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KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instruct ions
Electronic Moisture Analyzer
KERN DLB_A
Version 1.0
04/2011
GB
DLB_A-BA-e-1110
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2 DLB_A-BA-e-1110
GB
KERN DLB_A
Version 1.0 04/2011
Operating instructions
Electronic Moisture Analyser
Contents
1 Technical data .................................................................................................... 4
2 Appliance overview ............................................................................................ 6
2.1 Keyboard and display overview ................................................................................................... 9
3 B as ic Information (General) ............................................................................ 10
3.1 Proper use .................................................................................................................................... 10
3.2 Improper Use ................................................................................................................................ 10
3.3 Warranty ....................................................................................................................................... 10
3.4 Monitoring of Test Resources .................................................................................................... 10
3.5 Danger Information ...................................................................................................................... 11
4 B asic S afety Precautions ................................................................................ 12
4.1 Pay attention to the ins tructions in the Operation Manual ..................................................... 12
4.2 Personnel training ....................................................................................................................... 12
5 Transport and storage ..................................................................................... 12
5.1 Testing upon acceptance ........................................................................................................... 12
5.2 Packaging / return transport ....................................................................................................... 12
6 Unpacking, S etup and C ommis s ioning.......................................................... 12
6.1 Installation Site, Location of Use ............................................................................................... 12
6.2 Unpacking and erection .............................................................................................................. 14
6.2.1 Scope of delivery ........................................................................................................................... 15
6.3 Mains connection ........................................................................................................................ 15
6.4 Connection of peripheral d evices .............................................................................................. 16
6.5 Initial Commissioning ................................................................................................................. 16
7 Weighing ........................................................................................................... 17
8 Adjus tment ....................................................................................................... 18
8.1 Adjust balance ............................................................................................................................. 18
8.2 Calibrate / adjust tem p erature .................................................................................................... 19
8.2.1 Calibrate temperature .................................................................................................................... 21
8.2.2 Adjust temperature ........................................................................................................................ 22
9 Appliance configuration .................................................................................. 23
9.1 Baud rate ...................................................................................................................................... 25
9.2 Auto Zero ...................................................................................................................................... 26
9.3 Filter .............................................................................................................................................. 28
9.4 Standstill control display ............................................................................................................ 29
9.5 Display backgr o u n d illumination ............................................................................................... 30
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DLB_A-BA-e-1110 3
10 Operator menu – moisture analysis ................................................................ 31
10.1 How to implement drying .............................................................................................................32
10.1.1 Moisture analysis with drying program PrG1 – PrG5 .................................................................33
10.1.2 Moisture analysis with drying program PrG time ........................................................................37
10.1.3 Moisture analysis with drying program PrG Auto Mode .............................................................40
10.2 Save the drying programs PrG1, PrG2, PrG3, PrG4, PrG5 .......................................................44
11 R S 232C interface ............................................................................................. 46
11.1 Technical data ...............................................................................................................................46
11.2 Pin allocation of the output plug ................................................................................................46
11.3 Menu settings „Serial“ .................................................................................................................47
11.3.1 Printout examples (YKB-01N) ....................................................................................................48
12 General information concerning mois ture analysis ...................................... 49
12.1 Application ....................................................................................................................................49
12.2 Basics ............................................................................................................................................49
12.3 Adjustment to existing measuring method ................................................................................49
12.4 Preparing a sample.......................................................................................................................50
12.5 Sample material ............................................................................................................................51
12.6 Sample size / originally weighted in quantity ............................................................................51
12.7 Drying temperatur e.......................................................................................................................52
12.8 Recommendations / Guidelines ..................................................................................................52
13 E rror mess ages ................................................................................................. 56
14 S ervice, maintenance, dispos al ....................................................................... 57
14.1 Cleaning.........................................................................................................................................57
14.2 Service, maintenance ...................................................................................................................57
14.3 Disposal .........................................................................................................................................57
15 Ins tant help ........................................................................................................ 58
16 Declaration of conformity ................................................................................ 59
17 S hort ins truc tions for mois ture analys is ........................................................ 60
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1 Technical data
Data DLB 160-3A
Radiator Halogen (1 x 400 W)
Temperature range
35°C - 160°C
Choice of steps at 1°C
Maximum load (Max) 160 g
Warm-up time 120 min
Minimum for drying 0.5 g
Readability (d)
Weighing mode 0.001g
Moisture analysis mode 0.01 %
Reproducibility
Weighing mode 0.001g
Moisture analysis mode
Weighed in quantity
10 g: 0.03 %
Linearity ± 0.003 g
Stabilization time (typical) 4 sec.
Recommended adjustment
weight, not added (class)
100g (E2)
Environmental conditions
• 5°C….+40°C ambient temperature
• 45% - 75% air humidity non-condensing
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Shutoff criterion
1. Time mode
Drying is finished after the set time, adjustable 1 – 99
minutes.
2. Auto mode
Drying is completed, when the set weight value per
time unit is lower than the nominal value,
0.1 – 9.9 % loss of weight adjustable.
Sample dishes included Ø 100 mm
Result display [g] residual weight
[%] moisture
[%] dry mass:
ATRO [%] = Start weight : Residual weight x 100%
Internal memory 5 memory locations for drying programs
Interface RS232
Dimensions
Housing 210 x 340 x 225 mm
Available
drying room
Ø 100 mm, 20 mm high
Net weight
4.2 kg
Electric Supply
230V AC 50Hz
Mains adapter
9V AC, 1000mA
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2 Appliance overview
Pos. Description
1 Foldable hood
2 Temperature sensor
3 Sample dish
4 Heating top
5 Balance
6 Display
7 Keyboard
8 Levelling screw
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1. Plug-in connection cable „Balance / Heating top“
2. Connection net adapter „Balance“.
3. Current supply „Heating top“.
4. RS 232 interface
5. Plug-in connection cable „Balance / Heating top“
6. Main switch „Heating top“
7. Adjustable foot screws
3
6
4
5 2 7
1
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8. Housing screws
9. Housing screws (for access remove the foot screws)
10. Adjustable foot screws
11. Rigid foot screw
9 8 11
10
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2.1 Keyboard and display overview
Display Description
Zero indicator
]
Stability display
%
Display of percentage
Status „Weighted in quantity sample“
H
Drying process active
g
Gram display
Key Description Description
MENU button/
Short key pressing
Long time pressed button
until the acoustic signal
gets mute
• Invoke user menu
• Switch over display of
result
• Invoke / exit
configuration
menu
Navigation button
• Select menu items – scroll fo rward
STOP
ON/OFF button
• Complete drying
• Turn on/off
• Exit user menu
CAL button/
• Adjustment
Navigation button
• Select menu items – scroll backward
START
PRINT button
• Start drying
• Calculate weighing data via interface
Navigation button
• Confirm / store settings
TARE button
• Taring
• Zeroing
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3 Basic Information (General)
3.1 Proper use
The device purchased by you is designed for a fast and reliable determination of
material moisture in liquid, porous and solid materials by applying the method of
thermogravimetrics.
