Jewelry Balances - Mettler Toledo · Installation and Putting into Operation12 Jewelry Balances....

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Jewelry BalancesJP/JS

User

Man

ual

30348492C 3/13/2017 7:03 AM - Schema ST4 PDF engine - Layout by Victor Mahler

Jew

elry

Bal

ance

s

Overview components

0.001 ct 0.001 g

0.01 g 0.1 g

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6

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1 Display 2 Operation keys

3 Draft shield ring / element 4 Weighing pan

5 Handle for operation of the draft shield door 6 Glass draft shield

7 Model sticker (with approved models only) 8 Level indicator

9 Leveling foot 10 Product label

11 Second RS232C serial interface COM2 (JPmodels only)

12 Kensington slot for anti-theft purposes

13 RS232C serial interface COM1 14 Socket for AC/DC adapter

Overview components 3Jewelry Balances

Overview operation keys

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51 4 963 7 82

Legend key functions

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

1 • To change display resolution (1/10dfunction) while application is running

• Important: not available with approvedmodels in selected countries

no function

2 • To navigate back (scroll up) withinmenu topics or menu selections

• Decrease (numerical) parameters withinmenu and in applications

• To select the weighing application• Decrease (numerical) parameters

quickly within menu and in applications

3 • To navigate forward (scroll down)within menu topics or menu selections

• Increase (numerical) parameters withinmenu and in applications

• To select assigned application andentering the parameter settings of appli-cation.

• Default application assignment: Piececounting

• Increase (numerical) parameters quicklywithin menu and in applications

4 ON//OFF • Switch on • Switch off

5 • Zero • Switch off

6 • Cancel and to leave menu withoutsaving (one step back in the menu)

no function

7 • With entries: scroll down• To navigate through 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)

• Execute predefined adjusting(calibration) procedure

8 • To enter or leave menu selection (from /to menu topic)

• To enter application parameter or switchto next parameter

• To confirm parameter

• Enter or leave menu (parametersettings)

• Save parameters

Overview operation keys4 Jewelry Balances

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

9 • Printout display value• Printout active user menu settings• Transfer data

Overview operation keys 5Jewelry Balances

1 Safety Information• Read and understand the instructions in this manual before you use the balance.• Keep this manual for future reference.• Include this manual if you pass on the balance to other parties.If the balance is not used according to the instructions in this manual or if it is modified, the safety of theuser may be impaired and Mettler-Toledo GmbH assumes no liability.

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

1.1 Definition of signal warnings and symbolsSafety 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 falseresults.

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

CAUTION for a hazardous situation with low risk, resulting in minor or moderate injury if notavoided.

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

General hazard: readthe OperatingInstructions for infor-mation about thehazards and theresulting measures.

Electrical shock

1.2 Product safety informationThe balance has been tested for the experiments and intended purposes documented in the appropriatemanual of the balance. However, this does not absolve you from the responsibility of performing your owntests of the products supplied by us regarding their suitability for the methods and purposes you intend touse them for.

Intended useThis balance is designed to be used in analytical laboratories by qualified staff. The balance is intended forweighing.

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

Responsibilities of the balance ownerThe balance owner is the person that uses the balance for commercial use or places the balance at thedisposal of his staff. The balance owner is responsible for product safety and the safety of staff, user(s) andthird party.

We assume that the balance owner provides the necessary protective gear, appropriate training for the dailywork and for dealing with potential hazards in their laboratory.

Safety Information6 Jewelry Balances

Safety notes

WARNINGRisk of electric shockContact 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 the power plug for damage and replace damaged cables and power

plugs.

NOTICERisk of damage to the balance due to incorrect partsUsing incorrect parts with the balance can damage the balance or cause the balance tomalfunction.− Only use parts supplied with the balance, listed accessories and spare parts from Mettler-

Toledo GmbH.

NOTICERisk of damage to the balance or softwareIn some countries, excessive mains voltage fluctuations and strong glitches may occur. Thismay affect the balance functions or damage the software.− Use a voltage regulator for stabilizing.

