KREBS VK2000 User manual

KREBS VISCOMETER VK 2000
DV1300
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User manual
(Stand1.1 – 01/10)
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Contents
1 General information ..............................................................................1
1.1 Introduction ..............................................................................................1
1.2 Intended use ..............................................................................................1
1.3 Security symbols .......................................................................................1
1.4 Safety notes...............................................................................................2
1.5 Certification, warranty and documentation................................................3
2 Technical data.......................................................................................4
3 Setting up the viscometer .....................................................................5
3.1 Reception and unpacking of the instrument ..............................................5
3.2 Setup .........................................................................................................6
3.3 Instrument connections.............................................................................6
3.4 Setting up the spindle................................................................................7
4 Cleaning................................................................................................7
5 Operation ..............................................................................................8
5.1 Initial turn-on and configuration................................................................8
5.2 (START) Automatic mode measurement ...................................................11
5.3 (ENTER) Manual mode measurement........................................................13
6 About viscometer’s calibration ............................................................14
7 Accessories (optional)..........................................................................15
8 About viscosity ...................................................................................15
9 Viscosity table.....................................................................................16
10 Troubleshooting ................................................................................18
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Stand.1 - 01/10 Page 1
1 General information
1.1 Introduction
The Krebs VK 2000 is a high precision viscometer used for measuring
the viscosity of paints, varnishes, adhesives, pastes and liquid inks
according to ASTM D562 standard.
The viscometer delivers readings in three different units: krebs units,
centipoises and grams. Its usability both in manual and automatic
mode makes the Krebs VK 2000 an ideal viscometer for industrial and
research applications.
1.2 Intended use
The Krebs VK 2000 viscometer has been specifically developed to fulfill
viscosity measurements of paints, varnishes adhesives, pastes and
liquid inks. Only skilled or specially trained personnel must operate the
viscometer.
Everyone who works with the viscometer VK 2000 must strictly follow
the security precautions and observe the safety rules of the laboratory.
It is not allowed to operate the viscometer for any other purpose as the
one described in this chapter. No right to claim warranty will be
granted if any of the above norms are disregarded.
1.3 Security symbols
Installation and operation of the viscometer are user-friendly and very
easy if instructions of this manual are strictly followed.
Be aware that any use of this equipment out of the scope described by
the manufacturer may compromise the security of the operator.
Besides this and in order to stress the points that may represent any
risk both for the operator and the viscometer itself, this manual uses
following symbols and messages:
DANGER
Wherever this symbol, along with the message DANGER, appears in
this manual, it indicates a potential personal injury hazard or damage
on the viscometer. For your security, strictly observe instructions
provided.
CAUTION
Wherever this symbol, along with the message CAUTION, appears in
this manual, it indicates that damages on the viscometer may occur if
instructions are not observed.
For the proper operation of the equipment, instructions must be
strictly observed.
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Page 2 Stand.1 - 01/10
INFORMATION
This symbol refers to specific details of the viscometer which must be
specially considered because of their relevance.
Independent of the instructions contained in this manual, everyone
who operates the Krebs VK 2000 viscometer is obliged to know and
observe the security and hygienic measures of the laboratory where
this device is operated.
Everyone who should operate and set up the viscometer must have
completely read and understood these instructions before starting the
operations.
1.4 Safety notes
Operator security may be at risk if instructions of this manual are not
observed.
Please observe the following general precautions during operation of
this instrument. Failure to comply with these precautions violates
safety standards and the intended use of the instrument. Viscotech
Hispania, S.L. is not liable for misuse of the instrument and failure to
comply with basic safety requirements.
Instrument
grounding
To avoid injury from electrical current, the instrument must be
connected to the safety ground. The instrument is equipped with a
three wire ground plug. The power outlet must be connected to the
safety ground and must meet the International Electrotechnical
Commission (IEC) regulations.
Caution: Voltage Never remove instrument covers during operation. Component
replacement as well as adjustments must only be carried out by
trained personnel. Use only original spare parts when replacing any
component. Unplug the unit before removing or opening the covers.
Appliance coupler is considered as disconnecting device.
Danger in
explosive
environment
The instrument must not be operated in the presence of flammable
gases. It is also forbidden to expose the instrument in environments
where dangerous gas concentrations may occur.
Hazard of
malfunction
To avoid damages on the instrument, it must be only operated in a
controlled electromagnetic environment. According to this, transmitters
such as mobile phones must not be operated near to it.
In case of malfunctions and/or service work, please turn off the
instrument and contact your local dealer.
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Stand.1 - 01/10 Page 3
1.5 Certification, warranty and documentation
Certification Viscotech Hispania, S.L. certifies that this instrument has been tested
and checked carefully. Its technical data has been verified before
shipment to be in accordance with the published specifications. The
instrument complies with applicable international safety regulations.
Warranty This MYR product is warranted against defects in material and
workmanship for a period of 2 (two) years. Parts which prove to be
defective during the warranty period will be repaired or replaced free of
charge. No other warranty is expressed or implied. Unauthorized
modification or repair by third party persons will void the warranty.
The warranty will expire in case of improper or wrong use of the
instrument and in case the warning and precautionary messages are
not observed. Viscotech Hispania, S.L. is not liable for any occurring
damage.