3.2 Improper Use
Impacts and overloading exceeding the stated maximum load (max) of the device,
minus a possibly existing tare load, must be strictly avoided.
This could damage the instrument.
Never operate device in explosive environment. The serial version is not explosion
protected.
Changes to the unit's design are not permitted. This may lead to incorrect weighing
results, safety-related faults and destruction of the appliance.
The unit may only be operated in accordance with the described default settings. Other
areas of use must be released by KERN in writing.
3.3 Warranty
Loss of warranty due to
• Our conditions in the operation manual are ignored
• The appliance is used outside the described uses
• The appliance is modified or opened
• mechanical damage and damage caused by media, liquids
• natural wear and tear
• The appliance is improperly set up or incorrectly electrically connected
• The measuring system is overloaded
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the moisture
analyser 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.
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3.5 Danger Information
Individual parts of the case (e. g. the ventilation grids) may heat up considerably during
operation. For this reason, please touch the device only at the designated handles.
Sample materials developing aggressive vapours (e. g. acids) may cause corrosion
problems on some parts of the device. The moisture meters should mainly be used for
drying aqueous substances. Explosion prone, flammable samples must not be
analysed using the moisture meter.
Do not open or touch drying chambers during the drying
process as the device develops very high temperatures. Even
after finishing the measurement the appliance remains hot.
• Careful when removing the sample. The sample itself, the
sample dish and the heating unit may be very hot.
• Do not use the moisture meter for analysing explosion prone,
easily flammable samples.
• Do not operate the humidity analyser in areas with hazard of
explosion
• Sample materials emitting toxic substances must be dried with
a special extraction system in place. Create an environment
that prevents the inhalation of vapours hazardous to health.
• Do not place combustible materials on, under or next to the
device.
• Ensure that there is sufficient empty space around the device in
order to prevent heat accumulation (distance to device 20 cm,
above it 1m).
• Make sure that liquids do not get in contact with the interior of
the device or the connections at the rear of the device.
If you spill liquid on the device, disconnect it immediately.
Afterwards do not operate the appliance and have it checked
by a competent KERN stockist before any further use.
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4 Basic Safety Precautions
4.1 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
appliances.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transport and storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the appliance
itself when unpacking for possible visible damage.
5.2 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.
6 Unpacking, Setup and Commissioning
6.1 Installation Site, Location of Use
The unit is designed to achieve reliable weighing results under normal conditions of
use.
You will work accurately and fast, if you select the right location for the appliance.
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On the installation site observe the following:
1. Avoid extreme heat as well as temperature fluctuation
caused by installing next to a radiator or in the direct
sunlight;
2. Remove explosion prone, easily flammable material in the
immediate vicinity. Emerging vapours, sample dish and all
parts of the sample chamber are hot!
3. Place the device on a firm, level surface.
4. 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.
5. Avoid static charging of the material to be weighed,
weighing container and windshield
6. Avoid jarring during weighing.
7. Protect the appliance against high humidity, vapours and
dust,
8. 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.
9. Protect the device against direct draughts due to open
windows and doors.
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6.2 Unpacking and erection
Take the appliance carefully out of its packaging, remove the plastic jacket and
install it at the designated work space.
The appliance is supplied part-assembled. Immediately after unpacking check if the
delivered items are complete. Assemble the separate component parts according to
their sequence.
1.
2.
3.
4.
1. Put cover into the weighing chamber.
2. Put on the dish retainer carefully.
3. Position removal aid in a way that the handle fits under the groove of the
cover.
4. Put sample dish on the dish holder.
5. Level the appliance with the help of the foot screws until it is standing evenly.
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6.2.1 Scope of de livery
Serial accessories:
• Moisture analyzer, see chap. 2
• 10 sample dishes
• Power cable
• Mains adapter
• Connection cable „Balance / Heating top“
• Operating instructions
6.3 Mains connection
1. Power is supplied to the balance via the external power unit. 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.
After connection to the power supply the balance will carry out a self-test. The
balance changes into stand-by mode.
To switch on press the ON/OFF button. As soon as the weight display appears,
the balance is ready for weighing.
2
1
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3
2. Power supply to the heating top is provided via the supplied mains cable. Do not
connect the appliance to the power grid unless the information on the appliance
(sticker) matches the local mains voltage.
To switch on, press the main switch on the rear side of the appliance.
3. Attach the connection cable balance / heating top.
The appliance must be connected to a standard socket with earth terminal. Do not
eliminate the protective effect by using an extension lead without earth terminal. For
power supplies from power grids without earth terminals call a specialist to establish
equivalent protection according to the relevant installation regulations.
6.4 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, always disconnect the moisture analyser from the power supply.
Only use accessories and peripheral devices by KERN, as they are ideally tuned to the
appliance.
6.5 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. During this warming up
time the balance must be connected to the power supply (mains, accumulator or
battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
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7 Weighing
Start-up
1. In stand-by mode (see chap. 6.3) press ON/OFF button.
As soon as the weight display appears, the balance is
ready for weighing.
Switching Off
2. Press the ON/OFF button, the balance returns into standby mode.
Simple weighing
3. Place goods to be weighed on balance.
4. Wait until the stability display appears []
5. Read weighing result.
Taring
6. Place the weighing box and press the TARE button.
„0-t“ is displayed.
7. After standstill control the zero display appears.
The weight of the container is now internally saved.
8. Weigh the material, the net weight will be indicated.
After removing the weighing container, the weight of the
weighing container appears as negative display.
The tare weight is saved until it is deleted. Remove the load
from the balance and press the TARE button. „0-t“ is
displayed, wait until the zero display appears.
The tare procedure can be repeated as many times as
necessary, for example with initial weighing of several
components for a mix (add-on weighing). The limit is
reached when the total weighing range capacity is full.
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8 Adjustment
8.1 Adjust balance
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 for the first commissioning, after each change of location
as well as in case of fluctuating environment temperature. To receive accurate
measuring values it is also recommended to adjust the balance periodically in weighing
operation.
• Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization.
• Carry out adjustment with placed sample dish. Ensure that no objects are within
the sample dish.
