KERN DLT-N 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 manual
Electronic Moisture Analyser
KERN DLT-N
Version 2.1
12/2014
GB
DLT_N-BA-e-1421

2 DLT_N-BA-e-1421
GB
KERN DLT-N
Version 2.112/2014
Operating manual
Electronic Moisture Analyser
Contents
1Technical data................................................................................................ 5
2Appliance overview ....................................................................................... 7
2.1 Overview...............................................................................................................................7
2.2 Tablet ....................................................................................................................................8
3Basic instructions.......................................................................................... 9
3.1 Proper use ............................................................................................................................9
3.2 Improper Use........................................................................................................................9
3.3 Warranty ...............................................................................................................................9
3.4 Monitoring of Test Resources .............................................................................................9
4Basic Safety Precautions............................................................................ 10
4.1 Pay attention to the instructions in the Operation Manual...............................................10
4.2 Personnel training..............................................................................................................10
4.3 Danger Information ............................................................................................................10
5Transport and storage................................................................................. 12
5.1 Testing upon acceptance...................................................................................................12
5.2 Packaging / return transport..............................................................................................12
6Unpacking, Setup and Commissioning ..................................................... 12
6.1 Installation Site, Location of Use.......................................................................................12
6.2 Unpacking and placing ......................................................................................................14
6.3 Scope of delivery / serial accessories...............................................................................15
6.4 Connections .......................................................................................................................16
6.5 Mains connection...............................................................................................................19
6.6 Commissioning ..................................................................................................................19
6.7 Call-up weighing mode ......................................................................................................24
6.8 Connection of peripheral devices......................................................................................24
6.9 Adjust balance....................................................................................................................25

DLT_N-BA-e-1421 3
7Operating elements ..................................................................................... 27
7.1 Start screen ........................................................................................................................27
7.2 Work screen........................................................................................................................29
8Simple weighing / taring.............................................................................. 30
8.1 Weighing:............................................................................................................................30
8.2 Taring:.................................................................................................................................30
8.3 Default tare (pre tare) .........................................................................................................30
9User profile................................................................................................... 31
10 Setup menu .................................................................................................. 32
10.1 Heating module settings....................................................................................................33
10.2 Balance settings.................................................................................................................35
10.3 Peripheral equipment.........................................................................................................36
10.4 Adjustment .........................................................................................................................37
10.5 Colour of display................................................................................................................38
10.6 Service menu......................................................................................................................39
11 Drying parameters....................................................................................... 40
11.1 Setting the drying parameters manually...........................................................................40
11.1.1 Setting the heating profile .................................................................................................... 41
11.1.2 Shutoff criterion.................................................................................................................... 44
11.1.3 Preheating (before weighing-in)........................................................................................... 46
11.1.4 Weighing assistance............................................................................................................ 47
11.1.5 Result display....................................................................................................................... 49
11.2 Save drying parameters in database.................................................................................51
11.2.1 Creating a new drying program (data record):..................................................................... 52
11.2.2 Change / delete drying programs (data record)................................................................... 53
12 Carrying Out Measurement......................................................................... 54
13 Call up / edit / delete measurement results............................................... 64
13.1 Calling measurement results.............................................................................................64
13.2 Changing / deleting measurement results ........................................................................65
14 GLP ............................................................................................................... 66

4 DLT_N-BA-e-1421
15 General information concerning moisture analysis ................................. 68
15.1 Application .........................................................................................................................68
15.2 Basics .................................................................................................................................68
15.3 Adjustment to existing measuring method.......................................................................68
15.4 Preparing a sample ............................................................................................................69
15.5 Sample material..................................................................................................................70
15.6 Sample size / originally weighted in quantity....................................................................70
15.7 Drying temperature ............................................................................................................71
15.7.1 Surface of the sample:......................................................................................................... 71
15.7.2 Colour of sample:................................................................................................................. 71
15.7.3 Availability of volatile substances:........................................................................................ 71
15.8 Recommendations / Guidelines.........................................................................................71
15.8.1 Prepare standard sample:.................................................................................................... 71
15.8.2 Prepare special samples:..................................................................................................... 71
15.8.3 Table of applications:........................................................................................................... 72
16 Servicing, maintenance, disposal .............................................................. 76
16.1 Cleaning..............................................................................................................................76
16.2 Servicing, maintenance......................................................................................................76
16.3 Disposal..............................................................................................................................76
17 Instant help................................................................................................... 77

DLT_N-BA-e-1421 5
1 Technical data
Data DLT 100-3
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 2 h
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 0.03 %
(Initial weight 10 g)
Preheating before weighing-in

