KERN PRS User manual

PRS/PRJ/ARS/ARJ-BA-def-0622 85
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instruction
Precision and analytical balances
KERN PRS/PRJ/ARS/ARJ
Version 2.2
11/2006
GB
PRS/PRJ/ARS/ARJ-BA-e-0622

86 PRS/PRJ/ARS/ARJ-BA-def-0622
GB KERN PRS/PRJ/ARS/ARJ
Version 2.2 11/2006
Operating Instructions
Precision and analytical balance
Table of Contents
1Technical data _____________________________________________________89
2Declaration of conformity____________________________________________95
3Fundamental information (general)____________________________________97
3.1 Intended use ________________________________________________________97
3.2 Inappropriate use ____________________________________________________97
3.3 Guarantee __________________________________________________________97
3.4 Monitoring the test equipment__________________________________________98
4Fundamental safety information ______________________________________98
4.1 Observe the information in the operating instructions______________________98
4.2 Staff training ________________________________________________________98
5Transport and storage ______________________________________________98
5.1 Acceptance check____________________________________________________98
5.2 Packaging __________________________________________________________98
6Unpacking, installation and commissioning ____________________________99
6.1 Place of installation, place of use _______________________________________99
6.2 Unpacking __________________________________________________________99
6.3 Installation _________________________________________________________100
6.3.1 Windshield for PRS and PRJ balances (d=0.1 mg)_______________________________ 101
6.4 Functions of the balance _____________________________________________102
6.5 Equipment overview: ________________________________________________103
6.6 Scope of delivery ___________________________________________________104
6.7 Mains supply _______________________________________________________105
6.8 Connecting peripheral devices ________________________________________105
6.9 Commissioning _____________________________________________________105
6.10 Calibration _________________________________________________________105
6.10.1 External calibration by means of ICM _______________________________________ 106
6.10.2 External calibration with freely selectable weight ______________________________ 107
6.10.3 Internal calibration (only ARJ/PRJ models) __________________________________ 108
6.10.4 Automatic calibration (only ARJ/PRJ models)_________________________________ 108
6.10.5 Balances appropriate for verification (only ARJ/PRJ models)_____________________ 109
6.10.6 Position of verification safety seal (only on ARJ/PRJ models appropriate for verification)110
6.11 Suspended weighing ________________________________________________111
7Modes of operation and use_________________________________________112

PRS/PRJ/ARS/ARJ-BA-def-0622 87
7.1 Switching on the balance_____________________________________________112
7.2 Auto-Standby-Mode _________________________________________________112
7.3 Significance of the two main menus____________________________________112
7.4 Activating the two main menus ________________________________________113
7.4.1 Activating the configuration menu ____________________________________________ 113
7.4.2 Activating the application menu______________________________________________ 113
7.5 How the menu control operates________________________________________113
7.5.1 Control panel____________________________________________________________ 114
7.5.2 Operation in weighing mode ________________________________________________ 114
7.5.3 Operation in programming mode_____________________________________________ 115
7.5.4 Display_________________________________________________________________ 116
7.5.5 Info-line and function keys__________________________________________________ 116
7.5.6 Example of display: Statistics program ________________________________________ 117
7.6 Password protection of the menus _____________________________________118
7.7 Anti-theft encoding __________________________________________________118
8Working with the configuration menu_________________________________120
8.1 Structure of the configuration menu____________________________________120
8.2 Language function __________________________________________________121
8.3 Defining the configuration ____________________________________________122
8.4 Selecting the weight unit _____________________________________________122
8.5 Print functions______________________________________________________123
8.6 Calibration functions ________________________________________________124
8.7 Weighing mode _____________________________________________________125
8.8 Interface functions __________________________________________________126
8.9 Date and time (only PRJ and ARJ models) ________________________________126
8.10 Password protection_________________________________________________127
8.11 Anti-theft encoding __________________________________________________127
9Working with the application menu___________________________________128
9.1 Structure of the application menu______________________________________128
9.2 Selecting an application______________________________________________129
9.3 Setup for “SET APP UNITS”: __________________________________________130
9.4 Setup for “SET APP COUNT”__________________________________________131
9.5 Setup for “SET APP PERCENT” _______________________________________132
9.6 Setup for “SET APP CALCULATOR”____________________________________133
9.7 Setup for “SET APP PAPER”__________________________________________134
9.8 Setup for “SET APP NET TOTAL” ______________________________________135
9.9 Setup for “SET APP TOTALISE” _______________________________________136
9.10 Setup for “SET APP ANIMAL WEIGHING” _______________________________137
9.11 Setup for “SET APP DENSITY” ________________________________________138
9.12 Setup for the statistics program _______________________________________140
9.13 Setup for CHECK weighing ___________________________________________142