• Weight value of the required adjustment weight see chpt. 1 “Technical
specifications“:
In weighing mode press the CAL button.
Wait until the weighed value for the required adjustment weight appears
flashing.
Example 100 g
During the flashing display put the required adjustment weight carefully in the
centre of the sample dish. The flashing display disappears.
After successful adjustment the balance automatically returns to weighing mode.
Take away adjustment weight
In case of an adjustment error (e.g. objects on the weighing plate) the display will
show an error message, repeat adjustment.
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8.2 Calibrate / adjust temperature
We recommend sometimes to check the temperature value of the device using the
optional temperature calibrating set DLB-A01. Before you do this, allow the device to
cool down for at least 3 hours after the last heating phase.
Preparation:
Remove the separate component parts „sample dish“ according to their sequence
1.
2.
3.
4.
Install the temperature-calibration set acc. to fig..
Switch-on the heating top on the rear side.
Close cover of the heating top
On the temperature calibration set switch-on the digital thermometer by the ON
button.
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Invoke service function:
In weighing mode press the MENU button, the menu item „Therm“ will be
displayed.
Confirm by pressing the PRINT button. Press repeatedly the MENU button until
„Service“ will be displayed.
Keep pressed the PRINT button for 2 sec. Select the desired settings by pressing
the MENU button
Temperature calibration
Temperature adjustment
Settings of lamp
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8.2.1 Calibrate temperature
During temperature calibration only a check is carried out, i.e. no values are changed.
Invoke service function „Tmp test“, see chap. 8.2.
Confirm by pressing the PRINT button. The current setting will be displayed. Use
the navigation buttons to select the temperature during the check, available
35- 160°C.
Confirm using the PRINT button, the appliance heats up to the set temperature.
After approx. 15 minutes compare the temperature displayed on the thermometer
with that of the moisture analyzer. If the two values do not match, we recommend
a temperature adjustment, see chap. 8.2.2.
Use the ON/OFF button to finish the calibration.
Use the ON/OFF button to return into weighing mode.
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8.2.2 Adjust temperature
The temperature is measured at two selectable points and it is possible to correct it
there.
Invoke service function „Tmp Adj“, see chap. 8.2.
Confirm by pressing the PRINT button. The current setting for the first
temperature point is displayed. Or leave it on factory setting 80°C or select a
desired temperature with the help of the navigation buttons (available 50130°C).
Confirm with the PRINT button, the first heat-up phase is started. The remaining
time is displayed.
Temperature calibration of first point will take 15 min. Compare the temperature
displayed on the thermometer with that of the moisture analyzer. If the two values
do not match, correct them using the navigation buttons and confirm with the
PRINT button
The current setting for the second temperature point is displayed. Or leave it on
factory setting 150°C or select the desired temperature with the help of the
navigation buttons . The second temperature point has to be at least 30°C
over the first one, max. 160°C.
Confirm with the PRINT button, the second heat-up phase is started. The
remaining time is displayed.
Temperature calibration of the second point will take 15 min. Compare the
temperature displayed on the thermometer with that of the moisture analyzer. If
the two values do not match, correct with the help of the navigation buttons .
Confirm by pressing the PRINT button. The adjustment is completed, the
appliance returns into the menu. Use the ON/OFF button to return into weighing
mode.
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9 Appliance configuration
Via the configuration menu the appliance can be individually adapted to your weighing
needs.
Navigation in the menu
Access to menu In weighing mode press the MENU button and keep it pressed
until the acoustic signal gets mute.
Release the button, the first menu point „bAud rt“ is displayed.
How to select
menu items
Using the MENU button the individual menu items can be
selected one after the other.
Scroll forward using navigation button (MENU button)
Scroll backward using navigation button (CAL button)
Change settings Acknowledge selected menu item using PRINT button, the
current setting is displayed. Each time the navigation buttons
are pressed the next setting will be displayed.
Scroll forward using navigation button (MENU button)
Scroll backward using navigation button (CAL button)
Save settings Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings
in the menu or go back to menu mode as follows.
Exit menu/
back to
weighing mode
Press the MENU button and keep it pressed until the acoustic
signal gets mute. The balance returns automatically into
weighing mode.
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Menu overview
Menu item
Display
Selection
Description
Baudrate
(siehe Kap. 9.1)
bAud rt
br 1200
br 2400
br 4800
br 9600
Automatic zero point
correction (see chap. 9.2)
Auto 0
Au0 OFF
Auto Zero switched off
Au0 1
Auto Zero range ± ½ digit
Au0 2
Auto Zero range ± 3 digits
Au0 3
Auto Zero range ± 7 digits
Au0 3E
Auto Zero range ± 7 digits in the
whole weighing range
Filter
(see chap. 9.3)
FiltEr
Filt 1
Setting for dispensing
Filt 2
Sensitive and fast, very quiet
set-up location.
Filt 3
Robust but slow, busy set-up
location.
Stability display
(see chap. 9.4)
StAbil
Stab 1
Standstill control fast / very quiet
set-up location
Stab 2
Standstill control fast + exact/
quiet set-up location
Stab 3
Standstill control exact /very setup location.
Background illumination
of the display (see chap.
9.5)
Blt
on
Background illumination on
off
Background illumination off
Auto
Backlighting automatically
switched off 3 seconds after
achieving stable weighing value.
Changes in weight or pressing
of keys will automatically result
in backlight switching on again.
End
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Description of individual menu items:
9.1 Baud rate
In weighing mode press the MENU button and keep it pressed until the acoustic
signal gets mute.
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired setting.
Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings in the menu or go
back to weighing mode as follows.
Press the MENU button and keep it pressed until the acoustic signal gets mute.
The balance returns automatically into weighing mode.
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9.2 Auto Zero
Under this menu item the automatic zero point correction can be switched on or off. In
switched-on-state the zero point is automatically corrected at drift or when dirty.
Note:
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“. (e.g.
slow flow of liquids from a container placed on the balance, evaporating processes).
When apportioning involves small variations of weight, it is advisable to switch off this
function.
In weighing mode press the MENU button and keep it pressed until the acoustic
signal gets mute.
Press MENU button repeatedly
Acknowledge using PRINT button, the current setting is displayed.
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Use the navigation buttons to select the desired setting.
Au0 OFF = Auto Zero switched off
Au0 1 = Auto Zero range ± ½ digit
Au0 2 = Auto Zero range ± 3 digits
Au0 3 = Auto Zero range ± 7 digits
Au0 3E = Auto Zero range ± 7 digits in the whole weighing range
Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings in the menu or go
back to weighing mode as follows.
Press the MENU button and keep it pressed until the acoustic signal gets mute.
