Mettler Toledo XS-Ex2, X-Ex2 Operating Instructions Manual
Excellence Precision Balances
XS-Ex2 and X-Ex2 Models – Part 1
Operating Instructions
Table of Contents
Introduction1 5
Safety Information2 7
Overview Balances and Weighing Platforms for Ex-Zone 23 11
Setting up the Balance4 15
Connection of Peripheral Devices and System Integration5 26
5.1.2 27
5.2.2 28
Maintenance6 29
Technical Data7 32
Symbols and presentations used1.1 6
Definition of signal warnings and symbols2.1 7
Product specific safety notes2.2 7
Overview XS-Ex2 "S" and "M" weighing platform3.1 11
Overview XS-Ex2 "L" weighing platform3.2 12
Overview X-Ex2 "S" and "M" weighing platform3.3 13
Overview X-Ex2 "L" weighing platform3.4 14
Unpacking and checking the delivered items4.1 15
Scope of delivery4.1.1 15
Unpacking the Draft Shield "S" Weighing Platform (Model-dependent)4.1.2 17
Assembling the balance4.2 17
Installing the draft shield and weighing pan4.2.1 17
Placing the terminal on the "L" weighing platform4.2.2 20
Selecting the location and level of the balance4.3 21
Selecting the location4.3.1 21
Leveling the balance4.3.2 21
Installation of the AC adapter PSX24.4 22
Installation in the Ex hazardous area (zone 2)4.4.1 22
Installation outside the Ex hazardous area4.4.2 22
Connection to the balance/weighing platform4.4.3 23
Dismantling4.4.4 24
Marking the balance/weighing platform and the AC adapter4.5 24
Usage of data interface "RS232" in the Ex hazardous area (zone 2)5.1 26
The peripheral device «P» is located inside the Ex hazardous area5.1.1 26
The peripheral device «P» (e.g. PC or printer) is located outside the Ex
hazardous area
Usage of the optional data interface "Bluetooth" in the Ex hazardous area5.2 27
The peripheral device «P» is located inside the Ex hazardous area5.2.1 27
The peripheral device «P» (e.g. printer) is located outside the Ex haz
ardous area
Cleaning6.1 29
Cleaning the draft shield (0.1mg and 1mg models)6.2 30
Disposal6.3 31
General data7.1 32
Table of Contents 3
Model-specif data of the Excellence XS-Ex2 precision balances7.2 33
7.2.1 33
7.3.1 40
7.4.3 47
7.5.1 53
7.5.2 54
7.5.3 55
Accessories and Spare Parts8 61
Certificate of the Issuing Institution9 68
Appendix10 73
Index11 74
XS-Ex2 balances with readability of 0.1 mg / 1 mg, "S" platform with draft
shield
XS-Ex2 balances with readability of 0.1 mg, "S" platform7.2.2 35
XS-Ex2 balances with readability of 10 mg / 0.1 g, "S" platform7.2.3 36
XS-Ex2 balances with readability of 10 mg / 0.1 g, "M" platform7.2.4 37
XS-Ex2 balances with readability of 1 mg / 5 mg, "L" platform7.2.5 38
XS-Ex2 balances with readability of 0.1 g / 1 g, "L" platform7.2.6 39
Model-specif data of the Excellence X-Ex2 precision balances7.3 40
X-Ex2 balances with readability of 0.1 mg / 1 mg, "S" platform with draft
shield
X-Ex2 balances with readability of 10 mg / 0.1 g, "S" platform7.3.2 42
X-Ex2 balances with readability of 10 mg / 0.1 g, "M" platform7.3.3 43
X-Ex2 balances with readability of 0.1 g / 1 g, "L" platform7.3.4 43
Dimensions of the Excellence XS-Ex2 balances7.4 45
XS-Ex2 balances with readability of 0.1 mg, "S" platform with draft shield7.4.1 45
XS-Ex2 balances with readability of 1 mg, "S" platform with draft shield7.4.2 46
XS-Ex2 balances with readability of 10 mg, "S" platform with draft shield
element
XS-Ex2 balances with readability of 0.1 mg, "S" platform7.4.4 48
XS-Ex2 balances with readability of 0.1 g, "S" platform7.4.5 49
XS-Ex2 balances with readability of 10 mg / 0.1 g, "M" platform7.4.6 50
XS-Ex2 balances with readability of 1 mg / 5 mg, "L" platform7.4.7 51
XS-Ex2 balances with readability of 0.1 g / 1 g, "L" platform7.4.8 52
Dimensions of the Excellence X-Ex2 weighing platforms7.5 53
X-Ex2 weighing platforms with readability of 0.1 mg, "S" platform with