88 PRS/PRJ/ARS/ARJ-BA-def-0622
10 Special operating keys ___________________________________________143
10.1 The Tare key “T” ____________________________________________________143
10.2 The CAL key “CAL”__________________________________________________143
10.3 The Print key “PRINT” _______________________________________________144
10.4 The Change key « » _______________________________________________144
11 Data transfer to peripheral devices _________________________________145
11.1 Connection to peripheral devices ______________________________________146
11.2 Data transfer _______________________________________________________147
11.3 Remote-control commands ___________________________________________148
11.4 Examples for the remote control of the balance __________________________149
12 Practical examples ______________________________________________150
12.1 Changing the configuration menu______________________________________150
12.1.1 Setting the choice of language ____________________________________________ 150
12.1.2 Setting the Weight unit __________________________________________________ 150
12.1.3 Setting the Print functions ________________________________________________ 151
12.1.4 Activation of password protection __________________________________________ 152
12.2 Selecting an application program ______________________________________153
12.2.1 Setting for Counting by weighing___________________________________________ 153
12.2.2 Setting the statistics function______________________________________________ 155
13 Further information ______________________________________________158
13.1 Notes on Weighing mode_____________________________________________158
13.1.1 Set Weighing mode: Floating display _______________________________________ 158
13.1.2 Set Weighing mode: Stability control________________________________________ 158
13.1.3 Set Weighing mode: Auto-Standby_________________________________________ 159
13.1.4 Set Weighing mode: Auto-Zero____________________________________________ 159
13.2 Notes on density determination________________________________________160
13.2.1 Density determination “Solid on bottom mode”________________________________ 160
13.2.2 Density determination “Solid in air mode” ____________________________________ 160
13.2.3 Density determination “Liquid mode”________________________________________ 160
13.2.4 14.3.4 Density determination “Porous solid mode” _____________________________ 160
14 Configuration menu tree__________________________________________161
15 Application Menu Tree ___________________________________________164
15.1 Software updates via Internet _________________________________________165
16 Servicing, maintenance, disposal __________________________________165
16.1 Cleaning___________________________________________________________165
16.2 Servicing, maintenance ______________________________________________165
16.3 Disposal ___________________________________________________________165
17 Troubleshooting ________________________________________________166
18 Error messages and correction of faults_____________________________167
18.1 Notes on correcting faults ____________________________________________167

PRS/PRJ/ARS/ARJ-BA-def-0622 89
1 Technical data
KERN PRS 320-3N PRS 620-3N PRS 4200-2N PRS 4200-
2IP65N
Readout (d) 0.001 g 0.001 g 0.01 g 0.01 g
Weighing range (Max) 320 g 620 g 4,200 g 4,200 g
Repeatability 1 mg 1 mg 10 mg 10 mg
Linearity ± 1.5 mg ± 1.5 mg ± 15 mg ± 15 mg
Recommended adjusting
weight, not included (class) 200 g (E2) 500 g (E2) 4000 g (E2) 4000 g (E2)
Minimum piece weight in
count mode 0.001 g 0.001 g 0.01 g 0.01 g
Reference quantity when
counting parts 1-999 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] 135 x 135 135 x 135 170 x 170 170 x 170
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150
Dimensions of weighing
space glass windshield
[mm] 155 x 155 x 55 155 x 155 x 55 - -
Net weight (kg) 5.1 5.1 4.5 4.5
Stabilisation time 2 seconds
Weight units
(verified equipment) mg, g
Weight units
(non-verified equipment) mg, g, GN, dwt, ozt, oz, lb, ct, C.M. tLH, tLM, tLT, mo, Tola
Permissible ambient
conditions 10° C to 30° C
Air humidity max. 80 % relative (non condensing)