Once the warranty period has expired, we recommend to sign a
maintenance contract in order to guarantee the perfect functionality of
the instrument. For more information on this subject, please contact
your local dealer.
Documentation This user manual will be supplied together with each instrument.
Further copies can be ordered at the local dealer by giving the serial
number of the instrument, the number of the user manual and the
date of issue.
This user manual is available in the following languages: English and
Spanish.
Errors and omissions excepted. Subject to amendment and
improvement without further notice.
Manufacturer VISCOTECH HISPANIA,SL
Vidriers 21
43700 El Vendrell
SPAIN
Tel. + 34 977 66 80 20
Fax + 34 977 66 80 30
viscotech.myr.com.es
www.myr.com.es
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Page 4 Stand.1 - 01/10
2 Technical data
Krebs Viscometer VK 2000
voltage
frequency
100-240V ±10%
50-60Hz
consumption 0,2A
Power
requirements
fuses 1 x 2 AT
Speed One unique speed: 200 rpm ±1 rpm
Viscosity range
UNIT RANGE RESOLUTION
KU 40,2 - 141 0,1 KU
g 32 - 1.099 1,0 g
cP 27 - 5.274 5 cP
Accuracy ± 1% of full scale
Repeatability ± 0,5%
Dimensions 32,5 x 19 x 50 cm
Weight 8,5 kg
Operating conditions:
from +10°C until +40°C
(at a max. rel. humidity of 80% without condensation)
altitude up to 2000 m M.S.L.
for indoor use only.
Pollution degree: 2
Overvoltage category: II
Protection category: IP 20
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Krebs viscometer VK 2000
Stand.1 - 01/10 Page 5
3 Setting up the viscometer
3.1 Reception and unpacking of the instrument
Follow these steps after receiving the instrument:
Please check carefully the packaging box of the viscometer before
removing it in order to find out transportation damages.
Should the packaging box be broken or have suffered any other
damage, please contact the shipping agency before opening it.
Once you have taken the instrument out of the box, check if
damages can be observed. Should this be the case, please inform
the dealer that has delivered you the equipment.
Remove all packing straps, protectors and accessories used
during transport. Recyclable materials are to be disposed in the
containers provided therefore.
Scope of delivered
parts
Krebs viscometer mod. VK 2000
Standard KREBS-type spindle (blade spindle)
Adapters for big and small cans (1 USA pint y ½ USA pint
respectively)
Adapter’s supporting base
Standard 600 ml beaker ( low model), required for automatic
Mode
Mains cable
User manual
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Page 6 Stand.1 - 01/10
3.2 Setup
To set up the Krebs viscometer VK 2000 is very simple, because it
only requires the adjustment of the big and the small container
adapters (to accommodate respectively cans of 1 and ½ pint ) and
the spindle.
For installation, proceed as follows:
Open the box and remove the packing straps, the supporting
foams and the accessories.
Take the VK 2000 out of the box by holding it from its base
and column.
By doing this, it is strongly recommended
not to hit neither the head nor the
spindle shaft (fitted now with a protective
hood) because the mechanical system
could be damaged.
Install the viscometer close to a power
supply on a firm surface. Choose an
installation site protected from
vibrations or contacts that could have a
negative influence on the results.
Proceed levelling the viscometer by
turning the adjusting feet located under
the base of the viscometer (s. fig. 1)
Locate the supporting elements for the
cans according to the illustration.
Don’t throw the box and the transport
elements away as you could need them in
case the viscometer should be returned to
the manufacturer for reparation
3.3 Instrument connections
All connections of the instrument are placed on the rear plate of the head, as the
illustration below shows :
RS232 interface for the printer
(optional)
power switch
mains supply socket
Connect the cables in their respective positions.
small
adapter
(1/2 USA
pint can)
big
adapter (1
USA pint
can)
support
for
adapters
adjusting feet
fig. 1
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Stand.1 - 01/10 Page 7
CAUTION
Before turning on the instrument for the first time, please
check if the power requirements indicated on the type plate
correspond to the power supply being used.
DANGER
Be sure that the power supply where you connect the
viscometer is electrically grounded.
3.4 Setting up the spindle
To set up the spindle, proceed as follows:
Insert it through the hole of the pivot shaft until it reaches the
maximum position (s. fig. 2).
Tighten it slightly using a hex key turning it in a clockwise sense in
order to clamp spindle to the pivot shaft through the anchoring zone.
Pull the spindle down until it reaches the lowest position of the
anchoring zone.
Check manually that the spindle fits correctly.
4 Cleaning
DANGER
Before starting any cleaning operation, check that unit has
been unplugged from the mains and that the spindle has been
removed from the device.
The KREBS viscometer should be cleaned in regular periods of time. To carry out this operation,
please observe following instructions:
Use a clean piece of cloth to clean the instrument and the front panel.
Avoid using solvents or cleaning agents to perform this operation.
The spindle may be cleaned with solvents compatible with the sample to be analized.
The spindle is made of stainless steel. Use therefore cleaning agents for this material.
CAUTION
Clean the spindle carefully to avoid bending it.
fig. 2
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