KERN GAB-N User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: [email protected]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Bench scales
KERN GAB-N
Version 1.5
10/2013
GB
GAB-N-BA-e-1315

2 GAB-N-BA-e-1315
GB
KERN GAB-N
Version 1.5 10/2013
Operating Instructions Bench Scales
Table of Contents
1Technical Data ................................................................................................ 4
2Basic Information (General)........................................................................... 6
2.1 Proper use ................................................................................................................................... 6
2.2 Improper Use............................................................................................................................... 6
2.3 Warranty ...................................................................................................................................... 7
2.4 Monitoring of Test Resources...................................................................................................... 7
3Basic Safety Precautions............................................................................... 7
3.1 Pay attention to the instructions in the Operation Manual........................................................... 7
3.2 Personnel training........................................................................................................................ 7
4Transportation & Storage............................................................................... 8
4.1 Testing upon acceptance ............................................................................................................ 8
4.2 Packaging / return transport ........................................................................................................ 8
5Unpacking, Setup and Commissioning ........................................................ 8
5.1 Installation Site, Location of Use ................................................................................................. 8
5.2 Unpacking/installation................................................................................................................ 10
5.2.1 Scope of delivery / serial accessories ................................................................................... 11
5.3 Mains connection....................................................................................................................... 11
5.4 Rechargeable battery operation (option)................................................................................... 12
5.5 Connection of peripheral devices .............................................................................................. 12
5.6 Initial Commissioning................................................................................................................. 12
6Appliance overview ...................................................................................... 13
7Overview of displays.................................................................................... 14
8Keyboard overview....................................................................................... 15
9Adjustment.................................................................................................... 16
9.1 Verified models.......................................................................................................................... 17
9.2 Non-verifiable models:............................................................................................................... 18
9.3 Verification................................................................................................................................. 19
9.4 Linearization (non-verified models only).................................................................................... 21
10 Operation....................................................................................................... 23
10.1 Weighing.................................................................................................................................... 23
10.2 Weighing with tare ..................................................................................................................... 23
10.3 Percent weighing ....................................................................................................................... 24
10.4 Parts counting............................................................................................................................ 25
10.5 Weighing with tolerance range .................................................................................................. 26
10.5.1 Traffic light function ............................................................................................................... 26
10.6 Manual totalizing........................................................................................................................ 28
10.7 Automatic adding-up.................................................................................................................. 30

GAB-N-BA-e-1315 3
11 The menu....................................................................................................... 32
11.1 Navigation in the menu:............................................................................................................. 32
11.1.1 Non verifiable models ............................................................................................................ 32
11.1.2 Verifiable models ................................................................................................................... 32
11.2 Overview:................................................................................................................................... 33
11.2.1 Non verifiable models ............................................................................................................ 33
11.2.2 Verifiable models ................................................................................................................... 35
12 Data output.................................................................................................... 36
12.1 RS232 interface......................................................................................................................... 36
12.1.1 Technical data ....................................................................................................................... 36
12.1.2 Pin allocation of balance output bushing:.............................................................................. 36
12.1.3 Explanation of the data transfer............................................................................................. 37
12.2 Remote control instructions ....................................................................................................... 37
13 Service, maintenance, disposal................................................................... 38
13.1 Cleaning..................................................................................................................................... 38
13.2 Service, maintenance ................................................................................................................ 38
13.3 Disposal..................................................................................................................................... 38
13.4 Error messages ......................................................................................................................... 39
14 Instant help.................................................................................................... 40
15 Declaration of -Conformity........................................................................... 41

4 GAB-N-BA-e-1315
1 Technical Data
KERN
GAB 6K1DNM
GAB 15K2DNM
GAB 30K5DNM
Readability (d)
1 g /2 g
2 g /5 g
5 g /10 g
Weighing range (max)
3 kg /6 kg
6 kg /15 kg
15 kg /30 kg
Reproducibility
1 g /2 g
2 g /5 g
5 g /10 g
Linearity
± 1 g / 2 g
± 4 g / 10 g
± 5 g / 10 g
Stabilization time
2 s
2 s
2 s
Verification value (e)
1 g /2 g
2 g /5 g
5 g /10 g
Verification class
III
III
III
Minimum weight (min)
20 g
40 g
100 g
Weighing Units
kg
kg
kg
Recommended adjusting
weight (not supplied)
6 kg (M1)
15 kg (F2)
30 kg (M1)
Warm-up time
10 min.
10 min.
10 min.
Minimum unit weight at
piece count
0.2 g
0.5 g
1 g
Admissible ambient
conditions
-10° C to +40° C
Humidity of air
max. 80 % relative (not condensing)
Weighing surface (mm)
294 x 225
Dimensions of the housing
(B x D x H) (mm)
320 x 330 x 125
Electric Supply
Supply voltage: 220V-240V AC 50 Hz
Mains adapter: 12 V, 500 mA
Rechargeable battery,
not included
Working life approx. 40 h (with background light)
Working life approx. 90 h (without background light)
Loading time approx. 12 hrs.
Net weight (kg)
4.4 kg
interface
RS 232C

GAB-N-BA-e-1315 5
KERN
GAB 6K0.05N
GAB 12K0.1N
GAB 30K0.2N
Readability (d)
0.05 g
0.1 g
0.2 g
Weighing range (max)
6 kg
12 kg
30 kg
Reproducibility
0.05 g
0.1 g
0.2 g
Linearity
± 0.15 g
± 0.3 g
± 0.6 g
Stabilization time
2 s
2 s
2 s
Weighing Units
kg, g
kg, g
kg, g
Recommended adjusting
weight (not supplied)
6 kg (F2)
12 kg (F2)
20 kg (F1)
10 kg (F1)
Warm-up time
2 h
2 h
2 h
Minimum unit weight at
piece count
0.05 g
0.1 g
0.2 g
Admissible ambient
conditions
0° C to 40° C
Humidity of air
max. 80 % relative (not condensing)
Weighing surface (mm)
294 x 225
Dimensions of the housing
(B x D x H) (mm)
320 x 330 x 125
Electric Supply
Supply voltage: 220V-240V AC 50 Hz
Mains adapter: 12 V, 500 mA
Rechargeable battery,
not included
Working life approx. 40 h (with background light)
Working life approx. 90 h (without background light)
Loading time approx. 12 hrs.
Net weight (kg)
3.06 kg
interface
RS 232C

6 GAB-N-BA-e-1315
Dimensions:
2 Basic Information (General)
2.1 Proper 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
plate. 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“ in the balance.
(Example: Slowly draining fluids from a container on the balance.)
Do not leave permanent load on the weighing plate. 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.

GAB-N-BA-e-1315 7
2.3 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the described uses
The appliance is modified or opened
Mechanical damage or damage by media, liquids, natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
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.
Versions in other languages are non-binding translations.
The only binding version is the original document in German.
3.2 Personnel training
The appliance may only be operated and maintained by trained personnel.

8 GAB-N-BA-e-1315
4 Transportation & 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 transport securing devices. (see chapter 5.2)
Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.
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.

GAB-N-BA-e-1315 9
Therefore, observe the following for the installation site:
Place scales on a stable, even 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, vapors 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 charge of goods to be weighed or weighing container.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or remove
source of interference.

10 GAB-N-BA-e-1315
5.2 Unpacking/installation
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
Ensure that transport guard has been removed
(only existing in 6 kg models)
To loosen the transport guard screw out transport screw [1] anticlockwise.
For transportation screw down the transport screw till to the stop in clockwise
direction.
1