KERN HUS/HUM
GB
Version 2.0 10/2003
Operating Instructions
Electronic Crane Balances
Table of contents:
1
Technical data ________________________________________________________ 23
1.1
KERN HUS____________________________________________________________ 23
1.2
KERN HUM ___________________________________________________________ 24
2
Declaration of conformty ________________________________________________ 25
3
Fundamental information (general) _______________________________________ 27
3.1
Intended use ___________________________________________________________ 27
3.2
Inappropriate use_______________________________________________________ 27
3.3
Guarantee _____________________________________________________________ 27
3.4
Monitoring the test substances ____________________________________________ 28
4
Fundamental safety information __________________________________________ 28
4.1
Observe the information in the operating instructions ________________________ 28
4.2
Staff training __________________________________________________________ 28
5
Transport and storage __________________________________________________ 29
5.1
Acceptance check _______________________________________________________ 29
5.2
Packaging _____________________________________________________________ 29
6
Unpacking, installation and commissioning_________________________________ 29
6.1
Place of installation, place of use __________________________________________ 29
6.2
Unpacking_____________________________________________________________ 30
6.3
Power Supply Mains Supply ____________________________________________ 30
6.4
Power Supply Battery Supply ___________________________________________ 30
6.5
Initial start-up _________________________________________________________ 31
6.6
Adjustment ____________________________________________________________ 31
6.7
Adjusting______________________________________________________________ 31
7
Operation ____________________________________________________________ 33
7.1
Operating elements KERN HUS___________________________________________ 33
7.1.1
Overview of the keypad _______________________________________________________ 33
7.1.2
Overview of display __________________________________________________________ 34
7.2
Operating elements KERN HUM __________________________________________ 35
7.2.1
Overview of the keypad _______________________________________________________ 35
7.2.2
Overview of display __________________________________________________________ 36
7.3
Remote Control ________________________________________________________ 37
8
Operating Functions ___________________________________________________ 38
8.1
Operating the balance ___________________________________________________ 38
8.2
Setting the balance to zero________________________________________________ 38
8.3
Taring ________________________________________________________________ 38
8.4
Auto Hold Function _____________________________________________________ 39
8.5
Automatic Switch Off (Auto-off) __________________________________________ 39
9
Maintenance, upkeep, disposal ___________________________________________ 40
9.1
Cleaning ______________________________________________________________ 40
9.2
Maintenance, upkeep____________________________________________________ 40
9.3
Disposal _______________________________________________________________ 40
9.4
Troubleshooting ________________________________________________________ 41
1 Technical
data
1.1 KERN
HUS
KERN
HUS60K20 HUS150K50 HUS300K100 HUS600K200
Readout
0.02 kg
0.05 kg
0.1 kg
0.2 kg
Weighing range
60 kg
150 kg
300 kg
600 kg
Taring
60 kg
150 kg
300 kg
600 kg
range(subtractive)
Reproducibility
0.02 kg
0.05 kg
0.1 kg
0.2 kg
Linearity
±0.04 kg
±0.1 kg
±0.2 kg
±0.4 kg
Recommended
20 kg
50 kg
100 kg
200 kg
adjusting weight
or
or
or
or
(not attached)
40 kg
100 kg
200 kg
500 kg
(class M3)
(class M3)
(class M3)
(class M3)
Operating tem-
+0 °C ... + 40 °C
perature
Housing
160 x 140 x 370
(B x D x H) in mm
Weight (net)
3 kg
HUS/HUM-BA-defsi-0320
23
1.2 KERN
HUM
KERN
HUM1000K500
HUM3000K1000 HUM5000K2000 HUM7500K5000
Readout
0,5 kg
1 kg
2 kg
5 kg
Weighing range
1000 kg
3000 kg
5000 kg
7500 kg
Taring
1000 kg
3000 kg
5000 kg
7500 kg
range(subtractive)
Reproducibility
500g
1 kg
2 kg
5 kg
Linearity
±1 kg
±2 kg
±4 kg
±10 kg
Recommended
500kg or
1000kg or
2000kg or
2000kg or
adjusting weight
1000kg
2000kg
5000kg
5000kg
(not attached)
class (M3)
class (M3)
class (M3)
class (M3)
Operating tem-
+0 °C ... + 40 °C
perature
Housing
210 x 228 x 180
210 x 280 x 200
(B x D x H) in mm
Weight (net)
18 kg
38 kg
24
HUS/HUM-BA-defsi-0320
2 Declaration of conformty
KERN & Sohn GmbH
Ziegelei 1
Tel: +49-[0]7433- 9933-0
D-72336 Balingen
Fax: +49-[0]7433-9933-149
E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com
Konformitätserklärung
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 fol-
lowing standards.