90 PRS/PRJ/ARS/ARJ-BA-def-0622
KERN PRS 6200-2N PRS 8200-1N PRS 8200-1IP65N PRS 12200-1N
Readout (d) 0.01 g 0.1 g 0.1 g 0.1 g
Weighing range (Max) 6,200 g 8,200 g 8,200 g 12,200 g
Repeatability 10 mg 0.1 g 0.1 g 0.1 g
Linearity ± 15 mg ± 0.1 g ± 0.1 g ± 0.1 g
Recommended adjusting
weight, not included (class) 5000 g (E2) 5000 g (F2) 5000 g (F2) 10 000 g (F1)
Minimum piece weight in
count mode 0.01 g 0.1 g 0.1 g 0.1 g
Reference quantity when
counting parts 1-999 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] 170 x 170 200 x 200 200 x 200 200 x 200
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150
Net weight (kg) 4.5 4.7 4.7 4.7
Stabilisation time 2 seconds
Weight units
(verified equipment) mg, g
Weight units
(non-verified equipment) mg, g, GN, dwt, ozt, oz, lb, ct, C.M. tLH, tLM, tLT, mo, Tola
Permissible ambient
conditions 10° C to 30° C
Air humidity max. 80 % relative (non condensing)

PRS/PRJ/ARS/ARJ-BA-def-0622 91
KERN PRS 12200-
1IP65N PRJ 320-3NM PRJ 620-3NM PRJ 1200-3N
Readout (d) 0.1 g 0.001 g 0.001 g 0.001 g
Weighing range (Max) 12,200 g 320 g 620 g 1,220 g
Minimum load - 0.02 g 0.02 g -
Verification value - 0.01 g 0.01 g -
Verification categories - II II -
Repeatability 0.1 g 1 mg 1 mg 1 mg
Linearity ± 0.1 g ± 1.5 mg ± 1.5 mg ± 2 mg
Recommended adjustment
weight 10 000 g (F1) - - -
Adjustment weight - internal internal internal
Minimum piece weight in
count mode 0.1 g 0.001 g 0.001 g 0.001 g
Reference quantity when
counting parts 1-999 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] 200 x 200 135 x 135 135 x 135 135 x 135
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150
Dimensions of glass
windshield [mm] - Weighing
space 155 x
155 x 55 Weighing space
155 x 155 x 55 150 x 150 x 60
Net weight (kg) 4.7 5.5 5.5 5.5
Weight units mg, g, GN, dwt,
ozt, oz, lb, ct, C.M.
tLH, tLM, tLT, mo,
Tola mg, g mg, g
mg, g, GN,
dwt, ozt, oz, lb,
ct, C.M. tLH,
tLM, tLT, mo,
Tola
Permissible ambient
conditions 10° C to 30° C
Stabilisation time 2 seconds
Air humidity max. 80 % relative (non condensing)

92 PRS/PRJ/ARS/ARJ-BA-def-0622
KERN PRJ 4200-2NM PRJ 6200-2NM PRJ 6200-1IP65NM PRJ 8200-1NM
Readout (d) 0.01 g 0.01 g 0.1 g 0.1 g
Weighing range (Max) 4,200 g 6,200 g 6,200 g 8,200 g
Minimum load 0.5 g 0.5 g 5 g 5 g
Verification value 0.1 g 0.1 g 1 g 1 g
Verification categories II II II II
Repeatability 10 mg 10 mg 0.1 g 0.1 g
Linearity ± 15 mg ± 15 mg ± 0.1 g ± 0.1 g
Adjustment weight internal internal internal internal
Minimum piece weight in
count mode 0.01 g 0.01 g 0.1 g 0.1 g
Reference quantity when
counting parts 1-999 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] 170 x 170 170 x 170 200 x 200 200 x 200
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150 210 x 340 x 150
Net weight (kg) 5.5 5.5 5.6 5.6
Weight units mg, g, kg
Permissible ambient
conditions 10° C to 30° C
Stabilisation time 2 seconds
Air humidity max. 80 % relative (non condensing)

