KERN DBS 60-3 User manual

Operating instructions
Electronic Moisture Analyser
PCE Americas Inc.
711 Commerce Way
Suite 8
Jupiter
FL-33458
USA
From outside US: +1
Tel: [phone]
Fax: [phone]
[email protected]
www.pce-instruments.com/english
www.pce-instruments.com
PCE Instruments UK Ltd.
Units 12/13
Southpoint Business Park
Ensign way
Hampshire / Southampton
United Kingdom, SO31 4RF
From outside UK: +44
Tel: [phone]
Fax: [phone]
[email protected]
KERN DBS
Version 1.1
03/2013
GB
DBS-BA-e-1311

2 DBS-BA-e-1311
GB
KERN DBS
Version 1.103/2013
Operating instructions
Electronic Moisture Analyser
Contents
1Technical data................................................................................................ 4
2Appliance overview ....................................................................................... 6
2.1 Overview of display.................................................................................................................. 8
2.1.1 Display examples.................................................................................................................................... 12
2.2 Keyboard overview................................................................................................................. 13
3Basic Information (General)........................................................................ 15
3.1 Proper use............................................................................................................................... 15
3.2 Improper Use........................................................................................................................... 15
3.3 Warranty.................................................................................................................................. 15
3.4 Monitoring of Test Resources............................................................................................... 15
3.5 Danger Information ................................................................................................................ 16
3.5.1 “Hazard information” sticker.................................................................................................................... 20
4Transport and storage................................................................................. 21
4.1 Testing upon acceptance ...................................................................................................... 21
4.2 Packaging / return transport ................................................................................................. 21
5Unpacking, Setup and Commissioning ..................................................... 21
5.1 Installation Site, Location of Use.......................................................................................... 21
5.2 Unpacking and checking ....................................................................................................... 24
5.2.1 Scope of delivery / serial accessories..................................................................................................... 24
5.3 Placing..................................................................................................................................... 25
5.4 Mains connection................................................................................................................... 28
5.4.1 Turning On the Power............................................................................................................................. 29
5.5 Commissioning....................................................................................................................... 30
5.6 Connection of peripheral devices......................................................................................... 30
6Adjustment................................................................................................... 31
6.1 Adjust balance........................................................................................................................ 31
6.2 Adjust temperature................................................................................................................. 33
6.3 ISO/GLP log............................................................................................................................. 36
7Menu ............................................................................................................. 37
7.1 Navigation in the menu.......................................................................................................... 38
7.1.1 Numeric entry.......................................................................................................................................... 39
8Moisture analysis......................................................................................... 40
8.1 Start drying.............................................................................................................................. 40
8.2 Abort drying ............................................................................................................................ 42
8.3 Finish drying........................................................................................................................... 42
8.4 Turn off appliance .................................................................................................................. 42
9Drying parameters....................................................................................... 43

DBS-BA-e-1311 3
9.1 Save / access .......................................................................................................................... 44
9.2 Adjust....................................................................................................................................... 45
9.2.1 Drying modes.......................................................................................................................................... 45
9.2.1.1 Drying mode AUTO (Standard drying/switch-off criterion “∆M“) ...................... 45
9.2.1.2 Drying mode TIME (Standard drying/switch-off criterion “Time“) ..................... 46
9.2.1.3 RAPID Drying mode (Rapid drying) .............................................. 47
9.2.1.4 SLOW Drying mode (Slow drying) ............................................... 49
9.2.1.5 STEP Drying mode (Step drying) ................................................ 51
9.2.2 Result display.......................................................................................................................................... 54
9.2.3 Start criterion........................................................................................................................................... 56
10 Miscellaneous settings ............................................................................... 57
10.1 Enter sample designation...................................................................................................... 57
10.2 Set date/time for measuring protocol................................................................................... 58
10.3 Menu Lock............................................................................................................................... 59
10.4 Change password................................................................................................................... 61
10.5 Enter identification number................................................................................................... 62
10.6 Resetting the menu ................................................................................................................ 63
11 Print, store and call-up measurement results........................................... 64
11.1 Pin allocation RS232C interface............................................................................................ 65
11.2 Interface parameters .............................................................................................................. 66
11.3 Output interval........................................................................................................................ 68
11.4 Call up and print out measuring results............................................................................... 69
11.5 Print out currently preset drying parameters ...................................................................... 70
11.6 Delete measuring results from memory............................................................................... 71
11.7 Printout examples .................................................................................................................. 72
12 General information concerning moisture analysis................................. 75
12.1 Application .............................................................................................................................. 75
12.2 Basics...................................................................................................................................... 75
12.3 Adjustment to existing measuring method.......................................................................... 75
12.4 Preparing a sample................................................................................................................. 76
12.5 Sample material...................................................................................................................... 77
12.6 Sample size / originally weighted in quantity...................................................................... 77
12.7 Drying temperature................................................................................................................. 78
12.8 Recommendations / Guidelines............................................................................................ 78
13 Service, maintenance, disposal.................................................................. 83
13.1 Cleaning................................................................................................................................... 83
13.2 Service, maintenance............................................................................................................. 84
13.2.1 Remove protective glass guard.......................................................................................................... 84
13.2.2 Lamp change...................................................................................................................................... 86
13.2.3 Replacing fuses.................................................................................................................................. 87
13.3 Disposal................................................................................................................................... 87
14 Instant help................................................................................................... 88
14.1 Error messages....................................................................................................................... 89
15 Declaration of conformity ........................................................................... 91

