KERN DBS 60-3 Operating Instructions Manual
Operating instructions
Electronic Moisture Analyser
PCE Americas Inc.
711 Commerce Way
Suite 8
Jupiter
FL-33458
USA
From outside US: +1
Tel: (561) 320-9162
Fax: (561) 320-9176
info@pce-americas.com
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: (0) 2380 98703 0
Fax: (0) 2380 98703 9
info@pce-instruments.com
KERN DBS
Version 1.1
03/2013
GB
DBS-BA-e-1311
2 DBS-BA-e-1311
GB
KERN DBS
Version 1.1 03/2013
Operating instructions
Electronic Moisture Analyser
Contents
1 Technical data ................................................................................................ 4
2 Appliance overview ....................................................................................... 6
2.1 Overview of display .................................................................................................................. 8
2.1.1 Display examples .................................................................................................................................... 12
2.2 Keyboard overview ................................................................................................................. 13
3 Basic 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
4 Transport and storage ................................................................................. 21
4.1 Testing upon acceptance ...................................................................................................... 21
4.2 Packaging / return transport ................................................................................................. 21
5 Unpacking, 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 d evices ......................................................................................... 30
6 Adjustment ................................................................................................... 31
6.1 Adjust balance ........................................................................................................................ 31
6.2 Adjust temperature ................................................................................................................. 33
6.3 ISO/GLP log ............................................................................................................................. 36
7 Menu ............................................................................................................. 37
7.1 Navigation in the menu .......................................................................................................... 38
7.1.1 Numeric entry .......................................................................................................................................... 39
8 Moisture analysis ......................................................................................... 40
8.1 Start drying .............................................................................................................................. 40
8.2 Abort drying ............................................................................................................................ 42
8.3 Finish drying ........................................................................................................................... 42
8.4 Turn off appliance .................................................................................................................. 42
9 Drying 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 par ameters ...................................................................... 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
1
Currently loaded drying program, see chap. 9.1
2
Illuminates during communication with external devices.
3
• The stability display indicates that the weighing value is
stable.
• Highlights current setting in the menu.
4
The indicator will mark the measuring result
5
Drying 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
8
Result 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
9
Basic displays
Weight display
Display % moisture
Menu access via MENU button
Equipment is in Ready mode, see chap. 8.4.
0
Current 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:
1
Loaded drying program + see chap 9.1
2
Previous time
3
Current temperature
4
Unit „Display of results“ + see chap. 9.2.2
5
Preset drying mode /
Status display drying
+ see chap. 9.2.1
+ see chap. 2.1
6
Current moisture content in %.
During drying with can be switched in ∆M (see chap. 9.2.1.1).
7
Drying process active + see chap. 2.1
8
Measuring result indicator
9
Measuring 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 us e
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 Us e
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 informati on” 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.
DBS-BA-e-1311 21
4 Transport and stora ge
4.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
4.2 Packaging / return transport
Keep all parts of the original packaging for a possibly
required return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove
loose/mobile parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the
weighing platform, power unit etc. against shifting and
damage.
5 Unpacking, Setup and Commissioning
5.1 Install ation 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.
22 DBS-BA-e-1311
On the installation site observe the following:
!
Remove explosive materials from the immediate vicinity.
Emerging vapours, sample dish and all parts of the sample chamber are hot!
!
Remove easily flammable materials from the immediate vicinity.
!
Protect the device against direct draughts due to open windows and doors.
!
Avoid extreme heat and temperature fluctuations e.g. due to installation next
to radiators.
!
Avoid direct sunlight
DBS-BA-e-1311 23
!
Never store materials on the equipment.
!
Protect the appliance 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 equipment),
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 device on a firm, level surface.
!
Avoid jarring during weighing.
!
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.
!
Operate the device only indoors.
24 DBS-BA-e-1311
5.2 Unpacki ng and checking
Open package, take out the appliance and accessories. Verify that there has been
no damage and that all packing items are present.
5.2.1 Scope of delivery / serial accessories
1. Instrument
2. 50 disposable sample dishes
3. Dish holder
4. Wind protection ring
5. Heat shield
6. Spare fuse
7. Removal aid
8. Power cable
9. Protective cover
10. Operating instructions
11. Menu overview
12. Hexagonal socket wrench
DBS-BA-e-1311 25
5.3 Placing
The moisture analyser is delivered in pieces. Check immediately after unpacking all the
parts that the delivery is complete and assemble the individual components as described
below.
1. Fit heat shield.
2. Install wind protection ring, ensuring correct positioning, on .
26 DBS-BA-e-1311
3. Install dish holder, ensuring correct positioning, on .
4. Fit sample dish.
5. Level the equipment with foot screws [1] until the air bubble of the water balance is
in the prescribed circle.
DBS-BA-e-1311 27
If the air bubble is at the lefthand edge, level the equipment with the righthand foot
screw, see Fig.1.
If the air bubble is at the righthand edge, level the equipment with the lefthand foot
screw, see Fig.2.
If both foot screws are turned simultaneously in clockwise direction, the air bubble will
move forwards (see Fig.3).
If both foot screws are turned simultaneously in anticlockwise direction, the air bubble will
move backwards (see Fig.4).
Check levelling regularly.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
28 DBS-BA-e-1311
5.4 Mains connection
Power supply is provided via the supplied mains cable.
Check, whether the voltage acceptance on the scales is set correctly. Do not connect
the appliance to the power grid unless the information on the appliance (sticker)
matches the local mains voltage.
Important:
Does the labelling match the local mains voltage?
- Do not connect if mains voltages are different!
- If matching, connect the scales.
The moisture analyzer 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.
- The power plug must be always accessible.
- Before operating, check all cables for damage.
- Guide the cables so that they cannot become damaged or interfere with the
measuring process.
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