Mettler Toledo ME User Manual

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METTLER TOLEDO

METTLER T

L EDO

Precision and Analytical Balances

User Manual

Page 2

Page 3

EULA

The software in this product is licensed under the METTLER TOLEDO End User License Agreement (EULA) for Software.

When using this product you agree to the terms of the EULA.

This User Manual is a brief instruction that provides information to handle with the first steps of the instrument in a safe and efficient manner. Personnel must have carefully read and understood this manual before performing any tasks.

For full information, always consult the Reference Manual (RM).

u www.mt.com/EULA

u www.mt.com/me-RM

 3Precision and Analytical Balances

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Overview balance

METT

LER TOLEDO

METT

LER TOLEDO

ETTLER TOLEDO

METTLER TOLEDO

0.1 mg

1 mg

10 mg~100 mg

Display

Leveling foot

Weighing pan

Level indicator

Glass draft shield

Socket for AC adapter

Operation keys

Handle for operation of the draft shield door

Draft shield element

Kensington slot for anti-theft purposes

RS232C serial interface

Legal for Trade (LFT) sealing

Overview balance4 Precision and Analytical Balances

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Overview operation keys

1 2 3 4 5

Legend key functions

No. Key Press briefly (less than 1.5 s) Press and hold (longer than 1.5 s)

• Cancel or leave menu without saving

• One step back in the menu

• Print display value

• Transmit data

• To navigate backwards in the menu or

menu selection

• Decrease parameters in menu or appli-

cations

• Zero/Tare

• Switch on

• With entries, scroll down

• To navigate forward menu topics or menu

selections

• To toggle between unit 1, recall value (if

selected), unit 2 (if different from unit 1) and the application unit (if any)

• Increase parameters in menu or appli-

cations.

• Enter or leave menu selection

• To enter application parameter digit and

switch to next parameter digit

• To accept parameter in menu selection.

• Select the simple weighing application

• Exit application

• Open the application list for selecting an

application

• Switch off into standby mode

• Select adjustment (calibration)

– with internal weight *

– with external weight

– Customer fine adjustment *

* On models with internal weight only

• Enter or leave menu (parameter settings)

• To store parameter

• To accept numeric inputs in applications.

Overview operation keys 5Precision and Analytical Balances

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1 Safety Information

Two documents named "User Manual" and "Reference Manual" are available for this instrument.

• The User Manual is printed and delivered with the instrument.

• The electronic Reference Manual contains a full description of the instrument and its use.

• Keep both documents for future reference.

• Include both documents if you transfer the instrument to other parties.

Only use the instrument according to the User Manual and the Reference Manual. If you do not use the instrument according to these documents or if the instrument is modified, the safety of the instrument may be impaired and Mettler-Toledo GmbH assumes no liability.

1.1 Further applicable documents

For full information, always consult the Reference Manual (RM).

u www.mt.com/me-RM

Search for software downloads u www.mt.com/labweighing-software-download

1.2 Definitions of signal warnings and warning symbols

Safety notes contain important information on safety issues. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results. Safety notes are marked with the following signal words and warning symbols:

Signal words

WARNING

CAUTION

NOTICE

Warning symbols

Electrical shock

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

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

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

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

Notice

1.3 Product specific safety notes

Intended use

This instrument is designed to be used in laboratories by trained staff. The instrument 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.

Safety Information6 Precision and Analytical Balances

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Responsibilities of the instrument owner

The instrument owner is the person holding the legal title to the instrument and who uses the instrument or authorizes any person to use it, or the person who is deemed by law to be the operator of the instrument. The instrument owner is responsible for the safety of all users of the instrument and third parties.

METTLER TOLEDO assumes that the instrument owner trains users to safely use the instrument in their workplace and deal with potential hazards. METTLER TOLEDO assumes that the instrument owner provides the necessary protective gear.

Personal protective equipment

Chemical resistant safety gloves are intended to protect hands against aggressive chemicals.

The protective goggles protect the eyes from flying parts and liquid splashes.

Safety notes

WARNING

Death or serious injury due to electric shock

Contact with parts that carry a live current can lead to death or injury. 1 Only use the approved METTLER TOLEDO power supply cable and AC/DC adapter with a

current-limited SELV output. 2 Connect the power cable to a grounded power outlet, ensure correct polarity. 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

Damage to the instrument due to the use of unsuitable parts

Using unsuitable parts with the instrument can damage the instrument or cause it to malfunction.