The balance returns automatically into weighing mode.
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9.3 Filter
This menu item allows the balance to be set according to specific ambient conditions
and measuring purposes.
In weighing mode press the MENU button and keep it pressed until the acoustic
signal gets mute.
Press MENU button repeatedly
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired setting.
Filter 1: Setting for dispensing
Filter 2: The balance reacts quickly and in a sensitive manner, very quiet set-up
location.
Filter 3: The balance reacts slowly and in a robust manner, busy set-up location
Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings in the menu or go
back to weighing mode as follows.
Press the MENU button and keep it pressed until the acoustic signal gets mute.
The balance returns automatically into weighing mode.
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9.4 Standstill control display
In weighing mode press the MENU button and keep it pressed until the acoustic
signal gets mute.
Press MENU button repeatedly
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired setting.
Stab 1: Standstill control fast / very quiet set-up location
Stab 2: Standstill control fast + exact / quiet set-up location
Stab 3: Standstill control exact / very set-up location.
Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings in the menu or go
back to weighing mode as follows.
Press the MENU button and keep it pressed until the acoustic signal gets mute.
The balance returns automatically into weighing mode.
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9.5 Display background illumination
In weighing mode press the MENU button and keep it pressed until the acoustic
signal gets mute.
Press MENU button repeatedly
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired setting.
ON
Background illumination on
OFF
Background illumination off
Auto
Backlighting automatically switched off 3 seconds after achieving stable
weighing value. Changes in weight or pressing of keys will automatically
result in backlight switching on again
Take over selection using the PRINT button.
Weighing balance returns to menu. Either make more settings in the menu or go
back to weighing mode as follows.
Press the MENU button and keep it pressed until the acoustic signal gets mute.
The balance returns automatically into weighing mode.
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10 Oper a t or menu – moisture analysis
Menu selection:
PrG 1
The appliance offers the possibility to occupy and to save 5
different drying programs (Prg1, Prg2, Prg3, Prg4, Prg5) with
individual drying parameters which may be invoked and started
whenever necessary.
PrG 2
PrG 3
PrG 4
PrG 5
PrG time
Time drying mode:
Drying is completed after the set time, adjustable:
Drying time 1 – 99 minutes
Temperature 35 – 160 °C
PrG Auto
Autostop drying mode:
Drying is completed, when a weight constancy has been
reached.
Options:
Weight loss 0.1 - 9.9%
Temperature 35 – 160 °C
Short instructions for moisture analysis, see chap. 17
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10.1 How to imple m ent drying
Place removal aid with empty sample dish on the sample dish retainer. Make sure that
the sample dish is resting flat on the sample dish retainer. Use the sample retainer at all
times as it allows safe working and prevents burns.
Prior to start the moisture analysis select a suitable drying program.
In weighing mode press the MENU button, „Therm“ is displayed.
Acknowledge using PRINT button, „Measure“ is displayed.
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired drying program.
s. chap. 10.1.1
s. chap. 10.1.2
s. chap. 10.1.3
Page 33
DLB_A-BA-e-1110 33
10.1.1 Moisture analysis with drying program PrG1 – PrG5
After invoking a drying program PrG1, PrG2, PrG3, PrG4 or PrG5 previously stored
(see chap. 10.2) you are queried whether the preheating stage „PrH“ shall be
connected.
If the preheating stage is added, the appliance will heat up to the set
temperature before starting the drying.
Confirm the selected drying program, e.g. PrG1 (see chap. 10.1) using the PRINT
button. The query whether the preheating stage „PrH“ shall be connected, will
appear.
Use the navigation buttons to select the desired setting.
PrH no = preheating stage switched off
PrH yes = preheating stage connected
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34 DLB_A-BA-e-1110
Start of moisture analysis:
Preheating stage enabled
Preheating stage disabled
Confirm by the PRINT button, close
the sample chamber and wait for the
warm-up phase.
After reaching the set temperature
„ready“ will be displayed.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
Page 35
DLB_A-BA-e-1110 35
During drying the display can be switched over by repeated pressing of the
MENU button.
Moisture [%] = loss of weight (GV) from start weight (SG)
0 – 100%
Dry mass [%] = residual weight (RG) of SG
100% - 0 %
ATRO [%] = SG : RG x 100%
100 – 999 %
Current temperature
Remaining time
Using the ON/OFF button drying can be finished at any moment if required.
When drying is finished, you will hear an acoustic signal and the heating will be
shut off. The indicator „OK“ displays the measuring result. Use the MENU
button to switch over into the result display.
Moisture [%]
Dry mass [%]
ATRO [%]
Residual weight in „g“
Page 36
36 DLB_A-BA-e-1110
When an optional printer is connected, the measurement log will be edited
independently on the settings in the menu, see chap. 11.3
For further measurement press the ON/OFF button, the appliance returns into
the menu.
For exiting the menu press anew the ON/OFF button, the appliance returns into
weighing mode
Open the sample chamber and remove the sample with the help of the removal
aid.
Caution: Caution! Sample dish and all parts of the sample chamber are hot!
Page 37
DLB_A-BA-e-1110 37
10.1.2 Moisture analysis with drying program PrG time
After setting the drying time (available 1 -99 Min) and the drying temperature (available
35 – 160°C), moisture will be analyzed with the help of these two parameters.
Confirm by pressing the PRINT button. The currently set drying time is displayed.
Use the navigation buttons to select the desired setting.
Confirm by pressing the PRINT button. The currently set drying temperature is
displayed.
Use the navigation buttons to select the desired setting.
Confirm by pressing the PRINT button. The query whether the preheating stage
„PrH“ shall be connected, will appear.
Use the navigation buttons to select the desired setting.
PrH no = preheating stage switched off
PrH yes = preheating stage connected
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38 DLB_A-BA-e-1110
Start of moisture analysis:
Preheating stage enabled
Preheating stage disabled
Confirm by the PRINT button, close
the sample chamber and wait for the
warm-up phase.
After reaching the set temperature
„ready“ will be displayed.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
Page 39
DLB_A-BA-e-1110 39
During drying the display can be switched over by repeated pressing of the
MENU button.
Moisture [%] = loss of weight (GV) from start weight (SG)
0 – 100%
Dry mass [%] = residual weight (RG) of SG
100% - 0 %
ATRO [%] = SG : RG x 100%
100 – 999 %
Current temperature
Remaining time
Using the ON/OFF button drying can be finished at any moment if required.
When drying is finished, you will hear an acoustic signal and the heating will be
shut off. The indicator „OK“ displays the measuring result. Use the MENU
button to switch over into the result display.
