Weighing
Outputting Weight Readings
Selecting the Display
Ending Weighing
Menu Settings
Calibration
Functions Relating to Taring
Adjusting Response and Stability
Setting Units
Application Function Mode
Comparator Function
Connection and Communication
with Peripheral Devices
BALANCE
USING MORE CONVENIENTLYUSING THE
MAINTENANCE
Maintaining the Balance
Inspection
About Weights
What to Do If...
Responding to Messages...
Turning the Power ON and OFF
Backlight ON / OFF (TXB Only)
Changing the Password
GLP Output Function
Specifications
Maintenance Parts
List of Functions That Can Be Used
in Combination
Menu Map
TROUBLESHOOTING
INFORMATION
FOR YOUR
Requests
Provide this manual to the next user in the event that the instrument is transferred.
•
To ensure safe operation, contact your Shimadzu Balance representative for installation, adjustment, or
•
reinstallation after moving the instrument to a different site.
Notices
The content of this manual is subject, without notice, to modications for the sake of improvement.
•
Every effort has been made to ensure that the content of this manual was correct at the time of creation.
•
However, in the event that any mistakes or omissions are discovered, it may not be possible to correct
them immediately.
The copyright of this manual is owned by Shimadzu Corporation. Reproduction and duplication of whole
"Microsoft", "Windows", "Windows Vista" and "Excel" are registered trademarks of Microsoft
•
Corporation of the U.S.A. in the United States and other countries. All other company names and product
names that appear in this manual are trademarks or registered trademarks of the companies concerned.
Note that ™ and ® indications are not used.
The company names, organization names and product names in this manual are trademarks or registered
•
trademarks of the companies and organizations concerned.
Shimadzu does not guarantee that the WindowsDirect communication function will operate without
•
problems on all PCs. Shimadzu will accept no responsibility for any trouble that arises as a result of using
this function. You are recommended to back up all important data and programs in advance.
2
Introduction
Thank you for purchasing a Shimadzu TW/TX/TXB series
electronic balance.
The TW/TX/TXB series models are high performance electronic
balances that we condently recommend based on over 80 years of
precision balance manufacture. While these models are of course
capable of fast and accurate weighing, the TW/TX models all
use the Unibloc cells that Shimadzu started using for electronic
balances in 1989, and the TXB models use our unique, newly
developed and robust load cells, improving the reliability of the
balances still further.
The new TW/TX/TXB series balances also feature operation keys
for four directions, improving operating convenience and making
the balances easier to use.
These balances also feature a variety of other functions that
make it more convenient for customers to use them for their
own applications, including the WindowsDirect communication
function, which enables measuring results to be transferred to a
PC without installing any software.
To ensure that you can make full use of the performance
and functions of your TW/TX/TXB series balance, read this
instruction manual carefully and use the balance correctly in
accordance with the directions in the manual. When you have
nished reading the manual, keep it in a safe place together with
the balance so that you can refer to it at any time.
For information on the following points, please contact your
Shimadzu Balance representative.
Product warranty
•
After service
•
3
How to Find the Information You Need
This manual allows you to search for a function or operating procedure in a number of ways.
"Cover index"
"What You Can Do", page 6
"Menu Map", page 150
"Table of Contents", page 14
"Index", page 154
Conventions used in menu operations
Search for the information by thumbing through the manual.
Search for what you want to do.
Search quickly for the menu option you want to use.
Search for information based on its order of appearance in the
manual.
Search for information based on a key word.
The instruction manual describes menu operations in a simplied form.
Example:
Press or a number of times
to search for the next menu option.
Press to proceed
to the next menu option.
User
operations
Flow of menu
operations
Press to conr m.
Conventions used for the display panel
Information indicated
in the display panel
Press and hold
(about 3 seconds).
This instruction manual depicts the display panel in relation to particular operating procedures.
The actions of the display panel (ashing, lighting up, conrmation) are shown in the following
way.
