Mettler Toledo ME-T User Manual

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Precision and Analytical Balances

User Manual

ME-T

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Overview balance

0.1 mg

1 mg

10 mg~0.1 g

Balance overview legend

Capacitive color TFT touch screen

Level indicator

Weighing pan

Glass draft shield

Legal for trade (LFT) sealing

Socket for AC/DC adapter

USB device

Operating keys

Draft shield element

Handle for operation of the draft shield door

Leveling foot

Kensington slot for anti-theft purposes

RS232 serial interface

USB host

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Overview operation keys

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1 2

Terminal keys legend

No. Key Name Explanation

ON/OFF Switches the balance on or off.

Capacitive color TFT touch screen General navigation

Tare Tares the balance.

Zero Zeros the balance.

Home Returns from any menu level, or other window

to the application home screen.

1 Safety Information

• Read and understand the instructions in this User Manual before using the instrument.

• Keep this User Manual for future reference.

• Include this User Manual if you pass on the instrument to other parties.

If the instrument is not used according to the information in the Operating Instructions or if it is modified, the safety of the instrument may be impaired and Mettler-Toledo GmbH assumes no liability.

Additional information about this balance can be found in the Operating Instructions on the CDROM or online.

u www.mt.com/library

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

CAUTION

NOTICE

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

for a hazardous situation with low risk, resulting in minor or moderate injury if not avoided.

for a hazardous situation with low risk, resulting in damage to the balance, other material damage, malfunctions and erroneous results, or loss of data.

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Electrical shock

General hazard: read the Operating Instructions for information about the hazards and the resulting measures.

1.2 Product safety information

The balance has been tested for the experiments and intended purposes documented in the appropriate manual. However, this does not absolve you from the responsibility of performing your own tests of the products supplied by us regarding their suitability for the methods and purposes you intend to use them for.

Intended use

This balance is designed to be used in laboratories by trained staff. The balance is intended for weighing purposes.

Any other type of use and operation beyond the limits of technical specifications without written consent from Mettler-Toledo GmbH is considered as not intended.

Responsibilities of the balance owner

The balance owner is the person that uses the balance for commercial use or places the balance at the disposal of his staff. The balance owner is responsible for product safety and the safety of staff, users and third parties.

METTLER TOLEDO assumes that the balance owner provides the necessary protective gear, appropriate training for the daily work and for dealing with potential hazards in their laboratory.

Safety notes

WARNING

Risk of electric shock

Contact with parts that contain a live current can lead to injury and death. 1 Only use the METTLER TOLEDO power supply cable and AC/DC adapter designed for your

balance. 2 Connect the power cable to a grounded power outlet. 3 Keep all electrical cables and connections away from liquids and moisture. 4 Check the cables and power plug for damage and replace damaged cables and power

plugs.

NOTICE

Risk of damage to balance due to incorrect parts

Using incorrect parts with the balance can damage the balance or cause the balance to malfunction.

− Only use parts supplied with the balance, listed accessories and spare parts from Mettler-

Toledo GmbH.

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2 Design and Function

Prepare weight and start

2.1 User Interface

NOTICE

Risk of damaging the touch screen with pointed or sharp objects

Do not use pointed or sharp objects to navigate the touch screen. This may damage the surface of the touch screen.

− Operate the touch screen with your fingers.

The screen is a capacitive color TFT touch screen. The screen displays information and allows the user to enter commands by tapping certain areas on its surface. You can choose the information displayed on the screen, change the balance settings and perform certain operations on the balance.

Only those elements which are available for the current dialog appear on the display.

2.1.1 Application home screen

The application home screen appears after switching the balance on. It always displays the last application that was in use before the balance was switched off. The application home screen is the main screen of the balance. Every function can be accessed from here. You can return to the application home screen at any time by pressing the home button

in the lower right corner of the screen.

Information and work bars

Name Explanation

Weighing information bar Displays the weighing-in aid and general balance information.

Work title bar Displays information about the current activity.

Value bar Displays information about the current weighing process.

Main navigation Work-related functions.

Information fields

Name Explanation

Weighing-in aid A dynamic graphic indicator displays how much of the total weighing

Short balance information Readability and capacity of the balance.*

Weighing value field Displays the value of the current weighing process (model-specific).

Coach text field Displays instructions for the current weighing process.

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

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range is in use.

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Action buttons

ID 1 - Label

Name Explanation

Main activity configuration

Detailed balance information Displays detailed technical data about the balance.