Moisture [%]
Dry mass [%]
ATRO [%]
Residual weight in „g“
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40 DLB_A-BA-e-1110
When an optional printer is connected, the measurement log will be edited
independently on the settings in the menu, see chap. 11.3
For further measurement press the ON/OFF button, the appliance returns into
the menu.
For exiting the menu press anew the ON/OFF button, the appliance returns into
weighing mode
Open the sample chamber and remove the sample with the help of the removal
aid.
Caution: Caution! Sample dish and all parts of the sample chamber are hot!
10.1.3 Moisture analysis with drying program PrG Auto Mode
Drying will be completed, when the set loss of weight (available
0.1 - 9.9% humidity) per time unit (60 sec) is less than the nominal value.
Confirm by pressing the PRINT button. The currently set nominal value is
displayed.
Use the navigation buttons to select the desired setting.
Confirm by pressing the PRINT button. The currently set drying temperature is
displayed.
Use the navigation buttons to select the desired setting.
Confirm by pressing the PRINT button. The query whether the preheating stage
„PrH“ shall be connected, will appear.
Use the navigation buttons to select the desired setting.
PrH no = preheating stage switched off
PrH yes = preheating stage connected
Page 41
DLB_A-BA-e-1110 41
Start of moisture analysis:
Preheating stage enabled
Preheating stage disabled
Confirm by the PRINT button, close
the sample chamber and wait for the
warm-up phase.
After reaching the set temperature
„ready“ will be displayed.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
Confirm by pressing the PRINT
button. The weight display and the
indicator „“ are displayed.
If required, tare by using TARE
button.
Put prepared sample (see chap. 12.4)
in the sample dish and close the
sample chamber.
Wait for stability display, then press
the PRINT button. Drying is started.
The result display appears.
The indicator „H“ displays the active
drying process.
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42 DLB_A-BA-e-1110
During drying the display can be switched over by repeated pressing of the
MENU button.
Moisture [%] = loss of weight (GV) from start weight (SG)
0 – 100%
Dry mass [%] = residual weight (RG) of SG
100% - 0 %
ATRO [%] = SG : RG x 100%
100 – 999 %
Current temperature
Remaining time
Using the ON/OFF button drying can be finished at any moment if required.
When drying is finished, you will hear an acoustic signal and the heating will be
shut off. The indicator „OK“ displays the measuring result. Use the MENU
button to switch over into the result display.
Moisture [%]
Dry mass [%]
ATRO [%]
Residual weight in „g“
Page 43
DLB_A-BA-e-1110 43
When an optional printer is connected, the measurement log will be edited
independently on the settings in the menu, see chap. 11.3
For further measurement press the ON/OFF button, the appliance returns into
the menu.
For exiting the menu press anew the ON/OFF button, the appliance returns into
weighing mode
Open the sample chamber and remove the sample with the help of the removal
aid.
Caution: Caution! Sample dish and all parts of the sample chamber are hot!
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44 DLB_A-BA-e-1110
10.2 Save the drying programs PrG1, PrG2, PrG3, PrG4, PrG5
The appliance has more than 5 memory locations for often used drying programs.
For every drying program the respective drying parameters are stored,
which may be invoked and started according to needs (see chap. 10.1.1)
In weighing mode press the MENU button, „Therm“ is displayed.
Acknowledge using PRINT button, „Measure“ is displayed.
Use the navigation buttons „PrG Set“
Confirm by pressing the PRINT button.
Use the navigation buttons to select the desired drying program.
Page 45
DLB_A-BA-e-1110 45
Confirm with the PRINT button, the currently set drying mode will be displayed.
Use the navigation buttons to select the desired drying mode.
Acknowledge using PRINT button, the current setting is displayed. Enter the
drying parameters as specified in chap. 10.1.2 (PrG time) and chap. 10.1.3 (PrG
Auto).
Confirm using the PRINT button, the query „Save no / yes“ appears.
Use the navigation buttons to select the desired setting.
Do not save
store
Confirm using the PRINT button, the appliance returns into the menu.
For exiting the menu press anew the ON/OFF button, the appliance returns into
weighing mode.
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46 DLB_A-BA-e-1110
11 RS 232C interface
The moisture analyser is typically equipped with a RS 232C interface.
The following conditions must be met to provide successful communication between the
moisture analyser and the printer.
• Use a suitable cable to connect the moisture analyser to the interface of the
printer. Faultless operation requires an adequate KERN interface cable.
• Communication parameters (baud rate, bits and parity) of moisture analyser and
printer must match.
• Data may only be transferred in moisture analysis mode.
The measurement data may be edited according to the setting in the menu item „Serial“
(see chap. 11.3) or automatically or by pressing the PRINT button via the interface.
11.1 Technical data
8-bit ASCII Code
8 data bits, 1 stop bit, no parity bit
Baudrate selectable from 1200 - 9600 Baud , see chap. 9.1.1
For operation with interface faultless operation is only ensured with the correct
KERN – interface cable (max. 2m)
11.2 Pin allocation of the output plug
9
8
7
6
5
4
3
2
1
Pin 2: Tx Signal
Pin 3: Rx Signal
Pin 5: GND
Page 47
DLB_A-BA-e-1110 47
11.3 Menu settings „Serial“
In weighing mode press the MENU button, „Therm“ is displayed.
Acknowledge using PRINT button, „Measure“ is displayed.
Use the navigation buttons to select „Serial“
Acknowledge using PRINT button, the current setting is displayed.
Use the navigation buttons to select the desired setting.
Manu Prt Not documented
Auto Prt Not documented
Manu PC
Data output after pressing the PRINT button
Auto PC Automatic data output
Weig PC Continuous data output residual weight
Manu T50 Not documented
Auto T50 Not documented
Select using the PRINT button, the appliance returns into the menu.
For exiting the menu press anew the ON/OFF button, the appliance returns into
weighing mode
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48 DLB_A-BA-e-1110
11.3.1 Printout examples (YKB-01N)
1. Menu setting „Serial““Manu PC“
Printout occurs when drying is completed by pressing the PRINT button.
Temp.
130
°C
Drying temperature
Time:
5
Min
Drying time
W.Start
19.998
g
Start weight
W-End:
19.994
g
Residual weight
Moist.:
0.02
%
Moisture [%]
2. Menu setting „Serial““Auto PC“
The first part of the printout occurs automatically when drying starts
Temp.