Flashing•Lit•Conrmation•
/
/
/
/
/
/
/
/
/
/
/
/
/
/
4
Example page
Notes
Infor mation to help use the
balance correctly
Reference
Menu operation
Explanation of ter ms
Linked to the cover index (right-hand pages only)
Index
Depiction of the display
Continued on next pag e
The symbol shown i n the gure below
appears at the head of the next page.
The title of the previous page appears here.
5
What You Can Do
This section lets you search for a method you would like to try or a function you want to know about.
Various
weighing
methods
I want to weigh up to a xed quantity by adding
increments of the same sample (item to be weighed:
powder, liquid, etc.) a little at a time.
Pouring Mode page 77
I want to make ne adjustments during weighing,
like increasing the reaction speed of the display or
stabilizing the display.
Easy Setting page 78
I want to use the balance to count items.
I want to set unit weights (the weight of a single piece of the
item being weighed) for multiple samples in advance.
Piece Counting page 87
I want to weigh in percentages.
Percentage Weighing page 92
I want to weigh a xed amount of each of a number of
different samples (items to be weighed: powder, liquid, etc.)
and to mix these samples according to a formula.
Formulation page 96
I want to check excess or deciency with respect to a target
value and make "pass or fail" judgments accordingly.
Comparator Function page 102
I want to adjust the conditions under which the stability mark
lights up.
Adjusting the Stability Mark page 79
Zero point,
and taring
6
I want to stabilize the display at zero when an empty
sample container is placed on the pan.
Zero Tracking Function page 71
I want to automatically return the display to zero after
weighing.
Auto Zero Function page 72
I want to automatically tare the balance (set the display to
zero) after outputting a weight reading.
Auto Tare Function page 74
I want to tare the balance without waiting for the stability
mark to light up.
Zero / Tare Timing Change Function page 75
Calibration
I want to adjust the balance so that it is very accurate
after stabilization.
Span Calibration and Adjustment page 56
I want to carry out calibration and output a record.
Leaving a Record of Calibration page 67
I want to check the degree of drift in the balance's sensitivity.
Calibration Check page 60
Printing /
output
Miscellaneous
I want to send data to a PC (e.g. to Excel).
WindowsDirect Communication Function page 111
After weighing, I want to output automatically upon
stabilization.
Auto Print Function page 106
I want to output data continuously.
Continuous Output Function page 108
I want to output data either immediately or af ter stabilization.
Output Timing Change Function page 129
I want to change the format of the decimal point
(comma or period) in the output data.
Selecting the Decimal Point Display Symbol page 42
I want to add the balance model name,
ID and other information to weight readings.
GLP Output Function page 142
I want to display weights in units other than g (grams).
Switching Units page 41
Setting the Units page 82
I want the power to turn off automatically when I am
not using the balance.
Auto Power-Off Function page 138
I want to go directly into weighing mode when the power is
switched ON.
Setting the Startup Display page 139
7
Safety Precautions
To be strictly observed
To ensure that you use the balance safely and correctly, read the following precautions carefully and observe
them.
The levels of danger and damage that will arise if the balance is used incorrectly are classied and
indicated as shown below.
!
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor to
moderate injury or equipment damage.
Precautions are classied and explained by using one of the symbols below, depending on the nature
of the precaution.
Instru ction s
Indicates an action that must be
perfor med.
Prohibi tions
Indicates an action that must
NOT be performed
! CAUTION
Prohibi tions
Never disassemble, modify or attempt to
repair this product or any accessory.
You could sustain an electric shock or the product could
operate abnor mally.
If you believe that the balance has failed, contact you r
Shimadzu representative.
Prohibi tions
Do not use the balance
outdoors or anywhere where
it will be exposed to water.
You could sustain an electric shock or
the product could operate abnormally.
Use the balance with the specied power
Instru ction s
supply and voltage.
Using the balance with an i ncor rect power supply or
voltage will lead to re or trouble with the balance.
Note also that if the power supply or voltage is u nstable
or if the power supply capacity is insufcient, it will not
be possible to obtai n satisfactor y per formance from the
balance.
