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User Manual
Jewelry Balances
JET
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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/jet-RM
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Overview balance
10
1
2
3
3
3
1
2
1
2
7
7
7
9
5
6
5
4
4
5
6
11
13
14
12
8
8
0.1 mg
1 mg
10 mg~0.1 g
Touch screen (Capacitive color TFT)
1
Operating keys
2
Leveling foot
3
Handle for operation of the draft shield door
4
Weighing pan
5
Draft shield element
6
Level indicator
7
Glass draft shield
8
USB host port
9
USB device port
10
RS232 serial interface
11
Socket for AC/DC adapter
12
Kensington slot for anti-theft purposes
13
Legal for Trade sealing
14
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Overview operation keys
1 2 3 4 5
No. Key Name Description
1
ON/OFF Switches the balance on or off.
2
3
4
5
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.
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Table of Contents
1 Introduction 3
1.1 Further documents and information.................................................................... 3
1.2 Compliance information ................................................................................... 3
1.3 Abbreviations .................................................................................................. 3
2 Safety Information 4
2.1 Definitions of signal warnings and warning symbols ........................................... 4
2.2 Product specific safety notes ............................................................................. 4
3 Design and Function 5
3.1 Overview ........................................................................................................ 5
3.2 User Interface .................................................................................................. 5
3.2.1 Main settings and activities at a glance ............................................... 6
3.2.2 Application home screen.................................................................... 7
3.2.3 Entering characters and numbers........................................................ 8
3.2.4 Touch screen navigation.................................................................... 8
4 Installation and Putting into Operation 10
4.1 Selecting the location ....................................................................................... 10
4.2 Unpacking the balance..................................................................................... 10
4.3 Scope of delivery ............................................................................................. 11
4.4 Assembling the balance ................................................................................... 11
4.5 Putting into operation ....................................................................................... 12
4.5.1 Connecting the balance ..................................................................... 12
4.5.2 Switching on the balance................................................................... 13
4.5.3 Changing the date and time ............................................................... 13
4.5.4 Leveling the balance.......................................................................... 14
4.5.5 Adjusting the balance ........................................................................ 14
4.6 Performing a simple weighing........................................................................... 15
4.6.1 Weighing ......................................................................................... 15
4.6.2 Changing the readability .................................................................... 16
4.6.3 Switching weight units....................................................................... 16
4.7 Transporting, packaging and storage ................................................................. 17
4.7.1 Transporting over short distances........................................................ 17
4.7.2 Transporting over long distances ........................................................ 17
4.7.3 Packaging and storage...................................................................... 18
5 Maintenance 18
5.1 Maintenance tasks........................................................................................... 18
5.2 Cleaning......................................................................................................... 18
5.2.1 Cleaning the balance......................................................................... 18
5.2.2 Cleaning the draft shield (0.1mg and 1mg models)............................ 19
5.2.3 Putting into operation after cleaning .................................................... 19
6 Technical Data 20
6.1 General data ................................................................................................... 20
7 Disposal 20
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1 Introduction
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.
1.1 Further documents and information
This document is available in other languages online.
Search for software downloads u www.mt.com/labweighing-software-download
Search for documents u www.mt.com/library
For further questions, please contact your authorized METTLER TOLEDO dealer or service representative.
1.2 Compliance information
European Union
The instrument complies with the directives and standards listed on the EU Declaration of Conformity.
United States of America
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
The FCC Supplier Declaration of Conformity is available online.
u http://www.mt.com/ComplianceSearch
u www.mt.com/EULA
u www.mt.com/jet-RM
u www.mt.com/jewelry
u www.mt.com/contact
1.3 Abbreviations
English term Translated
term
EMC Electromagnetic Compatibility
FACT Fully Automated Calibration Technology
FCC Federal Communications Commission
GMP Good Manufacturing Practice
ID Identification
LPS Limited Power Source
RM Reference Manual
RS (RS232) Recommended Standard (RS232)
SELV Safety Extra Low Voltage
UM User Manual
USB Universal Serial Bus
USP United States Pharmacopeia
Explanation
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2 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.
2.1 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
DANGER
WARNING
CAUTION
NOTICE
Warning symbols
General hazard: read the User Manual or the Reference Manual for information about the hazards
and the resulting measures.
