OHAUS Pioneer PX85 User manual

Pioneer
PX Series Balances
Instruction Manual

PX Series Balance EN-1
Table of Contents
1. INTRODUCTION .............................................................................................................. EN-3
1.1 Description ............................................................................................................................................. EN-3
1.2 Features ................................................................................................................................................. EN-3
1.3 Definition of Signal Warnings and Symbols ........................................................................................... EN-3
1.4 Safety Precautions ................................................................................................................................. EN-3
2. INSTALLATION ............................................................................................................... EN-4
2.1 Unpacking .............................................................................................................................................. EN-4
2.2 Select the Location ................................................................................................................................ EN-4
2.3 Leveling .................................................................................................................................................. EN-4
2.4 Connecting Power and Acclimating the Balance ................................................................................... EN-5
2.5 Connecting the Interface ........................................................................................................................ EN-5
2.6 Initial Calibration .................................................................................................................................... EN-5
3. OPERATION .................................................................................................................... EN-6
3.1 Overview of Display, Home Screen ....................................................................................................... EN-6
3.2 Principal Functions and Main Menu ....................................................................................................... EN-7
3.3 Overview of Parts and Features – Draft Shield Models ......................................................................... EN-7
3.4 Overview of Parts and Features – Non-Draft Shield Models ................................................................. EN-7
4. APPLICATIONS ............................................................................................................... EN-8
4.1 Weighing ................................................................................................................................................ EN-8
4.2 Parts Counting ....................................................................................................................................... EN-8
4.3 Percent Weighing ................................................................................................................................. EN-10
4.4 Dynamic Weighing ............................................................................................................................... EN-11
4.5 Density Determination .......................................................................................................................... EN-12
4.5.1 Measuring the Density of a Sinking Solid Using Water ................................................................... EN-17
4.5.2 Measuring the Density of a floating Solid Using Water.................................................................... EN-18
4.5.3 Measuring the Density of a Solid Using an Auxiliary Liquid other than Water ................................ EN-18
4.5.4 Measuring the Density of a Liquid Using a Calibrated Sinker ......................................................... EN-19
4.5.5 Measuring the Density of Porous Material Using Oil ....................................................................... EN-21
4.6 Additional Features .............................................................................................................................. EN-23
5. MENU SETTINGS .......................................................................................................... EN-24
5.1 Menu Navigation .................................................................................................................................. EN-24
5.1.1 Changing Settings ............................................................................................................................ EN-24
5.2 Calibration ............................................................................................................................................ EN-24
5.2.1 Calibration Sub-menu (InCal models) .............................................................................................. EN-24
5.2.2 Internal Calibration (not applicable to ExCal models) ...................................................................... EN-25
5.2.3 InCal Adjust (not applicable to ExCal models) ................................................................................. EN-25
5.2.4 Span Calibration............................................................................................................................... EN-25
5.2.5 Linearity Calibration ......................................................................................................................... EN-26
5.3 Balance Setup ...................................................................................................................................... EN-28
5.3.1 Language ......................................................................................................................................... EN-28
5.3.2 Filter Level ........................................................................................................................................ EN-28
5.3.3 AZT (Auto Zero Tracking) ................................................................................................................ EN-28
5.3.4 Auto Tare ......................................................................................................................................... EN-28
5.3.5 Graduations ...................................................................................................................................... EN-29
5.3.6 Date Format ..................................................................................................................................... EN-29
5.3.7 Date Setup ....................................................................................................................................... EN-29
5.3.8 Time Format ..................................................................................................................................... EN-29
5.3.9 Time Setup ....................................................................................................................................... EN-29
5.3.10 Brightness ........................................................................................................................................ EN-29
5.3.11 Auto Dim .......................................................................................................................................... EN-29
5.3.12 Capacity Bar ..................................................................................................................................... EN-29
5.3.13 Approved Mode ................................................................................................................................ EN-30
5.4 Weighing Units ..................................................................................................................................... EN-30
5.5 RS232 Interface Setup ......................................................................................................................... EN-32
5.5.1 Baud Rate ........................................................................................................................................ EN-32
5.5.2 Transmission .................................................................................................................................... EN-32