Safety Information 7Jewelry Balances

2 Design and Function

2.1 Display

Application Icons Status IconsW

eighin

g-in a

id

Weight Value Field Unit Field

Application icons

Menu locked Application statistics

Menu setting activated Application totaling

Application weighing Application multiplication factor

Application piece counting Application division factor

Application percent weighing Application density

Application check weighing

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

Status icons

Indicates stored value (Memory) Acoustic feedback for pressed keysactivated

Adjustments (calibration) started Weighing range 1 (Dual Range modelsonly)

FACT activated Weighing range 2 (Dual Range modelsonly)

Applications diagnostics and routine test Charge of battery: full, 2/3, 1/3,discharged (Battery operated models only)

Service reminder

Weight value field and weighing-in aid

Indicates negative values Brackets to indicate uncertified digits(approved models only)

Indicates unstable values Marking of nominal or target weight

Indicates calculated values Marking of tolerance limit T+

Marking of tolerance limit T-

Design and Function8 Jewelry Balances

Unit field

g gram ozt troy ounce tls Singapore taels

kg kilogram GN grain tlt Taiwan taels

mg milligram dwt pennyweight tola tola

ct carat mom momme baht baht

lb pound msg mesghal

oz ounce tlh Hong Kong taels

Design and Function 9Jewelry Balances

3 Installation and Putting into OperationFinding more information

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

u www.mt.com/jewelry

WARNINGRisk of electric shockThe balance must be disconnected from the power supply when carrying out all setup andmounting work.

3.1 Unpacking and delivery inspection

NOTICERisk of damage to the balance due to incorrect partsUsing incorrect parts with the balance can damage the balance or cause the balance tomalfunction.− Only use parts supplied with the balance, listed accessories and spare parts from Mettler-

Toledo GmbH.

1 Open the packaging and carefully remove all components.2 Check the delivered items.

The standard scope of delivery contains the following items:

Components Carat balances Gold balances

0.001 ct 0.001 g 0.01 g 0.1 g

Draft shield 165 mm – –

Weighing pan ø 90 mm – – –

ø 120 mm – – –

170 × 190 mm – –

Draft shield ring – – –

Draft shield element – – –

Pan support

Bottom plate – –

Protective cover

Universal AC/DC adapter (with plug set)

Carat pan S 80 ø × 20 mm – – –

EC declaration of conformity

Operating instructions or User Manual; printedor on CD-ROM, depending on country of use

Installation and Putting into Operation10 Jewelry Balances

http://www.mt.com/jewelry

3.2 Selecting a locationAn optimal location will ensure accurate and reliable operation of the balance. The surface must be able tosafely take the weight of the balance when fully loaded. The following local conditions must be observed:

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

• Operate the balance only indoors and at an altitude of less than 4000 m above sea level.• Before switching on the balance, allow all its parts to reach room temperature (+5 to 40 °C).

Make sure that the relative humidity is between 10% and 80% and non-condensing conditions are met.• The power plug must be easily accessible.• Firm, horizontal location as free from vibrations as

possible.• Avoid direct sunlight.• No excessive temperature fluctuations.• No powerful drafts.• Surroundings as free from dust as possible.

3.3 Installing componentsCarat balances with readability of 0.001 ct1 Place the following components on the balance in the specified order:

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52 Push the side glass door (1) back as far as will go.• Bottom plate (2)• Draft shield element (3)• Pan support (4)• Weighing pan (5)

Installation and Putting into Operation 11Jewelry Balances

Gold balances with readability of 0.001 g1 Place the following components on the balance in the specified order:

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2 Push the side glass door (1) back as far as will go.• Bottom plate (2)• Pan support (3) if present• Weighing pan (4)

Gold balances with readability of 0.01g

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1 Remove the two screws (1).2 Remove the plate (2) and retain it.3 Place draft shield element (3) and fix it with the two

screws (1).4 Place pan support (4) with weighing pan (5).

Gold balances with readability of 0.1 g− Place the following components on the balance in the specified order:

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• Pan support (1)• Weighing pan (2)


3.4 Connecting the balance

WARNINGRisk of electric shockContact 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 the power plug for damage and replace damaged cables and power

plugs.

NOTICERisk to the AC/DC adapter due to overheatingIf the AC/DC adapter is covered or in a container, it is not sufficiently cooled and overheats.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.

Important• Install the cables in such a way that they cannot be damaged or interfere with operation.• Insert the plug of the power cable in a grounded 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 thepower line.

ð The balance is ready for use.

3.4.1 Battery operationThe balance can also operate with batteries. Under normal operation conditions, the balance works indepen-dently of the AC power line for about 8 to 15 hours (using alkaline batteries).

Note: It is also possible to use rechargeable batteries. Charging batteries inside the balance is not possible.

Inserting / replacing batteriesYour balance uses 8 standard AA (LR6) batteries (alkaline batteries preferred).

Important• Do not place the balance on the pan support location bolt.• Battery warnings: read and follow all warnings and instructions supplied by the battery manufacturer.• Do not mix different types or brands of batteries. Performance of batteries can vary very greatly

depending on the manufacturer.• If you don't operate the balance with batteries for an extended period, it is recommended to remove the

batteries from the balance.• Batteries must be disposed of in an environmentally responsible manner. No attempt must be made to

incinerate or disassemble item.


