1.1Conventions and symbols used in these operating instructions7
2.1Definition of signal warnings and symbols8
2.2Product safety information8
3.1Components10
3.2Peripheral devices11
3.3Terminal keys11
3.4User Interface12
3.4.1Application home screen13
3.4.2Input Dialogs14
3.4.2.1Entering Characters and Numbers14
3.4.2.2Changing the date and time15
3.4.3Lists and tables16
3.4.4Detailed balance information17
4.1Scope of delivery18
4.2Installing the components19
4.3Selecting the location20
4.4Connecting the instrument21
4.5Battery Operation22
4.6Leveling the balance23
4.6.1Leveling the balance using the leveling assistant24
4.7Transporting the balance25
4.8Weighing below the balance25
4.9General requirements26
4.9.1Warming up the balance26
4.9.2Adjusting the balance26
5 Weighing Made Simple27
5.1Switching on the balance27
5.2Switching off the balance27
5.3Main settings and activities at a glance28
5.4Navigation on the touch screen29
5.4.1Opening an application29
5.4.2Scrolling29
5.4.3Using shortcuts30
5.5Performing a simple weighing30
5.6Switching the weighing unit31
5.7Changing the resolution33
5.8Zeroing34
5.9Taring34
5.10Working with IDs35
5.10.1Defining an ID35
5.10.2Workflow options36
5.11Statistics37
6 Activities38
6.1Activities - Weighing applications38
6.1.1Weighing39
6.1.2Counting40
6.1.3Percent Weighing42
Table of Contents3Precision and Analytical Balances
6.1.4Formulation44
6.1.5Dynamic Weighing46
6.1.6Check Weighing48
6.1.7Factor Weighing52
6.1.8Totaling53
6.2Activities - Adjustments and tests55
6.2.1FACT Fully automatic internal adjustment56
6.2.2Internal Adjustment57
6.2.3External Adjustment58
7 General Settings59
7.1Quick settings59
7.1.1Date and time59
7.1.2Brightness59
7.1.3Sound59
7.1.4Language60
7.1.5Glove mode60
7.1.6Quick Adjustment60
7.1.7Leveling assistant60
7.2General configuration61
7.2.1Weighing options61
7.2.2Publishing62
7.2.3Devices/connectivity64
7.2.4System settings65
7.2.5ISO-log66
7.2.6Access protection66
8 Communication with Peripheral Devices67
8.1PC-Direct Function67
8.2USB Device Interface68
9 Firmware (Software) Updates70
9.1Operating principle70
9.2Update procedure71
10 Error and Status Messages72
11 Maintenance73
11.1Cleaning the glass draft shield (0.1 mg and 1 mg models)73
11.2Disposal74
12 Interface Specification75
12.1RS232C interface75
12.2USB host76
12.3USB device76
12.4MT-SICS interface commands and functions77
13 Technical Data78
13.1General Data78
13.2Model-Specific Data79
13.2.1Balances with Readability of 0.1 mg with Draft Shield79
13.2.2Balances with Readability of 1 mg with Draft Shield81
13.2.3Balances with Readability of 0.01 g82
13.2.4Balances with Readability of 0.1 g84
13.3Dimensions85
13.3.1Balances with readability of 0.1 mg with draft shield (235 mm)85
13.3.2Balances with readability of 1 mg with draft shield (235 mm)86
13.3.3Balances with readability of 0.01 g with square weighing pan and draft shield
element87
Table of Contents4Precision and Analytical Balances
13.3.4Balances with readability of 0.1 g with square weighing pan88
14 Accessories and Spare Parts89
14.1Accessories89
14.2Spare parts93
Index95
Table of Contents5Precision and Analytical Balances
1 Introduction
Thank you for choosing a METTLER TOLEDO balance. The precision and analytical balances of the ML-T
line combine a large number of weighing possibilities with easy operation.