− Only use parts from METTLER TOLEDO that are intended to be used with your instrument.

NOTICE

Damage to the instrument or software

In some countries, excessive mains voltage fluctuations and strong glitches may occur. This may affect the instrument functions or damage the software.

− Use a voltage regulator for stabilizing.

Safety Information 7Precision and Analytical Balances

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2 Design and Function

Application Icons

Status Icons

Weighing-in aid

Weight Value Field

Unit Field

2.1 Display

Application Icons

Application "Weighing" Application “Totaling”

Application "Piece counting" Application “Dynamic weighing”

Application "Percent weighing" Application “Multiplication factor”

Application "Check weighing" Application “Division factor”

Application "Statistics" Application “Density”

Application “Formulation / Net-Total” Menu locked

While an application is running, the corresponding application icon appears at the top of the display.

Status Icons

Indicates stored value (Memory) Feedback for pressed keys

Indicates Net weight values Weighing range 1 (Dual Range models only)

Adjustments (calibration) started Weighing range 2 (Dual Range models only)

Service reminder

Weight Value Field and Weighing-in aid

Indicates negative values Brackets to indicate uncertified digits

Indicates unstable values Marking of nominal or target weight

Indicates calculated values Marking of tolerance limit T+

(approved models only)

Marking of tolerance limit T-

Design and Function8 Precision and Analytical Balances

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Unit Field

WEIGH

0.00

I00.0%

APP.LIST

0.00

COUNT

FORMULA

gram

kilogram

milligram

carat

pound

ounce

dwt

mom

msg

2.2 Basic principles for operation

Selecting simple weighing or terminate application

− Press and hold until WEIGH appears on the display.

ð The balance returns to the simple weighing mode.

Note

How to perform simple weighing see Performing a simple weighing.

Selecting an application

1 Press and hold F until APP.LIST (application list).

ð Last active application, e.g., COUNT appears on the

display. 2 Select an application by multiple pressing 3 To execute selected application press

Available applications

troy ounce

ozt

grain

pennyweight

momme

mesghal

Hong Kong taels

tlh

tls

tlt

tola

baht

Singapore taels

Taiwan taels

tola

baht

Display Remark Description

COUNT

PERCENT

CHECK

STAT

FORMULA

TOTAL

DYNAMIC

FACTOR.M

FACTOR.D

DENSITY

Piece counting

Percent weighing

Checkweighing

Statistics

Formulation / Net-Total

Totaling

Dynamic weighing

Multiplication factor

Division factor

Density

see Application "Piece Counting"

see Application "Percent Weighing"

see Application "Check Weighing"

see Application "Statistics"

see Application "Formulation" (Net Total Formulation)

see Application "Totaling"

see Application "Dynamic Weighing"

see Application "Multiplication Factor Weighing"

see Application "Division Factor Weighing"

see Application "Density"

Design and Function 9Precision and Analytical Balances

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Entering the menu

406.2

ADVANCE

BASIC

TIME

DATE

ENVIRON.

STABLE

ENVIRON.

01. 2500

01. 6500

01.6500

1 Press and hold Menu to enter main menu.

ð The first menu BASIC is displayed (except menu

protection is active). 2 Press 3 Press

Detailed description of the menu see The Menu.

Selecting menu topics

1 Press .

2 Press

Changing settings in selected menu topic

1 Press .

2 Press

3 Press For store the setting see section Saving settings and closing

the menu.

repeatedly to change menu.

to confirm the selection.

Note

ð The next menu topic appears in the display.

repeatedly, the balance switches to the next

menu topic.

ð The display shows the current setting in the selected

menu topic.

repeatedly, the balance switches to the next

selection. ð After the last selection, the first is shown again.

to confirm the setting.

Changing settings in a submenu selection

The same procedure as for menu topics.

Input principle of numerical values

1 Press to select a digit (cyclically from left to right) or a

value (depending on the application). ð The selected digit or the selected value is blinking.

2 Press

3 Press and hold

Design and Function10 Precision and Analytical Balances

to increase or F to decrease for changing

blinking digits or values.

to confirm the value.

