KRAL Inside engl.

INSIDE
No. 1 October 2000
With KRAL as a partner for unique solutions
Years
KRAL anniversary
History and review
Fit for the future
Successful
partnerships
Product innovations
Anniversary raffle
Your ticket to the
Ski World Cup in St. Anton

ANNIVERSARY
50 years of KRAL – a wonderful
reason to review the past
as well as a brief look at the future
It has been a long and very intensive journey from the operation
of the first KRAL domestic water pump to the state of our high-tech
company with the development and production of screw pumps
and flowmeters.
KRAL Volumeters were a useful
addition and increased our market
value worldwide.
Our customers were and are far
more than mere “buyers” of our
products.
Engineer Fritz Huber and his
management team took over
the management of the business
in 1997. Erich and son,
Graduate Engineer Otmar
Kräutler, have been on the board
since that time and created the
best conditions for optimum
management of the future.
From the start we have been
nurturing a culture whereby the
daily work is accomplished
together. This even includes the
families of our staff. This can
only be produced but not
bought. This is the result of
experiencing a company culture
from which the customer will
benefit in the end.
The points are set for the
“KRAL train“ regarding the future:
Performance and
commitmend
This positive development has
demanded intense commitment
Oskar Kräutler, Founder of the Company
from our employees and the
company management.
When the founder of our company,
Mr. Oskar Kräutler, started
as a one-man operation with the
production of domestic water-
Erich Kräutler and Fritz Huber
works in 1950, the demand of a
conventional market had to be
accommodated. Consequently,
mainly water pumps and customized
designs have been built.
With the takeover of the
“pumps“ company by his son
Erich Kräutler in 1968, the still
new “screw pumps“ area was
pushed forward as the core
business. Main emphasis was
placed on the oil-firing market
with at that stage already very
difficult media.
We developed a wide range of
products to accommodate the
customer's requirements. The
excellent reputation of our KRAL
fuel oil pumps became the basis
for the development of pumps
for hydraulic and lubrication
applications.
Otmar Kräutler
If a review of the things that
contributed mainly to the success
is made in the year of the company's
anniversary, the fact that the
“KRAL train“ does always run on
two tracks must be mentioned
as one important contribution:
1. To recognize the customer's
requirements and to take the
necessary measures to comply
with them quickly.
2. Establishing and maintaining
good relations with all the
people directly involved with our
products.
Currently Graduate Engineer
Otmar Kräutler works as an advisor.
His comprehensive training
at the Technical University Graz,
his manifold work experience in
other companies and the established
KRAL philosophy creates
trust in continuity.
Our main aim is not profit
maximization or market domination
at all costs, but trustful, successful
and permanent co-operation
with our customers and
employees.
Erich Kräutler
2

RETROSPECTIVE
The History
1950
It is impressive to follow all that
has happened in 50 years.
Here the stages of our success
1965
The first years
1950 At the time of the company's foundation, the
product range includes domestic water pumps,
electric motors, industrial water pumps and
gear pumps.
1955 Glandless and quiet running circulation pumps
are developed and produced.
1976
1958 The first screw pumps with two spindles are
built to accommodate the heating technology's
requirements.
1965 The screw pump range is extended, triple screw
pumps are developed and produced in series.
Now screw pumps are produced exclusively.
1976 The plant II on Bildgasse is built.
1977 The production moves into the new building.
1977
1978 The first programmable Heid NC lathe with
quintuple turret and control tape as data medium
is put in operation.
1979 In the office area, flexible working hours
are introduced.
Many new products
1980 The first electronic data processing system
is introduced.
1978
1982 The insert and universal pump series C is
designed. The maximum capacity is designed
for 1750 l/min at 2900 rpm.
1982
3