Deutsch
Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den nach-
stehenden 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 confor-
me alle norme di seguito citate.
Electronic Scale:
KERN HUM
Mark applied EU Directive
Standards
89/336/EEC EMC
EN 50081-1/1992 :
EN 55014
EN 61000-3-2
EN 61000-3-3
EN 50082-1:
EN 55104 (EN 61000-4-2
EN 61000-4-4, EN 61000-4-5,
EN 61000-4-11, ENV 50140,
ENV 50141)
Date: 22.10.2003
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
HUS/HUM-BA-defsi-0320
25
KERN & Sohn GmbH
Ziegelei 1
Tel: +49-[0]7433- 9933-0
D-72336 Balingen
Fax: +49-[0]7433-9933-149
E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com
Konformitätserklärung
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 fol-
lowing standards.
Deutsch
Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den nach-
stehenden 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 confor-
me alle norme di seguito citate.
Electronic Scale:
KERN HUS
Mark applied EU Directive
Standards
89/336/EEC EMC
EN 50081-1/1992 :
EN 55011+A1 :1998
EN 61000-3-2
EN 61000-3-3
EN 50082-1/1997, EN 50082-2/1995 :
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-11
ENV 50204
Date: 22.10.2003
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
26
HUS/HUM-BA-defsi-0320
3 Fundamental information (general)
3.1 Intended
use
The balance you have acquired serves to determine the weighing value of the mate-
rial to be weighed. It is intended to be used as a "non-automatic" balance, i.e. the
item for weighing is affixed to the crane hook manually, carefully and without jolting
The item for weighing is affixed to the crane hook manually, carefully and without jolt-
ing. The weighing value can be read off after a stable weighing value has been ob-
tained.
3.2 Inappropriate
use
Do not use the balance for dynamic weighing. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the "stability compensation" in the balance. (Example: Slow draining
off of liquid from a container suspended from the balance)
Do not attach a continuous load. This can damage the measuring unit as well as the
parts, relevant to safety.
Prevent jolts, torsion and oscillation (e.g. by appending slopingly) of all kinds. Be sure
to prevent overloading the balance in excess of the stated maximum load (max.), mi-
nus any tare weight that may possibly exist. This could damage the balance (risk of
breakage).
Never operate the balance in hazardous locations. The series design is not explo-
sion-proof.
Structural alterations may not be made to the balance. This can lead to incorrect
weighing results, faults concerning safety regulations as well as to destruction of 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.
Do not use the crane balance to transport loads.
3.3 Guarantee
The guarantee is not valid following
- non-observation of our guidelines in the operating instructions
- use outside the described applications
- alteration to or opening of the device
- mechanical damage and damage caused by media, liquids
- natural wear and tear
- inappropriate erection or electric installation
- overloading of the measuring equipment
HUS/HUM-BA-defsi-0320
27
3.4
Monitoring the test substances
The metrology features of the balance and any possible available adjusting weight
must be checked at regular intervals within the scope of quality assurance. For this
purpose, the answerable user must define a suitable interval as well as the nature
and scope of this check. Information is available on KERN's home page (www.kern-
sohn.com) with regard to the monitoring of balance test substances and the test
weights required for this. Test weights and balances can be adjusted quickly and at
a reasonable price in KERN's accredited DKD calibration laboratory (return to na-
tional normal).
4 Fundamental safety information
Do not use the crane balance to transport loads
Crane balance is only suitable for hanging from a mechanical hook, e.g. a crane
hook
Prevent jolts and torsion of all kinds
Never use the crane balance over the maximum permitted weight
(!!Danger of breaking!!).