draft shield
X-Ex2 weighing platforms with readability of 1 mg, "S" platform with draft
shield
X-Ex2 weighing platforms with readability of 10 mg, "S" platform with draft
shield element
X-Ex2 weighing platforms with readability of 0.1 g, "S" platform7.5.4 56
X-Ex2 weighing platforms with readability of 0.1 g, "M" platform7.5.5 57
X-Ex2 weighing platforms with readability of 0.1 g, "L" platform7.5.6 58
Dimensions of the AC adapter PSX27.6 59
Interfaces7.7 60
Specifications of RS232C7.7.1 60
Accessories8.1 61
Spare parts8.2 66
Power supply PSX29.1 68
Balances XS-Ex2 and platforms X-Ex29.2 70
MT-SICS interface commands and functions10.1 73
Table of Contents4
1Introduction
Thank you for choosing a METTLER TOLEDO balance.
Balances and platforms for use in zone 2 hazardous areas combine a host of weighing and setting possibilities
with uncommon operating comfort.
In this chapter you will be given basic information about your balance. Please read right through this chapter
carefully even if you already have experience with METTLER TOLEDO balances. Please pay special attention to
the safety warnings!
The different models have different characteristics regarding equipment and performance. Special notes in the
text indicate where this makes a difference to operation.
The XS-Ex2/X-Ex2 family comprises a range of balances which differ from each other in relation to their weigh
ing range and resolution.
The following features are common to all models of the XS lines:
●
Type of protection: Ex nL for use in zone 2 hazardous areas.
●
Fully automatic adjustment "FACT" using internal weight.
●
Built-in applications for normal weighing, statistics, formulation, density, percent weighing, piece counting,
dynamic weighing and LabX Client (only XS-Ex2 models).
●
Integral RS232C interface.
●
Slot for second interface (optional).
●
Touch-sensitive graphics terminal ("Touch screen") for easy, convenient operation (only XS-Ex2 models).
A brief word about standards, guidelines, and methods of quality assurance: The balances comply with usual
standards and guidelines. They support standard procedures, specifications, working methods, and reports
according to GLP (Good Laboratory Practice). In this connection, records of working procedures and adjust
ments become very important; for this purpose we recommend you to use a printer from the METTLER TOLEDO
range, since these are optimally adapted to your balance. The balances conform to the applicable standards
and guidelines and possess a EC declaration of conformity. METTLER TOLEDO is certified as manufacturer
according to ISO9001 and ISO14001.
The operating instructions for the XS-Ex2/X-Ex2 balances consist of 3 separate documents, whose con
tents are listed below.
Part 1, this document
Contents
●
Introduction
●
Safety notes
●
Setting up the balance/weighing platform
●
Leveling the balance/weighing platform
●
Installation of the AC adapter PSX2
●
Connection of peripheral devices and system integration
●
Cleaning and service
●
Technical data
●
Accessories
●
Spare parts
●
Certificate of the issuing institution
●
Interface commands and MT-SICS functions
5Introduction
Part 2, separate document (only XS-Ex2 balances)
1
2
…
Contents: Terminal, System, and Applications
●
Basic principles for using the terminal and the firmware
●
System settings
●
Applications
●
Firmware (Software) updates
●
Error and status messages
●
Conversion table for weight units
●
Recommended printer settings
Part 3, separate document (only XS-Ex2 balances)
Contents: Adjustments, and Tests
●
Adjustments
●
Tests
Finding more information
Internet http://www.mt.com/excellence
1.1Symbols and presentations used
The following conventions apply to the operating instructions: part 1, part 2 and part 3.
