Precisa 520 PT User manual

S W I S S M A D E
520 PT
Operating Instructions
350-8182-000 draft 2

520 PT
Precisa Gravimetrics AG 1
Identification
Operating Instructions, Precisa 520, Semi-micro and analytical balances PT
Item number 350-8182-000
Index draft 2
February 2021
Subject to technical modifications
www.precisa.com
Copyright
No reproduction in any form of this document, in whole or in part, may be made without written
authorization from Precisa Gravimetrics AG.
© Precisa Gravimetrics AG, 8953 Dietikon, Switzerland, 2021

520 PT Table of contents
Precisa Gravimetrics AG 2
Table of contents
1Your new balance......................................................................................................5
1.1 About this manual ..................................................................................................... 5
1.1.1 Symbols and conventions ........................................................................................... 5
1.1.2 Illustrations and buttons............................................................................................. 5
1.2 Unpacking ................................................................................................................ 5
1.3 Transport and shipping............................................................................................... 5
1.4 Storage .................................................................................................................... 6
1.5 Inspection and assembly ............................................................................................ 7
1.6 Safety instructions and conformity............................................................................... 8
1.6.1 Safety instructions ..................................................................................................... 8
1.6.2 Conformity................................................................................................................ 9
2Basics.................................................................................................................................10
2.1 Choosing a suitable location ...................................................................................... 10
2.2 Stability control ....................................................................................................... 10
2.3 Turning on the balance............................................................................................. 11
2.4 Levelling................................................................................................................. 12
2.5 Adjusting the balance............................................................................................... 13
2.6 Working with the balance ......................................................................................... 14
2.7 Turning off the screen, restarting and turning off the balance........................................ 14
2.8 Verified balances ..................................................................................................... 15
3Discover the Capabilities of the balance.............................................16
3.1 Keypad................................................................................................................... 16
3.2 Operation of Touch Screen........................................................................................ 16
3.3 Help, ? ................................................................................................................... 16
3.4 Navigation .............................................................................................................. 17
3.5 Screen shot ............................................................................................................ 18
4The basic structure of the screen..............................................................19
4.1 Header ................................................................................................................... 19
4.2 Designation of the applications or the current application ............................................. 19
4.3 Auxiliary information ................................................................................................ 19
4.4 Help, ? ................................................................................................................... 19
4.5 Home..................................................................................................................... 19
5Current application screen..............................................................................20
5.1 Context Menu, Add On’s ........................................................................................... 20
5.2 Customizer Tab ....................................................................................................... 21
5.3 Status symbol ......................................................................................................... 21
5.4 Notes ..................................................................................................................... 21
5.5 Active Add-On’s and Functions, MSW ......................................................................... 21
5.6 Second display ........................................................................................................ 22
5.7 Capacity display ...................................................................................................... 22
5.8 Info section............................................................................................................. 22
5.8.1 Define the layout ..................................................................................................... 22
5.9 Main display............................................................................................................ 23
5.10 Stability Indicator .................................................................................................... 23
5.11 Action bar and soft button customizing....................................................................... 23
5.11.1 Define soft buttons .................................................................................................. 24
5.12 Warnings, status reports .......................................................................................... 25