4 DBS-BA-e-1311
1 Technical data
Data DBS 60-3
Radiator Halogen (1 x 400 W)
Temperature range 50°C - 200°C
1°C increments selectable
Maximum load (Max) 60 g
Minimum weight (min) 0.02 g
Warm-up time 2 h
Readability (d) Weighing mode 0.001g
Moisture analysis mode 0.01 %
Reproducibility
„Weighing mode“ 0.001 g
Reproducibility
„Weighing mode“
Initial weight 2 g: 0.15 %
Initial weight 5g 0.05 %
Initial weight 10 g 0.02 %
Drying modes
Standard drying (AUTO / TIME))
Step drying (STEP)
Rapid drying (RAPID)
Slow drying (SLOW)
Linearity ± 0.003 g
Stabilization time (typical) 3 sec.
Recommended adjustment
weight, not added (class) 50g (F1)
Environmental conditions
•5°C….+40°C ambient temperature
•max 85% air humidity non-condensing

DBS-BA-e-1311 5
Switch-off criterion •AUTO
The drying is finished when the preset weight loss
(∆M ) remains constant for 30 seconds.
•TIME
The drying is finished after the preset time, 1 minute
– 4 hours (1 minute increments)
or 12 hours can be selected
•Manual (STOP button)
Sample dishes included Ø 95 mm
Weighing Units [M/W] [%] moisture
[D/W] [%] dry mass:
[M/D] ATRO* dry mass
[W/D] ATRO* moisture
[GRAM] Gram display
Internal memory Method memory 10 memory locations for drying
programs, see chap. 9.1
Sample memory 100 memory locations for measuring
results, see chap. 11
Interface RS232
Dimensions (B x D x H)
Housing 202 x 336 x 157 mm
Available drying room
Ø 95 mm, 20 mm high
Net weight
4.2 kg
Electric Supply
220 – 240 V AC 50/60 Hz
Power consumption
Rating 430 VA
Voltage fluctuations
Within ±10 %
Power line fuse
3.15 A, 250V
Interrupting rating of fuse
35 A
Pollution Degree 2
Overvoltage Category Category II
Altitude Up to 2000 m
Installation Site device may only be used indoors

6 DBS-BA-e-1311
2 Appliance overview
Front view:
Pos. Description
1 Viewing panel
2 Sample dish
3 Display
4 Bubble level
5 Keyboard
6 Adjustable foot
7 Heated cover
8 Halogen lamp
9 Temperature sensor

DBS-BA-e-1311 7
Rear view:
Pos. Description
10 Anti-theft protection device connection
11 Not documented
12 RS232
13 USB, not documented
14 Mains connection socket
15 Fuse box

8 DBS-BA-e-1311
2.1 Overview of display
No. Display Description
1Currently loaded drying program, see chap. 9.1
2Illuminates during communication with external devices.
3•The stability display indicates that the weighing value is
stable.
•Highlights current setting in the menu.
4The indicator will mark the measuring result
5Drying mode Status display during drying
AUTO
+see chap. 9.2.1.1
Heating-up period
Preset drying temperature is
reached. The drying is finished
when ∆M constant.
TIME
+see chap. 9.2.1.2
Heating-up period
Preset drying temperature is
reached. The drying is finished
when the preset drying time has
expired.