EN-2 PX Series Balance
5.5.3 Handshake ....................................................................................................................................... EN-33
5.6 Print Settings ........................................................................................................................................ EN-33
5.6.1 Stable Only ....................................................................................................................................... EN-33
5.6.2 Numeric Only ................................................................................................................................... EN-33
5.6.3 Single Header .................................................................................................................................. EN-33
5.6.4 Print To ............................................................................................................................................. EN-33
5.6.5 Auto Print ......................................................................................................................................... EN-33
5.6.6 Header ............................................................................................................................................. EN-33
5.6.7 Date and Time.................................................................................................................................. EN-33
5.6.8Balance ID ........................................................................................................................................ EN-34
5.6.9 Balance Name.................................................................................................................................. EN-34
5.6.10 User Name ....................................................................................................................................... EN-34
5.6.11 Project Name ................................................................................................................................... EN-34
5.6.12 Application Name ............................................................................................................................. EN-34
5.6.13 Result ............................................................................................................................................... EN-34
5.6.14 Gross. ............................................................................................................................................... EN-34
5.6.15 Net..... ............................................................................................................................................... EN-34
5.6.16 Tare... ............................................................................................................................................... EN-34
5.6.17 Line Feed ......................................................................................................................................... EN-34
5.7 GLP ...................................................................................................................................................... EN-35
5.7.1 Header ............................................................................................................................................. EN-35
5.7.2 Balance Name.................................................................................................................................. EN-35
5.7.3 User Name ....................................................................................................................................... EN-35
5.7.4 Project Name ................................................................................................................................... EN-35
5.8 Factory Reset ....................................................................................................................................... EN-35
5.9 Lockout................................................................................................................................................. EN-35
6. LEGAL FOR TRADE (LFT) ........................................................................................... EN-36
6.1 Settings ................................................................................................................................................ EN-36
6.2 Verification ........................................................................................................................................... EN-36
6.3 Securing the Menu ............................................................................................................................... EN-36
6.4 Sealing Access to the Balance Settings .............................................................................................. EN-36
7. Printing .......................................................................................................................... EN-37
7.1 Connecting, Configuring and Testing the Printer / Computer Interface ............................................... EN-37
7.2 Output Format ...................................................................................................................................... EN-38
7.3 Printout Examples ................................................................................................................................ EN-38
8. MAINTENANCE ............................................................................................................. EN-40
8.1 Calibration ............................................................................................................................................ EN-40
8.2 Cleaning ............................................................................................................................................... EN-40
8.3 Troubleshooting ................................................................................................................................... EN-40
8.4 Service Information .............................................................................................................................. EN-40
9. TECHNICAL DATA ........................................................................................................ EN-41
9.1 Specifications ....................................................................................................................................... EN-41
9.2 Drawings and Dimensions ................................................................................................................... EN-46
9.3 Accessories .......................................................................................................................................... EN-46
9.4 Communication .................................................................................................................................... EN-47
9.4.1 Interface Commands ........................................................................................................................ EN-47
9.4.2 RS232 (DB9) Pin Connections ........................................................................................................ EN-48
9.4.3 USB Interface ................................................................................................................................... EN-48
9.4.4 USB Connection............................................................................................................................... EN-49
10.SOFTWARE UPDATES ................................................................................................. EN-49
11.COMPLIANCE ............................................................................................................... EN-50

PX Series Balance EN-3
1. INTRODUCTION
1.1 Description
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.
1.2 Features
Operation Controls: 2-line backlit display, with 6
weighing applications and many other features.
1.3 Definition of Signal Warnings and Symbols
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.
WARNING
For a hazardous situation with medium risk, possibly resulting in injuries or
death if not avoided.
CAUTION
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.
Attention
For important information about the product
Note
For useful information about the product
Warning Symbols
General Hazard Electrical Shock Hazard
1.4 Safety Precautions
CAUTION: Read 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.
 Verify that the AC adapter’s input voltage range and plug type are compatible with the local AC main power
supply.
 Make sure that the power cord does not pose a potential obstacle or tripping hazard.
 Do not position the balance such that it is difficult to reach the power connection.
 The balance is for indoor use only. Do not operate the equipment in hazardous or unstable environments.
 Operate the equipment only under ambient conditions specified in these instructions.
 Do not drop loads on the pan.
 Use the balance only in dry locations.
 Disconnect the equipment from the power supply when cleaning.
 Use only approved accessories and peripherals.
 Service should only be performed by authorized personnel.
Direct Current
Alternating Current