Linearity ± 0.002 g
Stabilization time (typical) 3 sec.
Recommended adjustment
weight, not added (class) 100g (E2)
Environmental conditions •5°C….+35°C ambient temperature
•45% - 75% air humidity non-condensing
Heating profiles
Standard drying
Step-by-step drying
Quick drying
Gentle drying
Result display
[g] residual weight
[% M] moisture
[% R] dry mass
[% A] ATRO

6 DLT_N-BA-e-1421
Shutoff criterion
•Manual
Press stop button
•Time
Drying is finished after the set time, adjustable 1 – 99
minutes
•Autostop %
when the set weight loss (%) per time unit is lower
than the nominal value (both values adjustable)
•Autostop absolute
when the set weight loss (mg) per time unit is lower
than the nominal value (both values adjustable)
Data base for
drying programs 300 positions
Interface RS 232C
Dimensions of the housing
moisture analyser (B x D x
H) 210 x 340 x 225 mm
Available
drying room Ø 100 mm, 20 mm high
Dimensions tablet
(B x D x H) 195 x 120 x 10 mm
Sample dishes included Ø 100 mm
Net weight 4.5 kg
Electric Supply 220 – 240 V AC 50/60 Hz
Mains adapter moisture
meter 9 V DC, 1000 mA
Mains adapter tablet 5.2 V 1.35 A

DLT_N-BA-e-1421 7
2 Appliance overview
The instrument comprises a drying unit (integrated balance + heating module) and a
tablet serving as terminal.
2.1 Overview
Pos. Designation
1 Sample chamber
Drying unit
2 Halogen lamp
3 Temperature sensor
4 Sample dish
5 Heating module
6 Balance
7 Levelling screw
8 Table mount
Terminal
9 Tablet

8 DLT_N-BA-e-1421
2.2 Tablet
Front side:
Rear side:
1 Touch screen 1 Audio loudspeaker
2 Front camera 2 Volume key
3 On / off key
4 Loudspeaker / headset port
5 Microphone
6 Micro USB 2.0 port
7 Rear camera
8 MicroSD card slot

DLT_N-BA-e-1421 9
3 Basic instructions
3.1 Proper use
The instrument 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
instrument, minus a possibly existing tare load, must be strictly avoided.
Balance may be damage by this.
Never operate instrument 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 moisture analyser.
The moisture analyser may only be used according to the described conditions.
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
•Modification or opening of the instrument
•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.

10 DLT_N-BA-e-1421
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 balances.
All language versions contain a non-binding translation.
The original German is binding.
4.2 Personnel training
The instrument may only be operated and maintained by trained personnel.
4.3 Danger Information
WARNING
!
The moisture analyser is used to analyse the moisture content of materials.
This instrument must be used exclusively for this purpose. Any other usage
may cause a risk to personnel, damage to the instrument or other material
damage.
!
The moisture analyser should be used mainly for the drying of aqueous
substances.
!
The moisture analyser may not be used in a hazardous area.
!
The instrument may only be operated and maintained by trained personnel.
!
Carefully read this operation manual before setup and commissioning, even if
you are already familiar with KERN instruments.
Hazards during and after measuring
!
Ensure correct installation of all components, see chap. 6.2
!
Careful when removing the sample. The sample itself, the sample dish and the
heating unit may be very hot.
!
Use the sample retainer at all times as it allows safe working and prevents
burns.
!
Individual parts of the case (e. g. the ventilation grids) may heat up
considerably during operation. Therefore, only take hold of the instrument by
the marked handles.

DLT_N-BA-e-1421 11
CAUTION
The moisture analyzer operates using heat!
+Maintain sufficient space in the environment of the instrument to
prevent heat build-up (distance from the instrument 20cm,
upwards 1m).
+The heat extractor of the sample must never be covered, blocked,
taped up or altered in any other way.
+Never place combustible materials on, under or next to the
instrument, as the environment of the instrument heats up to a
high temperature.
+Careful when removing the sample. The sample itself, the sample
dish and the heating unit may be very hot.
CAUTION
Fire or explosion
+Explosive, easily flammable samples and samples that go into a
chemical reaction when subjected to heat, may not be analysed
with the moisture analyser. Sample materials developing
aggressive vapours (e. g. acids) may cause corrosion problems on
some parts of the instrument.
+If in doubt, conduct a risk analysis.
+Select a drying temperature for samples of this kind that is low
enough to prevent ignition or explosion.
+Wear safety goggles.
WARNING
Substances that contain toxic or corrosive ingredients,
produce toxic gases when drying, cause irritation (eyes, skin,
airways), induce nausea or result in death
+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.
+Sample materials developing aggressive vapours (e. g. acids) may
cause corrosion problems on some parts of the instrument.

