Precisa 520 PT User manual

0000S W I S S M A D E
520 PT
Operating Instructions
350-8182-000 a2

520 PT
Precisa Gravimetrics AG 1
Conformity

520 PT Table of contents
Precisa Gravimetrics AG 2
Safety instructions
When the balance is used in environments with increased safety requirements, the relevant
precautions must be taken.
•The balance must only be operated with a power adapter and power cable in perfect
conditions.
•The balance may only be operated with the power adapter and power cable supplied.
•Be sure to hold the plug, not the cable, when disconnecting the device from an electrical
outlet.
•If the cable or the power adapter or its cable is damaged, unplug the device immediately
from the electrical outlet and keep it from inadvertent operation.
•If safe operation of the balance is not possible, it must be disconnected from the power
supply and secured against unintentional use.
•Do not operate the device in an area subject to explosion risks or caustic atmospheres.
•Take care when handling with liquids, that no liquid is spilled into the inside of the
balance, on connections of the device, on the power cable and the power adapter. Should
this although happen, unplug the device immediately from the electrical outlet and keep it
from inadvertent operation. The balance may only be operated again after a re-check
made by a service technician.
•The device may only be used for weighing of solid materials, of liquids filled into secure
containers, and for running applications designed especially for the device (e.g. density
determination).
•Do not exceed the maximum permissible load of the balance.
When using the balance in combination with other appliances made by the original manufacturers
as well as with appliances produced by other manufacturers, the current regulations for the safe
use of the relevant attachments and their application in accordance with instructions must always
be observed.
DANGER
Before connecting the device to the mains, be sure that the operating
voltage stated on the device and on the power adapter and power
cable agrees with the local mains voltage. If it doesn't, the equipment
must not be connected to the mains at all!
NOTE
If any damage or injury occurs, liability and responsibility rest with
the user.
Identification, Support and Copyright
Subject to technical modifications.
Refer to our website for information about local customer service centers and details of their
addresses. www.precisa.com
© Precisa Gravimetrics AG, 8953 Dietikon, Switzerland
No reproduction in any form of this document, in whole or in part, may be made without written
authorization from Precisa Gravimetrics AG.

520 PT Table of contents
Precisa Gravimetrics AG 3
Table of contents
1Your new balance.................................................................................................................6
1.1 About this manual ................................................................................................. 6
1.1.1 Symbols and conventions ....................................................................................... 6
1.1.2 Illustrations and buttons......................................................................................... 6
1.2 Unpacking ............................................................................................................ 6
1.3 Transport and shipping........................................................................................... 7
1.4 Storage ................................................................................................................ 7
1.5 Inspection and assembly ........................................................................................ 8
2Basics....................................................................................................................................9
2.1 Choosing a suitable location .................................................................................... 9
2.2 Stability control ..................................................................................................... 9
2.3 Turning on the balance..........................................................................................10
2.4 Levelling..............................................................................................................11
2.5 Adjusting the balance............................................................................................12
2.6 Working with the balance ......................................................................................13
2.7 Turning off the screen, restarting and turning off the balance.....................................13
2.8 Verified balances ..................................................................................................14
3Discover the balance......................................................................................................... 15
3.1 Keypad................................................................................................................15
3.2 Operation of Touch Screen.....................................................................................15
3.3 Help, ? ................................................................................................................15
3.4 Navigation ...........................................................................................................16
3.5 Current application ...............................................................................................17
3.6 Application screen.................................................................................................17
3.7 User screen..........................................................................................................18
3.8 Screen shots ........................................................................................................18
4The basic structure of the screen..................................................................................... 20
4.1 Header ................................................................................................................20
4.2 Designation of the applications or the current application ..........................................20
4.3 Auxiliary information .............................................................................................20
4.4 Help, ? ................................................................................................................20
4.5 Home..................................................................................................................20
5Current application screen................................................................................................ 21
5.1 Context Menu, Add-Ons.........................................................................................21
5.2 Customizer Tab ....................................................................................................22
5.3 Status symbol ......................................................................................................22
5.4 Notes ..................................................................................................................23
5.5 Active Add-Ons and Functions, MSW .......................................................................23
5.6 Second display .....................................................................................................23
5.7 Capacity display ...................................................................................................23
5.8 Info section..........................................................................................................23
5.8.1 Define the layout ..................................................................................................23
5.9 Main display.........................................................................................................24
5.10 Stability Indicator .................................................................................................24
5.11 Action bar and soft button customizing....................................................................24
5.11.1 Define soft buttons ...............................................................................................25
5.12 Warnings, status reports .......................................................................................26