Key designations are indicated by a picture or text in double angular parentheses (e.g. [ ] or [On/Off]).
This symbol indicates press key briefly (less than 1.5 s).
This symbol indicates press and hold key down (longer than 1.5 s).
These symbols indicate an instruction:
prerequisites
steps
results
6 Introduction
2Safety Information
2.1Definition of signal warnings and symbols
Safety notes are indicated by signal words and warning symbols and contain warnings and information about
safety issues. Ignoring safety notes can lead to personal injury, damage to the instrument, malfunctions and
erroneous results.
Signal words
WARNING for a hazardous situation with medium risk, possibly resulting in severe
injuries or death if not avoided.
CAUTION for a hazardous situation with low risk, resulting in damage to the device or
the property or in loss of data or minor or medium injuries if not avoided.
Attention (no symbol)
for important information about the product.
Note (no symbol)
for useful information about the product.
Warning symbols
General hazard Electrical shock
2.2Product specific safety notes
Approved for use in zone 2 hazardous areas
The AC adapter PSX2 supplies the power to the XS-Ex2 precision balances and X-Ex2 preci
sion weighing platforms for their intended use in the Ex hazardous area classified as zone 2.
In this zone, ignitable concentrations of flammable gases, vapors or liquids are not likely to
occur in normal operation, and if they do occur, will exist for only a short period. The AC
adapter can be installed inside or outside the Ex hazardous area.
Use in zone 1 and 0 is not permitted.
General safety information
Your instrument meets the state of the art technology and complies with all recognized safety rules, however,
certain hazards may arise in extraneous cirmumstances. Do not open the housing of the instrument: It does not
contain any parts which can be maintained, repaired or replaced by the user. If you ever have problems with
your instrument, contact your authorized METTLER TOLEDO dealer or service representative.
Always operate and use your balance only in accordance with the operating instructions part1, part2 and
part3.
The instructions for setting up your new balance/weighing platform must be strictly observed.
If the instrument is not used according to the manufacturer’s operating instructions (part1, part2 and
part3), protection of the instrument may be impaired.
Heavy object
7Safety Information
Staff safety
In order to use the instrument, you must have read and understood the operating instructions. Keep the operat
ing instructions for further reference.
Never make any modifications or constructional alterations to the instrument and use only original spare parts
and optional equipment from METTLER TOLEDO.
Safety notes
CAUTION
Damage of device
– For use only in dry interior rooms.
– Do not use sharply pointed objects to operate the keyboard! Although your balance is very
ruggedly constructed, it is nevertheless a precision instrument. Treat it with corresponding
care.
CAUTION
Risk of electric shock
Use only the AC adapter PSX2 delivered with your balance/weighing platform, and check that
the voltage printed on its the same as your local power supply voltage.
WARNING
Heavy object
– Single person lift could cause injury.
– Do not move or lift this equipment without assistance.
8 Safety Information
Safety instructions regarding installation and operation in the Ex hazardous area, zone 2
CAUTION
Safety instructions
– The installation may be performed only by a qualified electrician as described in this
installation information.
– Check whether special clothing or special tools are needed for work in the hazardous area
of the end-user and then wear or use these if required.
– Find out whether the use of certain electronic devices (cell phones, computers, etc.) is pro
hibited in the hazardous area of the end-user, and then follow these regulations.
– Establishing and separating the connections to the power supply are exclusively the task of
the electrician(s) of the end user.
– Any modifications to the balance/weighing platform and AC adapter, as well as repairs to
the assemblies, are prohibited. These actions endanger the safety of the system, result in
loss of the Ex Approval, and nullify any warranty and product liability claims.
– Service work and repairs may be performed only by personnel authorized by METTLER
TOLEDO.
– The classification as zone 2 must be confirmed by the regulatory body of your profession.
– Check that the balance and AC adapter are in perfect condition before putting into operation
for the first time and at least every 3 years.
– It is important to observe the European Directive on Equipment Intended for Use in Poten
tially Explosive Atmospheres (94/9/CE)!
– Only accessories which are explicitly mentioned in this document may be used, and they
must be installed and operated as described here.