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Saving settings and closing the menu

SAVE:YES

SAVE:NO

1 Press and hold Menu to leave menu topic.

ð SAVE:YES appears on the display.

2 Press

3 Press

4 Press

to toggle between SAVE:YES and SAVE:NO.

to execute SAVE:YES.

ð Changes are saved.

to execute SAVE:NO.

ð Changes are not saved.

Cancel

During menu operation

1 Press C for leaving menu topic or menu selection without

saving (one step back in the menu).

2 To leave menu topic or menu selection without saving

press C (one step back in the menu).

During application operation

− Press C to cancel settings. ð The balance returns to the previous active application.

Note

If no entry is made within 30 seconds, the balance reverts to last active application mode. Changes are not saved. If changes are made, the balance asks SAVE:NO.

Design and Function 11Precision and Analytical Balances

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3 Installation and Putting into Operation

3.1 Selecting the location

A balance is a sensitive precision instrument. The location where it is placed will have a profound effect on the accuracy of the weighing results.

Requirements of the location

According to the environmental condition, see chapter "General data".

Ensure that the instrument is:

• indoor on

stable table

Avoid:

• direct sunlight • vibrations • strong drafts • temperature

3.2 Scope of delivery

Components 0.1 mg 1 mg 10 mg / 100 mg

Draft shield high, 235 mm – –

Weighing pan with pan support ø 90 mm – –

Draft shield element –

Pan support – –

Protective cover

Universal AC/DC adapter

User Manual

Declaration of conformity

• with sufficient

distance (>15cm)

low, 170 mm – –

ø 120 mm – –

180 × 180 mm – –

• in level • adequately lit

fluctuations

3.3 Unpacking

Open the balance packaging. Check the balance for transport damage. Immediately inform a METTLER TOLEDO representative in the event of complaints or missing accessories.

Retain all parts of the packaging. This packaging offers the best possible protection for transporting the balance.

Installation and Putting into Operation12 Precision and Analytical Balances

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3.4 Installing components

METTLER

TOLE

M ET

LER TOLE

CAUTION

Injury due to breaking glass

Careless handling with the glass components can lead to breakage off glass and damage cuttings.

− Always proceed focused and with care.

Balances with a readability of 0.1 mg with draft shield (235mm)

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

Push the side glass doors back as far as they will go.

1 Place draft shield element (1). 2 Place weighing pan (2).

Balances with a readability of 1 mg with draft shield (170mm)

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

Push the side glass doors back as far as they will go.

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

Installation and Putting into Operation 13Precision and Analytical Balances

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Balances with a readability of 10 mg / 100 mg

METTLER TOLEDO

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

1 Place draft shield element (1): carefully pull apart the draft

shield element to fix it under the retaining plate. 2 Insert pan support (2). 3 Place weighing pan (3).

3.5 Installing protective cover

METTLER TOLEDO

NOTICE

Damage to the instrument due to the use of unsuitable parts

Using unsuitable parts with the instrument can damage the instrument or cause it to malfunction.

− Only use parts from METTLER TOLEDO that are intended to be used with your instrument.

Balances with readability of 0.1mg / 1mg Balances with readability of 10 mg / 100 mg

Install the protective cover according to the illustrations below, using a screwdriver Philips No. 2.

Install the protective cover according to the illustrations below, using a screwdriver Torx TX20.

Installation and Putting into Operation 15Precision and Analytical Balances

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3.6 Connecting the balance

WARNING

Death or serious injury due to electric shock

Contact with parts that carry a live current can lead to death or injury. 1 Only use the approved METTLER TOLEDO power supply cable and AC/DC adapter with a

NOTICE

Damage 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 an universal AC/DC adapter and a country-specific plug. The AC/DC adapter is suitable for use with the following voltage range: 100 – 240 V AC, 50/60 Hz.

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

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

− Connect the AC/DC adapter to the connection socket on the back of your balance (see figure) and to the power line.

ð The balance performs a display test (all segments in

the display light up briefly), WELCOME, Software version, Maximum load and Readability appears briefly.

ð The balance is ready for use.

Installation and Putting into Operation16 Precision and Analytical Balances

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3.7 Setting up the balance

0.00

MT.GREEN

3.7.1 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.

The balance is in STANDBY mode. MT.GREEN appears on

the display.