PRS/PRJ/ARS/ARJ-BA-def-0622 93
KERN PRJ 8200-
1IP65NM PRJ 10200- 1IP65NM ARS 120-4N ARS 220-4N
Readout (d) 0.1 g 0.1 g 0.1 mg 0.1 mg
Weighing range (Max) 8,200 g 10,200 g 120 g 220 g
Minimum load 5 g 5 g - -
Verification value 1 g 1 g - -
Verification categories II II - -
Repeatability 0.1 g 0.1 g 0.1 mg 0.1 mg
Linearity ± 0.1 g ± 0.1 g ± 0.2 mg ± 0.2 mg
Recommended adjusting
weight, not included (class) - -
100 g (E2) 200 g (E2)
Adjustment weight internal internal
Minimum piece weight in
count mode 0.1 g 0.1 g 0.1 mg 0.1 mg
Reference quantity when
counting parts 1-999 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] 200 x 200 200 x 200 Ø80 Ø80
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 150 210 x 340 x 150 210 x 340 x 345 210 x 340 x 345
Dimensions of glass
windshield [mm] - -
205 x 205 x 260
weighing space:
180 x 200 x 240
205 x 205 x 260
weighing space:
180 x 200 x 240
Net weight (kg) 5.6 5.6 5.9 5.9
Weight units mg, g, kg mg, g, kg mg, g, GN, dwt, ozt, oz, lb, ct, C.M.
tLH, tLM, tLT, mo, Tola
Permissible ambient
conditions 10° C to 30° C 15° C to 25° C
Stabilisation time 2 seconds 3 seconds
Air humidity max. 80 % relative (non condensing)

94 PRS/PRJ/ARS/ARJ-BA-def-0622
KERN ARJ 120-4NM ARJ 205-5DM ARJ 220-4NM
Readout (d) 0.1 mg 0.01/0.1 m g 0.1 mg
Weighing range (Max) 120 g 90/205 g 220 g
Minimum load 0.01 g 0.01 g 0.01 g
Verification value 1 mg 1 mg 1 mg
Verification categories III
Repeatability 0.1 mg 0.03/0.1 mg 0.1 mg
Linearity ± 0.2 mg ± 0.06/0.2 mg ± 0.2 mg
Stabilisation time 3 seconds 10/3 seconds 3 seconds
Adjustment weight internal internal internal
Minimum piece weight in
count mode 0.1 mg 0.01 mg 0.1 mg
Reference quantity when
counting parts 1-999 1-999 1-999
Weighing plate, stainless
steel [mm] Ø80 Ø80 Ø80
Dimensions of housing
(W x D x H) [mm] 210 x 340 x 345 210 x 340 x 345 210 x 340 x 345
Dimensions of glass
windshield [mm] 205 x 205 x 260
weighing space:
180 x 200 x 240 205 x 205 x 260 205 x 205 x 260
weighing space:
180 x 200 x 240
Net weight (kg) 6.9 6.9 6.9
Weight units mg, g
Permissible ambient
conditions 15° C to 25° C
Air humidity max. 80 % relative (non condensing)

PRS/PRJ/ARS/ARJ-BA-def-0622 95
2 Declaration of conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postfach 4052
E-Mail: [email protected]
Tel: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
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 marca CE
Dichiarazione di conformitá 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 está 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: KERN ARS, ARJ
KERN PRS, PRJ
Mark applied EU Directive Standards
89/336EEC EMC EN 50081-1
EN 50082-1
EN 55022
Date: 15.01.2006 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149