– Installation work on the balance/weighing platform must be carried out outside the haz
ardous area.
Safety measures during operation in the Ex hazardous area, zone 2
CAUTION
Damage of device
– AC adapter and balance may be operated only when the housing is closed.
– The instrument must only be cleaned with a damp cloth.
Note
– According to Directive 94/9/EU (ATEX 95), XS-Ex2 precision balances, X-Ex2 precision
weighing platforms, and the AC adapter PSX2 are Group II, Category 3G devices that,
according to Directive 99/92/EU (ATEX 137), can be used in zone 2, as well as in Gas
Groups IIA, IIB and IIC, which are potentially ignitable by combustible substances in the
range of Temperature Classes T1 to T5.
– For use/installation, the requirements of EN 60079-14 must be observed.
9Safety Information
Special conditions X for the AC adapter PSX2
CAUTION
Damage of device
– The power supply cable of the METTLER TOLEDO Type AC adapter PSX2 must be installed
with protection against mechanical damage.
– Only the special plug-connector of the output circuit may be plugged into, or unplugged
from, a power-consuming device such as a balance while it is under voltage.
– The internal inductance (including the connecting cable) of any power-consuming device
connected to the AC adapter must not exceed ≤ 30 µH, and its internal capacity must not
exceed ≤ 4.9 µF.
Special condition X for the balance/weighing platform
CAUTION
Damage of device
– XS-Ex2 precision balances and X-Ex2 precision weighing platforms can only be used in
closed and clean interior spaces.
– The instrument must only be cleaned using a damp cloth.
Technical data of the precision balances in the XS/X-Ex2 line and the AC adapter PSX2.
See Technical Data (page32).
10 Safety Information
3Overview Balances and Weighing Platforms for Ex-Zone 2
1mg
Power Supply Aux 1 Aux 2 RS 232 C
1
2
3
4
5
6
7
7
9
8
8
10
7
7
7
10
10
1111
6
11
12
10
11
13
14
15161718
7
11
10
3.1Overview XS-Ex2 "S" and "M" weighing platform
2 Display (Touch-sensitive "Touch screen")
XS-Ex2 View S and M Platform
1 Terminal (details see Operating Instruction –
Part 2)
3 Operating keys 4 Type name
5 Level indicator 6 Draft shield element
7 Weighing pan 8 Handle for operation of the draft-shield door
9 Glass draft shield 10 Foot screws
11 Safety feet (10 mg, 0.1 g + 1 g models) 12 Fastening point for anti-theft device
13 RS232C serial interface 14 Aux 1 (connection for "ErgoSens")
15 Aux 2 (connection for "ErgoSens") 16 Fastening for auxiliary display stand or termi
nal stand (optional)
17 Socket for AC adapter 18 Slot for second interface (optional)
11Overview Balances and Weighing Platforms for Ex-Zone 2
3.2Overview XS-Ex2 "L" weighing platform
8
1
2
4
5
5
9
67
6
3
10
10
11
12
13
15
14
17
1618
19
XS-Ex2 View L Platform
1 Terminal (details see Operating Instruction –
2 Display (Touch-sensitive "Touch screen")
Part 2)
3 Operating keys 4 Type name
5 Weighing pan 6 Foot screws
7 Cover 8 Fastening point for anti-theft device
9 Draft shield 10 Points of attachment for terminal or cover
11 Fastening for terminal stand (optional) 12 Level indicator
13 Aux 1 (connection for "ErgoSens") 14 Aux 2 (connection for "ErgoSens")
15 RS232C serial interface 16 Socket for AC adapter
17 Connector for terminal cable 18 Slot for second interface (optional)
19 Cover plate for below-the balance weighing
(hook optional)
12 Overview Balances and Weighing Platforms for Ex-Zone 2
3.3Overview X-Ex2 "S" and "M" weighing platform
1mg
7
1
1
4
2
3
4
5
6
58
8
8
8
1
1
4
4
3
7
7
7
Power Supply Aux 1 Aux 2 RS 232 C
9
10
11
12131415
X-Ex2 View S and M Platform
1 Type name 2 Level indicator
3 Draft shield element 4 Weighing pan