These operating instructions apply to all balance models of the ML-T line and are based on the initially
installed firmware (software) version V 3.32.
u www.mt.com/balances
1.1 Conventions and symbols used in these operating instructions
Key and button designations are indicated by a picture or text in square brackets (e.g. [
These symbols indicate an instruction:
§ prerequisites
1 steps
2 ...
ð results
]).
Introduction7Precision and Analytical Balances
2 Safety Information
2.1 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
CAUTION
Attention
Note
for a hazardous situation with medium risk, possibly resulting in severe
injuries or death if not avoided.
for a hazardous situation with low risk, resulting in damage to the device
or the property or in loss of data, or minor or medium injuries if not
avoided.
(no symbol)
for important information about the product.
(no symbol)
for useful information about the product.
General hazardElectrical shock
2.2 Product safety information
Intended use
Your balance is used for weighing. Use the balance exclusively for this purpose. Any other type of use and
operation beyond the limits of technical specifications without written consent from Mettler-Toledo AG, is
considered as not intended.
It is not permitted to use the instrument in explosive atmosphere of gases, steam, fog, dust
and flammable dust (hazardous environments).
General safety information
This balance complies with current industry standards and the recognized safety regulations; however, it
can constitute a hazard in use. Do not open the balance housing: The balance contains no user-serviceable
parts. In the event of problems, please contact a METTLER TOLEDO representative.
Always operate and use your instrument only in accordance with the instructions contained in this manual.
The instructions for setting up your new instrument must be strictly observed.
If the instrument is not used according to these Operating Instructions, protection of the instrument
may be impaired and METTLER TOLEDO assumes no liability.
Staff safety
These operating instructions must be read and understood before using the balance. These operating
instructions must be retained for future reference.
The balance must not be altered or modified in any way. Only use METTLER TOLEDO original spare parts
and accessories.
Safety Information8Precision and Analytical Balances
Safety notes
CAUTION
Damage to the balance
a) Only use indoors in dry locations.
b) Do not use pointed objects to operate the touch screen!
The balance is of a very sturdy design, but is still a precision instrument. It must be
handled with care.
c) Do not open the balance:
The balance contains no user-serviceable parts. In the event of problems, please
contact a METTLER TOLEDO representative.
d) Only use METTLER TOLEDO original accessories and peripheral devices for the
balance.
These are specifically designed for the balance.
WARNING
Risk of electric shock
Use only the original universal AC/DC adapter delivered with your balance, and check that
the voltage printed on it is the same as your local power supply voltage. Only plug the
adapter into a socket which is grounded.
Safety Information9Precision and Analytical Balances
3 Design and Function
3
5
4
1
2
9
7
0.1 mg
1 2
9
7
4
6
5
3
0.01 g
5
7
129
8
6
0.1 g
8
5
1
29
7
16
101213
14 15
11
3.1 Components
Capacitive color TFT touch screen
1
Operation keys
2
Glass draft shield
3
Handle for operation of the draft shield door
4
Weighing pan
5
Draft ring element
6
Level indicator
7
Safety feet (0.01 g and 0.1 g models)
8
Leveling feet
9
Socket for AC/DC adapter
10
Service switch (for MT representatives only)
11
RS232C serial interface
12
Kensington slot for anti-theft purposes
13
USB Device Connection
14
USB Host Connection
15
Bat.ON to switch the balance on during battery
16
operation
Design and Function10Precision and Analytical Balances
3.2 Peripheral devices
USB
Device
RS232C
USB
Host
5
34
12
Interfaces and possible connectivity of peripheral devices:
USB DeviceRS232C
PCPrinter RS-P2x / P5x
Barcode Reader
RS 2nd Display
For more information about the peripheral devices see at section Accessories [}89].
3.3 Terminal keys
PC
No.KeyNameExplanation
1
2
3
4
5
ON/OFFTo switch the instrument on or off.
Capacitive color TFT touch screenGeneral navigation
TareTo tare the balance.
ZeroTo zero the balance.
HomeTo return from any menu level, or other
window to the application home screen.
