - Gauge Description - Garnet SeeLevel Special 808-P2 Important Operator Information

CHAPTER 3 - GAUGE DESCRIPTION

T
he SeeLeveL ™ gauge consists of a sender bar, a donut shaped float,
a fiber optic interconnect cable, and a display. The sender bar is
mounted vertically in the tank with the float sliding up and down around
it in accordance with the fluid level. The sender bar sends the fluid level
information via fiber optic cable to the display, which displays the level
in appropriate units and operates the alarms, Spill Stop transmitter, and
remote data transmitter.
The float contains magnets which activate reed switches inside the
stainless steel sender bar to indicate the level of the fluid. The activated
switches are detected by the microprocessor at the top of the bar. The
microprocessor operates from a long life lithium battery giving about 10
years of life. The level information is relayed through the fiber optic cable
to the display, the fiber being used to maintain electrical isolation between
the sender bar and the display, allowing operation in flammable liquids.
The display converts the level information to volume according to the
calibration programmed into it with the 817 Truck Gauge Programmer.
The calibration can be in inches or volumetric units such as cubic metres
or barrels. The tank level is shown on a backlit LCD (Liquid Crystal Display)
giving good visibility in all lighting conditions. The display circuitry and
LCD operate from a lithium battery giving nominally 8-10 years of life. The
LCD back light is powered by 12 volt truck power. The entire display is
enclosed in a Valox Betts box with a clear cover, which is durable enough
to withstand indirect road spray.
The display contains four alarms which are programmed using the 817-USB
Truck Gauge Programmer. They can be set to activate at any point in the
tank. The alarms can be used to operate the SeeLeveL SpillStop system, or
can be used to operate the two built-in alarm outputs. These outputs are
available as transistors which complete a circuit to ground and can handle
1 amp of DC current at 24 volts.
WARNING: The use of alarms is intended as an emergency backup system
W
only, and is not intended as a substitute for operator diligence during the
loading process.
The display has a SpillStop transmitter for direct connection to a Garnet
815 SpillStop ™ or 815-UHP SpillStop Ultra™ controller. The transmitter
operates in accordance with the programmed alarm points 1, 2, and 3.
This provides the user with automated horn warnings and automated
control of PTO or hydraulic pump loading to prevent product spills due to
inadvertent overfilling of the tank.
Page 6 808-P2 Manual