Instru ction s
If you detect anything
abnormal (e.g. a burning
smell) disconnect the AC
adapter immediately.
Continuing to use the balance with
an abnor mality could lead to re or
an electric shock.
Do not connect anything other than
peripheral devices specied by Shimadzu
Prohibi tions
8
to the balance’s connector.
If you do, the balance may stop work ing nor mally.
In order to avoid trouble, always connect peripheral
devices in accordance with the directions in this manual.
Prohibi tions
Do not use the balance
anywhere exposed to
explosive, combustible or
corrosive gases.
This could cause re or t rouble.
Prohibi tions
Precautions on Use
Avoid locations where the balance
will be exposed to any of the
following.
You may not be able to obtai n correct weight
readings.
Air ow from an ai r conditioner, ventilator,
•
door or window
Extreme temperature changes
•
Vibration
•
Direct sunlight
•
Dust, electromagnetic waves or a magnetic
•
eld
Instru ction s
Instru ction s
Install the balance on a
strong and stable at table
or oor.
Placing the balance in an unst able site
could lead to injury or t rouble with
the bala nce.
When selecting the installation site,
take into account the combined
weight of the balance and the item to
be weighed.
After a power outage, turn
the power back ON.
When a power outage occurs, the
power is shut off automat ically.
Therefore, begin operation from
"Turning the Power ON" (^ page
31) again.
Instru ction s
Instru ction s
Treat the balance with care and respect.
The balance is a precision instrument. Subjecting it to
impacts could cause it to fail.
When moving the balance, remove pan and pan
suppor ter. Grasp it rmly with bot h hands to car ry it.
If the balance has to be stored for a long t ime, store it in
the packaging box in which it was delivered.
Use the correct weighing units.
Using incorrect weighing un its can lead to accidents as
a result of weighing errors.
Check that the weighing u nits are cor rect before
star ting weighing.
9
This Declaration of Conformity is valid only for models that bear the CE mark on the main body of
the balance.
10
Electromagnetic Compatibility
Descriptions in this section apply to all models:
TW , TX , TXB series
This product complies with European standard EN55022 : 2006 , class B for electromagnetic
interference (Emissions) and minimum requirement for electromagnetic susceptibility
(Immunity).
EN55022 Emissions (Electromagnetic Interference)
This is a class B product.
When this product causes an electromagnetic disturbance to devices being used near this
product, create an appropriate distance between those devices and this product in order to
eliminate the disturbance.
EN55024 Immunity (Electromagnetic Susceptibility)
Test conditions are as follows.
EN 61000-4-2 Electrostatic Discharge: Air: 8 kV, Contact: 4 kV
EN 61000-4-3 Radiated, Radio-Frequency, Electromagnetic Field: 3 V/m
EN 61000-4-4 Transient/Burst (Electrical Fast Transients): 1 kV to AC power line and
ground
EN 61000-4-5 Voltage Surge: 1 kV line to line, 2 kV line
to ground
EN 61000-4-6 Conducted RF Immunity: 3 V
EN 61000-4-8 Power Frequency Magnetic Field Immunity: 1 A/m
EN 61000-4-11 Voltage Variations/Dips/Interrupts: >95% drop
Compliance with these standards does not ensure that the product can operate at a level of
electromagnetic interference that is stronger than the level tested. Interference stronger than the
values specied above may cause the product to malfunction.
When installing or using this product, especially in an industrial location:
Locate the product away from any device emitting strong levels of electromagnetic noise.
Use a power source that is separated from the power source of any device emitting strong
levels of electromagnetic noise.
To prevent static electricity:
Prior to touching the product, the operator should be sure to discharge the static
electricity stored in their body by rst touching a grounded metallic structure.
Do not touch any terminals or connectors that are not connected to cables while the
product is turned ON.
11
Shimadzu Balances and 21 CFR Part 11
21 CFR Part 11
21 CFR Part 11, Electronic Records, Electronic Signatures, Final
Rule (often referred to as Part 11) is the United States Food and Drug
Administration (FDA) regulation affecting computer resources and
electronic records that are used for any document that is required to be
kept and maintained by FDA regulations.