130
°C
Drying temperature
Time
5
Min
Drying time
W.Start
19.998
g
Start weight
The second part of the printout occurs automatically when drying is completed
W-End:
19.994
g
Residual weight
Moist.:
0.02
%
Moisture [%]
Page 49
DLB_A-BA-e-1110 49
12 General informati on c onc erning moisture analysis
12.1 Application
In all cases where moisture is added to or removed from products, a fast determination
of the moisture content is of enormous importance. For countless products the moisture
content is not only a quality feature but also an important cost factor. Very often fixed
limits for moisture content apply to the trade in industrial or agricultural goods as well as
chemical or food products which are defined by terms of delivery and general
standards.
12.2 Basics
Moisture does not only mean water but includes all substances that evaporate when
heated up. In addition to water this includes,
- Fats
- Oils
- Alcohol
- Solvents
- etc...
There are various methods to analyse moisture in a product.
KERN MLB uses a method called thermogravimetrics. In accord with this method, the
sample is weighed before and after heating, determining the material moisture by
looking at the difference.
The conventional drying chamber method follows the same principle, with the exception
that this method requires a considerably longer measuring period. . In accord with the
drying chamber method, the sample is heated from the outside to the inside by a hot air
current, so as to remove the moisture. The radiation applied in the KERN DLB
penetrates mainly the sample in order to be transformed inside it into heat energy that
is, warming from the inside to the outside. A minor amount of radiation is reflected by
the sample, a reflection that is less in dark samples than in light-coloured ones. The
depth of penetration of the radiation depends on the permeability of the sample. In
samples of low permeability the radiation only penetrates the outer layers of the
sample, possibly resulting in imperfect drying, incrustation or burning. For that reason
the preparation of a sample is of great importance.
12.3 Adjustment to existing measuring method
Quite frequently the KERN DLB replaces a different drying method (such as a drying
chamber) as the KERN DLB achieves shorter measuring times during a simplified
operation. For that reason the conventional measuring method must be matched to the
KERN DLB in order to achieve comparable results.
• Carry out parallel measurement
Lower temperature setting for KERN DLB than drying chamber method
• Result of KERN DLB does not match reference
- Repeat measurement with changed temperature setting
- Vary shutoff criterion
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50 DLB_A-BA-e-1110
12.4 Preparing a sample
Prepare one sample at a time for measuring. This prevents the sample from
exchanging moisture with its surroundings. If several samples have to be taken at the
same time, they should be packed in airtight boxes so that they do not undergo
changes during storage.
To receive reproducible results, spread the sample thinly and evenly on a sample dish.
Patchy spreads will produce inhomogeneous heat distribution in the sample to be dried
resulting in incomplete drying and increased measuring time. Sample clusters generate
increased heating of the upper layers resulting in combustion or incrustation. The high
layer thickness or possibly arising incrustation makes it impossible for the moisture to
escape from the sample. Due to this residual moisture, measured results calculated in
this way will not be comprehensible or reproducible.
Preparing a sample from solids:
• Spread powdery or grainy samples evenly on the sample dish.
• Grind coarse samples using a mortar or a shredder. When grinding the sample avoid
any heat supply as this may cause loss of humidity.
Preparing a sample from liquids:
For liquids, pastes or melting samples we recommend to use a glass fibre filter. The glass
fibre filter has the following advantages:
• Even distribution thanks to capillary attraction
• no formation of droplets
• fast evaporation due to a greater surface
Page 51
DLB_A-BA-e-1110 51
12.5 Sample material
Easy to determine are usually samples with the following characteristics:
- Grainy to powdery, pourable solids
- Thermally stable materials, emitting the moisture to be determined easily without
other substances evaporating at the same time
- Liquids that vaporize to leave a dry substance without developing a film
Difficult to determine may be samples that are:
- Glutinous or sticky
- Become incrusted easily or tend to form a film
- Decompose easily under the influence of heat or emit various elements
12.6 Sample size / originally weighted in quantity
Drying times, as well as achievable accuracy, are significantly influenced by sample
distribution. In the course of this arise two opposed requirements:
The lighter the originally weighted in quantity, the easier it is to achieve shorter drying
times.
However, the heavier the originally weighted in quantity, the more accurate a result.
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52 DLB_A-BA-e-1110
12.7 Drying temperature
Bear in mind the following factors when setting the drying temperature:
Surface of the sample:
Compared with powdery or grainy samples, liquid and spreadable samples have a
smaller surface for the transmission of heat energy.
The use of a glass fibre filter improves the heat application.
Colour of sample:
Light-coloured samples reflect more heat radiation than dark ones and therefore require
a higher drying temperature.
Availability of volatile substances:
The better and faster the water or other volatile substances can be disposed, the lower
a drying temperature is required. If water is difficult to get to (e. g. in synthetics), it has
to be calcined at high temperatures (the higher the temperature, the higher the water
vapour pressure).
Results equivalent to other moisture analysing methods (e. g. drying chamber) can be
achieved by experimentally optimising the setting parameters such as temperature,
heating level and shutoff criteria.
12.8 Recommendations / G uidelines
Prepare standard sample:
- Crush sample, as required, and spread it evenly in the aluminium dish.
Prepare special samples:
- For sensitive or hard to spread test materials (e. g. mercury) a glass fibre filter is
available for use.
- Apply the sample equally on the glass fibre filter and cover it with a second glass
fibre filter.
- The glass fibre filter is also useful as a protection when splashing materials are
dealt with (each splash falsifies the final result).
Page 53
DLB_A-BA-e-1110 53
Table of applications:
Material
Weight
Sample
(g)
Drying
temperature
( °C)
Drying
period
(approx.)
(min)
Moisture
(approx.)
Solid
body
%
(approx
.)