RETROSPECTIVE
1984
1984 The screw volumeter OM is developed for measuring
the rate of flow. Maximum accuracy ( ±0.1 %)
over a wide measuring range (1:100) characterize
this instrument aside from its sturdiness.
1985 A special twin screw pump, ZC, for special
applications is included in the program. Its capacity
is 400 l/min.
1988
Successful years
1986 A new extended electronic data processing
system is introduced (AUPRO).
1988 Based on shipbuilding requirements, the K pump
series with a maximum capacity of 1300 l/min
at 1450 rpm is developed.
1989 Introduction of CAD for the design.
1990 We celebrate the company's 40th anniversary.
1990
We continue to grow
1992 Extension of plant II. The offices move into the
new company building in June 1992.
1995 Introduction of the quality assurance system
ISO 9001.
1997 Erich Kräutler hands over the company
management to Fritz Huber.
1992
1999 Introduction of flexible working hours for
production and assembly.
2000 This year we celebrate the company's
50th anniversary.
1997
1999
4

OUTLOOK
Fit for the Future
Finding unique solutions with KRAL as a partner
Complete customer focus is our
highest goal. We use our competence
for our customers' market
advantage. We developed
our competence in delivering
and measuring of fluids over the
last 50 years and continuously set
measures for further development
of this competence. This
requires fitness in all areas to
maintain our development at a
high standard:
Quality is the top maxim. Our
quality assurance system according
to ISO 9001, certified by
DNV, is our fitness program for
the processes in our company.
Continuous development towards
process-oriented quality
management is in progress and
will link us even closer to our
customers' requirements in the
future.
The most important factor for a
dynamic development is motivated
employees who build competence
by accumulating knowledge
in a purposeful manner. A
training schedule for each
employee is put into practice
through company seminars held
in co-operation with institutions
such as the University of St.
Gallen, University of Erlangen,
Austrian Controller Institute,
Institute for Business Development
and other competent organizations.
Further measures
include individual seminars and
monthly information evenings. A
comprehensive company library
provides topical, relevant, specialized
literature and videos for
individual training. A company
sports group offers opportunities
for physical fitness. The extensive
information available helps
to motivate the employees.
Team spirit, creativity and initiative
are a plus for our customers.
Strategic alliances
To increase the development of
our innovation spiral, the development
efforts have been
strengthened in both our product
groups. The contact with
KRAL plant
5

OUTLOOK
KRAL sales partners worldwide
our customers has since intensified.
These measures help us to
get to know our customers'
requirements even better and to
create solutions of high benefit.
Being fit for solving application
problems is therefore not just a
slogan but the basis of our
strategy.
The company entered into strategic
alliances with companies
such as J.H. Bornemann in
Obernkirchen for an integrated
approach. For many customers
co-operation like this has become
a reliable approach
towards complete pump packages
as system solutions.
Worldwide representation and
customer service are major concerns
for us. The target of
“being close to the customer“ is
almost fulfilled with 35 sales
partners worldwide. More sales
and service partners will become
active soon in strategically
important markets.
Communication and information
availability have increased continuously.
We at KRAL mainly
communicate using email. To
increase the exchange of information,
the KRAL homepage
(www.kral.at) was established
recently as a means of providing
current, interactive information.
Our target is to utilize the
options of this instrument for
our customers' and sales partners'
full advantage.
Further aspects of the fitness
for the future are our immense
investments in production
machinery. In the last few years,
state-of-the-art production
machines have been commissioned
to ensure the highest
product quality.
The management can approach
the future in a fit and confident
manner first and foremost due
to the fact that the company
owners, the Kräutler family,
have considered customer satisfaction
and employee satisfaction
as a top priority since the
company's foundation. Issues
such as profit maximization are
put on the back burner compared
with these objectives.
Satisfied customers come first,
which are naturally followed by
satisfactory business results.
Profit optimization programs
direct attention to subjects such
as “mergers and acquisition”
instead of analysis and compli-
Management meeting at KRAL
ance with customer requests.
This long-term orientation guarantees
that you as our customer
will continuously receive high
performance and optimum service
well into the future.
Fritz Huber
Managing Director
6

