English

Quick Guide Precision and Analytical Balances ML-T

1 Safety Information

1.1

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

for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not avoided.

CAUTION

Attention

Note

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 hazard Electrical shock

1.2

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.

Precision and Analytical Balances Safety Information 3

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.

4 Safety Information Precision and Analytical Balances

2 Design and Function

2.1

Components

1 mg

3

0.1 mg

3

5 5

4

7

7

6

4

5

6

0.01 g

1 2 9

1 2 9

7

8

10 11 12 13 14 15 16

0.1 g

1 2

9

5

8

7

1 2 9

3

4

1

2

Capacitive color TFT touch screen

Operation keys

Glass draft shield

Handle for operation of the draft shield door

5

6

Weighing pan

7

8

Draft ring element

Level indicator

9

Safety feet (0.01 g and 0.1 g models)

Leveling feet

10

Socket for AC/DC adapter

11

Service switch (for MT representatives only)

12

RS232C serial interface

13

Kensington slot for anti-theft purposes

14

USB Device Connection

15

USB Host Connection

16

Bat.ON to switch the balance on during battery operation

Precision and Analytical Balances Design and Function 5

2.2

Peripheral devices

RS232C

USB

Device

USB

Host

Interfaces and possible connectivity of peripheral devices:

USB Device

PC

RS232C

Printer RS-P2x / P5x

Barcode Reader

RS 2 nd

Display

PC

For more information about the peripheral devices see at section Accessories.

2.3

Terminal keys

No.

Key

1

4

5

2

3

1 2

Name

ON/OFF

Capacitive color TFT touch screen

Tare

Zero

Home

3 4 5

Explanation

To switch the instrument on or off.

General navigation

To tare the balance.

To zero the balance.

To return from any menu level, or other window to the application home screen.

6 Design and Function Precision and Analytical Balances

2.4

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.

Precision and Analytical Balances Design and Function 7

2.4.1

Application home screen

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 [ ] in the lower right corner of the screen.

Prepare weight and start

Information and work bars

Name

1

Weighing information bar

2

Work title bar

3

Value bar

4

Main navigation

Explanation

Shows the weighing-in aid and general balance information.

Shows information about the current activity.

Shows information about the current weighing process.

Work-related functions.

Information fields

5

Name

Weighing-in aid

6

Short balance information

7

Weighing value field

8

Coach text field

Explanation

A dynamic graphic indicator shows the used amount of the total weighing range.

Readability and capacity of the balance.*

Shows the value of the current weighing process.

Shows instructions for the current weighing process.

* For approved balances: Min (minimum capacity) and e (Verification scale interval) are shown in the left upper corner.

Action buttons

Name

9

Main activity configuration

10

Detailed balance Information

11

Weighing unit

12

Activities

13

Print

14

Settings/Preferences

15

Status information field

Explanation

To configure the current application (e.g. Weighing).

Shows detailed technical data about the balance.

Shows the unit of the current weighing process.

To open the activities selection.

To print out results and/or settings (printer required).

To configure settings/preferences.

Shows information about the system status.

8 Design and Function Precision and Analytical Balances

2.4.2

Input Dialogs

2.4.2.1

Entering Characters and Numbers

The keyboard dialog allows the user to enter characters including letters, numbers and a variety of special characters.

ID 1 - Label

Name

1

Input field

2

Delete all

3

Switch

4

Discard

5

Page indicator

6

Confirm

7

Delete

8

Shift

9

Specialized tabs

10

Explanation field

Explanation

Shows the characters that have been entered.

To delete all entered characters.

If a switch appears on the right side in the content title bar, it must be switched on in order to enter a value.

To discard the entered data and to exit the dialog.

To navigate when the dialog consists of several steps.

To confirm the data entered.

To delete the last entered character.

To switch between lower and upper case letters.

To switch the keyboard mode for entering letters, numbers or special characters.

Extra information about the value to enter (e.g. the maximum number of characters available).

Precision and Analytical Balances Design and Function 9

2.4.2.2

Changing the date and time

The dialog (Picker view) allows the user to set the date and time.

Time

Name

1

Change date/time format

2

Pick button

3

Picker field

4

Pick button

5

Selection tabs

Explanation

Various date/time formats can be chosen.

Increment

Shows the defined time/date.

Decrement

Tabs of the selectable sub-categories

10 Design and Function Precision and Analytical Balances

2.4.3

Lists and tables

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.

