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1.1Description.............................................................................................................................................EN-3
1.2Features.................................................................................................................................................EN-3
1.3Definition of Signal Warnings and Symbols...........................................................................................EN-3
1.4Safety Precautions.................................................................................................................................EN-3
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2.1Unpacking..............................................................................................................................................EN-4
2.2Select the Location ................................................................................................................................EN-4
2.3Leveling..................................................................................................................................................EN-4
2.4Connecting Power and Acclimating the Balance...................................................................................EN-5
2.5Connecting the Interface........................................................................................................................EN-5
2.6Initial Calibration ....................................................................................................................................EN-5
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3.1Overview of Display, Home Screen.......................................................................................................EN-6
3.2Principal Functions and Main Menu.......................................................................................................EN-7
3.3Overview of Parts and Features –Draft Shield Models.........................................................................EN-7
3.4Overview of Parts and Features –Non-Draft Shield Models.................................................................EN-7
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4.1Weighing................................................................................................................................................EN-8
4.2Parts Counting.......................................................................................................................................EN-8
4.3Percent Weighing.................................................................................................................................EN-10
4.4Dynamic Weighing...............................................................................................................................EN-11
4.5Density Determination..........................................................................................................................EN-12
4.5.1Measuring the Density of a Sinking Solid Using Water ...................................................................EN-17
4.5.2Measuring the Density of a floating Solid Using Water....................................................................EN-18
4.5.3Measuring the Density of a Solid Using an Auxiliary Liquid other than Water ................................EN-18
4.5.4Measuring the Density of a Liquid Using a Calibrated Sinker .........................................................EN-19
4.5.5Measuring the Density of Porous Material Using Oil.......................................................................EN-21
4.6Additional Features..............................................................................................................................EN-23
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5.1Menu Navigation..................................................................................................................................EN-24
5.1.1Changing Settings............................................................................................................................EN-24
5.2Calibration............................................................................................................................................EN-24
5.2.1Calibration Sub-menu (InCal models)..............................................................................................EN-24
5.2.2Internal Calibration (not applicable to ExCal models)......................................................................EN-25
5.2.3InCal Adjust (not applicable to ExCal models).................................................................................EN-25
5.2.4Span Calibration...............................................................................................................................EN-25
5.2.5Linearity Calibration.........................................................................................................................EN-26
5.3Balance Setup......................................................................................................................................EN-28
5.3.1Language.........................................................................................................................................EN-28
5.3.2Filter Level........................................................................................................................................EN-28
5.3.3AZT (Auto Zero Tracking)................................................................................................................EN-28
5.3.4Auto Tare .........................................................................................................................................EN-28
5.3.5Graduations......................................................................................................................................EN-29
5.3.6Date Format.....................................................................................................................................EN-29
5.3.7Date Setup.......................................................................................................................................EN-29
5.3.8Time Format.....................................................................................................................................EN-29
5.3.9Time Setup.......................................................................................................................................EN-29
5.3.10Brightness........................................................................................................................................EN-29
5.3.11Auto Dim ..........................................................................................................................................EN-29
5.3.12Capacity Bar.....................................................................................................................................EN-29
5.3.13Approved Mode................................................................................................................................EN-30
5.4Weighing Units.....................................................................................................................................EN-30
5.5RS232 Interface Setup.........................................................................................................................EN-32
5.5.1Baud Rate........................................................................................................................................EN-32
5.5.2Transmission....................................................................................................................................EN-32
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5.5.3Handshake.......................................................................................................................................EN-33
5.6Print Settings........................................................................................................................................EN-33
5.6.1Stable Only.......................................................................................................................................EN-33
5.6.2Numeric Only ...................................................................................................................................EN-33
5.6.3Single Header ..................................................................................................................................EN-33
5.6.4Print To.............................................................................................................................................EN-33
5.6.5Auto Print .........................................................................................................................................EN-33
5.6.6Header .............................................................................................................................................EN-33
5.6.7Date and Time..................................................................................................................................EN-33
5.6.8Balance ID........................................................................................................................................EN-34
