Gilson Company, Inc.
Vibro-Deairator: SGA-5R & SGA-5RT
Page 4
1.0 INTRODUCTION:
The SGA-5R Vibro-Deairator automates sample agitation
in specific gravity procedures such as those described
for the AASHTO T 209 and ASTM D 2041 “Rice Test”.
This frees laboratory personnel for other duties. The unit
allows the use of three different types of pycnometers of
various sizes; heavy-wall Glass Filter Flasks (Gilson 2L
GW-75, and 4L GW-76), Aluminum Pycnometers (Gilson
2,000g SG-16, and 1,500g SG-17), and the Gilson 6,000g
SG-15 Plastic Pycnometer.
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SGA-8 Adapter Set, consisting of an upper adapter
ring and base pad.
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Set, consisting of a base adapter, and upper adapter
with foam ring.
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DO NOT
require adapters.
NOTE:
ALWAYS use the correct adapter for the se-
lected pycnometer. Failure to do so can result in injury
to the operator and damage to the pycnometer.
NOTE:
The SGA-5R has only been tested with the
Gilson Pycnometers above. It CANNOT be guar-
anteed to function properly with pycnometers from
other manufacturers.
2.0 UNPACKING & ASSEMBLY:
NOTE:
Immediately upon receipt, check the shipping
container carefully for apparent damage. If internal
or external damage is observed or suspected,
contact the freight carrier right away. Gilson can-
not be responsible for shipping damage. Save all
shipping packaging until assured that the device is
operating properly.
The Vibro-Deairator is shipped in a sturdy cardboard
box, packed in moldable foam. The top plate, as well
as two threaded height-adjustment rods with installation
nuts, plastic and metal clamping knobs threaded on, are
enclosed in the same box, but not attached. If the SGA-7
or SGA-8 Adapter Sets were ordered, they will be pack-
aged separately.
Remove the base assembly from the box and place on
a dry, sturdy and level surface and connect the power
cord. On the rear of the unit is a power entry module
with 2 amp fuses. A spare fuse is located in the fuse tray
should it be needed.
To install the adjustment rods, remove the nut closest to
the end of the rod, insert the rod through the hole in the
base plate and use two 9/16in wrenches to tighten the nuts
and secure the rod. Repeat for the opposite side.
3.0 SET
-
UP:
3.1 Glass Filter-Flasks:
Place the rubber base pad between the four rubber
bumpers on the agitator base, and then center the flask
on the pad. Place the top adapter of the SGA-8 set over
the neck of the flask, tilting as required to pass over the
tubulation. Slide the top plate over the adjustment rods,
and center the adapter between the bumpers (see Figure
1). Position the adapter/plate assembly approximately level
and adjust the black plastic knobs until there is a small
gap between the plate and the knobs. Drop the metal
speed-knobs onto the rods and tighten so that the plate
is pushed down slightly and contacts the bottom plastic
knobs. Before turning on the Vibro-Deairator always check
that both sets of knobs are secure.
NOTE:
Pycnometers must be secured but NOT
over-tightened. Over-tightening can damage the
pycnometer or result in loss of action.
3.2 Aluminum Pycnometers:
Place the pycnometer directly on the agitator base be-
tween the rubber bumpers. Slide the top plate over the
adjustment rods, and position the rubber bumpers around
the pycnometer (see Figure 2). Adjust the black plastic
knobs until there is a small gap between the plate and
the knobs. Drop the metal speed-knobs onto the rods
and tighten so that the plate is pushed down slightly and
contacts the bottom plastic knobs. Before turning on the
Vibro-Deairator always check that both sets of knobs
are secure.
NOTE:
Pycnometers need to be secured but NOT
over-tightened. Over-tightening can damage the
pycnometer or result in loss of action.
