Adam Equipment AEA Series Manuale utente
© Adam Equipment Company 2000
Adam Equipment
DENSITY DETERMINATION KIT
for AEA and AEP
BALANCES
OPERATOR’S MANUAL
© ADAM EQUIPMENT CO. LTD.
pn. Rev. A, May 2002
© Adam Equipment Company 2000
© Adam Equipment Company 2000
3
The Density Kit allows users of the AEA series of analytical balances and the AEP Top
loading balances to determine the density of solids and liquids directly using the
internal program of the balance.
1. FEATURES
♦Easy to use - all the activities are described by a message on the display for user.
♦Reliable (all the calculations are done by the balance).
♦Speed of test (the result is shown immediately after the sample is placed into the water or
the float is placed into the liquid).
♦Accuracy (before every measurement the balance is automatically zeroed. The user also
enters the temperature of the liquid to account for density variations due to temperature or
can enter the density of the liquid directly).
♦Possibility to print the results or to send them to a PC for further analysis.
♦Universal (the same program is used for AEA and AEP balances).
© Adam Equipment Company 2000
4
2. COMPONENTS
The Density Determination kit contains all the necessary items required to determine density
using the AEA or AEP balances. The contents of the kits are slightly different depending
upon the series of balances used.
The kit consists of the following components.
1. Glass Float of known volume, with
2. string
3. hook
4. Thermometer
5. Base to support beaker
6. Beaker
7. Hanger to replace pan on balance
8. Sample pan
9. Clamp for thermometer
10. Additional weights to match pan weight (only in the AEA kit)
© Adam Equipment Company 2000
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3. INSTALLATION
•Turn on the balance and allow the displays to stabilise and show zeros.
•Take off the pan and the draft ring around the pan if the balance is equipped with
one. The balance may show an error message at this time but it can be ignored.
•Place the hanger (7) in place of the pan.
•In the AEA balance the pan weight is critical. It may be necessary to add a small
amount of weight to the vertical wires on the hanger. When the capacity tracker
shows some weight is on the pan the balance should begin operating again and
show a value on the display. Use only enough weight on the hanger wires to enable
the balance to operate.
•Place the beaker support (5) over the hanger so that it does not touch.
•Fill the beaker with either distilled water at room temperature, alcohol or another
liquid of known density. For determination of a liquid’s density add the liquid to the
beaker.
•Insert the thermometer into the liquid.
•Hang the sample support on the hanger if it is to be used.
Tare the balance. You are now ready to begin using the density program
built into the balance.
© Adam Equipment Company 2000
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4. Density measurement
The balance is capable of measuring the density of either a solid or a liquid. The balance
can be used with the Adam Equipment Density Determination Kit as described below or by
using the weigh below abilities of the balance.
4.1 Density Measurement of Solids
To determine the density of a solid it is necessary to weigh the sample while in the air and
then to weigh it while it is suspended in a liquid of known density. The balance will guide you
through the steps of this procedure using messages on the display. The type of liquid that
can be used are set by the user. It includes distilled water, alcohol and any other liquid as
long as the user knows its density.
•WATER (distilled water)
•ALCOHOL (spirit 100% +/- 0.1% in temperature 20
0
C),
•OTHER (a user supplied liquid with known density)
For water and alcohol you will be required to give the temperature, therefore the thermometer
is included in the kit.
Density checking relays on weighing a sample in the air and then in the liquid.
Result of the test is shown on the display automatically when the test if finished.
Result of measurement can be sent over the RS 232 interface to a printer or PC by
pressing the Print key.
© Adam Equipment Company 2000
7
4.2 Procedure
Enter modes menu.
Set the cursor next to
M6 Density
Enter the submenu for
M6 Density
Select the option M6 01 to choose Solid Density, Select the liquid to be used, set the
temperature for the water or alcohol, or set the density for another liquid.
With F enter submenu M6
Density (setting parameters)
Enter parameter
M6 01 Procedure Name will flash
or
Change procedure name
Save choice
© Adam Equipment Company 2000
8
Use the same method to set:
M6 02 Liquid
M6 03 Temperature, if water or alcohol is selected
M6 04 Density if another Liquid is selected.
Start the procedure:
Set the cursor next to
M6 04 Run
Enter the Density mode
OR
At any time press Print/enter to enter the Density mode
Make sure the Density Kit is assembled correctly and there are no air bubbles on any of the
parts in the liquid. Tare the balance if necessary to zero the display.
The display will guide you through the steps of weighing the sample in air and then weighing
it in the liquid.
1. Put the sample on the small test pan above the liquid.
2. After the result is stable (the unit of mass is on) press .
© Adam Equipment Company 2000
9
3. Put the sample on the lower pan in the liquid. Make sure there are no bubbles on the
sample of or any other part in the liquid.
4. After the result is stable (the unit of mass is on) press .
You will see results of the density measurement and other messages.
W1 – sample mass in the air, W2 – sample mass in the liquid,
D– Density of liquid .
© Adam Equipment Company 2000
10
4.3 Density Measurement of Liquids
The main part necessary for determination of the density of a liquid is the glass float supplied
in the Density Determination kit. Item (1) in the drawing of the Density Determination Kit at
the beginning of this section. This float has a hanger attached with the precise volume of the
flat stamped upon it.
Before proceeding with the density test enter the volume of the float into memory.
Enter mode menu
Set the cursor next to
M6 Density
Enter the submenu for
M6 Density
Enter parameter
01 Procedure The Name will flash
or
Change procedure name
to Liquid Density
Save choice
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