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6System Settings ................................................................................................................ 27
6.1 Weighing parameter..............................................................................................27
6.1.1 Refresh rate.........................................................................................................28
6.1.2 Environment ........................................................................................................28
6.1.3 Filter profile .........................................................................................................28
6.1.4 Value release .......................................................................................................29
6.1.5 Auto zero.............................................................................................................29
6.1.6 Quick tare............................................................................................................29
6.1.7 Zero range...........................................................................................................29
6.2 Data exchange .....................................................................................................30
6.2.1 Data exchange channels ........................................................................................30
6.2.2 Data exchange modes 'Protocol' and 'Measurement transfer' ......................................30
6.2.3 RS232 serial port..................................................................................................32
6.2.4 USB device as USB serial port ................................................................................33
6.2.5 USB device as USB HID .........................................................................................33
6.2.6 Mass storage........................................................................................................34
6.2.7 Network ..............................................................................................................35
6.3 Protocol, GLP Header, GLP Footer ...........................................................................40
6.3.1 GLP Header..........................................................................................................41
6.3.2 GLP Footer...........................................................................................................42
6.3.3 Define text paragraph of GLP header-and GLP-footer ................................................42
6.4 Measurement transfer ...........................................................................................43
6.5 Device settings.....................................................................................................44
6.5.1 Device ID ............................................................................................................44
6.5.2 Language ............................................................................................................44
6.5.3 Advice tone..........................................................................................................44
6.5.4 Display Backlight ..................................................................................................45
6.5.5 Auto standby Off / On ...........................................................................................45
6.5.6 Reference unit......................................................................................................45
6.5.7 Device reset.........................................................................................................45
6.6 General ...............................................................................................................45
6.7 Setting Date and Time ..........................................................................................45
6.8 Minimal Sample Weight and Quality Management, MSW ............................................47
6.8.1 Parameters for the Minimal Sample Weight ..............................................................47
6.8.2 Determination of the Minimal Sample Weight ...........................................................48
6.8.3 USP Chapter 41, Determinatin, Calculation ..............................................................49
6.8.4 Notes for the Minimal Sample Weight ......................................................................49
6.9 Setting Foot switch ...............................................................................................49
6.10 About Device........................................................................................................50
6.11 Adjustment ..........................................................................................................51
6.11.1 Adjustment mode off ............................................................................................52
6.11.2 Adjustment mode external.....................................................................................52
6.11.3 Adjustment mode External Defined .........................................................................52
6.11.4 Adjustment mode Internal .....................................................................................53
6.11.5 Adjustment mode Automatic ..................................................................................53
6.12 Levelling..............................................................................................................54
7Add-On: Units / Free Conversion....................................................................................... 56
7.1 Unit ....................................................................................................................56
7.2 Interchangeable unit .............................................................................................56
7.3 Unit with free conversion .......................................................................................56
8Add-On: Statistics.............................................................................................................. 58
8.1 Statistics Generall settings.....................................................................................58
8.2 Statistics Recording settings ..................................................................................58
8.3 Statistics Mode .....................................................................................................59