− Press ð The balance is ready for weighing or for operation with the

Legal-for-trade

Approved balances can only be switched on by pressing

3.7.2 Leveling the balance

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

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

last active application.

in selected countries.

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

Air bubble at 6 o'clock: turn both feet counterclockwise. Air bubble at 9 o'clock: turn left foot counterclockwise,

counterclockwise.

right foot clockwise.

3.7.3 Setting date and time

When you put your new instrument into operation for the first time, you should enter the current date and time.

Installation and Putting into Operation 17Precision and Analytical Balances

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Note

BASIC

SET.TIME

DATE

TIME

06.05.12

13.30

SAVE:YES

DATE

TIME

+1H

• These settings are retained even if you disconnect your instrument from the power supply.

• A reset of the instrument will not change these settings.

• Set the current date according to the date format DATE.FRM in the menu ADVANCE..

• Set the current time according to the time format TIME.FRM in the menu ADVANCE..

1 Press and hold Menu until menu BASIC appears on the

display.

2 Press

3 Press 4 Set current date. Press

5 Press and hold

6 Set current time. Press 7 Press

8 Select SET.TIME by pressing 9 Press 10 Press

11 Press and hold

12 Press and hold

13 Press

to open menu BASIC.

ð DATE appears.

to confirm.

press

to set current day, month or year.

ð DATE appears..

to confirm.

ð +1H appears.

to confirm. to select hours or minutes; press to set

current hours or minutes.

ð TIME appears.

ð SAVE:YES appears.

to confirm.

to select day, month or year;

to confirm the settings.

to select TIME.

to confirm the settings.

to store the settings.

Installation and Putting into Operation18 Precision and Analytical Balances

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3.7.4 Adjusting the balance

1250.38

0.00

1182.03

¢¢¢¢¢¢¢¢

¢¢¢¢¢¢

0.00

121.01

¢¢¢¢

0.01

0.00

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.

• 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.

For full information, always consult and download the Reference Manual (RM).

u www.mt.com/me-RM

3.8 Performing a simple weighing

The weighing application allows you to perform simple weighings and how you can accelerate the weighing process.

If your balance is not in the weighing mode, press and hold the display. Release the key. Your balance is in the weighing mode and set to zero.

1 Press to zero the balance. 2 Place weighing sample on the weighing pan. 3 Wait until the instability detector

stability beep sounds.

4 Read the result.

disappears and the

key down until WEIGHING appears in the

Zeroing

Use the

1 Unload the balance. 2 Press

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

Taring

If you are working with a weighing container, first set the balance to zero.

zeroing key before you start with a weighing.

to set the balance to zero.

Installation and Putting into Operation 19Precision and Analytical Balances

Page 20

121.01

¢¢¢¢

0.00

¢¢¢¢

95.97

¢¢¢¢¢¢¢

121.01

¢¢¢¢

Net

1 Place empty container on the weighing pan.

0.00

MT.GREEN

ð The weight is displayed.

2 Press

ð 0.00 g and Net appears in the display. Net indicates

that all weight values displayed are net values. 3 Place weighing sample into the weighing container. ð The result appears in the display.

• 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

pressed again or the balance is switched off.

to set the balance to zero.

key is

Switching off

− Press and hold the key until STANDBY appears on the

display. Release the key.

ð MT.GREEN appears on the display.

• After switching on from standby mode, your balance needs

no warm-up time and is immediately ready for weighing.

• To completely switch off the balance, disconnect it from the

power supply.

Legal-for-trade

Standby mode is not possible with approved balances (only available in selected countries).

For full information, always consult and download the Reference Manual (RM).

3.9 Transporting the balance

1 Press and hold the key. 2 Disconnect the balance from the power supply. 3 Disconnect all interface cables.

Installation and Putting into Operation20 Precision and Analytical Balances

Injury due to breaking glass

Careless handling with the glass components can lead to breakage off glass and damage cuttings.

1 Do not lift the instrument by the glass draft shield. 2 Always proceed focused and with care.

CAUTION

u www.mt.com/me-RM

Page 21

3.9.1 Transporting over short distances

ETTLER TOLEDO

To move the balance over a short distance to a new location, follow the instructions below.

1 Hold the balance with both hands as shown. 2 Carefully lift the balance and carry it to its new location. If you want the balance put into operation, proceed as follows:

1 Connect in reverse order. 2 Level the balance. 3 Perform an internal adjustment.

3.9.2 Transporting over long distances

For transporting the balance over long distances, always using the original packaging.