Design and Function11Precision and Analytical Balances
3.4 User Interface
The screen is a capacitive color TFT touch screen. The screen not only displays information, it also allows
the user to enter commands by tapping on certain areas on its surface. You can choose the information
displayed on the screen, change balance settings or perform certain operations on the instrument.
Only those elements which are available for the current dialog appear on the display.
CAUTION
Do not touch the touch screen with pointed or sharp objects!
This may damage the touch screen.
Design and Function12Precision and Analytical Balances
3.4.1 Application home screen
Prepare weight and start
The application home screen appears after the startup of the instrument. It always shows the last
application that was being used before the balance was switched off. The application home screen is the
main screen of the balance, from where every function can be accessed. You can always return to the
application home screen by pressing on the home button [
Information and work bars
NameExplanation
Weighing information barShows the weighing-in aid and general balance information.
1
Work title barShows information about the current activity.
2
Value barShows information about the current weighing process.
3
Main navigationWork-related functions.
4
] in the lower right corner of the screen.
Information fields
NameExplanation
Weighing-in aidA dynamic graphic indicator shows the used amount of the total
5
weighing range.
Short balance informationReadability and capacity of the balance.*
6
Weighing value fieldShows the value of the current weighing process.
7
Coach text fieldShows instructions for the current weighing process.
8
* For approved balances: Min (minimum capacity) and e (Verification scale interval) are shown in the left
upper corner.
Action buttons
NameExplanation
Main activity configuration
9
Detailed balance InformationShows detailed technical data about the balance.
10
Weighing unitShows the unit of the current weighing process.
11
ActivitiesTo open the activities selection.
12
PrintTo print out results and/or settings (printer required).
Status information fieldShows information about the system status.
15
To configure the current application (e.g. Weighing).
Design and Function13Precision and Analytical Balances
3.4.2 Input Dialogs
ID 1 - Label
3.4.2.1 Entering Characters and Numbers
The keyboard dialog allows the user to enter characters including letters, numbers and a variety of special
characters.
NameExplanation
Input fieldShows the characters that have been entered.
1
Delete allTo delete all entered characters.
2
SwitchIf a switch appears on the right side in the content title bar, it must be
3
switched on in order to enter a value.
DiscardTo discard the entered data and to exit the dialog.
4
Page indicatorTo navigate when the dialog consists of several steps.
5
ConfirmTo confirm the data entered.
6
DeleteTo delete the last entered character.
7
ShiftTo switch between lower and upper case letters.
8
Specialized tabsTo switch the keyboard mode for entering letters, numbers or special
9
characters.
Explanation fieldExtra information about the value to enter (e.g. the maximum number of
10
characters available).
Design and Function14Precision and Analytical Balances
3.4.2.2 Changing the date and time
Time
The dialog (Picker view) allows the user to set the date and time.
NameExplanation
Change date/time formatVarious date/time formats can be chosen.
1
Pick buttonIncrement
2
Picker fieldShows the defined time/date.
3
Pick buttonDecrement
4
Selection tabsTabs of the selectable sub-categories
5
Design and Function15Precision and Analytical Balances
3.4.3 Lists and tables
General configuration
Weighing options
Publishing
Devices/connectivity
System settings
Basic elements of a simple list include a content title and a list of sub-elements. Tapping on an element
opens a list of sub-elements or an input dialog.
NameExplanation
List titleTitle of the current list
1
Contextual helpAdditional information about the current process
2
Back buttonTo go one step back.
3
List element titleTitle of the list element
4
Scroll positionThe list can be scrolled.
5
Selection tabsTabs of the selectable sub-categories.
6
Design and Function16Precision and Analytical Balances
3.4.4 Detailed balance information
Balance ML204
-Tab on [
] to open the general balance information menu.
Balance information
Tap on [
The display shows balance identification defined by the user (see the section system settings),
information about the software and the hardware.
] to display balance information.
Balance support information
Tap on [
The display shows Support information, Service information (next service due) and Quick support
request
] to display balance support information.