Weighing unit Displays the unit of the current weighing process (model- and

Activities Opens the activities selection.

Print Prints out results and/or settings (printer required).

Settings/preferences Configures settings/preferences.

Status information field Displays information about the system status.

2.1.2 Input dialogs

2.1.2.1 Entering characters and numbers

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

If a barcode reader is connected to your balance and your sample provides a barcode, scan the product barcode instead of entering the designation manually. The name of the sample appears in the respective information field and can be printed on the reports. The ID is frequently scanned via barcode reader to ensure that the sample is clearly assigned to the corresponding product.

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

country-specific).

Name Explanation

Input field Displays all characters that have been entered.

Delete all Deletes all entered characters.

Discard Discards the entered data and exits the dialog.

Delete Deletes the last character.

Confirm Confirms the data entered.

Shift Switches between lower and upper case letters.

Specialized tabs Switches keyboard mode for entering letters, numbers or special characters.

Explanation field Extra information about the value to be entered (e.g. maximum number of

characters available).

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2.1.2.2 Changing the date and time

Time

General configuration

Weighing options

Publishing

Devices/connectivity

System settings

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

Name Explanation

Change date/time format Various date/time formats can be selected.

Pick button Increment.

Picker field Displays the defined time/date.

Pick button Decrement.

Selection tabs Tabs of the selectable sub-categories.

2.1.3 Lists and tables

The basic elements in a simple list include a content title and a list of sub-elements. Tapping an element opens a list of sub-elements or an input dialog.

Name Explanation

List title Title of the current list.

Contextual help Additional information about the current process

Back button Moves go one step back.

List element title Title of the list element.

Scroll position Scrolls through the list.

Selection tabs Tabs of the selectable sub-categories.

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2.2 Main settings and activities at a glance

Application main configuration

Balance information

General settings

Activities

The diagram below provides an overview of the main settings of an application (in this case, Weighing). Depending on the application, the options available to be selected and their content may differ. All applications is based on this concept.

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2.2.1 Touch screen navigation

Activities

Formula-

tion

Weighing applications

Counting

Percent weighing

Back-

weighing

Check

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. Using the screen to navigate is similar to using a smartphone or tablet PC.

Opening an application

Navigation:

To open settings or applications, tap with your finger on the application symbol (e.g.

> Activities - Weighing applications

Weighing).

There is not enough space to show all the weighing applications on one screen. Scroll horizontally to reach the applications on the second page.

Scrolling

Navigation:

> Quick settings

When the options are too numerous to be displayed on one screen, a blue bar on the right side appears. This means that the user can scroll up and down. To scroll simply place your finger anywhere on the list and drag it up or down.

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Using shortcuts

To simplify navigation on the capacitive color TFT touch screen, there are a few shortcuts that provide quick access to key areas of the balance. For example, the weighing value field on the application home screen works as a shortcut (see screen below), as does the weighing unit next to the weighing value field. Other shortcuts may be available to use depending on the application.

Every setting that can be changed directly via shortcut, can also be changed in the main configuration settings for that application.

3 Installation and Putting into Operation

Finding more information

Additional information about this balance can be found in the Operating Instructions on the CDROM or online.

u www.mt.com/library

WARNING

Risk of electric shock

The balance must be disconnected from the power supply before performing all setup and assembly work.

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3.1 Scope of delivery

NOTICE

Risk of damage to balance due to incorrect parts

Using incorrect parts with the balance can damage the balance or cause the balance to malfunction.

− Only use parts supplied with the balance, listed accessories and spare parts from MettlerToledo GmbH.

Components Model

0.1 mg 1 mg 10 mg / 100mg

Draft shield high, 235 mm – –

low, 170 mm – –

Weighing pan with pan support ø 90 mm – –

ø 120 mm – –

180 × 180 mm – –

Draft shield element –

Pan support – –

Protective cover

Universal AC/DC adapter -

AC/DC adapter with country-specific power cable - -

Operating Instructions or User Manual; printed or on CD-ROM depending on country of use

Declaration of conformity

3.2 Selecting the location

A good location will enable the balance to work accurately and reliably. The surface must be able to safely take the weight of the balance when fully loaded. The following local conditions must be observed:

If the balance is not horizontal at the outset, it must be leveled during commissioning.

• Operate the balance in indoor environments only and at an altitude of less than 4000 m above sea

level.

• Before switching on the balance, leave the parts to reach room temperature (+5 to 40°C).