General configuration

Weighing options

Publishing

Devices/connectivity

System settings

3

4

1

2

5

6

Name

List title

Contextual help

Back button

List element title

Scroll position

Selection tabs

Explanation

Title of the current list

Additional information about the current process

To go one step back.

Title of the list element

The list can be scrolled.

Tabs of the selectable sub-categories.

Precision and Analytical Balances Design and Function 11

2.4.4

Detailed balance information

Tab on [ ] to open the general balance information menu.

Balance information

Tap on [ ] to display balance information.

The display shows balance identification defined by the user (see the section system settings), information about the software and the hardware.

Balance support information

Tap on [ ] to display balance support information.

The display shows Support information, Service information (next service due) and Quick support request

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.

Balance ML204

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.

12 Design and Function Precision and Analytical Balances

3 Installation and Putting into Operation

This section describes how to put the new instrument into operation.

3.1

Scope of delivery

Components

Draft shield 235 mm

Weighing pan

Draft shield element

Pan support

Bottom plate

Ø 90 mm

Ø 120 mm

170 x 190 mm

Protective cover

Universal AC adapter (country specific)

Operating instructions printed or on

CD-ROM depending on the country

Quick Guide

EC declaration of conformity

0.1 mg

–

–

1 mg

–

–

–

0.01 g

–

–

–

–

–

–

0.1g

–

–

–

Precision and Analytical Balances Installation and Putting into Operation 13

3.2

Installing the components

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)

5

4

3

2

1

4

3

2

1

14 Installation and Putting into Operation Precision and Analytical Balances

Balances with readability of 10 mg with square 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).

2

5

4

3

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)

1

2

1

3.3

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

Precision and Analytical Balances Installation and Putting into Operation 15

3.4

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.

16 Installation and Putting into Operation Precision and Analytical Balances

3.5

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.

100% full

75%

50%

25%

15%

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).

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.

Precision and Analytical Balances Installation and Putting into Operation 17

3.6

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"

Air bubble at

Air bubble at

"6 o'clock"

"9 o'clock" turn left foot clockwise, right foot counterclockwise turn both feet counterclockwise 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.

18 Installation and Putting into Operation Precision and Analytical Balances

3.6.1

Leveling the balance using the leveling assistant

When the balance is switched on at its new location, the symbol The instrument is out of level appears 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.

Navigation: [ ] Quick settings/Preferences > [ ] Leveling assistant

Instrument is out of level

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.

Precision and Analytical Balances Installation and Putting into Operation 19

3.7

Transporting the balance

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 [

}

 15] 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.

3.8

General requirements

3.8.1

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 1 mg (0.01 ct) to 0.1 g.

• 60 minutes for balances with a readability of 0.1 mg (0.001 ct) and higher.

3.8.2

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.

20 Installation and Putting into Operation Precision and Analytical Balances

4 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.

4.1

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.

4.2

Switching off the balance

1 Press on [ ] and hold until the dialog Switch-off appears.

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.

Precision and Analytical Balances Weighing Made Simple 21

4.3

Main settings and activities at a glance

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.

Balance information

Application main configuration

General settings Activities

22 Weighing Made Simple Precision and Analytical Balances

4.4

Navigation on the touch screen

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.

4.4.1

Opening an application

To open settings or applications, tap with your finger on the symbol of the application (e.g. [ ] Weighing).

Activities

Weighing applications

Counting

Percent weighing

4.4.2

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.

Quick settings

Date and Time

Brightness

Sound

ON (3 of 3 beeps)

Language

Precision and Analytical Balances Weighing Made Simple 23

4.4.3

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.

4.5

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.

Navigation:

[ ] > Activities - Weighing applications > [ ] Weighing

1 Press [ ] to zero the balance or [

ð The initial screen looks like this:

] to tare the balance.

24

2 Place a sample on the weighing pan.

ð The unstability symbol

appears and the value in the weighing value field becomes light blue.

Weighing Made Simple Precision and Analytical Balances

ð After a short period of time, the weighing pan is stable. The unstability symbol disappears and the value in the weighing value field becomes dark blue again.

ð The weighing process is finished. The result appears on the screen.

4.6

Switching the weighing unit

There are several weighing units available. The default value is country-specific.

The weighing unit can be chosen via the main configuration of the current application or via shortcut. This example describes how to change the weighing unit via shortcut.

1 Tap on the weighing process unit (shortcut) gram (g).

ð the screen Main unit opens.