ABS (Novodur P2H-AT)
10
60
10
0,11
Accumulator lead
10
110
2,6
0,19
Acryl granulate
10-15
80
12
0,18
Activated carbon
10
80
9,8
13,33
Activated carbon
7,6
80
4,1
6,12
Sliced pineapple
5
110
14,4
6,71
Sliced apple (dry)
5-8
100
10-15
76,5
Sliced apple (humid)
5-8
100
5-10
7,5
Artesan powder
0,5
80
3,5
98,44
Aspartame granulate
0,5
105
3,4
96,84
Bath milk 3 80
27,4
83,87
Cotton seed
3-4
110
6,3
6,8
Blue-veined cheese
2
160
13,3
53,06
Body lotion
3
80
31,6
87,76
Beans
4,5
150
9,7
11,85
Butter
1,7
140
4,3
84,95
Acetyl cellulose
5,5-6
50
1,3
0,81
Chinese Virility powder
2,5-3
110
5,5
6,24
CN photographic paper
2
150
6,4
5,81
Cornflakes
2-4
120
5-7
9,7
Roof tile mass
2,5
160
10
81,74
Roof tile mass
7
160
20
81,74
Dialysis membrane
(Polyethes – polycarbonate)
0,5 80 2,2 7,85
Dialysis membrane
(Polyethes – polycarbonate)
0,5-0,7 80 2,0 7,86
Indoor sealing compound
3
160 7
64,04
Dispersion adhesive
1,5
140
9,5
55,69
Dispersion adhesive (watery)
2,5
155
7,2
43,77
Dolomite
10-12
160
6,1
0,06
Printer ink fluid
1,5
120
10
19,15
E-filter dust of waste
incineration
7-10 135 7 26,23
Peas, „danish yellow“
3,5
135
7,9
15,19
Peanut cores
2,8
100
4
1,97
Peanut cores
3
100 6 3,2
Refreshment candies
3-3,4
90
2,9
0,29
Dye powder
1,5
120
3,5
99,07
Fine ceramic mass
2,5
160 9
86,89
Film waste
8-9
60
1,2
0,4
River water
4
160
20
99,2
Fudge/sugar mass
5
130
20 8
Formaldehyde urea dispersion
2
155
7,6
34,07
Cottage cheese
1,4
70
15
41,03
Forage pellets
3-4
150
5,7
6,35
Dried beans
3-4
105 5 7,3
Dried peas
5-7
110
9,6
5,89
Dried carrots
5,5-6
120
3
4,92
Dried chicken dung
4
140
8
14,81
Dried corn
5-7
110
10
6,21
Glass powder
8-10
160
5
0,26
Page 54
54 DLB_A-BA-e-1110
Material
Weight
Sample
(g)
Drying
temperature
( °C)
Drying
period
(approx.)
(min)
Moisture
%
(approx.)
Solid
body
%
(approx.)
Setting lotion
0,01
145
9
98,76
Setting lotion (extra strong)
1
130
8
97,85
Hair styling gel
5
105
37,0
94,71
Oat flakes 2 105
5,6
9,35
Hazelnut cores
2,2
100
3,8 4
Hazelnut cores (peeled)
2,6
100
4,5
3,74
Hydranal sodium tatrate – 2
– hydrate
1,6 160 12 15,67
Yoghurt
2-3
110
4,5-6,5
86,5
Coffee 2 150
8
4,99
Coffee cream
2-3
130
6-8
78,5
Coffee seed
3,5-4
120
8
8,53
Cocoa
2,5
105
4
3,45
Cocoa seed
4-5
130
7,8
6,23
Limestone
12-14
160
5
0,05
Potato powder
2,5-3,0
130
5,8
12,46
Potato chips
3-4
106
7,5
6,9
Ketchup 2 120
18
74,44
Silica gel
9,5
115
4,5
0,63
Adhesive
2-5
136
6-8
54,3
Garlic, powder
2
100
7,3
5,36
Coal powder
4
160
3,4
2,11
Chalk (natural)
8
160
1,7
0,06
Crystal sugar
3
90
2,8
0,05
Synthetic resin dispersion
(diluted)
2 160 5,9 60,21
Latex
1-2
160
5,2
38,64
Latex LE1
3-5
125
10,8
46,58
Latex LE2
3-5
125
9,4
50,37
Latex O44
3-5
125
9,4
50,65
Lentils 4 135
5,4
12,49
Loam soil
10-15
160
5,5
9,89
Loam clay
2,5
160
14,5
80,75
Skim milk powder
4
90
5,5
3,67
Low fat curd cheese
1,2
130 8
18,5
Corn starch
2
160
5,2
89,1
Almonds (caramelised)
3,5
80
4,8
1,81
Almonds (natural)
2,5
100
5,3
4,19
Almonds „californian“
3
100
5,3
4,34
Margarine
2,2
160
4
19,15
Brick mass
7
160
20
80,13
Mayonnaise
1-2
138
10
56,5
Flour
8-10
130
4,5
12,5
Micronyle
7-8
60 8 0,4
Milk
2-3
120
6-8
88
Milk powder (MMP)
4,5
100
6,3
2,46
Milk powder (VMP)
4,5
100
5,5
2,56
Mozzarella
1,5
160
11,1
45,78
Multivitamin candies
3-3,4
115
3,3
0,4
Natural latex
1,4
160
5,3
42,56
Nougat mass
2,5
103
10
0,6
Noodle dough
0,55
160 5 12
Concentrated orange juice
2-3
115
13
52,1
Page 55
DLB_A-BA-e-1110 55
Material
Weight
Sample
(g)
Drying XXXX
temperature
( °C)
Drying
period
(approx.)
(min)
Moisture
%
(approx.)
Solid
body
%
(approx
.)
Paper
2-4
106
10
6,4
PA 6 (Ultramide B3WG5)
10
60
10
0,05
PA 6.6 (Ultramide B3WG5)
10
80
10
0,15
PBTP (Crastin SK645FR)
10
80
10
0,05
PC (Macrolon 2805)
10-12
80
15
0,08
PC/ABS (Babyblend T65MN)
9-11
80
10
0,12
Pepper, black, powder
2
85
8,8
7,97
PMMA (Plexiglass 6N)
10
70
10
0,12
Polypropylene
13
130
9
0,23
Polypropylene
3,3
120
2,2
0,09
Polystyrene sulfonic acid
Sodium salt solution
2-2,5 120 8,7 19,01
POM (Hostaform C9021))
10
80
10
0,13
PS (Polystyrene 168 N)
10
80
10
0,05
Purine 2 105
3,8
8,64
Curd 1 140 7
18
Curd cheese, „Fat curd cheese“
1,2
130 8
23
Silica sand
10-14
160
1,9
0,24
Raclette cheese
1,5
160
14,4
56,9
Canola seed
3-4
90
7,4
6,18
Rice (US parboiled)
3,5
105
12,5
10,98
Rye
4,5
150
11,5
10,72
Red wine
3-5
100
15-20
97,4
Sugar beet pulp pellets
4,5
150
8,6
11,77
Salt 2 100 3 4,9
Pretzel sticks
3-4
75
4,5
1,67
Sludge
11-12
130
90
80
Melted cheese
1,5
70
15
35,65
Chocolate
2,5
103
10
0,5
Chocolate powder
2-4
100 4 1,9
Chocolate water
2-3
90
10 6
Hogwash of kitchen waste
4-5
160
21
17,67
Lard
0,70
160
3,5
1,2
Shampoo 2 100
14,1
75,89
Soap 3 120
6
7,86
Mustard
2,5-3
80
19
34,69
Sesame seed
3
130
8
5,48
Soya bean flour
4,6
95
4,9
4,8
Soya beans, granulate
5
110
22,6
12,16
Bruised sunflower seed
3-3,5
100
4
5,92
Sunflower oil
10-14
138 2 0,1
Spaghetti 3 105
15,1
10,63
Rinsing agent
2
80
13,7
59,64
Dust
5-10
104
8-15
7,3
Starch derivative
2,5
150
12,3
30,29
Starch glue
1,5
100
8,9
17,96
Spread cheese
2,5-2,8
160
4,5
36,81
Soup
(instant product)
2-3 80 4,5-7 3
Page 56
56 DLB_A-BA-e-1110
Material
Weight
Sample
(g)
Drying
temperature
( °C)
Drying
period
(approx.)