EN-4 PX Series Balance
2. INSTALLATION
2.1 Unpacking
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:
 Balance
 Power adapter + Attaching plug
 Stainless steel pan
 Pan support (for 0.1 g / 0.01 g model only)
 Warrenty card
2.2 Select the Location
Avoid heat sources, rapid temperature changes, air current or excessive vibrations. Allow sufficient space.
2.3 Leveling
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

PX Series Balance EN-5
2.4 Connecting Power and Acclimating the Balance
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.
Acclimating
It is suggested that the balance should not be used until it has been connected to power and acclimated to the
environment for a certain period of time. In the case of balance with the precision above 0.1 mg, the acclimation
time should be 1.5 hours; in the case of balance with the precision of 0.01 mg, the acclimation time should be more
than 4 hours.
2.5 Connecting the Interface
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 computer with a USB 2.0 Type A to Type B cable.
Interface connections on the rear of the balance
USB：Used to connect to PC only
RS232：Used to connect to PC or Printer
Note: For Connecting, Configuring and Testing the Printer / Computer Interface, see the Printing section.
2.6 Initial Calibration
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

EN-6 PX Series Balance
3. OPERATION
3.1 Overview of Display, Home Screen
The PX balance has a 2-line backlit display.
CONTROLS
CONTROL FUNCTIONS
Button
Primary
Function
(Short
Press)
On / Zero
 If the Indicator is
Off, turns on the
Indicator.
 If Indicator is On,
sets zero.
Print
 Sends the current
displayed value to
the serial interface.
Function
 Operation is
dependent on the
application mode.
Tare
 Performs tare
operation.
Secondary
Function
(Press and
Hold)
Off
 Zeroing current
value.
Unit
 Changes weighing
units.
Mode
 Changes
application mode.
Menu-Cal
 Enters the main
menu.
Calibration is
the first sub-
menu.
 Views the preset
Tare value.
Menu
Function
(Short
Press)
Yes
 Accepts the current
(blinking) setting on
the display.
No
 Rejects the current
(blinking) setting
on the display.
 Increments a value
being entered.
Back
 Reverts back to
previous menu
item.
 Decrements a
value being
entered.
Exit
 Immediately
exits the sub-
menu.
 Aborts a
calibration in
progress.

PX Series Balance EN-7
MAIN APPLICATION SCREEN
3.2 Principal Functions and Main Menu
Weighing:
Press Zero 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 Zero to set the display to zero. Place an empty container on the
pan and press Tare. 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
Tare to clear.
Zero:
Press Zero to zero the balance.
Dot-matrix
Display:
The relevant data in the specific application mode are shown in the dot-matrix display area.
3.3 Overview of Parts and Features – Draft Shield Models
3.4 Overview of Parts and Features – Non-Draft Shield Models
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

EN-8 PX Series Balance
4. APPLICATIONS
The PX balance can be operated in 6 application modes by long pressing the Function / Mode button.
4.1 Weighing
Note: Before 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.
Weighing
1. Press Tare or Zero if necessary to begin.
2. Press and hold the Function / Mode 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.
• Capacity Bar: When set to On, the capacity bar is displayed in the reference field. The capacity will not
display when the balance is set to zero.
• Weighing Units: Change the displayed unit. See Section 5.4 for more information.
• Filter Level: Change Filtering level. See Section 5.3.2 for more information.
• GLP Data: See Section 5.7 for more information.
• Print Settings: Change printing settings. See Section 7 for more information.
4.2 Parts Counting
Note: 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.
Parts Counting
1. Press Tare or Zero if necessary to begin.
2. Press and hold the Function / Mode button until
Parts Counting appears.

PX Series Balance EN-9
3. After confirmation by pressing Yes, the message
"Clear APW?" will appear on the screen.
4. If the APW of the last Parts Counting operation needs
to be kept, press No when the message "Clear
APW?" displays.
5. Press Yes, and the message "Sample size 10" will
display with the numeral "10" (default) flashing.
6. Confirm the sample size by pressing Yes, and place
10 samples on the pan to display the weight. Press
No or Back to increase or decrease the value as
desired.
7. Press the Function / Mode 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
Function / Mode button.
9. Place additional objects on the pan, and the
corresponding number of pieces will display.
Item Settings
Sample: The sample size ranges from 1 to 1000. The default
value is 10.
Note: To ensure accurate counting, the minimum piece
weight should be no less than 0.1d.