3.9.3 Packaging and storage

Packaging

Store all parts of packaging in a save place. The elements of the original packaging are developed specifically for the balance and its components to ensure maximum protection during transportation or storing.

Storage

Store the balance under following conditions:

• Indoor and in the original packaging.

• According to the environmental condition, see chapter "General data".

• When storing for longer than six months, the rechargeable battery maybe down (date and time get lost).

Installation and Putting into Operation 21Precision and Analytical Balances

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4 Maintenance

To guarantee the functionality of the balance and the accuracy of the weighing results, a number of maintenance actions must be performed by the user.

4.1 Maintenance table

Maintenance action Recommended interval Remarks

Performing an internal adjustment

Performing routine tests (sensitivity test, repeatability test).

METTLER TOLEDO recommends to perform at least a sensitivity test.

Cleaning Depending on the degree of pollution or your

4.2 Performing routine tests

There are several routine tests. Depending on your internal regulations, specific routine test must be performed by the user.

METTLER TOLEDO recommend to perform an sensitivity test after cleaning and reassembling the balance.

For full information, always consult and download the Reference Manual (RM).

• Daily

• After cleaning

• After leveling

• After changing the location

• After cleaning

internal regulations (SOP), clean the instrument:

• After every use

• After change of sample

see chapter "Adjustment with internal weight"

see below

see chapter "Cleaning the

balance"

u www.mt.com/me-RM

4.3 Cleaning

WARNING

Death or serious injury due to electric shock

Contact with parts carrying a live current can lead to injury and death. 1 Disconnect the instrument from the power supply prior to cleaning and maintenance. 2 Prevent liquid from entering the instrument, terminal or AC/DC adapter.

4.3.1 Cleaning the glass draft shield

CAUTION

Injury due to breaking glass

Careless handling with the glass components can lead to breakage off glass and damage cuttings.

− Always proceed focused and with care.

Removing or inserting sliding glass doors

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

Maintenance22 Precision and Analytical Balances

Page 23

Note

Front and rear glass panels cannot be removed.

1 Remove the handle first. 2 Remove the sliding glass doors. 3 Install the handle after insertion of the glass door.

4.3.2 Cleaning the balance

NOTICE

Damage due to improper cleaning

Improper cleaning can damage the weighing cell or other essential parts. 1 Do not use any cleaning agents other than the ones specified in the Reference Manual or

Cleaning Guide.

2 Do not spray or pour liquids on the instrument. Always use a moistened lint-free cloth or a

tissue.

3 Always wipe out from inside to outside of the instrument.

Protective equipment:

• Gloves

• Goggles

The following procedures describe the cleaning of the weighing pan and all components.

Around the balance

− Remove any dirt or dust around the balance and avoid further contaminations.

Cleaning the balance

1 Use a lint-free cloth moistened with a mild cleaning agent to clean the surface of the balance. 2 Remove powder or dust at first with a disposable tissue. 3 Remove sticky substances with a damp lint-free cloth and a mild solvent, e.g., isopropanol or ethanol 70%.

Cleaning all removable parts

− Clean all removed part with a damp cloth or a tissue and a mild cleaning agent or clean them in a dishwasher up to 80 °C.

Note

Useful details to avoid soiling are described in the METTLER TOLEDO "SOP for Cleaning a Balance".

4.3.3 Putting into operation after cleaning

1 Reassemble the balance. 2 Check the functionality of the draft shield. 3 Press 4 Warm up the balance. Wait 1h for the acclimatization, before starting the tests. 5 Check the level status, level the balance if necessary. 6 Perform an internal adjustment.

to switch on the balance.

Maintenance 23Precision and Analytical Balances

Page 24

7 Perform a routine test due to the internal regulations of your company. METTLER TOLEDO recommends to

perform an repeatability test after cleaning the balance. 8 Press ð The balance has been putting into operation and is ready to use.

5 Troubleshooting

Possible causes for faults and fault correction tasks are described in the following chapters. If there are faults that cannot be corrected through the instructions below, contact the METTLER TOLEDO.