Electrical shock Notice
A hazardous situation with high risk, resulting in death or severe injury if not avoided.
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.
2.2 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.
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.
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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 METTLER TOLEDO power supply cable and AC/DC adapter designed for your
instrument.
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
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.
A listing of all parts can be found in the Reference Manual (RM).
3 Design and Function
3.1 Overview
See also
2 Overview balance}Page4
3.2 User Interface
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.
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3.2.1 Main settings and activities at a glance
Application main configuration
Balance information
General settings
Activities
Depending on the application, the options available to be selected and their content may differ.
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3.2.2 Application home screen
3
4
1
2
13
14
9
7
12
6
10
11
5
8
15
Prepare weight and start
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
Information and work bars
Name Description
Weighing information bar Displays the weighing-in aid and general balance information.
1
Work title bar Displays information about the current activity.
2
Value bar Displays information about the current weighing process.
3
Main navigation Work-related functions.
4
Information fields
Name Description
Weighing-in aid A dynamic graphic indicator displays how much of the total weighing
5
Short balance information Readability and capacity of the balance.*
6
Weighing value field Displays the value of the current weighing process (model-specific).
7
Coach text field Displays instructions for the current weighing process.
8
in the lower right corner of the screen.
range is in use.
* For legal-for-trade approved balances: Min (minimum capacity) and e (verification of scale interval) are
shown in the upper left corner.
Action buttons
Name Description
Activity configuration
9
Balance information Displays detailed technical data about the balance.
10
Weighing unit Displays the unit of the current weighing process (model- and country-
11
Activities Opens the activities selection.
12
Print Prints out or transfers results and/or settings (printer required).
13
Settings Configures balance and user settings/preferences (application
14
Status information field Displays information about the system status.
15
To configure the current application, e.g., Weighing.
specific).
independent).
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3.2.3 Entering characters and numbers
7
4
3
6
1
8
2
5
ID 1 - Label
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 (e.g. the ID can be scanned via barcode reader to ensure that the
sample is clearly assigned to the corresponding product). Additionally, it is possible to connect a USB keyboard
to enter the information.
Name Description
Input field Displays all characters that have been entered.
1
Delete all Deletes all entered characters.
2
Discard Discards the entered data and exits the dialog.
3
Delete Deletes the last character.
4
Confirm Confirms the data entered.
5
Shift Switches between lower and upper case letters.
6
Specialized tabs Switches keyboard mode for entering letters, numbers or special characters.
7
Explanation field Extra information about the value to be entered.
8
3.2.4 Touch screen navigation
To interact with the balance, use the screen and the operating keys at the bottom of the screen.
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Opening an application
Activities
Weighing applications
Counting
Check
weighing
Totaling
Density
Weighing
Due to its size, the display does not show all available applications at once. Scroll the applications by swiping
the touchscreen horizontally.
To open settings or applications, tap the application symbol, e.g.,
Weighing.
Using Shortcuts
To simplify navigation on the 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.
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4 Installation and Putting into Operation
WARNING
Risk of death or serious injury due to electric shock
The instrument must be disconnected from the power supply before performing all setup and
assembly work.
4.1 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
Place indoors on stable
table
Ensure sufficient spacing Level the instrument Provide adequate lighting
Avoid direct sunlight Avoid vibrations Avoid strong drafts Avoid temperature fluctu-
Sufficient distance for balance > 15 cm next to the instrument.
Take into account the environmental conditions. See "Technical Data."
ations
4.2 Unpacking the balance
Check the package, the packaging elements and the delivered components for damages. If any components are
damaged, please contact your METTLER TOLEDO service representative.
Retain all parts of the packaging. This packaging offers the best possible protection for transporting the balance.
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4.3 Scope of delivery
1
2
Components Model
0.1 mg 1 mg 10 mg / 100mg
Draft shield 170 mm –
Draft shield element –
Weighing pan with pan support ø 90 mm – –
ø 120 mm – –
180 × 180 mm – –
Pan support – –
Carat pan S 80 ø × 20 mm – –
M 90 ø × 30 mm – –
L 90 ø × 45 mm – –
Protective cover
Universal AC/DC adapter
User Manual
Declaration of conformity
4.4 Assembling the balance
CAUTION
Injury due to sharp objects or broken glass
Instrument components, e.g., glass, can break and lead to injuries.