EN-10 PX Series Balance
APW Optimization:
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.
Print Settings:
Changing printing setup. See Section 7 for more information.
4.3 Percent Weighing
Note: Before 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.
Percent Weighing
1. Press and hold the Function / Mode button until
Percent Weighing appears.
2. After confirmation by pressing Yes, the message
"Clear reference?" will appear on the screen.
3. Press Yes, 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 Function / Mode button so that the weight
of the reference sample is stored in memory. The
display will show 100%.

PX Series Balance EN-11
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 Function / Mode button.
Item Settings
4.4 Dynamic Weighing
Note: 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.
Dynamic Weighing
1. Press and hold the Function / Mode button until
Dynamic Weighing appears.
2. After confirmation by pressing Yes, the message
"Change parameter?" will appear on the screen.
3. Press Yes, and then the message "Average time 10
s" will display with the numeral "10" flashing. Press
No or Back to increase or decrease the value as
desired.
Note:
If the previously established reference sample weight needs to
be kept, press No when the message "Clear reference?"
displays.
Printing Setup:
Changing printing setup. See Section 7 for more information.

EN-12 PX Series Balance
4. Confirm the weighing time by pressing Yes, and the
message "Ready" 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
1. Averaging Time: Set the averaging time to a value between 1 and 15 seconds. Default is 10 seconds.
2. Printing Setup: Changing printing setup. See Section 7 for more information.
4.5 Density Determination
Note: Before using any application, be sure the balance has been leveled and calibrated.
Use this application to determine an object’s density.
A Density Determination Kit, Part Number 80253384, 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.

PX Series Balance EN-13
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.

EN-14 PX Series Balance
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.
 The 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).

PX Series Balance EN-15
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.
Solid Density Determinations for items Less Density Than Water
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).
Improving the Accuracy of the Result of Solid Density
The following tips should help you improve the accuracy of the results in the density determination of solids.
Temperature
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.
Air Buoyancy
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 cm3 of 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 cm3 volume of the body) is added to the
calculated result:
Calculated density + 0.0012 g/cm3 air buoyancy = effective density
Surface tension of the auxiliary liquid
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.
Liquid Density Determinations
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)

EN-16 PX Series Balance
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.
Porous Material Density Determinations
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.
To Determine Wet Density
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.
Operation Method
Press and hold the Function / Mode button until the Density appears on the screen.
After confirmation by pressing Yes, the message "Change parameter?" will display on the screen. The settings
can be kept or changed as desired.
Item Settings:
 Sample Type: Solid, Liquid
 Auxiliary Liquid: Water, Alcohol, Other
 Porous Material: Off, On
 Water Temperature: 20℃ (by default)
 Alcohol Temperature: 20℃ (by default)
 Volume (of Calibrated Sinker): 10 ml (by default)
 Weight (of Porous Material): 5.000 g
 Oil 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.

PX Series Balance EN-17
4.5.1 Measuring the Density of a Sinking Solid Using Water
Press and hold the Function / Mode button until Density
appears. Press Yes to initiate the Density Determination.
Item Settings:
 Sample type: Solid
 Auxiliary Liquid: Water
 Porous Material: Off
 Water Temperature: Measure the actual water
temperature using a precision thermometer.
The water temperature is 20.0℃ by default.
Press No or Back 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
Function / Mode 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.
Note: Lower the sample down into the liquid until it is fully
submerged.

EN-18 PX Series Balance
3. Press the Function / Mode button to get the density of the
sample. After completion of the test, press the Function /
Mode button to test a new sample.
4.5.2 Measuring the Density of a floating Solid Using Water
1. Press and hold the Function / Mode button until Density
appears. Press Yes 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 Function / Mode
button to test a new sample.
Note: Lower the sample down into the liquid until it is fully
submerged.
Holder for non-floating
solids
Holder for floating
solids
4.5.3 Measuring the Density of a Solid Using an Auxiliary Liquid other than Water
1. Press and hold the Function / Mode button until Density
appears. Press Yes to enter the Density Determination.