5.6.9Balance Name..................................................................................................................................EN-34
5.6.10User Name.......................................................................................................................................EN-34
5.6.11Project Name ...................................................................................................................................EN-34
5.6.12Application Name.............................................................................................................................EN-34
5.6.13Result...............................................................................................................................................EN-34
5.6.14Gross................................................................................................................................................EN-34
5.6.15Net....................................................................................................................................................EN-34
5.6.16Tare..................................................................................................................................................EN-34
5.6.17Line Feed.........................................................................................................................................EN-34
5.7GLP......................................................................................................................................................EN-35
5.7.1Header .............................................................................................................................................EN-35
5.7.2Balance Name..................................................................................................................................EN-35
5.7.3User Name.......................................................................................................................................EN-35
5.7.4Project Name ...................................................................................................................................EN-35
5.8Factory Reset.......................................................................................................................................EN-35
5.9Lockout.................................................................................................................................................EN-35
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6.1Settings................................................................................................................................................EN-36
6.2Verification ...........................................................................................................................................EN-36
6.3Securing the Menu...............................................................................................................................EN-36
6.4Sealing Access to the Balance Settings..............................................................................................EN-36
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7.1Connecting, Configuring and Testing the Printer / Computer Interface...............................................EN-37
7.2Output Format......................................................................................................................................EN-38
7.3Printout Examples................................................................................................................................EN-38
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8.1Calibration............................................................................................................................................EN-40
8.2Cleaning...............................................................................................................................................EN-40
8.3Troubleshooting...................................................................................................................................EN-40
8.4Service Information..............................................................................................................................EN-40
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9.1Specifications.......................................................................................................................................EN-41
9.2Drawings and Dimensions...................................................................................................................EN-47
9.3Accessories..........................................................................................................................................EN-47
9.4Communication....................................................................................................................................EN-48
9.4.1Interface Commands........................................................................................................................EN-48
9.4.2RS232 (DB9) Pin Connections ........................................................................................................EN-49
9.4.3USB Interface...................................................................................................................................EN-49
9.4.4USB Connection...............................................................................................................................EN-50
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The PX balance is a precision weighing instrument that will provide you with years of service if properly cared for.
PX balances are available in capacities from 82 grams to 8200 grams.
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2SHUDWLRQ &RQWUROV 2-line backlit display, with 6
weighing applications and
many other features.
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Safety notes are marked with signal words and warning symbols. These show safety issues and warnings. Ignoring
the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results.
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For a hazardous situation with medium risk, possibly resulting in injuries or
death if not avoided.
&$87,21
For a hazardous situation with low risk, resulting in damage to the device or
the property or in loss of data, or injuries if not avoided.
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For important information about the product
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For useful information about the product
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General Hazard Electrical Shock Hazard
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&$87,21Read all safety warnings before installing, making connections, or servicing this equipment.
Failure to comply with these warnings could result in personal
injury and/or property damage.
Retain all
instructions for future reference.
zVerify that the AC adapter’s input voltage range and plug type are compatible with the local AC main power
supply.
zMake sure that the power cord does not pose a potential obstacle or tripping hazard.
zDo not position the balance such that it is difficult to reach the power connection.
zThe balance is for indoor use only. Do not operate the equipment in hazardous or unstable environments.
zOperate the equipment only under ambient conditions specified in these instructions.
zDo not drop loads on the pan.
zUse the balance only in dry locations.
zDisconnect the equipment from the power supply when cleaning.
zUse only approved accessories and peripherals.
zService should only be performed by authorized personnel.
Direct Current
Alternating Current
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Carefully remove your PX balance and each of its components from the package. The included components vary
depending on the balance model (see the list below). Save the packaging to ensure safe storage and transport.
Please read the manual completely before installing and using the PX balance to avoid incorrect operation.
Components included:
xBalance
xPower adapter + Attaching plug
xStainless steel pan
xPan support (for 0.1 g / 0.01 g model only)
xWarrenty card
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Avoid heat sources, rapid temperature changes, air current or excessive vibrations. Allow sufficient space.
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Be sure the balance is level before it is used or after its location is changed.
The PX balance has a level bubble in a small round window beside the display.
To level the balance, adjust the 4 Leveling Feet until the bubble is centered in the circle.
Please refer to Figure 2-1 for leveling.
Figure 2-1. Leveling
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Connect the DC output connector to the power receptacle on the rear of the balance. Then connect the AC adapter
plug to a suitable electrical outlet.
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It is suggested that the balance should not be used until it has been connected to power and acclimatised to the
environment for a certain period of time. In the case of a balance with the precision above 0.1 mg, the
acclimatisation time should be 1.5 hours; in the case of balance with the precision of 0.01 mg, the acclimatisation
time should be more than 4 hours.