PARTNERS
Bornemann
Chance for the Future – The Niche Specialist
screw pumps with the traditional
fields of application:
loading pumps for products
carriers and special tankers
transfer pumps for tank
farms,
process pumps for the petrochemistry.
This co-operation, which is strengthened
by a close personal contact
between the company management,
includes common agencies,
package offers, co-ordination of
the quality assurance system as
well as the product range and
specialization of the production.
Obernkirchen 2000
From Pump Manufacturer
to System Supplier
Merger mania is also going
around in the pump business.
More and more companies merge
due to the necessity to be represented
in the worldwide market.
Like KRAL, the north German
pump manufacturer BORNEMANN
considers this as a chance to
provide a better solution : by cooperating
and clearly focusing on
one niche of the market - specializing
in a limited product area and
consequently performing as a
qualified partner for customers in
order to solve their problems.
Both family businesses, KRAL
and Bornemann, have been cooperating
for more than ten years
following this maxim. Alongside
the triple screw pump specialist
KRAL, BORNEMANN has its
place on the market as the world's
leading manufacturer of twin
The exceptional growth of both
companies confirms of this policy.
Michael Bornemann-Galensa
Managing Director
External twin screw pump
Multiphase pump systems for the oil production (PETROZUATA, Venezuela)
7

PARTNERS
PG Marine Group
with KRAL in the Global environment of Shipbuilding
and Marine Operations
With the Marine group PG is currently establishing a global network for servicing
the ship construction and marine industries. Especially at this development stage, it
is extremely important to have information on the current position of this branch of
industry, which is based on reliable analyses and facts.
By Roy Norum (45), President c.e.o. of the PG Marine Group, Norway
(ex. Managing Director of COLFAX Pump Group – Division Marine International)
Requirements & trends
By luck – or rather: by pure business
professionalism - the global
marine environment is a most
clearly defined, and very well
documented field of business,
and reports, analysis, trend research
and financial focus are
easily available to those who seek.
never realized this fact, as their
focus have been more on their
own skills and abilities, than the
facts and demands of the business
environment.
This is the challenge to companies
like KRAL, as their high level
of flexibility, wide range of products,
and high base quality enables
them to act – instead of
react – when trends changes the
path to success.
PG Marine Group works closely
with principals such as KRAL, to
ensure the integration of information
available from the various
business-chain-elements. This is
why PG focus strongly – and
invests – in participation in all the
various sections of the business.
The mere QDC (quality, delivery,
cost) focus is not enough to
sustain success – the understanding
and ability to adopt to changes
and act for improvements is
more significant to the decisionmakers,
and goes far deeper
than the initial cost-oriented interest
of the buying shipyards.
PG spends resources on making
sure that principals like KRAL are
integrated in the OEM (original
equipment manufacturers) chain,
are known in detail by the ship
designers and naval architects,
not least the ship operators and
owners – and cater closely to the
What is not so easily available,
but need significant ”leg-work”
to find, is the underlying trends
and developments which separates
the successful bidders from
the crowd. Such information and
knowledge can only be gained by
close and long-lasting relationships
to the various parts of the
business-chain that forms the
marine community. Many actors
in this fascinating field have
8