96 PRS/PRJ/ARS/ARJ-BA-def-0622
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postfach 4052
E-Mail: [email protected]
Tel: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
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 marca CE
Dichiarazione di conformitá per apparecchi contrassegnati con la marcatura CE
English We hereby declare that the product to which this declaration refers conforms with the following
standards. This declaration is only valid with the certificate of conformity by a notified body.
Deutsch Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den
nachstehenden Normen übereinstimmt. Diese Erklärung gilt nur in Verbindung mit der
Konformitätsbescheinigung einer benannten Stelle.
Français Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente déclaration,
est conforme aux normes citées ci-après. Cette déclaration est valide seulement avec un
certificat de conformité d’un organisme notifié.
Español Manifestamos en la presente que el producto al que se refiere esta declaración está de acuerdo
con las normas siguientes. Esta declaratión solo será válida acompañada del certificado de
conformidad de conformidad de la parte nominal.
Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle
norme di seguito citate. Questa dichiarazione sarà valida solo se accompagnata dal certificato
di conformità della parte nominale.
Model: KERN ARJ
PRJ 320-3NM
PRJ 620-3NM
PRJ 1200-3N
PRJ 4200-2NM
PRJ 6200-2NM
PRJ 6200-1IP65NM
PRJ 8200-1NM
PRJ 8200-1IP65NM
PRJ 10200-1IP65NM
EU Directive Standards EC-type-approval
certificate no. Issued by
90/384/EEC EN 45501 D00-09-029 PTB
Date: 15.01.2006 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. [phone],Fax [phone]

PRS/PRJ/ARS/ARJ-BA-def-0622 97
3 Fundamental information (general)
3.1 Intended use
The balance you have purchased is to be used to determine the weight of the material to
be weighed. It is intended to be used as a “non-automatic” balance, i.e. the material to be
weighed is manually and carefully placed in the centre of the weighing plate. The
weighing value can be read off after a stable weighing value has been obtained.
3.2 Inappropriate use
Do not use the balance for dynamic weighing, if small quantities of the material to be
weighed are removed or added. The “stability compensation” function in the balance itself
can result in incorrect weighing results being displayed! (Example: Slowly draining fluids
from a container on the balance.)
Do not leave a permanent load on the weighing plate. This can damage the measuring
equipment.
Be sure to avoid impact shock and overloading the balance in excess of the prescribed
maximum load rating (max.), minus any possible tare weight that is already present. This
could cause damage to the balance.
Never operate the balance in hazardous areas. The standard model is not explosion-
proof.
Structural alterations may not be made to the balance. This can lead to incorrect weighing
results, faults concerning safety regulations and also to serious damage to the balance.
The balance may only be used in compliance with the described guidelines. Varying
areas of application/planned use must be approved by KERN in writing.
3.3 Guarantee
The guarantee is not valid following
•non-observation of our guidelines in the operating instructions
•use other than for the applications described
•alteration to or opening of the device
•mechanical damage and damage caused by media, liquids, or natural wear and tear
•inappropriate installation or electric installation
•overloading of the measuring equipment

98 PRS/PRJ/ARS/ARJ-BA-def-0622
3.4 Monitoring the test equipment
The metrology features of the balance and any possible available test weight must be
checked at regular intervals within the scope of quality assurance. For this purpose, the
user responsible must define a suitable interval as well as the nature and scope of this
check. Please see KERN’s home page (www.kern-sohn.com) for information regarding
the monitoring of balance test equipment and the test weights required for this. Test
weights and balances can be calibrated quickly and at a reasonable price in KERN’s
accredited DKD calibration laboratory (return to national standard).
4 Fundamental safety information
4.1 Observe the information in the operating instructions
Please read the operating instructions carefully before installing and commissioning, even
if you already have experience with KERN balances.
4.2 Staff training
The device may only be operated and maintained by trained members of staff.
5 Transport and storage
5.1 Acceptance check
Please check the packaging immediately upon delivery and check the device during
unpacking for any visible signs of external damage.
5.2 Packaging
Please retain all parts of the original packaging in case it should be necessary to return
items at any time.
Only the original packaging should be used for return consignments.
Before despatch, disconnect all attached cables and loose/movable parts.
Affix any intended transport security devices. Secure all parts, e.g. weighing plate, power
supply unit etc. to prevent slipping and damage.