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9Add-On: Identification ....................................................................................................... 61
9.1 Setting up identifications .......................................................................................61
9.1.1 Identification, Mode ..............................................................................................63
9.1.2 Example for Identifications ....................................................................................63
10 Add-On: Checkweigher ...................................................................................................... 65
10.1 Setting up the Checkweigher..................................................................................65
10.2 Customize the Checkweigher..................................................................................66
10.2.1 Example for protocol output ...................................................................................68
11 Add-On function Peak-Hold ............................................................................................... 69
11.1 Application examples ............................................................................................69
11.1.1 Mode Manual........................................................................................................69
11.1.2 Mode Automatic ...................................................................................................71
11.1.3 Indication in protocols ...........................................................................................74
12 Add-On: Protocol................................................................................................................ 75
12.1 Protocol Header....................................................................................................75
12.2 Protocol Measurement ...........................................................................................76
12.3 Protocol Footer .....................................................................................................78
12.4 Protocol text paragraphs........................................................................................78
12.5 Protocol items ......................................................................................................79
12.5.1 Insert Protocol items .............................................................................................79
12.5.2 Move items ..........................................................................................................80
12.5.3 Deletes items .......................................................................................................80
13 Workign with Users .......................................................................................................... 81
13.1 Change/select user ...............................................................................................81
13.2 User management ................................................................................................81
13.2.1 Create user (for administrators only) ......................................................................82
13.2.2 Deleting a user (for administrators only) .................................................................84
13.2.3 Edit the user Settings (for administrators only) ........................................................85
13.2.4 Customized user (for administrators only) ...............................................................86
14 Data transfer, data exchange ........................................................................................... 89
14.1 Hardware connections ...........................................................................................89
14.2 Interfaces ............................................................................................................89
14.3 Daten cables ........................................................................................................89
14.4 Remote command.................................................................................................89
15 Audit Trail.......................................................................................................................... 91
15.1 Search data .........................................................................................................91
15.2 Export .................................................................................................................91

520 PT Your new balance
Precisa Gravimetrics AG 6
1Your new balance
Thank you for purchasing a new Precisa balance from the 520 series.
1.1 About this manual
This manual has been written to help you working with your new balance. Read this manual
thoroughly before use and keep it where all those who use the instrument will read it.
1.1.1 Symbols and conventions
DANGER
Warning of a possible danger which can lead to death or serious
physical injuries.
WARNING
Warning of a possibly dangerous situation which can lead to less
severe injuries or damage.
NOTE
Tips and important rules on the correct operation of the balance.
1.1.2 Illustrations and buttons
Illustrations and screenshots shown in this manual may differ from actual display.
Keys, Icons, soft buttons or functions to be pushed, held or selected are printed between
quotations marks e.g. call up 'Adjustment' or specially marked e.g. press [On/Off], press
[Help,?] or hold [Transfer].
1.2 Unpacking
Our balances are delivered in packages which provide optimum protection during transportation.
To avoid damage, attention must be given to the following points when unpacking the balance:
•Unpack the balance carefully. It is a precision instrument.
•When outside temperatures are very low, the balance should be first stored for some
hours in the unopened transport package in a dry room at normal temperature, so that no
condensation settles on the balance when unpacking.
•Check the balance immediately after unpacking for externally visible damage. Should you
find transport damage, please inform your services representative immediately.
•If the balance is not to be used immediately after purchase, it should be stored in a dry
place where fluctuations in temperature are as low as possible.
NOTE
Retain the original packaging in order to avoid damaging the balance
during shipping or transport and to enable the balance to be stored in
ideal conditions (5 .. 40°C / 41 .. 104°F) when out of use for long
periods.

520 PT Your new balance
Precisa Gravimetrics AG 7
1.3 Transport and shipping
•Your balance is a precision instrument. Treat it with care.
•Avoid shaking, severe impacts and vibrations during transportation.
•Ensure that there are no significant temperature fluctuations during transportation and
that the balance does not become damp (condensation).
NOTE
The balance should preferably be dispatched and transported in the
original packaging to avoid transportation damage.
1.4 Storage
When taking the balance out of service for an extended period, disconnect it from the mains,
clean it thoroughly and store it in a place which meets the following conditions:
•No violent shaking, no vibrations
•No significant temperature fluctuations
•No direct solar radiation
•No moisture

520 PT Your new balance
Precisa Gravimetrics AG 8
1.5 Inspection and assembly
Inspect delivery for complete supply immediately on unpacking all components.
Components supplied, depending on balance type
•Balance
•Pan holder
•Weighing pan
•Protective ring for A
•Centring ring for M balances
•Protection and shield plate for C, D, G balances
•Draft shield for A or M balances
•Power adaptor
•Protection cover for the balance
•Short instructions