PARTNERS
compact, easiest convertible and
lowest cost related to the performance
of the product.
The pump market was dominated
up to the end of the 60’s by
stuffing box sealing systems,
whereas from the 70’s mechanical
seals have taken the market.
Forecasts are that the same will
happen with mag-drives, but the
main obstacle so far has been
the cost-impacts to the initial
buyer – to the detriment of the
ship operators. KRAL has significantly
lowered this threshold –
and made these products far
more available.
3) KRAL twin-units are another
example of excellent engineering.
Trends at many shipyards -
as well as OEM’s – are clearly to
the advantage of such compact
solutions. Leading Korean
Shipyards e.g. have chosen this
solution to both have more compact
installations, but also save
significantly on installation costs
and utilities.
regional and local service hubs to
keep the expected level of uptime
for the installed equipment.
Similar knowledge at the building
yards is likewise important, but
not enough to secure qualified
positioning, and long term success.
Various trends directly relevant to
the products of KRAL in the
recent past, have been picked up
in a most professional way;
1) The market offers lower grades
of fuels – with significant
cost-savings to the operators, but
less fortunate effects for the
lubricity of the pumps.
Application of longer screw-sets,
insert casings with lower friction
and seals adopted to these particulars
secures safe operation of
the heart-components of the
ships’ fuels systems
2) The market asks for hermetically
sealed, leakage-free magnetic
driven pumps. Both in terms
of safety, and in terms of comfort
& service-need, this has emerged
over the last few years as a
desired solution. Traditionally this
has been solved by amending
industrial products – result; overengineered
products which hold
a cost-level far beyond the
request of the market. KRAL has
addressed this topic in a purpose-oriented
manner, which lead
to a product that is both the most
KRAL participates in the PG
Marine Group as one of the coreprincipals,
where we enable
clients in all parts of the business-chain
to recognize, find and
work with one source for all main
components in our field of business.
This again is a result of
adoption to trends in the market,
as larger packages are more and
more often requested to limit the
number of vendors, reduce logistic
& documentation hassles,
and work on higher procurementvolumes
with each core-supplier.
This global partnership has positioned
both parties in a higher
rank of international players,
enabling us to widen our geographical
orientation significantly.
This not least in terms of aftersales-services.
What makes KRAL superior to
other competition for marine operations
can be covered by few
statements – this time from one
that has faced KRAL as core competition
formerly seeking counterarguments
against these facts;
9

PARTNERS
C) High Performance / Cost –
factors due to a.m. facts
D) A most complete – and growing
– range of highest quality
products
E) 50 years of history in building
such equipment, with a vast
base of experiences from
various industries & applications
that surpass most competition
KRAL Double stations
A) Flexibility, and will to lead
trend-variations at an early stage
of the process
B) Purpose-designed products –
not adopted industrial units –
which address the specific
application
Marine Group and KRAL will continue
their growth in all global
markets, relating strongly to facts
mentioned above, and ability &
will to adopt to changes in the
business environment of marine
& offshore industry
Roy Norum
Matter-Hydraulik congratulates
The 50-year KRAL anniversary is
reason for me to put down a
few lines on special successes
and experiences, etc.
Well, the first thing I can think of
is the very pleasant and friendly
co-operation with the KRAL
staff. It has (almost) always
been fun working together with
you and I hope that we can
maintain this status also over
the next 20 years.
We, from the Matter company,
have been working together
with Kräutler for 20 years, and,
according to Erich Kräutler and
Fritz Huber, KRAL is also mostly
satisfied with us, apart from the
short delivery dates the Swiss
set for their neighbors…
As junior head of Matter I have
known KRAL for some time. I can
still remember very well the old
company premises where everything
was still a little bit “smaller”.
And then the construction of the
new plant took place, and one
has to congratulate KRAL on
that. Perhaps the building will
soon be too small again if we (all
together) were to meet Fritz’s
turnover expectations.
With regard to the KRAL motto
“fit, not fat”, the following story
comes to mind:
The erection of an exhibition
stand was planned in Zurich
(hydraulics exhibition). On the
last day of installation (Monday),
I received a call from the exhibition
management around 9 ‘o
clock asking if we had forgotten
the exhibition! At 11 am we arrived
at the exhibition. We then
got stuck in with Gregor Toncev.
At 5 pm everything was finished!
Top performance I would say: 6
hours for an exhibition stand.
Special successes of note are
customers such as Sulzer, ABB,
Bobst, etc.
However there are also special
types of orders:
Our simplex filling system with
an OMK 20 still operates perfectly
after 8 years. It is not possible
to do it simpler. And the
accuracy of the containers to be
filled (5 liters + 10 liters) is accurate
to the gram!
We would very cordially like to
congratulate on the “round”
birthday and wish all the best
and much success for the future.
Christoph Matter and the Matter
hydraulics team!
Switzerland representation
10