5.1 Error messages

Error message Possible cause Diagnostic Remedy

NO STABILTY

WRONG ADJUSTMENT WEIGHT

REFERENCE TOO SMALL

EEPROM ERROR - PLEASE CONTACT CUSTOMER SERVICE

WRONG CELL DATA PLEASE CONTACT CUSTOMER SERVICE

NO STANDARD ADJUSTMENT - PLEASE CONTACT CUSTOMER SERVICE

PROGRAM MEMORY DEFECT - PLEASE CONTACT CUSTOMER SERVICE

Vibrations at the workplace.

Draft due to untight draft shield and /or open window.

The location is not suitable for weighing.

Something is touching the weighing pan.

Wrong adjustment weight. Check weight. Place correct weight on the

Reference for piece counting too small.

Data in EEPROM damaged.

Defect load cell data. – Please contact your

– – Please contact your

Place beaker with tap water on the weighing table. Vibrations cause ripples on the water surface.

• Protect weighing

location against vibrations (vibration absorber, etc.).

• Set weighing

parameters coarser (change ENVIRON. from STABLE to

STANDARD or even UNSTABLE.

• Find a different

weighing location (by agreement with customer).

Make sure draft shield or window is closed.

• Close draft shield or

window.

• Set weighing

parameters coarser (change ENVIRON. from STABLE to

STANDARD or even UNSTABLE.

– Check and observe the

requirements for the location, refer to the "Selecting the location" chapter.

Check for touching parts or dirts.

Remove touching parts or clean the balance.

weighing pan.

– Increase reference weight.

– Please contact your

METTLER TOLEDO-Support representative.

Troubleshooting 25Precision and Analytical Balances

Page 26

Error message Possible cause Diagnostic Remedy

TEMP SENSOR DEFECT PLEASE CONTACT CUSTOMER SERVICE

WRONG LOAD CELL BRAND - PLEASE CONTACT CUSTOMER SERVICE

WRONG TYPE DATA SET PLEASE CONTACT CUSTOMER SERVICE

Battery backup lost

ABOVE INITIAL ZERO RANGE

BELOW INITIAL ZERO RANGE

MEM FULL

FACTOR OUT OF RANGE

STEP OUT OF RANGE

OUT OF RANGE

Temperature sensor of load cell defect.

Wrong load cell installed. – Please contact your

Wrong type data set. – Please contact your

Backup battery is empty. This battery ensures that the date and time are not lost when the balance is disconnected from power.

Wrong weighing pan.

Pan is not empty.

Wrong weighing pan.

Pan is missing.

Memory full. – Clear the memory by

Factor is outside the allow range.

Step is outside the allow range.

Sample weight is outside the allow range.

– Please contact your

Connect the balance to the power supply for charging the battery (full capacity after 2 days of charging).

Check weighing pan. Mount correct weighing

– Select a new factor.

– Select a new step.

– Unload the pan and load a

METTLER TOLEDO-Support representative.

Battery must be recharged. Please contact METTLER TOLEDO-Support representative.

pan or unload weighing pan.

pan.

finishing all applications where a measurement is ongoing.

new sample weight.

5.2 Error symptoms

Error symptoms Possible cause Diagnostic Remedy

Display is dark Instrument is switched off. – Switch on the instrument.

Power plug not connected. Check Connect power cable to

Power supply not connected to balance.

Power supply is faulty. Check/test Replace power supply.

Wrong power supply. Check that input data on

Connector socket on balance is corroded or faulty.

Display is faulty. Replace display. Please contact your

Operation Keys do not work

Troubleshooting26 Precision and Analytical Balances

Keypad is defect. Replace the keypad. Please contact your

Check Connect power supply.

type plate match the power supply values.

Check Please contact your

power supply.

Use proper power supply.

METTLER TOLEDO-Support representative.

Page 27

Error symptoms Possible cause Diagnostic Remedy

The value drifts into plus or minus

Room, environment not suitable.

–

Environmental recommendations

• Windowless, non air-

conditioned room, e.g., basement.

• Only one person in the

weighing room.

• Sliding doors.

Standard doors cause pressure changes.

• No draft in weighing

room (check with suspended threads).

• No air conditioning

(temperature oscillates, draft).

• Acclimatize balance,

take dummy measurements.

• Instrument uninter-

ruptedly connected to the power supply (24h per day).

Direct sunlight or other heat source.

Is any sun shade (blinds, curtains, etc.) available?