Always make sure that there are no living beings or materials below the load that
could be injured or damaged
4.1
Observe the information in the operating instructions
Please read the operating instructions carefully before erecting and commissioning,
even if you already have experience with KERN balances.
4.2 Staff
training
The device may only be operated and looked after by trained members of staff.
28
HUS/HUM-BA-defsi-0320
5 Transport and storage
5.1 Acceptance
check
Please check the packaging immediately upon delivery and the device during un-
packing 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 re-
turn items at any time.
Only the original packaging should be used for return consignments.
Before despatch, disconnect all attached cables and loose/movable parts.
Apply any intended transport security devices. Secure all parts, e.g. glass windshield,
weighing plate, power unit etc., to prevent slipping and damage.
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 achie-
ved 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:
-
Avoid extreme heat as well as temperature fluctuation caused by installing
next to a radiator or in the 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 longer periods of time. In-
admissible 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.
Major display deviations (incorrect weighing results) are possible if electromagnetic
fields occur as well as due to static charging, currents and instable power supply. It is
then necessary to change the location.
HUS/HUM-BA-defsi-0320
29
6.2 Unpacking
Carefully take the balance out of its package, remove the plastic covering and hang
mount the balance at the desired location with the mounting eyelet.
Please keep all parts of the packaging for any possible despatch in the future. Check
the balance immediately for any possible visible damage suffered in transit and check
that the accessories are complete.
Standard accessories:
-
Crane balance with built in rechargeable battery
-
Mains device (for operating the crane balance as well as for charging the built in
rechargeable battery)
-
Remote control (including batteries)
-
Operating instructions
6.3
Power Supply Mains Supply
Set the voltage on the mains adapter to the mains voltage of the socket!
The balance may only be connected with the attached power pack .
POWER
UNIT
HUS
9 V DC
HUM
15 V DC
Connect the adapter lead to the bottom of the balance
Only
then
should the mains adapter be put into the socket.
6.4
Power Supply Battery Supply
The rechargeable battery is built in to the crane balance and can be charged by con-
necting the mains adapter.
CHARGING OPERATING
TIME
TIME
approx. 8 approx. 120
KERN HUS
hours
hours
approx. 8
approx. 120
KERN HUM
hours
hours
Before using for the first time please charge the battery until the charge display (LED
on the bottom) glows green.
30
HUS/HUM-BA-defsi-0320
6.5 Initial
start-up
A warm-up time of 15 inutes stabilises the measured values after switching on.
The accuracy of the balance depends on the local acceleration of the fall.
Please be sure to observe the information in the chapter on adjusting.
6.6 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each balance must be coordinated in compliance with the underlying physical
weighing principle - to the existing acceleration due to gravity at its place of location (
only if the balance has not already been adjusted to the location in the factory). This
adjustment process must be carried out during the initial start-up, after change in lo-
cation and variation of surrounding temperature. It is also recommendable to adjust
the balance periodically during weighing operation in order to obtain exact measured
values.
6.7 Adjusting
Using a precision weight, the accuracy of the balance can be checked at any time
and adjusted.
Adjustment procedure:
Check that the surrounding conditions are stable.
A short warm-up time of about 15 minutes is recommended for stabilisation.
KERN HUS
Balance display
1. Press MODE key and ON/ZERO key simultaneously. CAL?
CAL?
appears on the display
2. Press MODE key. The adjusting is started.
Load
The adjusting is deactivated by pressing any other keys.
e. g. 40.00
or
3. The display tells you to hang the appropriate adjusting
weight on the hook (e. g. 40 kg)
e. g. 20.00
Do not shake the balance
!
4. The adjusting has been completed when the display shows
done
"done".
HUS/HUM-BA-defsi-0320
31
KERN HUM
Balance display
1. Switch off balance
CAL?
2. Switch on balance and simultaneously hold down
ZERO +
MODE
YES
3. Press MODE key. The adjusting is started.
The adjusting is deactivated by pressing any other keys.
Load
4. The display tells you to hang the appropriate adjusting
e. g. 40.00
weight on the hook (e. g. 40 kg)
or
e. g. 20.00
Do not shake the balance
!