Requirements concerning computer resources security are key
elements in Part 11.
The controls implemented as a result of security related requirements
are intended to result in trusted records.
Shimadzu CLASS-Balance Agent
Shimadzu provides a means for compliance with 21 CFR Part 11 with
Shimadzu CLASS-Balance Agent software, part of a comprehensive
laboratory data management system, Shimadzu CLASS Agent.
Ask your Shimadzu representative about it.
Shimadzu WindowsDirect
When Shimadzu balances are integrated with laboratory software by
means of our WindowsDirect function, no communication software is
required or used.
The Shimadzu balance functions as a primary device in the system,
just as a keyboard, mouse or other data entry hardware does.
For this reason, system validation and compliance may be greatly
simplied with the use of Shimadzu balances.
Two-way Communication
Shimadzu balances have always been computer friendly and they can
be set up for bi-directional communication as part of a fully automated
production system or LIMS.
This manual includes the command codes and information needed by
programmers to integrate Shimadzu balances with their software.
12
Action for Environment (WEEE)
To all user of Shimadzu equipment in the European Union:
Equipment marked with this symbol indicates that it was sold on or after 13th August 2005,
which means it should not be disposed of with general household waste. Note that our equipment
is for industrial/professional use only.
Contact Shimadzu service representative when the equipment has reached the
end of its life. They will advise you regarding the equipment take-back.
With your co-operation we are aiming to reduce contamination
from waste electronic and electrical equipment and preserve natural
resource through re-use and recycling.
Do not hesitate to ask Shimadzu service representative, if you require
further information.
WEEE Mark
13
Table of Contents
Table of Contents
1 BEFORE WEIGHING 20
Name and Function of Components . . . . . . . . . . . . . . . . . . . . . . . . . 20
The TW/TX Series comprises toploading electromagnetic balances with UniBloc weighing
mechanism.
Main body
Pan
Place the object to be weighed
here.
Display panel
Shows the weighing results,
information for making
function settings, the current
function setting, errors, codes
and other information.
(^ page 23)
Level
Indicates the level of the
balance.
(^ page 29)
Operation keys
Used to tare the balance,
perform calibration and print.
(^ page 2 2)
Level screws
Adjust to level the balance.
(^ page 29)
Windbreak
(included with small
pan models only)
Even a slight breeze may affect
measurement, so the windbreak
is provided to avoid air
movements in the surroundings
inuencing the weight reading.
Product label
The model name and serial
number are stated here.
Menu operation keys
Used to specify function
settings and menu operations.
(^ page 2 2)
20
Back of the unit
RS-232C connector
(9-pin socket)
Used to make a serial
connection to a PC or other
equipment.
Kensing ton Security
Slot
This is a slot in which a lock can
be tted for anti-theft purposes.
The socket c onforms to the
specications of the Kensington
company.
DATA I/O connector
Used to connect to a pr inter
(e.g. EP-80 or EP-90).
(^ page 124)
DC IN connector
Used to connect an AC
adapter for power supply.
Ground terminal
Connect this terminal to
ground if necessary.
TXB Series
The TXB Series comprises load cell type toploading balances that can be powered by batteries
as well as AC power.
Main body
WEIGHING
BEFORE
Level
Indicates the level of the
balance.
(^ page 29)
Display panel
Shows the weighing results,
information for making function
settings, the cur rent function
setting, errors and other
information. (^ page 23)
Operation keys
Used to tare the balance,
perform calibration and print.
(^ page 2 2)
Underside of the unit
Level screws
Adjust to level the balance.
(^ page 29)
Menu operation keys
Used to specify function
settings and menu operations.
(^ page 2 2)
Pan
Place the object to be weighed
on here.
Product label
The model name and serial
number are stated here.
Battery compartment
Six size A A alkaline batteries
(^ page 32)
USING THE
BALANCE
USING MORE CON VENIENTLYMAINTENANCE
Back of the unit
RS-232C connector
(9-pin socket)
Used to make a serial
connection to a PC or other
equipment.