PRS/PRJ/ARS/ARJ-BA-def-0622 99
6 Unpacking, installation and commissioning
6.1 Place of installation, place of use
The balance is constructed in such a way that reliable weighing results can be achieved
under normal application conditions.
By selecting the correct location for your balance, you will be able to work quickly and
precisely.
Therefore please observe the following at the place of installation:
•Place the balance on a firm, level surface;
•Avoid extreme heat as well as temperature fluctuation caused by installing next to
a radiator or in direct sunlight;
•Protect the balance against direct draughts due to open windows and doors;
•Avoid jarring during weighing;
•Protect the balance against high humidity, vapours and dust;
•Do not expose the device to extreme dampness for long periods of time.
Inadmissible bedewing (condensation of air moisture on the device) can occur if a
cold device is taken into a significantly warmer environment. In this case, please
acclimatise the device for approx. 2 hours at room temperature after it has been
disconnected from the mains.
•Avoid static charging of the material to be weighed and weighing container.
Major display deviations (incorrect weighing results) are possible if electromagnetic fields
occur, as well as due to static charging, currents and unstable power supply. It is then
necessary to change the location.
6.2 Unpacking
Carefully remove the balance from the packaging, remove the plastic cover and install the
balance in the intended workplace.

100 PRS/PRJ/ARS/ARJ-BA-def-0622
6.3 Installation
The balance consists of the balance body (1), the scale pan holder (4) and the pan (5),
which, depending on the model, may be square (fig. 1, right) or round (fig. 1, left).
Depending on the model (see Chapter 1 “Technical Data”) the balance additionally has a
simple windshield (fig. 1, right) or a windshield with sliding doors (fig. 1, left) (2) and/or a
protective ring (3).
Fig. 1 Your balance
Use the foot screws to level the balance until the air bubble is in the prescribed circle in
the spirit level.

PRS/PRJ/ARS/ARJ-BA-def-0622 101
6.3.1 Windshield for PRS and PRJ balances (d=0.1 mg)
The position of the windshield on the
balance can be seen in figure 1 (see 2a).
Note:
If the windshield is not even after assembly,
it can be adjusted according to drawing
below.
Press down the higher corner (arrow) with
moderate force.
If necessary, turn windshield by 90° and
carry out the same operation again until the
windshield sits evenly.

102 PRS/PRJ/ARS/ARJ-BA-def-0622
6.4 Functions of the balance
The versatile weighing program allows you to use the KERN balances of the PRS, PRJ,
ARS, ARJ series not only for simple weighings but also using a simple method to carry
out various weighing applications such as, for example, percentage or component
counting applications and documenting the measurements obtained accurately and
unequivocally.
The most important basic production features of the KERN PRS, PRJ, ARS, ARJ series
include:
•Anti-theft encoding with four-digit numerical code
•Multi-stage password protection for the program menus
•ICM-Autocalibration (Intelligent Calibration Mode)
•5-key multifunction control panel
•LCD display with multi-line display
•ISO and GLP compliant reporting of measurement results
•RS232/V24 serial interface for data transfer
•Storable user-configuration (UMM User Menu Memorized)
•Functions programmed in the factory for:
Parts counting
Percentage weighing
Weighing in different, internationally-valid units
Density determination
Net-total weighing function
•Device for suspended weighing

PRS/PRJ/ARS/ARJ-BA-def-0622 103
6.5 Equipment overview:
1 Cover of the device for suspended weighings
2 Name plate
3 Adjustable feet (for levelling)
4 Weighing plate
5 Multifunction display
6 10-key control panel
7 Serial No. plate
8 Connecting socket for power adaptor
9 RS232 Interface
10 Spirit level
11 Eyelet for attaching a safety chain

104 PRS/PRJ/ARS/ARJ-BA-def-0622
6.6 Scope of delivery
Inspect delivery for completeness immediately on unpacking all components.
d = 0,1 mg d = 1 mg d = 10 mg d = 0,1 mg d = 1 g
Standard accessories
Balance
Scale pan support with weighing plate
Power adaptor
Protective cover for the display
Windshield BASIC
(only balances d = 0.1 mg)
Simple windshield
(only balances d = 1 mg)
Protective ring
(only balances d = 1 mg, d = 10 mg)
Operating instructions