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The PX balance has two data interfaces, RS232 and USB.
Use the RS
-232 port to connect either to a computer or a printer with a standard (straight-
through) serial cable.
Use the USB port to connect to a comp
uter with a USB 2.0 Type A to Type B cable.
Interface connections on the rear of the balance
USB
φUsed to connect to PC only
RS232
φUsed to connect to PC or Printer
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For Connecting, Configuring and Testing the Printer / Computer Interface, see the Printing section.
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When the PX balance is first installed, or when it is moved to another location, it must be calibrated to ensure
accurate weighing results. PX balances are classified into two categories, InCal models and ExCal models. InCal
models have a built-in calibration mechanism which can calibrate the balance automatically and does not require
the use of external calibration masses. If preferred, InCal models can also be manually calibrated with external
masses. ExCal models are calibrated with external masses. Make sure to have the appropriate calibration masses
available before beginning calibration.
USB
RS232
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The PX balance has a 2-line backlit display.
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x
If the Indicator is
Off, turns on the
Indicator.
x
If Indicator is On,
sets zero.
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x
Sends the current
displayed value to
the serial interface.
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xOperation is
dependent on the
application mode.
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xPerforms
tare
operation.
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xZeroing current
value.
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Changes weighing
units.
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xChanges
application mode.
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x
Enters the main
menu.
Calibration is
the first sub-
menu.
x
Views the preset
Tare value.
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x
Accepts the current
(blinking) setting on
the display.
1R
x
Rejects the current
(blinking) setting
on the display.
x
Increments a value
being entered.
%DFN
x
Reverts back to
previous menu
item.
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value being
entered.
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xImmediately
exits the sub
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menu.
xAborts a
calibration in
progress.
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Weighing:
Press =HUR
to set the display to zero. Place an object
on the pan. The display indicates the gross
weight.
Taring:
With no load on the pan, press =HUR to set the display to zero. Place an empty container on the
pan and press
7DUH. Add material to the container and its net weight is displayed.
After the
container and
the objects are removed, the load will be displayed
as a negative number. Press
7DUH to clear.
Zero:
Press =HUR to zero the balance.
Dot
-matrix
Display:
The relevant data in the specific application mode are shown in the dot
-matrix display area.
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Result Field:
Information varies
by application
Unit
Instructional Messages
Net (NET)
Stability (*)
Negative (-)
Centre of Zero (>0<)
Pre-tare (PT)
Pan
Level Indicator
Adjustable
Foot
Adjustable
Foot
USB
Device
Security Switch
RS232
Power Input
Pan
Adjustable Foot
Adjustable Foot
USB
Device
Security Switch
RS232
Power Input
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The PX balance can be operated in 6 application modes by long pressing the )XQFWLRQ0RGH button.
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1RWHBefore using any application, be sure the balance has been leveled and calibrated.
Use this application to determine the weight of objects in the selected unit of measure.
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1. Press 7DUH or =HUR if necessary to begin.
2. Press and hold the )XQFWLRQ0RGH button
to select
Weighing (this application is the default).
3.
Place objects on the pan to display the weight. Once
the reading is stable, the * will appear.
4.
The resulting value is displayed in the active unit of
measure.
Item Settings
To view or adjust the current settings.
•&DSDFLW\%DUWhen set to On, the capacity bar is displayed in the reference field. The capacity will not
display when the balance is set to zero.
•:HLJKLQJ8QLWV Change the displayed unit. See Section 5.4 for more information.
•)LOWHU/HYHO Change Filtering level. See Section 5.3.2 for more information.
•*/3'DWD See Section 5.7 for more information.
•3ULQW6HWWLQJV Change printing settings. See Section 7 for more information.
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1RWH Before using any application, be sure the balance has been leveled and calibrated. The minimum piece
weight should be no less than 0.1d.
Use this application to count samples of uniform weight.
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1. Press 7DUH or =HUR if necessary to begin.
2. Press and hold the )XQFWLRQ 0RGH
button until
Parts Counting appears.
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3. After confirmation by pressing <HV, the message
"Clear APW?" will appear on the screen.
4.
If the APW of the last Parts Counting operation needs
to be kept, press 1R
when the message "Clear
APW?" displays.
5. Press <HV, and the message "Sample size 10" will
display with the numeral "10" (default) flashing.