− Always proceed with focus and care.
Balances with a 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 a readability of 1 mg
Place the following components on the balance in the specified order:
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1
1 Push the side glass doors back as far as they will go.
3
2
1
4
2 Insert the weighing pan (1).
Balances with a readability of 10 mg / 100mg
Place the following components on the balance in the specified order:
1 Place the draft shield element (2).
2 Carefully pull apart the draft shield element to fix it under
the retaining plate (1).
3 Place the pan support (3).
4 Place the weighing pan (4).
4.5 Putting into operation
4.5.1 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
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
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 a universal AC/DC adapter or an AC/DC adapter with a country-specific power
cable.
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1
2
1 Install the cables so that they cannot be damaged and do
Time
not interfere with the operation.
2 Insert the power cable in a grounded power outlet that is
easily accessible.
3 Connect the AC/DC adapter (1) to the connection socket on
the back of your balance.
4 Connect the power cable (2) to the power socket.
5 Screw the plug into the balance if applicable.
Note
Always connect the AC/DC adapter to the balance before connecting to the power.
Do not connect the instrument to a power outlet controlled by a switch. After switching on the instrument, it must
warm up before giving accurate results.
4.5.2 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 0.1mg
models).
The balance is connected to the power supply.
§
The balance is warmed up.
§
− Press
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 start with the screen of the application last used before switching it
off.
.
ð After the start screen has disappeared, the application home screen will open.
4.5.3 Changing the date and time
Navigation:
The dialog (Picker view) allows the user to set the date and time.
Tap
> General configuration > System settings > Date and Time
for Time and 25 for Date. The format can be selected by tapping .
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Name Description
Change date/time format Various date/time formats can be selected.
1
Pick button Increment.
2
Picker field Displays the defined time/date.
3
Pick button Decrement.
4
Selection tabs Tabs of the selectable sub-categories.
5
4.5.4 Leveling the balance
Exact horizontal and stable positioning are essential for repeatable and accurate weighing results.
Leveling intervals
Check and - if necessary - adjust the bubble level:
• when the balance is used for the first time.
• after moving the balance to a new location.
• at regular intervals.
Leveling procedure
The balances are leveled manually by turning the leveling feet at the bottom of the housing.
1 Position the balance at the selected location.
2 Align the balance horizontally.
3 Turn the two front leveling feet of the housing until the air
bubble is in the middle of the glass.
Example
Air bubble at 12
turn both feet clockwise.
o'clock:
Air bubble at 3
o'clock:
Air bubble at 6
turn left foot clockwise, right foot counterclockwise.
turn both feet counterclockwise.
o'clock:
Air bubble at 9
o'clock:
turn left foot counterclockwise, right foot
clockwise.
4.5.5 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.
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• 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 further information, consult the Reference Manual (RM).
u www.mt.com/jet-RM
4.6 Performing a simple weighing
Navigation:
4.6.1 Weighing
Zeroing
Use the
1 Unload the balance.
2 Press
ð All weight values are measured in relation to this zero point.
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 values.
Weighing
− 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
Print / transmit data
The balance can send data to a printer or a PC. Press the
the interface. The procedure for activating and configuring a printer is described in "Publishing" and "Devices".
Printer is connected to the balance.
§
Printer is switched on.
§
Printer is activated and configured.
§
− Tap
ð The data are transmitted.
Switching off
1 Press and hold
2 Tap
ð The balance switches off and enters standby mode.
• After switching on from standby mode, the balance does not need to warm up. It is immediately ready to start
weighing.
• If the balance has been switched off manually, the display will also be off.
To switch off the balance fully, it must be disconnected from the power supply.
> Activities - Weighing applications > Weighing
zeroing key before starting to weigh anything.
to zero the balance.
to tare the balance.
key is pressed again or the balance is switched off.
key to transmit the weighing results or settings via
.
until the dialog Switch-off appears.
to confirm.
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4.6.2 Changing the readability
Readability
g (Default)
Changing the readability
There are several readabilities available. The default readability (d) is model-specific.
1 Tap the weighing value.
2 Select the desired readability.
3 Confirm the selected readability by tapping
.
ð The readability has now been changed.
4.6.3 Switching weight units
Switching weight units
There are several weighing units available. The default value is country-specific.