520 PT Basics
Precisa Gravimetrics AG 9
2Basics
2.1 Choosing a suitable location
The balance location must be chosen in such a way as to guarantee perfect operation of your
balance, so that the allowable ambient conditions and prerequisites are met and maintained:
•Place the balance on a solid, firm and vibration-proof, horizontal base.
•Protect the balance from direct solar radiation.
•Avoid drafts and excessive temperature fluctuations.
•Ensure the balance cannot be shaken or knocked over.
NOTE
With difficult conditions (where the balance may be easily shaken or
subject to vibration) the balance can nevertheless provide accurate
results through suitable adjustment of the stability control, see 2.2.
2.2 Stability control
For setting all different weighing parameters:
•Enter the application screen,
•Call up 'Settings',
•Call up 'Weighing parameters', and
•Set all parameters upon your requirements.
NOTE
Pressing [Help,?] calls up the contextual help which provides detailled
information about the point you currently are. For quitting help, press
[Close].

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Precisa Gravimetrics AG 10
2.3 Turning on the balance
The following safety recommendations must be observed when connecting the balance to the
mains:
DANGER
The balance may only be operated with the power adapter and
power cable supplied.
Before connecting the device to the mains, be sure that the
operating voltage stated on the device and on the power adapter
and power cable agrees with the local mains voltage. If it
doesn't, the equipment must not be connected to the mains at
all!
•Connect the balance to the mains with the supplied power adapter and power cable.
•Turn on the balance by pressing [On/Off]. The balance starts-up and halts at the user
screen.
•Select Administrator by calling up 'Administrator'. The balance starts-up executing the
Weighing application.
NOTE
If users already have been defined the user screen will appear after
starting up
NOTE
To get exact measurements, ensure the balance has reached its
operating temperature, see 2.6.
12V DC, 3A

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Precisa Gravimetrics AG 11
2.4 Levelling
To function properly, the balance must be precisely horizontal. Thatfor it is equipped with an
electronic levelling device which makes appear a visual warning on the display if the balance is
tilted outside the internally stored levelling tolerances. To readjust the levelling:
•Enter the application applications screen and call up 'Levelling'.
•Keep adjusting the levelling feet as instructed by the display, until the bubble is right in
the center of the displayed bubble level.
•Enter the application screen for returning to the weighing application.
NOTE
To get exact measurements, the balance must again be carefully
levelled after each relocation.
NOTE
Pressing [Help,?] calls up the contextual help which provides detailed
information about the point you currently are. To close, press [Close].

520 PT Basics
Precisa Gravimetrics AG 12
2.5 Adjusting the balance
Since the earth's gravity is not the same everywhere, each balance must - in accordance with the
underlying physical weighing principle - be adjusted to compensate for the gravity at each
location. This adjustment process must be carried out on initial installation and after each
subsequent relocation. To get exact measurements, it is recommended moreover, that the
balance should also be adjusted periodically.
•Ensure the balance has reached its operating temperature.
•Enter the application screen and call up 'Adjustment'.
•Press [Start] ⇒the balance automatically adjusts itself by meanings of the built-in self
calibration system (SCS). When this is done it shows the message 'Adjustment done'.
•As soon as calibration has been completed, the message 'Calibration completed' appears.
•Open the application screen and call up 'Weighing'.
If you start the adjustment by a softkey within an application, quit the adjustment with the
softkey [Close].