Ensure that the relative humidity is between 10% and 80% and non-condensing conditions are met.

• The power plug must be easily accessible.

• Find a firm horizontal location which is as free from

vibrations as possible.

• Avoid direct sunlight.

• Avoid excessive temperature fluctuations.

• Avoid powerful drafts.

• Ensure that the surroundings as free from dust as

possible.

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3.3 Installing components

Balances with readability of 0.1 mg

Place the following components on the balance in the specified order:

1 Push the side glass doors back as far as they will go. 2 Insert the draft shield element (1). 3 Insert the weighing pan (2).

Balances with readability of 1 mg

Place the following components on the balance in the specified order:

1 Push the side glass doors back as far as they will go. 2 Insert the weighing pan (1).

Balances with readability of 10 mg / 100mg

Place the following components on the balance in the specified order:

1 Place the draft shield element (1). 2 Carefully pull apart the draft shield element to fix it

under the retaining plate. 3 Place the pan support (2). 4 Place the weighing pan (3).

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3.4 Connecting the balance

WARNING

Risk of electric shock

Contact with parts that contain a live current can lead to injury and death. 1 Only use the METTLER TOLEDO power supply cable and AC/DC adapter designed for your

plugs.

NOTICE

Risk to the AC/DC adapter due to overheating

If the AC/DC adapter is covered or in a container, it is not sufficiently cooled and will overheat. 1 Do not cover the AC/DC adapter. 2 Do not put the AC/DC adapter in a container.

The balance is supplied with a universal AC/DC adapter or an AC/DC adapter with a country-specific power cable.

• Install the cables so that they cannot be damaged or interfere with operation.

• Insert the power cable in a grounded power outlet that is easily accessible.

1 Connect the AC/DC adapter to the connection socket

on the back of your balance (see figure) and to the

power line. 2 Screw the plug tight to the balance. ð The balance is ready for use.

3.5 Setting up the balance

3.5.1 Switching on the balance

Before using 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 (60 minutes for 0.1mg models).

The balance is connected to the power supply.

− Press

ð The balance is ready to use. When the balance is switched on for the first time, the Weighing application home screen will open. If the

balance is switched on again, it will always go to the home screen of the application last used before switching it off.

3.5.2 Leveling the balance

Exact horizontal and stable positioning are essential for repeatable and accurate weighing results.

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ð After the start screen has disappeared, the application home screen will open.

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There are two adjustable leveling feet to compensate for slight irregularities in the surface of the weighing bench.

The balance must be leveled and adjusted each time it is moved to a new location.

1 Position the balance at the selected location. 2 Align the balance horizontally. 3 Turning the two front leveling feet of the housing until

the air bubble is in the middle of the glass.

Example

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 counterclockwise. Air bubble at 9 o'clock: turn left foot counterclockwise, right foot clockwise.

3.5.3 Adjusting the balance

To obtain accurate weighing results, the balance must be adjusted to match the gravitational acceleration at its location. This is also dependent on the ambient conditions. After reaching the operating temperature, it is important to adjust the balance in the following cases:

• Before the balance is used for the first time.

• After reaching the operating temperature.

• If the balance has been disconnected from the power supply or in the event of power failure.

• After significant environmental changes (e. g. temperature, humidity, air draft or vibrations)

• At regular intervals during weighing service.

3.6 Performing a simple weighing

Navigation:

This section describes how to perform a simple weighing operation. The basic navigation concept and the basic functions of the balance are also explained.

When you switch on the balance for the first time, the Weighing application home screen opens automatically. If the balance has already been used, the application that was last used before the balance was switched off will open. If another application is running, switch to Weighing.

1 Press

ð The application home screen appears.

2 Place the sample on the weighing pan.

ð The instability symbol

3 Wait until the instability symbol

blue again.

ð The weighing process is complete. ð The results are now displayed.

Zeroing

Use the

1 Unload the balance. 2 Press ð All weight values are measured in relation to this zero point.

> Activities - Weighing applications > Weighing

to zero the balance.

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

disappears and the value in the weighing value field becomes dark

zeroing key before starting to weigh anything.

to zero the balance.

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Taring

If you are working with a weighing container, tare the balance.

1 Place a container on the weighing pan.

ð The weight is displayed. 2 Press

ð 0.000 g and Net appears in the display. Net indicates that all weight values displayed are net

3 Place the sample in the container.

ð The results are now displayed.

• If the container is removed from the balance, the tare weight will be shown as a negative value.