§ Make sure that the balance is off before removing or inserting batteries.

1 Remove weighing pan, pan support and draft shield element or draft shield "100 mm" if present.2 Turn the balance carefully on its side.3 Open and remove the battery-chamber cover.

4 Insert / replace the batteries with the correct polarity asshown in the battery holder.

5 Insert and close the battery-chamber cover.6 Turn the balance carefully to its normal position.7 Reinstall all components in the reverse order.

3.5 Setting up the balance

3.5.1 Switching on the balanceBefore working with the balance, it must be warmed up in order to obtain accurate weighing results. Toreach operating temperature, the balance must be connected to the power supply for at least 30 minutes(0.1 mg models 60 minutes).

Switching on

OnOff

0.00 g

− Press On.ð The balance performs a display test. All segments

in the display light up briefly, WELCOME andsoftware version. Maximum load and readabilityappears briefly. (Startup FULL mode only).

ð The balance is ready for weighing or for operation withthe last active application.

3.5.2 Leveling the balanceThe balances have a level indicator and two or four adjustable leveling feet to compensate for slight irregu-larities in the surface of the weighing bench. The balance is exactly horizontal when the air bubble is in themiddle of the level glass.

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

Balances with 2 leveling feetTo level it, proceed as follows:

1 Position your balance at the selected location.2 Align the balance horizontally.


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3 Turning the two front leveling screws of the housinguntil the air bubble is in the inner circle of the levelindicator.

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.

Balances with 4 leveling feet1 Turning the two rear leveling feet all the way in.2 Adjust the two front leveling feet as previously described.3 Turning the rear leveling feet down onto the surface for extra stabilizing safety, so the balance cannot tilt

over under eccentric loads.

3.5.3 Adjusting the balanceTo obtain accurate weighing results, the balance must be adjusted to match the gravitational acceleration atits location and depending on the ambient conditions. After reaching the operation temperature, adjusting isnecessary.

• before the balance is used for the first time.• when the balance was disconnected from the power or switched off in battery operation or in case of

power failure.• after a change of the location.• at regular intervals during weighing service.

3.6 Adjustment (calibration)

NOTICEBefore adjusting the balance, it must be warmed up.

3.6.1 Fully automatic adjustment FACT

NoteOn models with FACT only.

The factory setting is fully automatic adjustment FACT (Fully Automatic Calibration Technology) with theinternal weight.

The balance adjusts itself automatically:

• after the warm-up phase on connection to the power supply.• when a change in the ambient conditions, e.g. the temperature, could lead to a noticeable deviation in

the measurement.• on a predefined time, see menu topic FACT.• time interval. (with OIML accuracy class II approved models).


3.6.2 Manual adjustment with internal weight

§ In the menu topic CAL (Adjustment) of advanced menu ADJ.INT must be selected.

§ Weighing pan is unloaded.

------

ADJ DONE

0.00 g

ADJ.INT

− Press to execute the internal adjustment.ð The balance adjusts itself automatically.

ð The adjusting is finished when the message ADJDONE appears briefly on the display. The balancereturns to the last active application and is ready foroperation.

3.6.3 Manual adjustment with external weight

NoteWe recommend to disable FACT.

§ In the menu topic CAL (Adjustment) of advanced menu ADJ.EXT must be selected.

§ Required adjustment weight is ready.

§ Weighing pan is unloaded.

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2000.00 g

ADJ DONE

0.00 g

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0.00 g

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ADJ.EXT

1 Press briefly to execute the external adjustment.ð The required (predefined) adjustment weight value

flashes on the display.2 Place adjustment weight in center of pan.

ð The balance adjusts itself automatically.3 Remove adjustment weight, when 0.00 g flashes.ð The adjusting is finished when the message ADJ

DONE appears briefly on the display. The balancereturns to the last active application and is ready foroperation.


3.7 Performing a simple weighing

1250.38

0.00

1182.03 C

¢¢¢¢¢¢¢¢

¢¢¢¢¢¢

# 0.00

1 Press to zero the balance.Note: If your balance is not in the weighing mode,press and hold the key down until WEIGH appearsin the display. Release the key. Your balance is in theweighing mode and set to zero.

2 Place weighing sample on the weighing pan.3 Wait until the instability detector disappears and the

stability beep sounds.4 Read the result.

ZeroingUse the zeroing key before you start with a weighing.

121.01 g¢¢¢¢

# 0.01 g

0.00 g

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1 Unload the balance.2 Press to set the balance to zero.