520 PT Basics
Precisa Gravimetrics AG 13
NOTE
The balance must be adjusted on initial installation and after every
relocation.
If you work in accordance with Good Laboratory Practice (GLP),
observe the prescribed intervals between calibrations (adjustments).
For setting all different adjustment modes,
•Open application screen,
•Call up 'Settings',
•Scroll down, call up 'Adjustment',
•Press 'Adjustment mode' and
•Select the mode you wish.
NOTE
Pressing [Help,?] calls up the contextual help which provides detailed
information about the point you currently are. For quitting help, press
[Close].
2.6 Working with the balance
Always choose a suitable location for the balance as described in chapter 2.1.
Before starting to work with the balance, always ensure the balance has been warming-up for at
least two hours. Best never disconnecting it from the mains, just turning off its display by
pressing [On/Off] when not in use, see 2.7 Turning off the screen, restarting and turning off the
balance. When restarting to work with the balance again, turn on the screen and place and
remove full load for a moment, to reduce possible mechanical tensions.
Place all loads always carefully and, whenever possible, in the center of the weighing pan!
NOTE
To get exact measurements, always choose a suitable location for the
balance, ensure its draft shield works properly, ensure it has reached
its operating temperature, ensure it is levelled and adjusted, and place
loads carefully in the center of the weighing pan.
2.7 Turning off the screen, restarting and turning off
the balance
When the balance is running, the [On/Off] switch has two functions:
•Pressing [On/Off] briefly turns the screen off and on. When not using the balance, this is
the best way for saving the screen and keeping the balance always at operating
temperature at the same time.
•Holding [On/Off] for a few seconds calls up the power mode window, giving you the
possibility to turn off the balance, restart the balance or to abort the process.
For turning the balance totally off, disconnect it from the mains.
DANGER
Be sure to hold the plug, not the cable, when disconnecting the
balance from an electrical outlet!

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2.8 Verified balances
Verified balances are provided with the EU/OIML certification or meet the local verification
regulations.
On verified balances, the balance range and certain weighing functions differ from standard.
NOTE
Your local dealer will be happy to assist you at any time if you have
any questions about verifying your balance or working with verified
balances.

520 PT Discover the balance
Precisa Gravimetrics AG 15
3Discover the balance
The balance is equipped with a high-resolution touch screen panel and 6 fix integrated operation
keys. The ease of operation is maintained by a highly intuitive user Interface. The touch panel is
operable through standard laboratory rubber and silicon gloves as well as cotton gloves.
3.1 Keypad
The 6 fixed operation keys serve to perform the most used operations as:
3.2 Operation of Touch Screen
The series 520 balances is equipped with a high resolution Touch Screen panel. The ease of
operation is maintained by a highly intuitive user interface.
3.3 Help, ?
No matter where you are, press the [Help,?] icon to get context-sensitive help.

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Precisa Gravimetrics AG 16
3.4 Navigation
There are 3 main screens:
•Current application screen where you perform the weighings and measurements
(Weighing, Counting, …)
•Application screen to choose the application and the device settings.
•User screen to select the user or to define new users
Press the [Applications] key to enter the application screen
•At the Application Screen click on an [Applications icon] e.g. 'Weighing' to open the
chosen application.
•If you don't want to change the application go back to the current application b y clicking
the [Home] icon.
Press the [User] key to enter the user screen
•At the User Screen click on an [User icon] e.g. 'Administrator' to open the chosen user or
task.
•If you don't want to change the user go back to the current application by clicking the
[Home] icon.
NOTE
If you have already defined users, the user screen might be shown
after starting up. In this case you have to choose first a user to enter
the balance software and as consequence no [Home] icon is shown.
Vertical scrolling is performed by a simple pan. Typically used for screens with more than 6
icons or for menu items exceeding the standard screen height.

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3.5 Current application
All work resp. Measurements that you carry out with the balance run on the current application
screen; no matter whether it is a simple weighing, an adjustment or a complex application such
as density determination. Due to the variety of applications, the appearance of the application
screen can differ considerably.
3.6 Application screen
The application screen provides access to the various applications and the basic settings of the
balance. The appearance remains basically the same on your scale.

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Precisa Gravimetrics AG 18
•At the Application Screen click on an [Applications icon] e.g. 'Weighing' to open the
chosen application.
3.7 User screen
The user screen is used to access and define the different user profiles. In principle, the
appearance always remains the same regardless of the newly defined users who join them
•At the User Screen click on an [User icon] e.g. 'Administrator' to open the chosen user or
task.
3.8 Screen shots
To create meaningful SOP's or in a disscusion with customer service and support a screen shot is
often very useful. To save a screen shot:
•Plug a USB memory stick into the USB HOST connector on the backside of the balance
•Press the [User] key for about 2 seconds
•Press the [Print] key until a sound informs the screen shot is saved on the USB memory
stick in the folder “screenshot” as bitmap “.BMP”.

520 PT Discover the balance
Precisa Gravimetrics AG 19