• The tare weight remains stored until the

to tare the balance.

values.

key is pressed again or the balance is switched off.

Switching off

1 Press and hold 2 Tap

• After switching on from standby mode, the balance does not need to warm up. It is immediately ready to

• If the balance has been switched off manually, the display will also be off.

to confirm.

ð The balance switches off and enters standby mode.

start weighing.

To switch off the balance fully, it must be disconnected from the power supply.

until the dialog Switch-off appears.

4 Maintenance

4.1 Cleaning and servicing

Clean the weighing pan, draft shield element, bottom plate, draft shield (depending on the model) and housing of your balance at regular intervals. The balance is made from high-quality, durable materials and can therefore be cleaned using a damp cloth or a standard cleaning agent.

To thoroughly clean the draft shield glass panels, remove the draft shield from the balance. When reinstalling the draft shield, make sure it is in the correct position.

Please observe the following notes

WARNING

Risk of electric shock

Contact with parts carrying a live current can lead to injury and death. 1 Disconnect the balance from the power supply prior to cleaning and maintenance. 2 Only use METTLER TOLEDO power cables if they need to be replaced. 3 Prevent liquid from entering the balance, terminal or AC/DC adapter. 4 Do not open the balance, terminal or AC/DC adapter.

They do not contain any parts that can be serviced by the user.

NOTICE

Risk of damage to balance due to inappropriate cleaning methods

The balance is made from high quality, resistant materials and can be damaged by certain cleaning agents, solvents or abrasives. Any liquid that enters the housing may damage the balance.

1 Use water and a mild detergent to clean the balance or terminal. 2 Wipe off any spills immediately. 3 Prevent liquid from entering the interior of the balance.

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Contact a METTLER TOLEDO representative to find about the service options available – regular maintenance by an authorized service engineer will ensure consistent weighing accuracy over the long term and extend the service life of the balance.

4.2 Cleaning the draft shield (0.1mg and 1mg models)

Removing or inserting sliding glass doors

It is possible to remove the sliding glass doors for cleaning or for replacing.

Note

Front and rear glass panels cannot be removed.

1 Remove the handle. 2 Pull the side glass out to the rear. After cleaning, reinstall all components in the reverse

order. Installing the handle after insertion of the glass door.

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5 Technical Data

5.1 General data

WARNING

Risk of electric shock

Contact with parts that contain a live current can lead to injury and death. 1 Only use an approved AC/DC adapter with a current-limited SELV output. 2 Ensure correct polarity

Standard power supply

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

Balance power supply: 12 V DC, 0.84 A

NOTICE

If the balance is used above 2000 m mean sea level, the optional power supply must be used.

Optional power supply

AC/DC adapter: Primary: 100 – 240 V, ±10%, 50/60Hz

Cable for AC/DC adapter: 3-core, with country-specific plug Balance power supply: 12 V DC ±3%, 2.25 A, maximum ripple: 80 mVpp

Protection and standards

Overvoltage category: II Degree of pollution: 2 Protection: Protected against dust and water Standards for safety and EMC: See Declaration of Conformity Range of application: For use in closed interior rooms only

Environmental conditions

Height above mean sea level: Depending on the power adapter (2000 - 4000 m)

Ambient temperature: Operating conditions for ordinary lab application: +10 to 30°C

Relative air humidity: 10% up to 80% at 31°C with a linear decrease to 50% at

Warm-up time: At least 30 minutes (60 minutes for 0.1 mg models) after

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

Can be used up to 2000 m above mean sea level.

Secondary: 12 V DC ±3%, 2.5 A (with electronic overload protection)

Can be used up to 4000 m above mean sea level.

Except for China: max. 2000 m

(operability guaranteed between +5 and 40°C)

40°C, non-condensing

connecting the balance to the power supply. When switched on from standby, the instrument is ready for operation immediately.

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Materials

Housing: Top housing: Plastic (ABS)

Bottom housing: Die-cast aluminum

Weighing pan: Pan ø 90 mm: Stainless steel X2CrNiMo 17-12-2 (1.4404)

All others: Stainless steel X5CrNi 18-10 (1.4301) Draft shield element: 0.1 mg models: Stainless steel X5CrNi 18-10 (1.4301) Draft shield: Plastic (ABS), glass Protective cover: Plastic (PET) TFT touch screen surface: Glass

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Mettler-Toledo GmbH

30203401

Im Langacher 44 8606 Greifensee, Switzerland www.mt.com/contact

www.mt.com/balances

For more information