DBS-BA-e-1311 9
RAPID
+see chap. 9.2.1.3
Heating-up period “pre-heating
step”
The pre-heating step is switched
on until “∆M pre-heating step” is
constant.
Temperature is lowered to the
preset drying temperature.
Preset drying temperature is
reached.
The drying is finished when the
preset completion criterion is
fulfilled.
SLOW
+see chap. 9.2.1.4
Heating-up period
Preset drying temperature is
reached.
The drying is finished when the
preset completion criterion is
fulfilled.
STEP
+see chap. 9.2.1.5
Heating-up period step 1
Drying step 1
Heating-up period step 2
Drying step 2
Heating-up period step 3
Drying step 3

10 DBS-BA-e-1311
6
Previous drying time
7
Current temperature
8Result display, see chap. 9.2.2
% M/W [%] moisture
D/W [%] dry mass:
M/D ATRO dry mass
W/D ATRO moisture
g Gram Gram display
9Basic displays
Weight display
Display % moisture
Menu access via MENU button
Equipment is in Ready mode, see chap. 8.4.
0Current menu selection
UNIT Equipment is in menu „Display of results“, see chap. 9.2.2
COMSET Equipment is in menu „Interface parameters“, see chap. 11.2
CODE Equipment is in menu „Sample denomination“, see chap. 10.1
CAL Equipment is in menu „Adjustment“, see chap. 6
PRINT Equipment is in menu „Printer“, see chap. 11.3 – 11.5

DBS-BA-e-1311 11
a
Status display „Equipment“
Top Is displayed when the heated cover
is open.
Flashes when the heated cover
needs to be closed.
Goes out when heated cover is
closed
Centre Is displayed when the heated cover
is open.
Goes out when heated cover is
closed
Flashes when drying process is
active
Bottom Indicates that a sample is in the
sample dish.
Flashes when a sample needs to be
loaded.
Goes out if there is no sample in
the sample dish.
Indicates that a sample is in the
sample dish.
Flashes if taring is required.
Goes out if no sample dish is in
place.
Indicates upon switch-on that the
dish holder is installed.
Flashes upon switch-on if the dish
holder is not installed.

12 DBS-BA-e-1311
2.1.1 Display examples
During drying:
After drying:
1Loaded drying program +see chap 9.1
2Previous time
3Current temperature
4Unit „Display of results“ +see chap. 9.2.2
5Preset drying mode /
Status display drying
+see chap. 9.2.1
+see chap. 2.1
6Current moisture content in %.
During drying with can be switched in ∆M (see chap. 9.2.1.1).
7Drying process active +see chap. 2.1
8Measuring result indicator
9Measuring value (unit in the preset result display) +see chap. 9.2.2

DBS-BA-e-1311 13
2.2 Keyboard overview
Turn on/off
•Call up menu
•Selecting a menu item to the left.
•Scroll back
•Scroll to next page
•Selection of a menu item in clockwise direction
•Taring
•Zeroing
•Activate menu item
•Save setting

14 DBS-BA-e-1311
•Exit menu
•Back to moisture analysis mode
•Quit
Start drying
Complete drying
Numerical input, see chap. 7.1.1

DBS-BA-e-1311 15
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.
Balance may be damage by this.
Never operate device 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
•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 (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.

16 DBS-BA-e-1311
3.5 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 equipment 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 appliance 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 appliances.
!
This moisture analyser is a robust precision instrument, however, it must be
handled with care to ensure many years of trouble-free operation.
!
Never make any modifications or design changes to the equipment
whatsoever. Always use original spare parts and accessories.

DBS-BA-e-1311 17
!
Make sure that liquids do not get in contact with the interior of the device, the
connections at the rear of the device and the peripherals (connected PC or
printer).
If you spill liquid on the device, disconnect it immediately.
Afterwards do not operate the moisture analyzer and have it checked by a
competent KERN stockist before any further use.
!
Never store materials on the equipment.
!
Never place combustible materials on, under or next to the equipment, as the
environment of the instrument heats up to a high temperature.

18 DBS-BA-e-1311
!
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 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 device.
!
Careful when removing the sample. The sample itself, the sample dish and
the heating unit may be very hot.
!
Maintain sufficient space in the environment of the equipment to prevent heat
build-up (distance from the equipment 20cm, upwards 1m).
!
Do not operate the humidity analyser in areas with hazard of explosion
!
Do not place anythin which may interfere the unplugging
!
The power plug must be easily accessible

DBS-BA-e-1311 19
Hazards during and after measuring
!
Ensure correct installation of all components, see chap. 5.3
!
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 equipment by
the marked handles.

20 DBS-BA-e-1311
3.5.1 “Hazard information” sticker
!
Ventilation grilles and inspection windows may become very hot during
operation
!
Always open heated cover completely.
!
Do not use any combustible sample materials.
!
Disconnect the equipment from the power supply prior to changing a lamp,
see chap. 13.2.2.