Kensing ton Security
Slot
This is a slot in which a lock can
be tted for anti-theft purposes.
The socket c onforms to the
specications of the Kensington
company.
DATA I/O connectorGround terminal
Used to connect to a pr inter
(EP-80, EP-9 0, etc.).
(^ page 124)
Connect this terminal to
ground if necessary.
Continued on next page
DC IN connector
To run the balance on
AC power, connect
the AC adapter here.
21
TROUBLESHOOTING
INFORM ATION
FOR YOUR
BEFORE WEIGHING
1
Name and Function of Components
Operation k eys
∗1 With the TXB se ries, is provided.
Operation Keys
No.Key
[BREA K]
1
[CAL]Performs calibrationEnters the calibration menu-
2
[O/T]
3
[PRINT]
4
Symbo l display
area
∗1
1234879
Press Once and Release ...
Switch between t he oper ation
and sta ndby modes
Tares the balance (setting it to
zero)
Outputs the weight read ing to a
peripheral device (printer or PC)
Numer ic valu e /
menu di splay a rea
During Weighing
Press and Hold for About
Opens the zero / tare menu-
Opens the dat a output menu-
Unit di splay a reaMenu op erat ion keys
3 Seconds ...
-
65
During Menu Operat ion
Suspends calibration /
numer ical value entr y.
22
Menu Operation Keys
No.Key
[MEN U/
5
ENTER]
[UN IT]
6
[FUNC]
7
[Res]
8
[Stb]
9
Press Once and Release ...
Displays the main menuShows the menu displayed last
In the weighing mode: Used
•
to select the unit
•
When piece counting:
Displays the unit weight
•
When perfor ming percentage
weighing: Displays the
reference weight
Switches between the weighing
mode and the application
function mode
The response of the display is
increased.
The stability of the display is
increased.
During Weighing
Press and Hold for About
In the weighing mode: Opens
•
the unit sett ing menu
When piece counting: Used to
•
select the item number
When perfor ming percentage
•
weighing: Used to select the
percentage reference
Selects the minimum number of
displayed digits
3 Seconds ...
-
-
During Menu Operat ion
Conrms a nd sets t he
displayed entr y
Scrolls backwa rd through
•
menu options
When entering numerical
•
values: Increases the value
Scrolls forward through
•
menu options
When entering numerical
•
values: Reduces the value
Takes you to a higher level
•
in the menu hierarchy
When entering numerical
•
values: Moves the focus
one digit to the left
Suspends menu operation
•
Takes you to a lower level
•
in the menu hierarchy
When entering numerical
•
values: Moves the focus
one digit to the rig ht
Display Panel
DisplayNameDescription
Battery sy mbol
Zero tracking symbolLit when the zero tracking function is set ON.Page 71
Weight symbolThis symbol is lit during calibration.
Easy setting indicator
Pouring symbol
Formulation symbolLit during mixing measurement (formulation) operations.Page 96
Menu lock symbolLit while the menu is locked.Page 52
Menu operation key
symbol
Auto pri nt symbolLit when the auto print function is set.Page 108
Win symbol
Communication symbolIndicates that dat a is being exchanged with an external device.-
Lights up when the power supply voltage is low, for example
when the battery voltage is low.
Indicates what level the response a nd stability are currently
set to.
Lit when the pouring mode is set.
During menu operation, indicates which of the menu operation
keys can be used.
Lit when the WindowsDi rect communication function has
been set.
See:
Page 33
Page 57
Page 62
Page 78
Page 77
Page 47
Page 112
WEIGHING
BEFORE
USING THE
BALANCE
USING MORE CON VENIENTLYMAINTENANCE
Comparator sy mbol
Stability mark
Minus symbolLit when the weight reading is negative.-
Ready sy mbol
Number symbolLit when it is possible to enter numerical values.Page 49
Hold symbol
Net weight symbol
Gross weight symbol
Item number indicationShows the item number in the piece counting mode.Page 90
Inverse triangle symbol
Piece cou nting symbolLit while the piece counting mode is i n effect.Page 90
Specic percentage
weighing symbol
Percentage weighing
symbol
When the comparator f unction (Check weighing) has been set,
indicates the compar ison judgment.