5 Handle for operation of the draft-shield door 6 Glass draft shield
7 Safety feet (10 mg, 0.1 g + 1 g models) 8 Foot screws
9 Fastening point for anti-theft device 10 RS232C serial interface
11 Aux 1 (connection for "ErgoSens") 12 Aux 2 (connection for "ErgoSens")
13 Fastening for auxiliary display stand or termi
14 Socket for AC adapter
nal stand (optional)
15 Slot for second interface (optional)
13Overview Balances and Weighing Platforms for Ex-Zone 2
3.4Overview X-Ex2 "L" weighing platform
2
1
5
34
3
6
6
7
8
9
11
10
13
1214
15
X-Ex2 View L Platform
1 Type name 2 Weighing pan
3 Foot screws 4 Cover
5 Fastening point for anti-theft device 6 Points of attachment for terminal or cover
7 Fastening for terminal stand (optional) 8 Level indicator
9 Aux 1 10 Aux 2
11 RS232C serial interface 12 Socket for AC adapter
13 Connector for terminal cable 14 Slot for second interface (optional)
15 Cover plate for below-the balance weighing
(hook optional)
14 Overview Balances and Weighing Platforms for Ex-Zone 2
4Setting up the Balance
This chapter describes how to unpack your new balance, set it up and prepare it for operation. On completion
of the steps described in this chapter, your balance is ready for operation.
CAUTION
Risk of electric shock
– The balance/weighing platform must be disconnected from the power supply before any
set-up or installation work.
– All unpacking, set-up, installation or disassembly work must be performed outside the
hazardous area.
4.1Unpacking and checking the delivered items
Open the packaging and carefully remove all components.
4.1.1Scope of delivery
Note
The AC adapter PSX2 is not included in the scope of delivery for the balance/weighing platform and must be
ordered separately (11132730).
Components S platform
0.1 mg XS2004SX
XS-Ex2 balance or X-Ex2 weighing plat
form
Draft shield "Pro" with bottom plate – – –
Draft shield – – – – –
Draft shield element – –
Ring seal – – – –
Pan support –
Weighing pan
Operating Instructions Part 1 (this docu
ment)
Operating Instructions Part 2 and Part 3
(only XS-Ex2 balances)
Production certificate
CE declaration of conformity
ø 90 mm – – – –
ø 258 mm – – – – –
127 x 127mm – – –
170 x 205mm – – – –
190 x 223mm – – – –
237 x 237mm – – – – –
280 x 360mm – – – – –
1 mg 10 mg 0.1 g
0.1mg
Components M platform * L platform
10 mg 0.1 g 1 g 0.1 g 1 g
15Setting up the Balance
Components M platform * L platform
XS-Ex2 balance or X-Ex2 weighing plat
form
Draft shield "Pro" with bottom plate – – – – –
Draft shield – – – – –
Draft shield element – –
Ring seal – – – – –
Pan support – –
Weighing pan
Operating Instructions Part 1 (this docu
ment)
Operating Instructions Part 2 and Part 3
(only XS-Ex2 balances)
Production certificate
CE declaration of conformity
ø 90 mm – – – – –
ø 258 mm – – – – –
127 x 127mm – – – – –
170 x 205mm – – – – –
190 x 223mm – – – – –
237 x 237mm – –
280 x 360mm – – –
* The precision balances with M platform are no longer available.
Components L platform
1 mg 5mg
XS-Ex2 balance or X-Ex2 weighing plat
form
Draft shield "Pro" with bottom plate – –
Draft shield
Draft shield element – –
Ring seal – –
Weighing pan
Operating Instructions Part 1 (this docu
ment)
Operating Instructions Part 2 and Part 3
(only XS-Ex2 balances)
Production certificate
CE declaration of conformity
ø 90 mm – –
ø 258 mm
127 x 127mm – –
170 x 205mm – –
190 x 223mm – –
237 x 237mm – –
280 x 360mm – –
16 Setting up the Balance
4.1.2Unpacking the Draft Shield "S" Weighing Platform (Model-dependent)
1
2
3 5 4
4 3
1
2
4
3
1 Place the draft shield on a clean surface.
2 Turn so the cover (1) is vertically on top.
3 Lift the carton (2) off over the handle and the pull the carton off
toward the back.