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6System Settings........................................................................................................26
6.1 Weighing parameter................................................................................................. 27
6.1.1 Refresh rate............................................................................................................ 27
6.1.2 Environment ........................................................................................................... 27
6.1.3 Filter profile ............................................................................................................ 28
6.1.4 Value release .......................................................................................................... 28
6.1.5 Auto zero................................................................................................................ 28
6.1.6 Quick tare............................................................................................................... 28
6.1.7 Zero range.............................................................................................................. 28
6.2 Data exchange ........................................................................................................ 28
6.2.1 RS232 serial Port..................................................................................................... 29
6.2.2 USB serial Port ........................................................................................................ 31
6.2.3 Mass storage........................................................................................................... 33
6.2.4 Network ................................................................................................................. 35
6.3 Protocol, GLP Header, GLP Footer .............................................................................. 41
6.3.1 GLP Header............................................................................................................. 42
6.3.2 GLP Footer.............................................................................................................. 42
6.3.3 Define text paragraph of GLP header-and GLP-footer ................................................... 43
6.3.4 Define layout der GLP-header and GLP footer .............................................................. 43
6.4 Measurement transfer .............................................................................................. 43
6.5 Device settings........................................................................................................ 45
6.5.1 Device ID ............................................................................................................... 45
6.5.2 Language ............................................................................................................... 45
6.5.3 Advice tone............................................................................................................. 45
6.5.4 Display Backlight ..................................................................................................... 45
6.5.5 Auto standby Off / On .............................................................................................. 45
6.5.6 Device reset............................................................................................................ 45
6.6 Setting Date and Time ............................................................................................. 45
6.7 Minimal Sample Weight and Quality Management, MSW ............................................... 47
6.7.1 USP Chapter 41, Determinatin, Calculation ................................................................. 48
6.8 Setting Foot switch .................................................................................................. 49
6.9 Device.................................................................................................................... 50
6.10 Adjustment ............................................................................................................. 50
6.10.1 Adjustment mode off ............................................................................................... 51
6.10.2 Adjustment mode external........................................................................................ 51
6.10.3 Adjustment mode External Defined ............................................................................ 51
6.10.4 Adjustment mode Internal ........................................................................................ 52
6.10.5 Adjustment mode Automatic ..................................................................................... 52
6.11 Setting Levelling...................................................................................................... 53
7Add-On: Units / Free Conversion ..............................................................55
7.1 Unit ....................................................................................................................... 55
7.2 Interchangeable unit ................................................................................................ 55
7.3 Unit with free conversion .......................................................................................... 55
8Add-On: Statistics ...................................................................................................57
8.1 Statistics Generall settings........................................................................................ 57
8.2 Statistics Recording settings ..................................................................................... 57
8.3 Statistics Mode ........................................................................................................ 58
9Add-On: Identification ........................................................................................60
9.1 Notes .................................................................... Fehler! Textmarke nicht definiert.
9.2 Active Add-On’s and Functions, MSW ........................ Fehler! Textmarke nicht definiert.
9.3 At this point the activated Add-On will be shown with the corresponding icon........... Fehler!
Textmarke nicht definiert.
9.4 Setting up identifications .......................................................................................... 61

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9.4.1 Identification, Mode ................................................................................................. 63
9.4.2 Example for Identifications ....................................................................................... 63
10 Add-On: Protocol .....................................................................................................65
10.1 Protocol Header....................................................................................................... 65
10.2 Protocol Measurement .............................................................................................. 66
10.3 Protocol Footer ........................................................................................................ 68
10.4 Protocol text paragraphs........................................................................................... 68
10.5 Protocol items ......................................................................................................... 69
10.5.1 Insert Protocol items ................................................................................................ 69
10.5.2 Move items ............................................................................................................. 70
10.5.3 Deletes items .......................................................................................................... 70
11 Workign with Users...............................................................................................71
11.1 Change/select user .................................................................................................. 71
11.2 User management ................................................................................................... 72
11.2.1 Creating a user (for administrators only) .................................................................... 72
11.2.2 Deleting a user (for administrators only) .................................................................... 74
11.2.3 Edit user Profile ....................................................................................................... 74
11.2.4 Edit user Settings (for administrators only) ................................................................. 75
11.2.5 Customized user (for administrators only) .................................................................. 76
12 Data transfer ...............................................................................................................80
12.1 Connection ............................................................................................................. 80
12.2 Interface ................................................................................................................ 80
12.3 Daten cables ........................................................................................................... 80
12.4 Remote command.................................................................................................... 80
13 Audit Trail ......................................................................................................................82
13.1 Search data ............................................................................................................ 82
13.2 Export .................................................................................................................... 82

520 PT Your new balance
Precisa Gravimetrics AG 5
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. In
order 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 but only at a later time, 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.
1.3 Transport and shipping
Your balance is a precision instrument. Treat it with care.
Avoid shaking, severe impacts and vibrations during transportation.

520 PT Your new balance
Precisa Gravimetrics AG 6
Ensure that there are no significant temperature fluctuations during transportation and that
the balance does notbecome 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 7
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 Your new balance
Precisa Gravimetrics AG 8
1.6 Safety instructions and conformity
1.6.1 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, 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 split 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 thet 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.