5. The adjusting has been completed when the display shows
done
"done".
32
HUS/HUM-BA-defsi-0320
7 Operation
7.1
Operating elements KERN HUS
7.1.1 Overview of the keypad
The following keys are available:
ON/ZERO
key
On switch to switch on the display or if the bal-
ance is switched on the
ON/ZERO
key sets the
balance to zero. The
ZERO
funktion is only ac-
tivated for small loads.
TARE
key
TARE
Recording tare values
The weight display is set to zero by pressing
the TARE key. The TARE function is activated
for the entire weighing range.
MODE
key
Luminous display
This is switched on or off with MODE.
Key required additionally for configuration.
HOLD
key
Freezing the display value
By pressing the HOLD key the value shown in
the display is frozen for a prescribed amount of
time.
(Adjustable time interval)
OFF
key
Switches off key
For switching off the balance.
HUS/HUM-BA-defsi-0320
33
7.1.2 Overview of display
LCD display with the following details
Weight display:
e. g. 20.41
Zero display: o
Balance
zero
display
If the balance is set to zero the circle o in the
upper left hand section of the display lights
up
TARE: <=
Tare display
The arrow in the lower right hand display in-
dicates that a tare value is being applied
Battery charging display:
LED on the lower side of the balance
This lights up when the battery needs to be
recharged.
34
HUS/HUM-BA-defsi-0320
7.2
Operating elements KERN HUM
7.2.1 Overview of the keypad
The following keys are available:
ZERO
key
On switch to switch on the display or if the bal-
ance is switched on the
ON/ZERO
key sets the
balance to zero. The
ZERO
funktion is only ac-
tivated for small loads.
TARE
key
Recording tare values
The weight display is set to zero by pressing
the
TARE
key. The
TARE
function is activated
for the entire weighing range
MODE
key
Key for configuration
HOLD
key
Freezing the display value
By pressing the HOLD key the value shown in
the display is frozen for a prescribed amount of
time.
Power-
key
Switches off key
For switching off the balance.
HUS/HUM-BA-defsi-0320
35
7.2.2 Overview of display
Display with the following details
Gewichtsanzeige:
e. g. 20,41
Zeroanzeige:
Balance
zero
display
If the balance is set to zero, the
ZERO LED
underneath the indicator is illuminated.
TARE: <=
Tare display
The
TARE LED
underneath the indicator il-
luminates when the balance has been set to
zero.
Kg:
Unit
indicator
LED illuminates if kilogramme unit is set
36
HUS/HUM-BA-defsi-0320
7.3 Remote
Control
The maximum distance for the remote control function is approx.:
KERN HUS
3 metres
KERN HUM
25 metres
The following keys are available:
Power
key (KERN HUS)
If the balance is switched off during operation by
the OFF key it is switched to stand-by by pressing
the power key
The following picture appears on the display: - - - -
By pressing the power key once again the display
becomes active again.
The following keys correspond to the keys on the crane balance.
MODE
key
HOLD
key
ZERO
key
TARE
key
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37
8 Operating
Functions
8.1
Operating the balance
· Switch on the balance with the
ON-ZERO(or Power)
key.
The display is switched on and the test is started.
· The zero display appears. The balance is ready for operation.
8.2
Setting the balance to zero
· Environmental conditions can lead to the balance not displaying exactly "
0.00
"
in spite of the hook not taking any strain. However, you can set the display of
your balance to zero any time and therefore ensure that the weighing starts at
zero. Setting to zero with a weight on the balance is only possible within a cer-
tain range which depends on the type of balance being used. If the balance
cannot be set to zero with a weight on it this range has been exceeded. The
weighing range (max.) of the balance is not lost by setting to zero.
8.3 Taring
· The weight of any container can be tared by pressing a button so that with
subsequent weighing the net weight of the object being weighed is always dis-
played.
Hang the empty tare container on the hook. The total weight of the tare container is
displayed.
· Press
the
TARE
key to start the taring process.
· When taring has been completed zero (0.00 kg) and the symbol <= are dis-
played. Your balance is ready for operation.
