GB
KERN HUS/HUM
Version 2.0 10/2003
Operating Instructions
Electronic Crane Balances
Table of contents:
1 Technical data ________________________________________________________ 23
1.1
1.2
2 Declaration of conformty ________________________________________________ 25
3 Fundamental information (general) _______________________________________ 27
3.1
3.2
3.3
3.4
4 Fundamental safety information __________________________________________ 28
4.1
4.2
5 Transport and storage __________________________________________________ 29
5.1
5.2
6 Unpacking, installation and commissioning_________________________________ 29
6.1
6.2
6.3
6.4
6.5
6.6
6.7
7 Operation ____________________________________________________________ 33
7.1
7.2
7.3
8 Operating Functions ___________________________________________________ 38
8.1
8.2
8.3
8.4
8.5
9 Maintenance, upkeep, disposal ___________________________________________ 40
9.1
9.2
9.3
9.4
KERN HUS____________________________________________________________ 23
KERN HUM ___________________________________________________________ 24
Intended use ___________________________________________________________ 27
Inappropriate use_______________________________________________________ 27
Guarantee _____________________________________________________________ 27
Monitoring the test substances ____________________________________________ 28
Observe the information in the operating instructions ________________________ 28
Staff training __________________________________________________________ 28
Acceptance check _______________________________________________________ 29
Packaging _____________________________________________________________ 29
Place of installation, place of use __________________________________________ 29
Unpacking_____________________________________________________________ 30
Power Supply – Mains Supply ____________________________________________ 30
Power Supply – Battery Supply ___________________________________________ 30
Initial start-up _________________________________________________________ 31
Adjustment ____________________________________________________________ 31
Adjusting______________________________________________________________ 31
Operating elements KERN HUS___________________________________________ 33
7.1.1 Overview of the keypad _______________________________________________________ 33
7.1.2 Overview of display __________________________________________________________ 34
Operating elements KERN HUM__________________________________________ 35
7.2.1 Overview of the keypad _______________________________________________________ 35
7.2.2 Overview of display __________________________________________________________ 36
Remote Control ________________________________________________________ 37
Operating the balance ___________________________________________________ 38
Setting the balance to zero________________________________________________ 38
Taring ________________________________________________________________ 38
Auto Hold Function _____________________________________________________ 39
Automatic Switch Off (Auto-off) __________________________________________ 39
Cleaning ______________________________________________________________ 40
Maintenance, upkeep____________________________________________________ 40
Disposal _______________________________________________________________ 40
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
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
adjusting weight
(not attached)
Operating temperature
Housing
(B x D x H) in mm
Weight (net) 3 kg
60 kg 150 kg 300 kg 600 kg
20 kg
or
40 kg
(class M3)
50 kg
or
100 kg
(class M3)
+0 °C ... + 40 °C
160 x 140 x 370
100 kg
or
200 kg
(class M3)
200 kg
or
500 kg
(class M3)
HUS/HUM-BA-defsi-0320
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1.2 KERN HUM
KERN
Readout 0,5 kg 1 kg 2 kg 5 kg
Weighing range 1000 kg 3000 kg 5000 kg 7500 kg
Taring
range(subtractive)
Reproducibility 500g 1 kg 2 kg 5 kg
Linearity ±1 kg ±2 kg ±4 kg ±10 kg
Recommended
adjusting weight
(not attached)
Operating temperature
Housing
(B x D x H) in mm
HUM1000K500 HUM3000K1000 HUM5000K2000 HUM7500K5000
1000 kg 3000 kg 5000 kg 7500 kg
500kg or
1000kg
class (M3)
210 x 228 x 180 210 x 280 x 200
1000kg or
2000kg
class (M3)
+0 °C ... + 40 °C
2000kg or
5000kg
class (M3)
2000kg or
5000kg
class (M3)
Weight (net) 18 kg 38 kg
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HUS/HUM-BA-defsi-0320
2 Declaration of conformty
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
Deutsch
Français
Español
Italiano
We hereby declare that the product to which this declaration refers conforms with the following standards.
Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt.
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Manifestamos en la presente que el producto al que se refiere esta declaración est´´a de
acuerdo con las normas siguientes
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate.
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Electronic Scale: KERN HUM
Mark applied EU Directive Standards
89/336/EEC EMC
Date: 22.10.2003 Signature:
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
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)
Gottl. KERN & Sohn GmbH
Management
HUS/HUM-BA-defsi-0320
25
Dichiarazione di cofnromitá per apparecchi contrassegnati con la marcatura CE
English
Deutsch
Français
Español
Italiano
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
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
We hereby declare that the product to which this declaration refers conforms with the following standards.
Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt.
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Manifestamos en la presente que el producto al que se refiere esta declaración est´´a de
acuerdo con las normas siguientes
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate.
Electronic Scale: KERN HUS
Mark applied EU Directive Standards
89/336/EEC EMC
Date: 22.10.2003 Signature:
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
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
Gottl. KERN & Sohn GmbH
Management
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 material 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 jolting. 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. 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.), minus 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 explosion-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 national 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.
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5 Transport and storage
5.1 Acceptance check
Please check the packaging immediately upon delivery and 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.
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 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:
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.
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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
HUM
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 connecting the mains adapter.
KERN HUS
KERN HUM
Before using for the first time please charge the battery until the charge display (LED
on the bottom) glows green.
9 V DC
15 V DC
CHARGING
TIME
approx. 8
hours
approx. 8
hours
OPERATING
TIME
approx. 120
hours
approx. 120
hours
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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 location 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?
appears on the display
2. Press MODE key. The adjusting is started.
The adjusting is deactivated by pressing any other keys.
3. The display tells you to hang the appropriate adjusting
weight on the hook (e. g. 40 kg)
Do not shake the balance!
4. The adjusting has been completed when the display shows
“done“.
CAL?
Load
e. g. 40.00
or
e. g. 20.00
done
HUS/HUM-BA-defsi-0320
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KERN HUM Balance display
1. Switch off balance
2. Switch on balance and simultaneously hold down ZERO +
MODE
3. Press MODE key. The adjusting is started.
The adjusting is deactivated by pressing any other keys.
4. The display tells you to hang the appropriate adjusting
weight on the hook (e. g. 40 kg)
CAL?
YES
Load
e. g. 40.00
e. g. 20.00
or
Do not shake the balance!
5. The adjusting has been completed when the display shows
“done“.
done
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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 activated 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.
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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 indicates 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.
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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 activated 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 illuminates when the balance has been set to
zero.
Kg: Unit indicator
LED illuminates if kilogramme unit is set
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7.3 Remote Control
The maximum distance for the remote control function is approx.:
KERN HUS
KERN HUM
The following keys are available:
Power key (KERN HUS) If the balance is switched off during operation by
The following keys correspond to the keys on the crane balance.
MODE key
HOLD key
ZERO key
TARE key
3 metres
25 metres
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.
HUS/HUM-BA-defsi-0320
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 certain 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 displayed.
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.
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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 (solvents 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 vacuum 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.
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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 weight display changes continually
The weighing result is obviously incorrect
• The balance is not switched on.
• The mains supply connection has been
interrupted (mains cable not plugged
in/faulty).
• Power supply interrupted. .
• Draught/air movement
• Table/floor vibrations
• The weighing plate is in contact with for-
eign matter.
• Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
• The balance display is not set to zero
Switch the balance off if other error messages should appear and then switch on again. Contact the manufacturer if the error message does not disappear.
HUS/HUM-BA-defsi-0320
• Adjustment is no longer correct.
• Great fluctuations in temperature.
• Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
41
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