KERN EMB-S Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Precision balances
KERN EMB-S
Version 2.1
2021-03
GB
EMB-S-BA-e-2121

EMB-S-BA-e-2121
2
GB
KERN EMB-S
Version 2.12021-03
Operating instructions - Precision balances
Contents
1Technical data................................................................................................ 3
2Basic Information (General).......................................................................... 5
2.1 Intended use.............................................................................................................. 5
2.2 Improper Use............................................................................................................. 5
2.3 Warranty.................................................................................................................... 5
2.4 Monitoring of Test Resources.................................................................................... 6
3Basic Safety Precautions.............................................................................. 6
3.1 Pay attention to the instructions in the Operation Manual .......................................... 6
3.2 Personnel training...................................................................................................... 6
4Transport and storage................................................................................... 6
4.1 Testing upon acceptance........................................................................................... 6
4.2 Packaging / return transport....................................................................................... 6
5Unpacking, Setup and Commissioning ....................................................... 7
5.1 Installation Site, Location of Use................................................................................ 7
5.2 Unpacking.................................................................................................................. 8
5.2.1 Placing........................................................................................................................................ 8
5.2.2 Scope of delivery........................................................................................................................ 8
5.3 Overview of display.................................................................................................... 8
5.4 Keyboard overview .................................................................................................... 9
5.5 Transport Securing.................................................................................................... 9
5.6 Battery operation (Standard).....................................................................................10
5.7 Mains connection (option).........................................................................................10
5.8 Initial Commissioning................................................................................................10
5.9 Adjustment................................................................................................................11
6Operation...................................................................................................... 13
6.1 Weighing...................................................................................................................13
6.2 Taring .......................................................................................................................13
6.3 Weighing Units..........................................................................................................14
7Menu ............................................................................................................. 14
7.1 Navigation in the menu.............................................................................................14
7.2 Description of individual menu items.........................................................................15
7.2.1 AUTO OFF function.................................................................................................................. 15
7.3 Zero-Tracking ...........................................................................................................15
7.4 Reset function...........................................................................................................16
8Servicing, maintenance, disposal .............................................................. 16
8.1 Cleaning ...................................................................................................................16
8.2 Servicing, maintenance.............................................................................................16
8.3 Disposal....................................................................................................................16
9Instant help................................................................................................... 17
10 Declaration of Conformity........................................................................... 18

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1 Technical data
KERN EMB
200-1S
EMB
500-1S
EMB
2000-0S
EMB
5000-0S
Readability (d) 0,1 g 0,1 g 1 g 1 g
Weighing range (max) 200 g 500 g 2000 g 5000 g
Reproducibility 0.01 g 0.1 g 0.01g 0.01 g
Linearity ± 0.2 g ± 0.2 g ± 2 g ± 2 g
Recommended adjustment
weight, not added (class) 200 g
(M1)
500 g
( M2 )
2000 g
(M1)
5000 g
( M2 )
Stabilization time (typical) 2-3 sec.
AUTO-OFF-function
(With battery operation)
3 min.
Units dwt, g, oz, ozt
Operating temperature +5°C… +35°C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 145 x 205 x 45
Weighing plate mm Ø 120
Battery operation (Standard) 2 x 1.5 V AA
Operating period: 12 h
Mains adapter (Option) 300 mA / 9 V
Underfloor weighing Hooks

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KERN EMB
500-2S
EMB
3000-1S
Product No / Type TEMB
500-2S-A
TEMB
3000-1S-A
Readability (d) 0,01 g 0,1 g
Weighing range (max) 500 g 3000 g
Reproducibility 0,01 g 0,2 g
Linearity ± 0,03 g ± 0,3 g
Recommended adjustment
weight, not added (class)
500 g
(F2)
3000 g
(F2)
Stabilization time (typical) 2-3 sec.
AUTO-OFF-function
(With battery operation)
3 min.
Units dwt, g, oz, ozt
Operating temperature +5°C… +35°C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 145 x 205 x 45
Weighing plate mm Ø 120
Battery operation (Standard) 2 x 1.5 V AA
Operating period: 12 h
Mains adapter (Option) 300 mA / 9 V
Underfloor weighing Hooks

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2 Basic Information (General)
2.1 Intended use
The balance you purchased is intended to determine the weighing value of 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
pan. As soon as a stable weighing value is reached the weighing value can be read.
2.2 Improper Use
Do not use 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“. (Example: Slowly draining fluids from a
container on the balance.)
Do not leave permanent load on the weighing pan. This may damage the measuring
system.
Impacts and overloading exceeding the stated maximum load (max) of the balance,
minus a possibly existing tare load, must be strictly avoided. Balance may be
damage by this.
Never operate balance in explosive environment. The serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
2.3 Warranty
Warranty claims shall be voided in case
- Our conditions in the operation manual are ignored
- Appliance used outside the described uses
- Appliance modified or opened
- Mechanical damage and damage caused by media, liquids
- Natural wear and tear
- Appliance improperly set up or incorrectly electrically connected
- Measuring system overloaded

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2.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
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. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
3 Basic Safety Precautions
3.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and commissioning, even if you
are already familiar with KERN balances.
3.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
4 Transport and storage
4.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
4.2 Packaging / return transport
Keep all parts of the original packaging for a possibly required
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile
parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.

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5 Unpacking, Setup and Commissioning
5.1 Installation Site, Location of Use
The balances are designed in a way that reliable weighing results are achieved in
common conditions of use.
You will work accurately and fast, if you select the right location for your balance.
Therefore, observe the following for the installation site:
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 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. Non-permitted condensation (condensation of air humidity on the
appliance) may occur if a cold appliance is taken to a considerably
warmer environment. In this case, acclimatize the disconnected
appliance for ca. 2 hours at room temperature.
Avoid static charging of the material to be weighed, weighing container
and windshield.
If electro-magnetic fields or static charge occur, or if the power supply is unstable
major deviations on the display (incorrect weighing results) are possible. In that case,
the location must be changed.

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5.2 Unpacking
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
5.2.1 Placing
The balance must be installed in a way that the weighing plate is exactly in horizontal
position.
5.2.2 Scope of delivery
Serial accessories:
KERN EMB-S
•Balance
•Batteries (2 x 1.5V AA)
•Operating instructions
5.3 Overview of display
1
Stability display
2
Negative value
3
Balance set at zero
4
Net weight
5
Capacity display
6
Weighing Units

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5.4 Keyboard overview
•Switch on balance
•Tare balance
•
How to change weighing units
•Switch off the balance
•Adjustment menu access (longer pressing of the button)
5.5 Transport Securing
Before putting into operation, unlock the transport locking device on underside of
weighing scale, see illustration below:
Transport Securing
Transport locking device locked
During transport of weighing scale
Transport security loosened
In weighing mode
If
the transport locking device remains locked in weighing mode, an error
message “E“ will appear on reaching max load.

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5.6 Battery operation (Standard)
Remove battery cover on the underside of the weighing pan. Insert 2 x 1.5 V
batteries. Reinsert the battery cover.
In order to save the battery, the balance switches automatically off after 3 minutes
without weighing.
If the batteries are run down, "LO" appears in the display. Press button and
replace the batteries immediately.
If the balance is not used for a longer time, take out the batteries and store them
separately. Leaking battery liquid could damage the balance.
5.7 Mains connection (option)
Power supply is provided by the external power supply unit KERN YKA-03 (optional).
The stated voltage value must be the same as the local voltage.
Only use original KERN mains adapters. Using other makes requires consent by
KERN.
5.8 Initial Commissioning
A warming up time of 3 minutes after switching on stabilizes the measuring values.
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter “Adjustment”.