Quick support request
Quick support request contains an unique QR code. If you have a QR (Quick Response) code reader on
your smart phone, you can take a picture of the QR code. The smartphone creates an email with all relevant
service information.
Note
Make sure that the QR code can be identified by the smart phone. A program to read the QR codes must be
installed. Make sure that there are no access restrictions, which could block your email program in some
way.
Design and Function17Precision and Analytical Balances
4 Installation and Putting into Operation
This section describes how to put the new instrument into operation.
4.1 Scope of delivery
Components0.1 mg1 mg0.01 g0.1g
Draft shield235 mm––
Weighing panØ 90 mm–––
Ø 120 mm–––
170 x 190 mm––
Draft shield element––
Pan support
Bottom plate––
Protective cover
Universal AC adapter (country
specific)
Operating instructions printed or
on CD-ROM depending on the
country
Quick Guide
EC declaration of conformity
Installation and Putting into Operation18Precision and Analytical Balances
4.2 Installing the components
2
3
4
1
5
2
3
1
4
Balances with readability of 0.1 mg, with draft
shield (235 mm)
Place the following components on the balance in
the specified order:
Note
Push the side glass back as far as it will go and
hold the draft shield (1) with both hands on the bars
at the top.
• Bottom plate (2)
• Draft shield element (3)
• Pan support (4)
• Weighing pan (5)
Balances with readability of 1 mg, with draft
shield (235 mm)
Place the following components on the balance in
the specified order:
Note: Push the side glass back as far as it will go
and hold the draft shield (1) with both hands on the
bars at the top.
• Bottom plate (2)
• Pan support (3)
• Weighing pan (4)
Installation and Putting into Operation19Precision and Analytical Balances
Balances with readability of 10 mg with square
5
4
3
2
1
2
1
weighing pan and draft shield element
1 Remove the two screws (1)
2 Remove the plate (2) and retain it.
3 Place draft shield element (3) and fix it with the
two screws.
4 Place pan support (4) with weighing pan (5).
Balances with readability of 0.1 g with square
weighing pan
-Place the following components on the balance in
the specified order:
• Pan support (1)
• Weighing pan (2)
4.3 Selecting the location
Your balance is a sensitive precision instrument; the location where it is placed will have a profound effect
on the repeatability and accuracy of weighing results. Chose a stable surface that is as horizontal as
possible. The surface must be able to safety carry the weight of a fully loaded balance.
Observe ambient conditions (see Technical Data).
Avoid the following:
• Direct sunlight
• Air drafts (e.g. from fans or air conditioners)
• Temperature fluctuations
• Vibrations
Installation and Putting into Operation20Precision and Analytical Balances
4.4 Connecting the instrument
The balance is supplied with a country-specific AC/DC adapter or with a country-specific power cable. The
power supply is suitable for all line voltages in the range: 100 - 240 VAC, 50/60 Hz. For detailed specifications, see the section Technical Data.
CAUTION
Allow the balance to warm up for 30 minutes (0.1 mg models need 60 minutes) to adapt itself to the
ambient conditions.
Connect the AC/DC adapter to the connection socket on the back of your
balance and to the power line.
Attention
• Check if the local power supply falls within this range. If this is not the case, under no circumstances
connect the AC/DC adapter to the power supply, but contact a METTLER TOLEDO representative.
• The power plug must be accessible at all times.
• Prior to use, check the power cable for damage.
• Route the cable in such a way that it cannot be damaged or cause a hindrance when working.
• Ensure that no liquid ever comes into contact with the AC/DC adapter.
Installation and Putting into Operation21Precision and Analytical Balances
4.5 Battery Operation
The balance can be operated with batteries. Under standard operation conditions, the balance works for
about 8 hours (using alkaline batteries). After the AC power supply is interrupted e.g. by withdrawing the
power plug or if there is a power failure, the balance switches to battery operation. Once the AC power
supply is restored, the balance reverts automatically to AC operation.
Note
Rechargeable batteries can be used. Batteries can NOT be charged by the balance.