6. Confirm the sample size by pressing <HV
and place
10 samples on the pan to display the weight.
Press
1R or %DFN
to increase or decrease the value as
desired.
7. Press the )XQFWLRQ0RGH
button so that the weight
of the
10 samples is used to establish the average
piece weight (APW). The
display will show 10 pieces.
8.
To view the piece weight or the total weight, press the
)XQFWLRQ0RGH button.
9. Place additional objects on the pan, and the
corresponding number of pieces will display.
Item Settings
6DPSOH The sample size ranges from 1 to 1000. The default
value is 10.
1RWH
To ensure accurate counting
, the minimum piece
weight should be no less than 0.1d.
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Improving counting accuracy by re
-
calculating the piece weight
automatically as parts are added.
APW Optimization occurs only when the number of pieces
added to the pan is between one and three times the number
already on the pan.
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Changing printing setup. See Section 7 for more information.
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1RWHBefore using any application, be sure the balance has been leveled and calibrated.
Use Percent Weighing to display the weight of a test object as a percentage of a pre-established reference
sample.
The default (or last) reference weight is displayed.
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1. Press and hold the )XQFWLRQ 0RGH button until
Percent Weighing appears.
2. After confirmation by pressing <HV, the message
"Clear reference?" will appear on the screen.
3. Press <HV
, and then the message "Place sample" will
display.
4. Place the reference sample on the pan to display the
weight. When the reading is stable, the * will appear.
5. Press the )XQFWLRQ0RGH
button so that the weight
of the reference
sample is stored in memory. The
display will show 100%.
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6. Remove the reference sample and place the test
object on the pan. The ratio of the test object to
the
reference sample
weight is displayed as a
percentage.
7. To view the reference sample weight or the
test
object weight, press the )XQFWLRQ0RGH button.
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1RWH Before using any application, be sure the balance has been leveled and calibrated. Clear the pan before
beginning a new Dynamic Weighing cycle.
Use this application to weigh an unstable load, such as a moving animal.
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1. Press and hold the )XQFWLRQ 0RGH button until
Dynamic Weighing appears.
2. After confirmation by pressing <HV
, the message
"Change parameter?" will appear on the screen.
3. Press <HV, and then the message "Average time 10
s" will display with the numeral "10" flashing. P
ress
1R or %DFN
to increase or decrease the value as
desired.
1RWH
If the
previously established reference sample weight
needs to
be kept, press
1R
when the message "Clear reference?"
displays.
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Changing printing setup. See Section 7 for more information.
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4. Confirm the weighing time by pressing <HV, and the
message "R
eady" will display at the lower left of the
screen.
5. Place the dynamic object on the pan. The balance
begins a countdown (averaging process). During the
countdown, the screen shows the time remaining.
6. When the countdown ends, the result line is displayed
and held.
7.
After the dynamic object is removed, the weight will
be automatically set to zero, and the balance
will
return to the status of "Ready".
Item Settings
$YHUDJLQJ7LPH Set the averaging time to a value between 1 and 15 seconds. Default is 10 seconds.
3ULQWLQJ6HWXS Changing printing setup. See Section 7 for more information.
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1RWH Before using any application, be sure the balance has been leveled and calibrated.
Use this application to determine an object’s density.
A'HQVLW\ 'HWHUPLQDWLRQ .LW 3DUW 1XPEHU is designed to be used with PX series balances.
Illustrations in this procedure refer to the density kit, however, you may use whatever lab apparatus that will suit
the requirements for density measurements. A built in reference density table for water at temperatures between
10ºC and 30.9ºC is included in the balance software. Review this entire section before attempting density
measurements.
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1. Glass beaker
2. Bracket
3. Forceps
4. Platforms
5. Holder for floating solids
6. Holder for non floating solids
7. Precision thermometer with holder
8. Sinker 10ml (optional equipment)
When making density measurements, the material should weigh at least 10.0 mg on an analytical balance and 100
mg on a precision balance.
Balance Preparation with Ohaus Density Kit (Optional)
Allow the balance to warm up sufficiently before making measurements.
Open either the left or right side door of the balance and remove the Pan as shown. Insert the Bracket into the
balance where the Pan was removed.
The Equalizing Washer is not used.
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Place the Support into position over the bracket making sure the Support does not make contact with the Bracket
as shown in illustration.
Install beaker on support as shown.