4 Hold the glass panels firmly so they do not get pulled off and fall to
the floor.
5 Close the cover (1) again.
6 Push all the glass panels as far as they will go to the back.
Balance with 0.1 mg readability
1 Place the ring seal (3) into the draft shield base (4) from above.
2 Push the complete ring seal (3) through the opening in the draft
shield base.
3 Pull the top edge upward through the opening until the edge lies
flat and tight all the way round.
4 Check by running a finger all the way round that the seal ring (3)
is fitted tightly into the opening in the draft shield base (4).
5 Insert the bottom plate (5).
Balance with 1 mg readability
– Insert the bottom plate (5).
4.2Assembling the balance
The size of the weighing pan depends on the readability and maximum capacity of the balance.
4.2.1Installing the draft shield and weighing pan
Balances with readability of 0.1 mg, "S" platform with draft shield
– Place the following components on the balance in the specified
order:
Attention
Push the side glass back as far as it will go. Grasp the draft shield
with both hands on the bars at the top.
●
Draft shield (1) with ring seal inserted, see Unpacking the Draft
Shield "S" Weighing Platform (Model-dependent) (page17).
●
Bottom plate (2), if not already inserted, see Unpacking the Draft
Shield "S" Weighing Platform (Model-dependent) (page17)!
●
Draft shield element (3).
●
Weighing pan (4).
Note
Cleaning the draft shield, see Cleaning the Draft Shield (0.1mg and
1mg Models) (page30).
17Setting up the Balance
Balances with readability of 1 mg, "S" platform with draft shield
1
2
4
3
1
2
3
1
2
3
– Place the following components on the balance in the specified
order:
Attention
Push the side glass back as far as it will go. Grasp the draft shield
with both hands on the bars at the top.
●
Draft shield (1) with ring seal inserted.
●
Bottom plate (2), if not already inserted, see Unpacking the Draft
Shield "S" Weighing Platform (Model-dependent) (page17)!
●
Pan support (3).
●
Weighing pan (4).
Note
Cleaning the draft shield, see Cleaning the Draft Shield (0.1mg and
1mg Models) (page30).
Balances with readability of 0.1 mg, "S" platform
– Place the following components on the balance in the specified
order:
●
Draft shield element (1).
●
Pan support (2).
●
Weighing pan (3).
Balances with readability of 10 mg, "S" platform with draft shield
element
– Place the following components on the balance in the specified
order:
●
Pan support (1).
●
Weighing pan (2).
●
Draft shield element (3).
Note
It is also possible to work without the draft shield element (3). Howev
er, depending on the ambient conditions, the display of the results
may be slightly more unstable.
18 Setting up the Balance
Balances with readability of 10 mg ("M" platform), 0.1 g ("S" and
1
2
1
2
"M" platform) and 1 g ("M" platform)
– Place the following components on the balance in the specified
order:
●
Pan support (1).
●
Weighing pan (2).
Balances with readability of 1 mg and 5 mg ("L" platform)
Attention
Remove the cells of the transport lock screws!
– Place the following components on the balance in the specified
order:
●
Weighing pan (1).
●
Draft shield (2).
19Setting up the Balance
4.2.2Placing the terminal on the "L" weighing platform
1
2
2
22
5
3
4
2
2
1
3
46
6
The terminal can be attached to the long or short side of the balance.
1 Mount the weighing pan.
2 Carefully turn the weighing platform over onto the weighing pan.
Attaching the terminal to the long side
1 Dismantle the cover (1) by removing the 2 screws (2).
2 Attach the terminal to the terminal support (5) as shown, using the
screws (2) from the cover that was removed.
3 Insert the terminal cable (3) into the cable channel, as shown.
4 Screw the connector of the terminal cable into the socket (4).
5 Turn the balance back over into position.
Attaching the terminal to the short side
1 Dismantle the cover (1) by removing the 2 screws (2).
2 Attach the terminal with terminal support to the points of attachment
(6) with the screws (2).