12 DLT_N-BA-e-1421
5 Transport and storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
instrument 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 sample dish base, sample dish
holder etc. against slipping and damage.
6 Unpacking, Setup and Commissioning
6.1 Installation Site, Location of Use
The instrument 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 instrument.
-

DLT_N-BA-e-1421 13
On the installation site observe the following:
!
Remove explosion prone and easily flammable material in the immediate
vicinity.
Emerging vapours, sample dish and all parts of the sample chamber are hot!
!
Protect the instrument against direct draughts due to open windows and
doors.
!
Avoid extreme heat and temperature fluctuations e.g. due to installation next
to radiators.
!
Do not expose the instrument to extreme dampness for longer periods of time.
Non-permitted condensation (condensation of air humidity on the instrument )
may occur if a cold instrument is taken to a considerably warmer environment.
In this case, acclimatize the disconnected instrument for ca. 2 hours at room
temperature.
!
Avoid direct sunlight
!
The air humidity should be between 45% and 75%, non-condensing.
!
Sufficient distance from heat-sensitive materials in area around instrument.
!
Protect the instrument against high humidity, vapours and dust,
!
Major display deviations (incorrect weighing results) may be experienced
should electromagnetic fields (e.g. due to mobile phones or radio instruments),
static electricity accumulations or instable power supply occur. Change
location or remove source of interference.
!
Avoid static charging of the material to be weighed, weighing container and
windshield
!
Place the instrument on a firm, level surface.
!
Avoid jarring during weighing.

14 DLT_N-BA-e-1421
6.2 Unpacking and placing
1. Drying unit
Take the instrument carefully out of its packaging, remove the plastic jacket and
install it at the designated work space.
The instrument is supplied part-assembled. Immediately after unpacking check if the
delivered items are complete. Assemble the separate component parts according to
their sequence.
1. Windshield
2. Sample dish holder
3. Removal aid
4. Sample dish
1. Put windscreen in sample chamber.
2. Carefully put sample dish holder on top.
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.

DLT_N-BA-e-1421 15
5. Level instrument with foot screws until the air bubble of the water balance is in
the prescribed circle.
Check levelling regularly.
5. Tablet
Remove the tablet carefully from the packaging, remove plastic cover and install at
intended place of installation, using the table mount.
Charge the rechargeable battery.
Before the first use, the battery should be charged by connecting it to the mains
power supply for at least 8 hours.
6.3 Scope of delivery / serial accessories
Drying unit Tablet
•Drying unit, see chap. 2
•10 sample dishes
•Power cable
•Power pack drying unit
•Connecting cable
“balance heating module“
•Operating manual
•Tablet see chap. 2
•Table mount
•Mains adapter
•Micro-USB cable
•RS 232 Bluetooth Adapter

16 DLT_N-BA-e-1421
6.4 Connections
1. Drying unit
1. Connection of connecting cable “balance / heating module“
2. Connection net adapter „Balance“.
3. Power supply „heating module“.
4. Connection RS 232 „Bluetooth Adapter“
5. Connection of connecting cable “balance / heating module“
6. Main switch „heating module“
7. Adjustable foot screws
1
7
2
5
6
4
3

DLT_N-BA-e-1421 17
8. Housing screws
9. Housing screws (for access remove the foot screws)
10. Adjustable foot screws
11. Rigid foot screw
8
7
10
9

18 DLT_N-BA-e-1421
2. Tablet
Rear side:
1 Audio loudspeaker
2 Volume key
3 On / off key
4 Loudspeaker / headset port
5 Microphone
6 Micro USB 2.0 port
7 Rear camera
8 MicroSD card slot

DLT_N-BA-e-1421 19
6.5 Mains connection
Power is supplied to the integrated 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.
Power supply to the heating module is provided via the supplied mains cable. Do not
connect the instrument to the power grid unless the information on the instrument
(sticker) matches the local mains voltage.
The instrument 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.
6.6 Commissioning
+Established connections according to diagram and connect to power
supply. Make sure that the tablet is turned off during the connection.
Turn on drying unit at master switch.
After the turn on check, the drying unit will be in default “tablet“ mode.

20 DLT_N-BA-e-1421
If not, activate it by following the steps below:
In weighing mode, press and hold pressed until the audio signal
stops. Release the key and the menu item “units“ will appear.

Press repeatedly until “tbL mode“ appears.
Acknowledge with . The current setting will be displayed.
Press to select the setting ”tabl on“.
Acknowledge with . Wait until „tablet“ appears.
+To turn on the tablet, press and hold the tablet’s on/off key for approx.
two seconds.
+To unlock tap and drag onto .