Rechargeable batteries have a lower voltage of 1.2 V. Therefore, the battery indication shown on the
balance might differ from the actual battery status.
In battery operation mode, a battery symbol appears in the status
information field. The size of the white bar indicates the battery
condition. When the batteries status reaches 25%, part of the
symbol becomes red. If the status is lower than 15%, the whole
symbol becomes red.
CAUTION
• The balance must be disconnected from the power supply when replacing batteries.
• Do not place the balance on the pan support location bolt.
• Read and follow all warnings and instructions supplied by the battery manufacturer.
• Do not mix different types or brands of batteries. Performance of batteries varies depending on the
manufacturer.
• Remove the batteries from the balance if the balance is not used for a long period of time.
• Batteries must be disposed of properly, according to local regulations.
Note
The balance works with 8 standard AA (LR6) batteries (alkaline batteries preferred).
100% full
75%
50%
25%
15%
Changing batteries
1 Remove weighing pan, pan support and draft shield element or
draft shield "100 mm" if present.
2 Turn the balance carefully on its side.
3 Open and remove the battery chamber cover.
4 Insert / replace the batteries with the correct polarity as shown in
the battery holder.
5 Insert and close the battery chamber cover.
6 Turn the balance carefully to its normal position.
7 Reinstall all components in the reverse order.
Installation and Putting into Operation22Precision and Analytical Balances
4.6 Leveling the balance
Exact horizontal positioning and stable installation are prerequisites for repeatable and accurate weighing
results.
Note
To compensate for small irregularities or inclinations (±2 %), the instrument must be leveled and adjusted
each time it is moved to a new location.
The balance can be levelled with the leveling assistant and/or with the level indicator on top of the terminal.
There are two adjustable leveling feet to compensate for slight irregularities in the surface of the weighing
bench.
Balances with two levelling feet
-Adjust the two front leveling feet until the air bubble comes to rest
exactly in the middle of the glass:
Air bubble at"12 o'clock"turn both feet clockwise
Air bubble at"3 o'clock"turn left foot clockwise, right
foot counterclockwise
Air bubble at"6 o'clock"turn both feet counter-
clockwise
Air bubble at"9 o'clock"turn left foot counterclockwise,
right foot clockwise
Balances with four levelling feet
1 First turn the two rear leveling feet all the way in.
2 Adjust the two front leveling feet as previously described.
3 Turn the rear leveling feet down onto the surface for extra
stabilizing safety, so the balance cannot tilt over under eccentric
loads.
Installation and Putting into Operation23Precision and Analytical Balances
4.6.1 Leveling the balance using the leveling assistant
Instrument is out of level
When the balance is switched on at its new location, the symbol
in the status information field at the left side of the screen.
1 Tap on [
ð The screen Notifications opens.
2 Select The instrument is out of level.
ð The function Leveling assistant opens.
The function Leveling assistant is a step-by-step guidance that helps in leveling the balance.
After following the instructions, the leveling assistant will show the next steps. Follow the steps until the
balance is levelled.
Note
Always use the physical air bubble of the level indicator as a reference.
Installation and Putting into Operation24Precision and Analytical Balances
4.7 Transporting the balance
A
Switch off the balance and remove the power cable and any interface cable from the balance. Refer to the
notes in section Selecting the location [}20] regarding the choice of an optimal location.
Transporting over short distances
CAUTION
For balances with a draft shield:
Never lift the balance by its glass draft shield. The draft shield is not sufficiently fastened
to the balance.
Transporting over long distances
CAUTION
If you would like to transport or ship your balance over long distances, use the complete
original packaging.
4.8 Weighing below the balance
The balances are equipped with a hanger for carrying out weighings below the work surface.
CAUTION
• Do not place the balance on the pan support location bolt (0.1 mg and 1 mg models).
• Models with a glass draft shield: Carefully lift the draft shield from the weighing platform and put it
aside.
1 Switch off the balance and remove the power cable and any
interface cable from the balance.