2 Put your finger somewhere in the list and drag up to scroll down.

Precision and Analytical Balances Weighing Made Simple 25

Main unit g (Default)

3 Choose another weighing unit (e.g. ounce (oz)) by tapping on it.

4 Tap on [ ] to confirm the chosen weighing unit.

ð The weighing unit gram (g) has been changed to ounce (oz).

Note 

With approved balances, this menu topic has a fixed setting and cannot be changed.

26 Weighing Made Simple Precision and Analytical Balances

4.7

Changing the resolution

There are several resolutions available. The default resolution is instrument-specific.

The resolution can be changed as follows:

1 Tap on the weighing value field.

2 Tap on 10d - 0.001 g.

3 Confirm the chosen resolution by tapping on [ ].

Resolution

ð The resolution has been changed.

Precision and Analytical Balances Weighing Made Simple 27

4.8

Zeroing

1 Unload the balance.

2 Press [ ] to set the balance to zero.

All weight values are measured in relation to the zero point.

Note 

Press [ ] before starting the weighing process.

4.9

Taring

1 Tap on [ ] to set the balance to zero.

2 Place the empty container on the balance.

ð The weight is displayed.

3 Press [ ] to tare the balance.

ð The status information field shows Net and the weighing value field shows 0.000 g.

28 Weighing Made Simple Precision and Analytical Balances

5 Maintenance

WARNING

Risk of electric shock

– The instrument must be disconnected from the power supply, before cleaning or other maintenance work to be performed.

– Use only the power cord from METTLER TOLEDO, if it needs replacing.

Please observe the following notes:

Note

On no account use cleaning agents which contain solvents or abrasive ingredients, as this can result in damage to the touch screen.

5.1

Cleaning the glass draft shield (0.1 mg and 1 mg models)

A

1 Turn the two lock covers (A) on the front.

2 Push the side gla ss doors back.

1 Tilt the front glass.

2 Remove the front glass.

Pull the top glass door out.

Lift the side glass doors and pull them out.

Precision and Analytical Balances Maintenance 29

Push the lock button to release the rear glass.

Remove the rear glass.

Remove weighing pan, pan support and bottom plate.

After cleaning reinstall all components in the reverse order. For balance mounting see section Installing the components.

5.2

Disposal

In conformance with the European Directive 2002/96/EC on Waste Electrical and Electronic

Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements.

Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment. If you have any questions, please contact the responsible authority or the distributor from which you purchased this device. Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related.

Thank you for your contribution to environmental protection.

30 Maintenance Precision and Analytical Balances

6 Technical Data

6.1

General Data

Power Supply

• AC operation:

• Battery operation:

Protection and Standards

• Overvoltage category:

• Degree of pollution:

• Protection:

• Standards for safety and EMC:

• Range of application:

Environmental conditions

• Height above mean sea level:

• Ambient temperature range::

• Relative air humidity::

• Warm-up time

Materials

• Housing:

• Weighing pan:

• Draft shield element:

• Draft shield:

• In-use-cover:

AC/DC Adapter

Primary: 100V–240V, ±10%, 50/60Hz, 0.3 A

Secondary: 12VDC, 0.84A (with electronic overload protection)

Power supply to the balance: 12 VDC, 0.84A

Use only with a tested AC Adapter with SELV output current.

Ensure correct polarity

8 standard 1.5 V AA (LR6) batteries (alkaline) for 8 hours of use.

II

2

Protected against dust and water.

See Declaration of Conformity

For use only in dry interior rooms up to 3500 m

10 to 30 °C

10% to 80 % up to 31 °C, linearly decreasing to 50 % at 40 °C, noncondensing

After connecting the balance to the power supply or switched on in battery operation at least

• 30 minutes on balances with a readability of 0.001 g to 0.1 g.

• 60 minutes on balances with a readability of 0.1 mg and better.

Top Housing: Plastic (ABS)

Bottom housing: Die-cast aluminum, lacquered

Stainless steel X2CrNiMo 17-12-2 (1.4404) with 0.1 mg models: Stainless steel X2CrNiMo 17-12-2 (1.4404)

Plastic (ABS), glass

Plastic (ABS)

Precision and Analytical Balances Technical Data 31

Mettler-Toledo AG, Laboratory Weighing

CH-8606 Greifensee, Switzerland

Tel. +41 (0)44 944 22 11

Fax +41 (0)44 944 30 60 www.mt.com

Subject to technical changes.

© Mettler-Toledo AG 06/2015

30203405A en

www.mt.com/balances

Further information

*30203405*