NOTE: Beaker and thermometer are not supplied as part of the density kit.
xThe density Q is the quotient of the mass m and the volume V.
Density determinations are performed by using Archimedes’ principle. This principle states that every solid body
immersed in a fluid loses weight by an amount equal to that of the fluid it displaces. The density table for water is
included in the Discovery balance software.
The density of a solid is determined with the aid of a liquid whose density, Qo, is known (water is used as an
auxiliary liquid). The solid is weighed in air (A) and then in the auxiliary liquid (B). The density Q can be calculated
from the two weighings as follows:
The balance allows direct determination of the buoyancy P (P =A - B) and consequently the above formula can be
simplified:
Q = Density of the solid
A = Weight of the solid in air
B = Weight of the solid in the auxiliary liquid
Q0 = Density of the auxiliary liquid at a given temperature (this value depends on the temperature). The density
table for water is included in Discovery balances.
P = Buoyancy of the solid in the auxiliary liquid (corresponds to A-B).
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Place the solid in the Weighing Pan on the Weigh Below Hook in the liquid as shown. Ensure that there are no air
bubbles on the solid to be weighed.
Close the draft shield doors and weigh the solid (buoyancy P). The display indicates the density in grams/cc.
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For density determination of solids with a density less than 1 g/CM3, the bottom of the Weigh Below Hook for solids
must be used as it holds the solid body below the surface of the auxiliary liquid. If the buoyancy of the solid is
greater than the weight of the Weigh Below Hook, the Weigh Below Hook must be weighted by placing an
additional mass on the submerged part of the Weigh Below Hook as shown.
Weigh the sample in air first as explained in the previous procedure.
After loading the additional mass, tare the balance and start the weighing again. Wait until the balance has
reached stability and note the displayed weight P (buoyancy of the solid).
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The following tips should help you improve the accuracy of the results in the density determination of solids.
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Solids are generally so insensitive to temperature fluctuations that the corresponding density changes are of no
consequence. However, as work is performed with an auxiliary liquid in the density determination of solids, their
temperature must be taken into account as the temperature has a greater effect with liquids and causes density
changes in the order of magnitude 0.5 to 1% per °C. This effect is already apparent in the third decimal place of the
result.
To obtain accurate results, we recommend that you always take the temperature of the auxiliary liquid into account
on all density determinations.
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1 CM3 of air weighs approximately 1.2 mg (depending on the physical condition). As a consequence, in the
weighing in air, each solid experiences buoyancy of this magnitude (the so-called “air buoyancy”) per cm3of its
volume.
However, the air buoyancy must be taken into account only when a result is required with an accuracy of 3 to 4
decimal places. To correct for this, the air buoyancy (0.0012 g per cm3volume of the body) is added to the
calculated result:
Calculated density JFPDLUEXR\DQF\ = effective density
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Adhesion of the liquid to the Weigh Below Hook causes an apparent weight increase of up 3 mg.
As the Weigh Below Hook is immersed in the auxiliary liquid in both weighings of the solid (in air and in the
auxiliary liquid), the influence of the apparent weight increase can be neglected because the balance is tared
before every measurement.
To reduce the effect of air bubbles and to ensure the greatest possible accuracy, use a few drops of a
wetting agent (not supplied) and add them to the auxiliary liquid.
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The density of a liquid can be made using a sinker of known volume. The sinker (P/N: 83034024) is weighed in air
and then in the liquid whose density is to be determined, The density, Q, can be determined from the two
weighings as follows:
Q = Density of the liquid
A = Weight of the sinker in air
B = Weight of the sinker in liquid
V = Volume of the sinker
P = Buoyancy of the sinker in the liquid (P = A-B)
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In DENSITY SETUP, set Mode to Liquid Density and enter sinker volume in cc’s.
After weighing the sinker in air and then weighing the sinker immersed in liquid, the balance calculates the density
of the liquid and is displayed in grams/cc. See illustrations below for placement of the sinker. When the sinker is
immersed in the liquid, it must not come into contact with the bottom of the beaker.
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The density of a porous (oil impregnated part) can be made with the balance. Weigh the part (dry) prior to oil
impregnation and record its weight. You must also know the density value of the oil to be used in immersing the
part before starting. In this procedure, you will follow the method for solid density measurements using water.
Enter the dry weight of the porous material and the density of oil used to impregnate the part.
7R'HWHUPLQH:HW'HQVLW\
Wet density of the sample can be calculated by following the normal Solid Density procedure using the oil
impregnated part.