2 Remove weighing pan, pan support and draft shield element or
"Easy draft shield" if present.
3 Turn the balance carefully on its side.
4 Remove one of the caps (A) depending on the model.
5 Then turn the balance to its normal position and simply reinstall
all components in the reverse order.
Installation and Putting into Operation25Precision and Analytical Balances
4.9 General requirements
4.9.1 Warming up the balance
Before working with the balance, it must be warmed up in order to obtain accurate weighing results. To
reach operating temperature, the balance must be connected to the power supply for at least:
• 30 minutes for balances with a readability of 1mg (0.01ct) to 0.1g.
• 60 minutes for balances with a readability of 0.1mg (0.001ct) and higher.
4.9.2 Adjusting the balance
To obtain accurate weighing results, the balance must be adjusted to match the gravitational acceleration at
its location and depending on the ambient conditions. After reaching the operation temperature, an
adjustment is necessary in the following cases:
• Before the balance is used for the first time.
• When the balance (readability of 0.1 mg) was disconnected from the power or switched off in battery
operation or in case of a power failure.
• After a change of location and after the warming-up phase.
• At regular intervals during weighing service.
Installation and Putting into Operation26Precision and Analytical Balances
5 Weighing Made Simple
This section describes how to perform a simple weighing. In addition, the basic concept of the navigation
and the basic functions of the balance are explained.
5.1 Switching on the balance
Switching on the balance for the first time
1 Remove any load from the weighing pan.
2 Connect the balance using the AC/DC adapter to the mains.
ð After the start screen has disappeared, the balance starts with the application home screen.
After the balance has switched on for the first time, it can be switched on by pressing long on [
Note
When the balance is switched on for the first time, the home screen of the application Weighing opens. If
the balance is switched on again, it always starts with the home screen of the application that was last
used before switching off.
5.2 Switching off the balance
1 Press on [
2 Tap on [
ð the balance switches off and goes into standby mode.
Note
• After switching on from standby mode, the balance needs no warm-up time and is immediately ready
for weighing.
• If the balance has been switched off after a preselected time, the display is dimly lit and shows the time
and the date.
• If the balance has been switched off manually, the display is off.
To completely switch off the balance, it must be disconnected from the power supply.
] and hold until the dialog Switch-off appears.
].
].
Weighing Made Simple27Precision and Analytical Balances
5.3 Main settings and activities at a glance
Application main
configuration
Balance information
General settingsActivities
The diagram below provides an overview of the main settings of an application (in this example,
Weighing). Depending on the application, the selectable options and their content can differ. Every
application is based on this concept.
Weighing Made Simple28Precision and Analytical Balances
5.4 Navigation on the touch screen
Activities
Weighing applications
Counting
Percent weighing
Percent
weighing
Quick settings
Date and Time
Brightness
Sound
ON (3 of 3 beeps)
Language
To interact with the balance, use the screen and the operating keys at the bottom of the screen. The
navigation on the screen is similar to the navigation on a smart phone or tablet PC.
5.4.1 Opening an application
To open settings or applications, tap with your finger on the symbol of the application (e.g. [
Weighing).
5.4.2 Scrolling
When the options are too numerous to be shown on one screen, a blue bar on the right side appears. This
means that the user can scroll up and down. For scrolling, simply place your finger somewhere in the list
and drag it up or down.
]
Weighing Made Simple29Precision and Analytical Balances
5.4.3 Using shortcuts
To simplify navigation on the capacitive color TFT touch screen, there are a few shortcuts that allow quick
access to the most important areas of the balance. The weighing value field on the application home screen
for example works as a shortcut (see diagram below), so does the weighing unit next to the weighing value
field. Depending on the application, there may be other shortcuts that can be used.
Note
Every setting that can be changed directly via shortcut, can also be changed in the main configuration
settings of the application.
5.5 Performing a simple weighing
When you switch on the balance for the first time, the home screen of the application Weighing opens
automatically. If the balance was used already, the last used application before the balance was switched
off opens. If another application is running, switch to the application Weighing.