Analog instrument
It is
possible
to
plug
in an
analog
instrumentto showthe tank
level.
In
the tableon
page
6 you
will
find four
alternatives
to choose between.
On
page
8
you will
find an
illustration showing
how to
plug
in the
instrument to Gobiu
s
’
control unit. The extra
black cable
is intended for
this purpose. We
assume
that you
have
an instrumentwith
cables
already
installed
in
your vessel
and that
you wish
to use this withGobius.
Extra lamp/buzzer
In
addition
to the Gobius
panel you may
wantto
plug in
a lampor
buzzer to
give
a
warning
when the tank is ¾
full.
You
may also
want
t
o
know when the tank is
empty.
The
illustration
on
page
8 showshow
to
plug in
this
additional
surveillance.
Tips
Werecommendthat youput a
layer
of
Vaseline, which
prevents
oxidation,
on the
plugs
that areconnectedto the control unit.The
electronics
of the product areprotected from damp. The
sensors
and the
control unit do not
resist water. Please
contact FM
Marin
for
advise
on
how to
make
Gobius
waterproof.
Furthermore, we
recommend
that
y
ou
connect
your
Gobius
via
a
500
mA fuse.
The
sensors
areset to detect
liquid levels
through tank
walls
that areof
different materials
and
thicknesses.
If the
tank’s wall thickness
is
changing
overtime
(e.g.
due to
possible contamination), you may
need
to redo the
calibration according
to the aboveinstructions.
Gobius Sensor Technology (patented)
Each sensor
consists
of two
active
p
a
rt
s
;
a
shaker
and an accelerator.
Whenthe
shaker creates
a
vibration
in the tank
wall,
the accelerator
measures
the
size
of the
vibration
and
passes
the dataon to the control
unit. The control unit then starts to
calculate in
order to
give
an exact
estimate
of whetherthe
liquid level
has
passed
the sensoror not.
Gobius requires no extra maintenance
The constructionof Gobius has
many advantages.
For
instance,
since
the
sensors
areneverin directcontact with
liquid inside
the tank,
the
y
will
not becomeworn out. Another
positive aspect
of Gobius isits
low electricityconsumption, which
is
less
than 50 mA
(12
Volts).
Gobius does not
require any extra
maintenance.
For all these tank materials and tank wall thickness
Stainless steel, steel,
1 - 3 mm
Aluminium,
2 –5 mm
Polyethylene,
4 –12mm
Fibre
Glass,
4 –8 mm