Lit when the weight reading is stable. Lit when the option
currently set in menu setting is displayed.
Lit during the standby mode (TW/TX Series only). During
weighing, lit to indicate the ready to weigh status, for example
when using the for mulation function.
Lit when a value that is not the real-time weight reading (for
example the indication of the unit weight in piece counting) is
displayed.
Indicates that the weight reading displayed in mixing
measu rement (formulation) is the net weight of the current
component with the weight of the container and prior
components. Also indicates that a measuring operation is in
progress.
Indicates that the weight reading displayed in mixing
measu rement (formulation) is the tot al weight of all of the
components of the mixture with the weight of the cont ainer
subtracted.
When this symbol is lit when changing the position of the
decimal point i n the conversion factor wit h the of user-
specied units, numerical values can be entered without a
decimal point.
Lit when the specic percentage reference has been set for
percentage weighing.
Lit during percentage weighi ng.Page 95
Page 102
Page 48
Page 79
Page 43
Page 96
Page 90
Page 95
Page 97
Page 97
Page 50
Page 94
TROUBLESHOOTING
INFORM ATION
FOR YOUR
23
BEFORE WEIGHING
1
Installation
Choosing the Installation Site
The measuring performance of the balance is greatly inuenced by the environment where it is
installed.
Observe the following points to ensure safe and accurate weighing.
! Caution
Do not use the balance anywhere
exposed to explosive, combustible
Prohibi tions
or corrosive gases.
This could cause re or t rouble.
Instructions
Prohibi tions
Use the correct power supply and voltage with the balance.
Using an incorrect power supply or voltage with the balance will lead to re or trouble
with the balance.Note also that if the power supply or voltage is unstable or if the power supply capacity
is insufcient, it will not be possible to obtain satisfactory performance from the
balance.
Precautions on Use
Avoid locations where the balance will be exposed to any of the
following.
Air ow from an ai r conditioner,
•
ventilator, door or window
24
Precautions on Use
Prohibi tions
Avoid locations where the balance will be exposed to any of the
following.
Extreme temperature changes•
Vibration from surroundi ngs or nea rby
•
equipment
Direct sunlight•
WEIGHING
BEFORE
USING THE
BALANCE
USING MORE CON VENIENTLYMAINTENANCE
Instru ction s
Dust, electromagnetic waves or a
•
magnetic eld
Install the balance on a strong and stable at table or oor.
Placing the balance in an unst able site could lead to injur y or trouble with the balance.
When selecting the installation site, take into account t he combined weight of the
balance and the item to be weighed.
Continued on next page
25
TROUBLESHOOTING
INFORM ATION
FOR YOUR
BEFORE WEIGHING
1
Installation
Unpacking and Delivery Inspection
The items packed will differ depending on the model of balance ordered.
Check that all of the items indicated below are included in the package, and that nothing has
been damaged.
The numbers in the boxes [ ] indicate the quantity of each item.
TX Series (large pan model) TX***2L
Balance main body [1]Pan [1]
Inst ruction manual [1]
TW/TX Series (small pan model) TW**3L, TX**3L
Menu map sheet
TW/TX Series (carat model) TWC**3L, TXC**3L
Balance main body (with wi ndbreak) [1]Pan [1]
Pan supporter cap [4]
[1]
26
Pan supporter [1]
Inst ruction manual [1]
Underplate [1]Pan r ing [1]
(TWC**3L, TXC**3L only)
Menu map sheet
[1]
Pan with grip [1]
(TWC**3L, TXC**3L only)
TXB Series (large pan model)
TXB Series (small pan model)
TXB***1L, TXB***0L
TXB**2L, TXB**1L
Balance main body [1]
Pan supporter [1]
Inst ruction manual [1]
Installing the Components
The procedure for tting the components differs depending on the model of the balance.