520 PT Your new balance
Precisa Gravimetrics AG 9
Mark applied
EU Directive
Standards
2014/30/EU
2014/35/EU
EN61326
EN61010
1.6.2 Conformity
The device has been manufactured and tested in accordance with the standards and directives set
out in the enclosed certificate of conformity.
Declaration of conformity
Declaration of conformity for apparatus with CE mark
Konformitätserklärung für Geräte mit CE-Zeichen Déclaration de
conformité pour appareils portant la marque CE Declaración de
conformidad para aparatos con disitintivo CE
Dichiarazione di cofnromitá per apparecchi contrassegnati con la marcatura CE
English We hereby declare that the product to which this declaration refers conforms with the following
standards.
Deutsch Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den
nachstehenden Normen übereinstimmt.
Français Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Español Manifestamos en la presente que el producto al que se refiere esta declaración est´´a de
acuerdo con las normas siguientes
Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme
alle norme di seguito citate.
Electronic Balance: Precisa Series 520 PT
Precisa Series 520 PB
Date: 12.06.2020 Signature:
R. Grolimund R & D Manager
Precisa Gravimetrics AG , Moosmattstrasse32 , Postfach 352 , CH-8953 Dietiko

520 PT Basics
Precisa Gravimetrics AG 10
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’,
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 11
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 be defined the user screen will appear after
starting up
NOTE
In order to get exact measurements, ensure the balance has reached its
operating temperature, see 2.6.
12V DC, 3A

520 PT Basics
Precisa Gravimetrics AG 12
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
In order to get exact measurements, the balance must again be carefully
levelled after each relocation.
NOTE
Pressing (Help,?) calls up the contextual help which provides detailled
information about the point you currently are. To close, press (Close).

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Precisa Gravimetrics AG 13
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. In order 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 applications 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.
Openthe application screen and call up ‘Weighing’.

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Precisa Gravimetrics AG 14
If you start the adjustment by a softkey within an application, quit the adjustment with the softkey
(Close).
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 detailled
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, in order to reduce possible mechanical tensions.
Place all loads always carefully and, whenever possible, in the center of the weighing pan!
NOTE
In order to get exact measurements, always choose a suitable location
for the balance, ensure its draft shield workes 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
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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Precisa Gravimetrics AG 15
2.8 Verified balances
Verified balances are provided with the EC/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 Capabilities of the balance
Precisa Gravimetrics AG 16
3Discover the Capabilities of 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 serves 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.
[On/Off]
[Print]
[User]
Switch ON/OFF
[Applications]
[Zero/Tare]
[Zero/Tare]

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Precisa Gravimetrics AG 17
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.
Click on an [Applications] key icon to open the chosen application.
If you don’t want to change application you can go back to the current application with the
(Home) key.
Press the [User] key to enter the user screen
Click the (Home) icon to go back to the weighing application.
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 12
Icons or for menu items exceeding the standard screen height.

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3.5 Screen shot
To create meaningful SOP’s or in a disscusions with customers 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 back side of the balance,
press the [User] key for about 2seconds,
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”.
2. press [Print]
1. press [User] > 2s

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Precisa Gravimetrics AG 19
4The basic structure of the screen
Some components of the screen are always present and therefore fix positioned.
4.1 Header
In the header line, the balance-specific data such as the maximum weighing range “Max”, the
minimum weight “Min”, the readability “d”, the verification interval "e", the user ‘Administrator’,
date and time are displayed
4.2 Designation of the applications or the current
application
Here it’s shown where you are. This can be the user screen, the application screen or the screen of
the current application, which is indicated with the currently running application, e.g. ‘Weighing’,
‘Counting’, ‘Density determination’, ‘Adjustment’etc.
4.3 Auxiliary information
Symbols for connected peripherals such as keyboard, UBS stick, etc. or active network connections
or a WLAN are displayed here.
4.4 Help, ?
The help is context-sensitive. Consequently, by tapping the (Help,?)icon, the help
appropriate to the application or the current screen or application is loaded and displayed.
4.5 Home
The (Home) icon leads back to the set application from any situation. This is extremely
helpful in more complex hierarchies, which can be exited very quickly.