Before density measurements can be made, the density mode of operation must be set up in the Menu, Mode Sub-
menu. It is in the Mode Sub-menu where solid, porous, water or auxiliary liquids are selected.
After the basic parameters have been set, the balance density operation is further determined in the APPL
DENSITY menu. This menu allows the setting of Density, Temperature, Dry Weight of Porous Material, Sinker
Volume and Density of Oil.
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Press and hold the )XQFWLRQ0RGH button until the Density appears on the screen.
After confirmation by pressing <HV, the message "Change parameter?" will display on the screen. The settings
can be kept or changed as desired.
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xSample Type: Solid, Liquid
xAuxiliary Liquid: Water, Alcohol, Other
xPorous Material: Off, On
xWater Temperature: 20Ԩ(by default)
xAlcohol Temperature: 20Ԩ(by default)
xVolume (of Calibrated Sinker): 10 ml (by default)
xWeight (of Porous Material): 5.000 g
xOil Density: 0.80000 g / cm3
Four types of density determination can be made:
1. Solid more density than the auxiliary liquid
2. Solid less density than the auxiliary liquid
3. Liquid density
4. Porous material (impregnated with oil)
The following are the operating procedures for determining density of solid, liquid and porous material with water
as the auxiliary liquid. Other auxiliary liquids are also applicable for density determination.
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0HDVXULQJWKH'HQVLW\RID6LQNLQJ6ROLG8VLQJ:DWHU
Press and hold the )XQFWLRQ 0RGH button until Density
appears.
Press <HV to initiate the Density Determination.
,WHP6HWWLQJV
xSample type: Solid
xAuxiliary Liquid: Water
xPorous Material: Off
xWater Temperature: Measure the actual water
temperature using a precision thermometer.
The water temperature is 20.0
đby default.
P
ress 1R or %DFN to increase or decrease the value
of
temperature
.
The balance calculates water density based on
the water temperature value entered.
1. Weigh the sample in air using the balance and the density
determination kit.
When the * (symbol of stability) appears, press the
)XQFWLRQ 0RGH button to confirm
the weight of the
sample in the air.
2. Weigh the sample submerged in the liquid using the
balance and the density determination kit.
1RWH Lower
the sample down into the liquid until it is fully
submerged.
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(1 3;6HULHV%DODQFH
3.
Press the
)XQFWLRQ0RGHbutton to get the density of the
sample. After completion of the test, press the
)XQFWLRQ
0RGHbutton to test a new sample.
0HDVXULQJWKH'HQVLW\RIDIORDWLQJ6ROLG8VLQJ:DWHU
1. Press and hold the )XQFWLRQ0RGH button until Density
appears. Press <HV to enter the Density Determination
.
2. In determining density with the balance, the balance
setup and density determination procedures are basically
the same for a floating solid and a non-
floating solid
except for the necessary holder (as shown in
the figure)
to be used for density determination.
3.
After completion of the test, press the
)XQFWLRQ0RGH
button to test a new sample.
1RWH Lower the sample down into the liquid until it is fully
submerged.
Holder for non-floating
solids
Holder for floating
solids
0HDVXULQJWKH'HQVLW\RID6ROLG8VLQJDQ$X[LOLDU\/LTXLGRWKHUWKDQ:DWHU
1. Press and hold the )XQFWLRQ0RGH button until Density
appears. Press <HV to enter the Density Determination
.
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3;6HULHV%DODQFH (1
,WHP6HWWLQJV
xSample type: Solid
xAuxiliary Liquid: Other
xPorous Material: Off
6HWWKHGHQVLW\RIWKHDX[LOLDU\OLTXLG
2.
The default value of the auxiliary liquid is 1.00000 g/cm3
3.
Press 1R or %DFN to increase or decrease the value in
accordance with the actual density of the
auxiliary liquid.
4.
See Section 4.5.1 and Section 4.5.2 for the specific
procedures for density determination.
5.
Press the)XQFWLRQ0RGHbutton to display
the density of
the sample.
6.
After completion of the test, press the )XQFWLRQ0RGH
button to test a new sample.
0HDVXULQJWKH'HQVLW\RID/LTXLG8VLQJD&DOLEUDWHG6LQNHU
Press and hold the )XQFWLRQ 0RGH button until Density
appears. Press
<HV to enter the Density Determination.
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