Pan [1]Balance main body [1]Pan [1]
Pan ring [1]
Pan supporter [1]
Menu map sheet
[1]
Pan ring [1]
WEIGHING
BEFORE
USING THE
BALANCE
USING MORE CON VENIENTLYMAINTENANCE
TX Series (large pan model) TX***2L
Fit the four pan supporter caps.
1
Place the pan on the pan supporters.
2
PanPan
Pan suppor ter capsPan suppor ter caps
Continued on next page
27
TROUBLESHOOTING
INFORM ATION
FOR YOUR
BEFORE WEIGHING
1
Installation
TW/TX Series (small pan model) TW**3L, TX**3L
TW/TX Series (carat model) TWC**3L, TXC**3L
Fit the underplate.
1
Open the glass door and insert the underplate
slowly while tilting it.
Be careful not to knock against the surroundings.
Fit the pan ring.
2
(TWC**3L, TXC**3L only)
Place the pan supporter.
3
Place the pan on the pan supporters.
4
Align the two pan notches with the left and right
on the balance main body.
TXB Series (common to large pan models and small pan models)
Fit the pan ring.
1
1
Align the two pan ring notches with the
left and right on the balance main body,
and engage the four projections on the
pan ring in notches in the balance main
body.
UnderplateUnderplate
Pan
Pan
Pan suppor ter
Pan suppor ter
Pan ring
Pan ring
Notches in the
Notches in the
pan ring
pan ring
28
Turn the pan ring counterclockwise until
2
it clicks into place.
Caution
Turn the pan ring until it
Instru ction s
clicks into place.
If the pan ring is not tu rned
sufciently, it will come into
contact with the pan, and the
display of the balance will become
unstable.
Place the pan supporter.
Pan
Pan
2
Pan suppor ter
Pan suppor ter
Place the pan on the pan supporter.
3
Align the two pan notches with the left and right
on the balance main body.
Adjusting the Level of the Balance
The level of this balance is maintained by three-point suppor t involving a single xed foot at
center rear on the underside of the main body and two level screws on left and right at the f ront
of the underside of the main body.
The large pan model also has level screws on left and right at the back, but they are used in an
auxiliary role to prevent the balance from tilting when a heavy sample is placed on the pan.
Operation of the level screws
*
Turning the level screws clockwise, as viewed from above, extends t hem and raises the
balance, while t ur ning them counterclockwise retracts them and lowers the balance.
Level screws (auxiliar y)
Large pan model only
WEIGHING
BEFORE
USING THE
BALANCE
USING MORE CON VENIENTLYMAINTENANCE
Level
Level the balance by following the procedure below.
Fixed foot
Level screws
Turn all the level screws (total of four at front and rear)
1
counterclockwise as viewed from above until they come to a gentle
stop.
The balance will now be tilting toward the front, with the auxiliar y level screws at the back of
the large pan model lifted off the installation surface.
Continued on next page
29
TROUBLESHOOTING
INFORM ATION
FOR YOUR
BEFORE WEIGHING
1
Installation
Adjust the two level screws at the front so that the air bubble in the
2
level becomes centered in the left/right direction.
At this stage it doesn't matter if the air bubble isn't centered in the front/rear direction.
If the air bubble is left of center
Turn the front right level screw clockwise.
If the air bubble is right of center
Turn both the level screws at the front in the same direction at the
3
same time to center the air bubble in the level in the front/back
direction.
Adjust so as to bring the air bubble into the center of the circle.
On turning the t wo level screws at the f ront in t he clockwise
direction…
On turning the t wo level screws at the f ront in t he
counterclockwise direct ion…
With the large pan model…
Turn both of the auxiliary level screws at the rear clockwise to extend
4
them to the point where they make light contact with the installation
surface.
Note that if you overextend the auxiliary level screws at the rear the balance will become unstable.
Turn the front left level screw clockwise.
The bubble moves toward
the front.
The bubble moves toward
the back.
30
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