Select location according to chapter "Selecting the location" (customer responsibility).

Weighing sample absorbs moisture or evaporates moisture.

• Is the weighing result

with a test weight stable?

• Sensitive weighing

• Use aids.

• Cover weighing

sample.

samples e.g. paper, cardboard, wood, plastic, rubber, liquids.

Weighing sample is electrostatically charged.

• Is the weighing result

with a test weight stable?

• Sensitive weighing

• Increase air humidity

in weighing chamber (45% - 50%).

• Use ionizer.

samples e.g. plastic, powder, insulating materials.

The value drifts into plus or minus

(Continuation)

Weighing sample is hotter or colder than the air in the weighing chamber.

Instrument has not yet reached thermal equilibrium.

Weighing operation with test weight does not show this effect.

• Was there a power

outage?

• Was power supply

disconnected?

Bring weighing sample to room temperature before weighing.

• Acclimatize instrument

for at least 1 hour. Depending on climatic conditions, extend this period accordingly.

• Instrument switched on

for at least 1 hour, refer to the "General data" chapter.

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Error symptoms Possible cause Diagnostic Remedy

Display shows overload or underload

The weight on the weighing pan exceeds the

Check weight. Reduce the weight on the

weighing pan. weighing capacity of the instrument.

Wrong weighing pan. Slightly lift or press

Use proper weighing pan.

weighing pan. The weight display appears.

No weighing pan. – Install weighing pan.

Incorrect zero point at switch-on.

– • Switch off balance.

• Disconnect and

reconnect power cable.

Display flashes 0.0000 Loose cables. Check all cable

connections.

Connect all cables.

Please contact your

METTLER TOLEDO-Support

representative if the

problem persists.

Taring not possible Vibrations at the

workplace.

Display unstable. Press Tare again.

Place beaker with tap water on the weighing table. Vibrations cause ripples on the water surface.

• Protect weighing

location against vibrations (vibration absorber, etc.).

• Set weighing

parameters coarser (change ENVIRON. from STABLE to

STANDARD or even UNSTABLE.

• Find a different

weighing location (by agreement with customer).

5.3 Status messages/Status icons

Status messages are displayed by means of small icons. The status icons indicate the following:

Icon Status description Diagnostic Remedy

Service due.

See menu topic SERV.ICON in chapter "Description of menu

Please contact your METTLER TOLEDO-Support representative.

topic" -> "Advanced menu".

5.4 Putting into operation after correction of fault

After correcting the fault, perform the following steps to put the balance into operation:

• Ensure that the balance is completely reassemble and cleaned.

• Reconnect the balance to the power supply.

Troubleshooting28 Precision and Analytical Balances

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6 Technical Data

6.1 General data

Standard power supply

AC/DC adapter: Primary: 100 - 240 V~ 0.5 A, 50 – 60 Hz

Balance power consumption: 12 V DC, 0.3 A

Optional power supply

AC/DC adapter: Primary: 100 - 240 V~ 0.8 A, 50 – 60 Hz 60 - 80 VA

Cable for AC/DC adapter: 3-core, with country-specific plug

Polarity:

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: Up to 2000 m (Standard power supply)

Height above mean sea level: Up to 4000 m (Optional power supply)

Ambient temperature: 5 - 40 °C

Storage condition: -25 to 70 °C

Relative air humidity: Max. 80% up to 31°C, linearly decreasing to 50% at 40°C,

Warm-up time:

Secondary: 12 V 1 A MAX 23 - 34 VA LPS

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

Secondary: 12 V DC, 2.5 A LPS (with electronic overload protection)

with a current limited SELV (Safety Extra Low Voltage)

output

noncondensing

At least 30 minutes (0.1 mg models 60 minutes) after connecting the balance to the power supply

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Materials

Housing: Top housing: Plastic (ABS)

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

Draft shield element: 0.1 mg models: Stainless steel X5CrNi 18-10 (1.4301)

Draft shield: Plastic (ABS), glass

Protective cover: Plastic (PET)

Bottom housing: Die-cast aluminum, lacquered

All others: Stainless steel X5CrNi 18-10 (1.4301)

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7 Disposal

In conformance with the European Directive 2012/19/EU 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, the content of this regulation must also be related.

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Mettler-Toledo GmbH

30348473

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

www.mt.com/balances

For more information