All weight values are measured in relation to this zeropoint.

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

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121.01 g

0.00 g

0.00 g

95.97 g

#

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1 Place empty container on the weighing pan.ð The weight is displayed.

2 Press to set the balance to zero.ð 0.00 g appears in the display.

3 Place weighing sample into the weighing container.ð The result appears in the display.


Switching off

SHUTOFFOnOff

− Press and hold the Off key until SHUTOFF appears onthe display. Release the key.

ð Balances switch into standby mode.

Note• After switching on from standby mode, your balance needs no warm-up time and is immediately ready

for weighing.• Standby mode is not possible with approved balances (only available in selected countries).• If your balance has been switched off after a preselected time, the display is dimly lit and shows date,

time, maximum load and readability.• If your balance has been switched off manually, the display is off.• To completely switch off mains operated balances, they must be disconnected from the power supply.


4 Maintenance

4.1 Cleaning and service

Every now and then, clean the weighing pan, draft shield element, bottom plate, draft shield (depending onthe model) and housing of your balance. Your balance is made from high-quality, durable materials andcan therefore be cleaned using a damp cloth or with a standard cleaning agent.

To thoroughly clean the draft shield glass panels, remove the draft shield from the balance. Whenreinstalling the draft shield, ensure that it is in the correct position.

Please observe the following notes:

WARNINGRisk of electric shockContact with parts that contain 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 cable, if these need to be replaced.3 Make sure that no liquid enters into the balance, terminal or AC/DC adapter.4 Do not open the balance, terminal or AC/DC adapter.

These contain no user-serviceable parts.

NOTICERisk of damage to the balance due to inappropriate cleaning methodsThe balance is made from high quality, resistant materials and can be damaged by certaincleaning agents, solvents or abrasives. If liquids enter the housing they can damage thebalance.1 Use only water and a mild detergent to clean the balance or terminal.2 Wipe off any spills immediately.3 Make sure that no liquid enters the interior of the balance.

ImportantContact a METTLER TOLEDO representative to find about the service options available – regularmaintenance by an authorized service engineer will ensure consistent weighing accuracy over the longterm and extend the service life of the balance.

Maintenance 19Jewelry Balances

4.2 Cleaning the draft shieldIt is possible to remove the sliding glass doors for cleaning or for replacing.

Removing or inserting sliding glass doors

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

door.ImportantFront and rear glass panels cannot be removed.

Maintenance20 Jewelry Balances

5 Technical Data

5.1 General data

WARNINGRisk of electric shockContact 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 ASecondary: 12 V DC, 0.84 A (with electronic overloadprotection)

Balance power supply: 12 V DC, 0.84 ACan be used up to 2000 m height above mean sea level.

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

Optional power supply

AC/DC adapter: Primary: 100 – 240 V, ±10%, 50/60HzSecondary: 12 V DC ±3%, 2.5 A (with electronic overloadprotection)

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

Can be used up to 4000 m height above mean sea level.Battery operation: 8 standard AA (LR6) batteries (alkaline) for 8–15 hours of

use

Protection and standards

Overvoltage category: IIDegree of pollution: 2Protection: Protected against dust and waterStandards for safety and EMC: See Declaration of ConformityRange of application: For use only in closed interior rooms

Environmental conditions

Height above mean sea level: Depending on the power adapter (2000 - 4000 m)Except for China: max. 2000 m

Ambient temperature: Operating condition for ordinary lab application: +10 to 30 °C(operability guaranteed between +5 to 40 °C)

Relative air humidity: 10% up to 80% at 31 °C, linearly decreasing to 50% at40 °C, non-condensing

Warm-up time: At least 30 minutes (0.1 mg models 60 minutes) afterconnecting the balance to the power supply or switched on inbattery operation

Technical Data 21Jewelry Balances

Materials

Housing: Top housing: Plastic (ABS)Bottom housing: Die-cast aluminum, lacquered

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 X2CrNiMo 17-12-2 (1.4404)Draft shield: Plastic (ABS), glassIn-use-cover: Plastic (PET)

Technical Data22 Jewelry Balances

Mettler-Toledo GmbHIm Langacher 448606 Greifensee, Switzerlandwww.mt.com/contact

Subject to technical changes.© Mettler-Toledo GmbH 03/201730348492C en

For more informationwww.mt.com/jewelry

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30348492C 3/13/2017 7:03 AM - Schema ST4 PDF engine - Layout by Victor Mahler

Jewelry Balances - Mettler Toledo · Installation and Putting into Operation12 Jewelry Balances....

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