3 Insert the terminal cable (3) into the cable channel, as shown.
4 Screw the connector of the terminal cable into the socket (4).
5 Turn the balance back over into position.
20 Setting up the Balance
4.3Selecting the location and level of the balance
11
22
Your balance is a precision instrument and will thank you for an optimum location with high accuracy and
dependability.
4.3.1Selecting the location
Choose a position which is stable, free from vibration, and as nearly
horizontal as possible. The supporting surface must be able to bear
the weight of the fully loaded balance safely.
Avoid the following:
●
Direct sunlight
●
Draft (e.g. from fans or air conditioning)
●
Excessive fluctuations in temperature.
Further information can be found in Weighing the Right Way.
Observe ambient conditions, see General data (page32).
4.3.2Leveling the balance
Balances with readability of 1mg "S" platform and balances with "L" platform
1 Align the balance horizontally.
2 Turning the leveling screws of the housing until the air bubble is in
the inner circle of the level indicator.
The position of the air bubble illustrates which leveling screw
you need to turn (L = left leveling screw, R = right leveling
screw) and in which direction so that the air bubble moves to
the center.
Example
In this example, turn the left leveling screw counterclockwise.
Balances with readability of 10mg, 0.1g and 1g ("S" and "M" platforms)
1 Remove the clamps (1) for the safety feet by turning them out
wards.
Attention
Turn the clamps (1) outwards as far as they will go (~ 90°), so
that the safety feet can move freely.
2 Now level the balance by turning both leveling screws (2) until the
air bubble is in the inner circle of the level indicator.
3 Secure the safety feet by turning the clamps (1) inwards as far as
they will go.
Note
The balance must be leveled and adjusted each time it is moved to a
new location.
21Setting up the Balance
4.4Installation of the AC adapter PSX2
Zone 2
Country-specific 115/230 V power supply
connection
WARNING
Risk of electric shock
– Your weighing platform has been delivered with a country-specific AC adapter. Check
whether the local power supply voltage is compatible with the AC adapter. If this is not the
case, on no account connect the AC adapter to the power supply but contact your responsi
ble METTLER TOLEDO dealer.
– The installation may be performed only by a qualified electrician.
4.4.1Installation in the Ex hazardous area (zone 2)
If the AC adapter is installed in zone 2, the power supply cable must either be connected to the screw terminals
or a connection box outside the hazardous area, or to a connection box of suitable protection type within the
hazardous area of the building.
An all-pole supply isolation device must be
connected on the line side of the screw termi
nals of the building installation.
1 Install AC adapter in a permanent position so
that it is protected against mechanical dam
age.
2 Attach power cable to the screw terminals of
the building installation as follows:
Core end yellow/green = ground
Core end black No. 1 = phase
Core end black No. 2 = neutral conductor
3 Route power cable so that it is protected
against mechanical damage.
4.4.2Installation outside the Ex hazardous area
If the AC adapter is installed outside the hazardous area and only the balance/platform is in the hazardous
area, the AC adapter can also be connected to the building installation using a commercial plug connection. In
such a case the power plug is used as a supply isolation device.
Note
The power plug is not included in the standard equipment.
22 Setting up the Balance
1 Install AC adapter in a permanent position so
Zone 2 Outside
hazardous
area
Country-specific 115/230 V power supply
connection
that it is protected against mechanical dam
age.
2 Connect 3-pin power plug to power cable:
Core end yellow/green = ground
Core end black No. 1 = phase
Core end black No. 2 = neutral conductor
3 Plug power plug into receptacle outlet of the
building installation.
4 Route power cable so that it is protected
against mechanical damage.
4.4.3Connection to the balance/weighing platform
1 Connect the AC adapter to the connector socket
on the backside/underside of your bal
ance/weighing platform.
2 Secure the connection to the balance by screw
ing the plug tightly.
3 Install the cable in such a way that it will not
be damaged and will not hinder day-to-day
work.
After the balance/weighing platform has
been connected to the power supply, it car
ries out a self-test and is then ready for
operation.
"S" and "M" platform
"L" platform
23Setting up the Balance
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