Garnet SeeLevel II 900-D4S Single Manual page 5

IMPORTANT NOTICE: SENDER BAR LIMITS OF RESISTIVITY
The temperature of the product in the tank should be limited to
approximately +90°C (+194°F). Damage to the float and sender
bar can occur if this value is exceeded.
The float and tube used in the manufacturing of the sender bar
is polyethylene. It should be noted that certain corrosive
products, as well as high concentrations of acid products, may
attack the polyethylene and cause perforations to develop.
It is the operator's responsibility to determine the products
compatibility with the sender bar.
WARNING: Perforation of the sender bar or heat damage is not
warrantable.
The Fibre Optic Cable: The LED on the sender is connected to
a plastic fibre optic cable which carries the information to the
display. The fibre is used to maintain electrical isolation between
the sender bar and the display, this way an electrical spark cannot
occur in the tank, so no explosion hazard can exist with flammable
liquids. The fibre optic cable is housed in a conduit for protection,
and it can be disconnected at both ends for servicing. The type
of fibre used has a 1.0 mm core diameter, and an outer jacketed
diameter of 2.2 mm. It can be cut with a sharp knife; no stripping
or other special preparation is needed.
The Display: The display receives the optical information from
the sender, translates the signal into volume and temperature
information to show to the user, generates 4-20 mA or 1-5V and
digital signals for remote communication, and controls the alarm
outputs.
Display LCDs: The display has 4 separate LCDs to show information.
These LCDs have excellent daytime visibility, and have a backlight
to allow night viewing as well. The backlight turns on whenever
the ENTER/LIGHT button on the keypad is pressed.
The lower left LCD shows the temperature of the product. It is
the average of all of the sensors which are below the fluid level,
so the temperature of the air above the fluid has no effect on the
reading. The display can be programmed via the keypad to read
out in degrees Fahrenheit or Celsius.
The upper left LCD shows the inches of level of the fluid. The upper
right display shows the volume of the fluid, the four numbers can
be programmed to show any volume units (for example, barrels),
900D4S Manual Page 5