· Place the object to be weighed in the tare container.
· You can now read the weight from the display.
Tip
The weighing range (max.) of the balance is reduced by the range set to zero.
The balance can store only one tare value.
When the balance has no weight on it the stored tare value is displayed with a minus
sign.
To delete the stored tare value remove the object from the tare container and then
press the
TARE
key.
38
HUS/HUM-BA-defsi-0320
8.4
Auto Hold Function
By pressing the
HOLD
key the weight value (also when the weight value is changing)
is frozen in the display for a prescribed amount of time or until another key is
pressed.
KERN HUS
On the KERN HUS model the setting can be selected whether the "frozen" vallue is
displayed until a key is pressed or whether the balance returns to weighing mode
after pre-defined time intervals.
The amount of time is set as follows:
· Press the
HOLD
key for 2 sec.
· The HOLD-display value shows e.g. HOD _8
8 means the display shows the value being displayed for 8 sec.
· Press the
HOLD
key repeatedly and the following intervals (0, 3, 5, 8, 10, 12, 15,
17, 20 in sec.) are displayed one after the other.
0 means here that the display value remains unchanged until the HOLD key is
pressed again.
· Changing the set interval is done by pressing the
HOLD
key repeatedly. Select the
desired number. Then wait 5 sec. and the time set is stored.
8.5
Automatic Switch Off (Auto-off)
· The balance has the option of an automatic switch off. Here the display is switched
off approx. 4 minutes after the last time the balance was used.
Kern HUS:
· Press the
OFF
key. The display is switched off.
· Hold down the
TARE
key and press the
ON/ZERO
key. The display shows F.1.
Kern HUM:
· Press the
Power-0
key. The display is switched off.
· Hold down the
TARE
key and press the
Power-1
key. The display shows F.1.
· Press the
TARE
key until F.4 appears. Then press the
MODE
key.
0off or 4off appears. (modifying with
MODE
)
0off means no automatic switch off.
4off means automatic switch off after not being used for 4 minutes.
· Select the desired means of switching off and press the
MODE
key.
The setting is stored.
HUS/HUM-BA-defsi-0320
39
9 Maintenance, upkeep, disposal
9.1 Cleaning
Please disconnect the device from the operating voltage before cleaning.
Only use a cloth dampened with mild suds and not aggressive cleaning agents (sol-
vents or similar). Please ensure that fluids are not able to get into the device and rub
off using a clean, soft cloth.
Loose sample residue/powder can be removed carefully using a brush or hand vac-
uum cleaner.
Remove any spilt material to be weighed immediately.
9.2 Maintenance,
upkeep
The operating company shall ensure that load-bearing components are checked by a
competent person at maximum intervals of one year.
These checks can be necessary at intervals shorter than one year depending on the
conditions of use. This applies, for example, in the case of particularly frequent use,
increased wear and corrosion.
The device may only be opened by trained service engineers authorised by KERN.
Disconnect from the mains supply before opening.
9.3 Disposal
The operating company shall dispose of the packaging and the device in compliance
with the valid national or regional law of the operating location.
40
HUS/HUM-BA-defsi-0320
9.4 Troubleshooting
The balance should be switched off for a short time following an interruption in the
programme sequence and disconnected from the mains supply. It is then necessary
to repeat the weighing process from the beginning.
Help:
Interruption Possible
cause
Weight display is not illuminated.
·
The balance is not switched on.
·
The mains supply connection has been
interrupted (mains cable not plugged
in/faulty).
·
Power supply interrupted. .
The weight display changes continu-
·
Draught/air movement
ally
·
Table/floor vibrations
·
The weighing plate is in contact with for-
eign matter.
·
Electromagnetic fields / static charging
(choose different location/switch off inter-
fering device if possible)
The weighing result is obviously in-
·
The balance display is not set to zero
correct
·
Adjustment is no longer correct.
·
Great fluctuations in temperature.
·
Electromagnetic fields / static charging
(choose different location/switch off inter-
fering device if possible)
Switch the balance off if other error messages should appear and then switch on a-
gain. Contact the manufacturer if the error message does not disappear.
HUS/HUM-BA-defsi-0320
41
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