(min)
Moisture
%
(approx.)
Solid
body
%
(approx.)
Tobacco
1,5
100
16
10,18
Tea, black 2 105 4 7,67
Pasta
1,5
120
8
10,64
Textile fibre
0,8-1,2
85
3,6
14,03
Theophylline
1,5
130
1,9
7,33
Thermoplastic PUR –
granulate
15-18 80 18 0,08
Walnut
2,8
100
5,6
3,5
Washing powder
2
160
12
7,32
Wheat spring water
2-3
90
10 6
Sausage casing
0,2
150
3,5
78,56
Toothpaste
2
100
7,7
34,28
Pulp
2,5
130
4,5
7,32
Cement
8-12
138
4-5
0,8
Sugar
4-5
138
10
11,9
Sugar beets
2
130
13,4
30,94
13 Error m essages
ERR01
Weight value instable or zeroing not possible.
Check the environmental conditions.
ERR02
Adjustment error, e.g. instable environmental conditions
ERR03
Adjustment error e.g. incorrect adjustment weight}
ERR05
Data transfer not possible, as weighing value is instable. Check
the environmental conditions.
ERR07
Faulty data reading
ERR10
Instable display when drying starts, check environmental
conditions
ERR11
Sample weight too small
“UNLOAD”:
Sample or sample dish wrongly positioned.
“Err thb”
Heating top does not work, check current supply
Weighing range exceeded, placed load exceeds the capacity of
the appliance. Unload appliance.
Weighing range not reached, e.g. Dish holder / removal help is
missing.
Page 57
DLB_A-BA-e-1110 57
14 Service, mai ntenance, di sposal
Before any maintenance, cleaning and repair work disconnect the
appliance from the operating voltage.
14.1 Cleaning
Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth
dampened with mild soap suds. Ensure that no liquid penetrates into the device. Polish
with a dry soft cloth.
Loose residue sample/powder can be removed carefully with a brush or manual
vacuum cleaner.
Spilled weighing goods must be removed immediately.
14.2 Service, maintenance
The appliance may only be opened by trained service technicians who are
authorized by KERN.
Ensure that the balance is regularly calibrated, see chap. Testing instruments
control.
14.3 Disposal
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
Page 58
58 DLB_A-BA-e-1110
15 Instant help
Fault Possible cause
Display is not lit up.
• The display unit is not switched on.
• The mains supply connection has been
interrupted (mains cable not plugged in/faulty).
• Power supply interrupted.
Measurement is taking too
long
• Incorrect setting shutoff criterion
Measurement is
not reproducible
• Sample is not homogenous
• Drying time is too short
• Drying temperature too high (e.g. oxidation
sample material, boiling point of sample
exceeded)
• Temperature sensor soiled or defective
The displayed weight is
permanently changing
• Draught/air movement
• Table/floor vibrations
• Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
Page 59
DLB_A-BA-e-1110 59
16 Declar a t ion of conformity
Declaration of conformity
EC-Konformitätserklärung EC-Declaration of -Conformity
EC-
Déclaration de conformité EC-Declaración de Conformidad
EC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodności EC-Заявление о соответствии
D
Konformitätserklärung
Wir erk lären hiermit, dass das Produkt, auf das sich diese Erk lärung bezieht,
mit den nachstehenden Normen übereinstimmt.
GB
Declaration of
conformity
We hereby declare that the product to which this declaration refers conf orms
with the following standards.
CZ
Prohlášení o
shode
Tímto prohlašujem e, že výrobek, kterého se toto prohlášení týká, je v souladu
s níže uvedenými normami.
E
Declaración de
conformidad
Manifestamos en la presente que el producto al que se refiere esta
declaración está de acuerdo con las normas siguientes
F
Déclaration de
conformité
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la
présente déclaration, est conforme aux normes citées ci-après.
I
Dichiarazione di
conformitá
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si
riferisce è conforme alle norme di seguito citate.
NL
Conformiteitverklaring
Wij verklaren hiermede dat het product, waarop deze verklaring betrekking
heeft, met de hierna vermelde normen overeenstemt.
P
Declaração de
conformidade
Declaramos por meio da presente que o produto no qual se refere esta
declaração, corresponde às normas seguintes.
PL
Deklaracja
zgodności
Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,
jest zgodny z poniższymi normami.
RUS
Заявление о
соответствии
Мы заявляем, что продукт, к которому относится данная декларация,
соответствует перечисленным ниже нормам.
Electronic Balance: KERN DLB_A
Mark applied EU Dire ctive Standards
2004/108/EC EN 61326-1:2006
2006/95/EC EN 61010-1:2001
Date: 14.04.2011
Signature:
KERN & Sohn GmbH
Management
KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0
Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com
Page 60
17 Short instructions f or moisture analysis
Call up menu: MENU-key
Scroll to next page: MENU-key
Confirm PRINT button
Exit menu: Press MENU button long time
Scroll to previous page: CAL-key
Prg 1
Load
sample
Enter
Start Test
On/Off
Escape
Prg 2
Prg 3
Prg 4
Prg 5
Measure
Prg time
Set time
Set
temperature
Load
sample
Enter
Test begins
On/Off
Escape
Prg Auto
Set min.
moisture
loss
Set
temperature
Load
sample
Enter
Test begins
On/Off
Escape
Therm
Prg Set
Prg 1
Prg 2
Prg Time
Set time
Set
temperature
Save no
Enter
confirm
Menü
Prg 3
Save yes
Prg 4
Prg 5
Prg Auto
Set min.
moisture
loss
Set
temperatur
Save no
Enter
confirm
Save yes
Serial
Temp test
Temp Adj
Weig PC
Enter
confirm
Service
Manu Prt
Auto Prt
Manu PC
Soft rEL
tH x.xx
Enter
Auto PC
Auto t50
Manu t50
End End Enter
60 DLB_A-BA-e-1110
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