Weighing; Filling To A Known Weight; Density Determination - Adam Equipment TBB - TRIPLE BEAM Mode D'emploi

1.3

WEIGHING

To weigh using the TBB balances, place the item to be weighed on the stainless steel pan. The
beam will move up. Adjust the weights on the 3 beams until the beam pointer is aligned with the
zero mark again. Start with the largest weight and work towards the smallest. Each weight should
be moved until the beam falls below zero then moved back one notch and then the next weight
moved.
The last weight moved will be the sliding weight on the front beam. Slide this weight until the beam
pointer aligns with the zero mark. Read the weight by adding the values for each weight. For
example 400+20+5.7 = 425.7g
If the sample is more than 610 grams it will be necessary to add a weight to the hanger on the right
side of the beam. Add the 500g counter weight first, then increase to 1kg, 1kg plus 500g or 2 of
the 1kg masses. Add these counter masses to the readings from the sliding beams to determine
the mass. Counter weights are supplied only with the TBB 2610S and TBB 2610T.
USING A CONTAINER FOR THE SAMPLE, WITH THE TBB 2610S BALANCE
If an empty beaker is placed on the scale you must first determine the weight of the empty beaker.
Then add the material to the beaker and weigh again. The weight of the material within the beaker
is the total weight minus the weight of the beaker when empty.
USING A CONTAINER FOR THE SAMPLE, WITH THE TBB 2610T BALANCE
The tare mass on the back of the beam can be used to counteract the weight of the empty
container, up to 225 grams. Set all the weights to show zero on the beams.
beaker is placed on the scale slide the tare mass along the rod until the beam pointer is aligned
with the zero mark. Then add the material to the beaker and weigh as normal. The weight of the
material within the beaker is the weight being shown by the sliding weights.
1.4

FILLING TO A KNOWN WEIGHT

Place the empty beaker on the balance and determine the weight or zero the scale (TBB 2610T).
Add the desired weight to this value to determine the final weight. Set the weights on the beam to
represent this final value. Pour the material into the beaker slowly. As the desired weight is
approached, the beam will rise. Stop filling when the beam pointer is aligned with the zero mark.
1.5

DENSITY DETERMINATION

The TBB 2610S and TBB 2610T balances are supplied as standard with three legs allowing the
balance to be raised about 185mm (7") above the surface. There is also a small hook attached to
the bottom of the TBB's weighing mechanism which allows products to be suspended via string (or
wire) into a solution in a beaker below. This allows you to first weigh the product on the stainless
steel top pan (in air) and then suspend the product in a solution using the below hook (in liquid) to
allow you to calculate the density of the product. The TBB 610S does not include the legs.
@Adam Equipment Company 2015 3 P.N. 8141, RevD Nov2015
When the empty
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