The weighing unit can be selected using the activity configuration or via shortcut. This example describes how to
change the weighing unit via shortcut.
Note
With legal-for-trade approved balances, the menu topic has a fixed setting and cannot be changed.
1 Tap the weighing unit.
ð The screen Main unit appears.
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Main unit
g (Default)
2 Select the desired weighing unit by tapping it.
3 Tap
ð The weighing unit has now been changed.
to confirm.
4.7 Transporting, packaging and storage
Preparing the balance for transport
CAUTION
Injury due to sharp objects or broken glass
Instrument components, e.g., glass, can break and lead to injuries.
− Always proceed with focus and care.
1 Press and hold the key.
2 Disconnect the balance from the power supply.
3 Disconnect all interface cables.
4.7.1 Transporting over short distances
To move the balance over a short distance to a new location, follow the instructions below.
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.
1 Hold the balance with both hands as shown.
2 Carefully lift the balance and carry the balance in horizontal
position to the new location.
4.7.2 Transporting over long distances
To transport the balance over long distances, always use the original packaging.
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4.7.3 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 "Technical data".
• When storing for longer than six months, the rechargeable battery maybe down (date and time get lost).
5 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.
For further information, consult the Reference Manual (RM).
u www.mt.com/jet-RM
5.1 Maintenance tasks
Maintenance action Recommended interval Remarks
Performing an internal
adjustment
Cleaning • After every use
• Daily
• After cleaning
• After leveling
• After changing the location
• After changing the substance
• Depending on the degree of pollution
• Depending on your internal regulations (SOP)
see "Activities - Adjustments and
tests"
see "Cleaning"
5.2 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.
5.2.1 Cleaning the balance
NOTICE
Damage due to improper cleaning
Improper cleaning can damage the load 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.
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The appropriate maintenance interval depends on your standard operating procedure (SOP).
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.
Cleaning all removable parts
− Clean all removed part with a damp cloth or a tissue and a mild cleaning agent.
Note
Useful details to avoid soiling are described in the METTLER TOLEDO "SOP for Cleaning a Balance".
5.2.2 Cleaning the draft shield (0.1mg and 1mg 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.
5.2.3 Putting into operation after cleaning
1 Reassemble the balance.
2 If applicable: Check smooth movement of the draft shield.
3 Press
4 Warm up the balance. Wait 1h for the acclimatization, before starting the tests.
5 Check the level and level the balance if necessary.
6 Perform an internal adjustment.
7 Perform a routine test according to the internal regulations of your company. METTLER TOLEDO recommends
8 Press
ð The balance has been put into operation and is ready to use.
to switch on the balance.
to perform a repeatability test after cleaning the balance.
to zero the balance.
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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
Secondary: 12 V 1.0 A MAX 24 – 34 VA LPS, SELV
Balance power consumption: 12 V DC, 0.84 A
Polarity:
Mean see level: Can be used up to 2000 m above mean sea level
If the balance is used above 2000 m mean sea level, the power
supply for 0.1 mg models must be used
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 (up to 2000 or 4000 m)
Ambient temperature: Operating conditions for ordinary lab application: +10 to 30°C
Relative air humidity: Max. 80% up to 31°C, linearly decreasing to 50% at 40°C,
Warm-up time: At least 30 minutes (60 minutes for 0.1 mg models) after
Materials
Housing: Top Housing: Plastic (ABS)
Weighing pan: Pan ø 90 mm: Stainless steel X2CrNiMo 17-12-2 (1.4404)
Draft shield element: 0.1mg models: Stainless steel X2CrNiMo 17-12-2 (1.4404)
Draft shield: Plastic (ABS), glass
Protective cover: Plastic (PET)
TFT touch screen surface: Glass
(operability guaranteed between +5 and 40°C)
noncondensing
connecting the balance to the power supply. When switched on
from standby, the instrument is ready for operation immediately.
Bottom housing: Die-cast aluminum, powder coated
All others: Stainless steel X5CrNi 18-10 (1.4301)
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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Page 28
Mettler-Toledo GmbH
30491788
Im Langacher 44
8606 Greifensee, Switzerland
www.mt.com/contact
Subject to technical changes.
© Mettler-Toledo GmbH 06/2019
30491788Aen
www.mt.com/jewelry
For more information
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