PARTNERS
SAACKE firing systems
Environmentally aware thermal technology
SAACKE solves “burning“ issues worldwide –
using KRAL pumps.
SAACKE burners have been
used on ships of all flags for
more than half a century.
SAACKE has designed a burner
generation that can reliably do its
duty even under most difficult
conditions, stormy weather and
high seas. Engineers and technicians,
who practically moved
their activities away from the
ship to land, introduced SAACKE
burners, examples of quality and
reliability, to additional fields of
application, which were new to
SAACKE at that time.
Today our systems are at home
in all areas of industry, of commerce
and shipping where energy
is required on a large scale
for production processes, for
building district heating systems
or for power generation in
power stations. SAACKE firing
systems are an excellent solution
in the area of residual energy
utilization, for instance of turbine
exhaust gases, in the reheating
of flue gases in power
stations for the reduction of NOx
pollution as well as the thermal
re-combustion, for instance of
waste air emission and in
systems for thermal recycling of
residue. The requirements on
the combustion technology for
industrial heat generation keep
growing while economic and
especially ecological requirements
dominate the development
concepts for future industrial
burner systems.
In order to solve these “burning”
issues in energy and environmental
technology, SAACKE
maintains companies and service
offices throughout the world.
More than 1200 SAACKE
employees are engaged worldwide
to achieve that objective.
SAACKE develops, plans and
manufacturers customized combustion
systems for all areas of
industry, commerce and shipping.
From the arctic to the tropics,
SAACKE engineering is a
household word in the world of
heat generation and constitutes
the current state of the art.
Because SAACKE products are
distributed worldwide, they
obviously have to meet highest
quality requirements and applicable
regional standards.
In order to ensure highest quality
for our customers, we are
dependent on reliable but also
innovative suppliers who take
up the challenge of constantly
changing markets. Our business
relationship with KRAL started
more than 25 years ago with the
introduction of pumps in the proven
compact design. Since that
time, continuously sound advice
and support with problem solutions,
the consideration of a
wide range of individual needs
with the resulting success for
us, has made KRAL an indispensable
partner to us.
SAACKE uses KRAL pumps for
the supply of oil burners with
light and heavy oil in marine and
land-based systems for energy
generation, waste incineration
and for many other applications.
In KRAL we have found a flexible
partner for screw pumps and
underscored this partnership
with an agreement, which bundles
our pump requirements and
ensures that all SAACKE companies
worldwide purchase KRAL
products at the same conditions
and are able to make use of the
proven KRAL service.
We wish KRAL all the best on
their 50-year anniversary and
look forward to continued fruitful
co-operation.
SAACKE – the symbol of reliability.
Stefan Cordes
Purchase Manager
11

TECH NEWS
KRAL Screw Pump
with Magnetic Coupling
The economy of firing systems and drive units is further improved
by the use of KRAL screw pumps with magnetic couplings.
Cross section view of a block aggregate with magnetic coupling
KRAL screw pumps serve
all rotary positive displacement
cally sealed stainless steel can
mainly for the pumping of oils
pumps. Most shaft seals such
seals the pump from the
for firing systems in power sta-
as lip seals, mechanical seals and
atmosphere. High-performance
tions for electrical generation
packings create friction in the
permanent magnets transfer
and on ships for propulsion.
highly sensitive sealing clearan-
motor torque to the pump shaft.
Because of the economic rele-
ce. They require fluid for dischar-
The magnetic coupling operates
vance, operators place high
ging the frictional heat. The gas
without friction. The most deci-
demands on the operational
evolution or even evaporation of
sive point is that the magnetic
safety and reliability of such
systems. Unintenionally long
this fluid leads to dangerous dry
run, which may cause the failure
coupling is as reliable and durable
as the pump itself. And the
Booster-module with
KRAL screw pumps
delays in docks or purchase
of the seal. These seals show a
magnetic coupling operates
of electricity due to failure of
certain leakage.
without leakage, so that the
the power station are very
Instead of the seal, a hermeti-
environment remains clean.
The selection of magnetic coup-
expensive. Leaking seals require
lings requires some expert
expensive cleaning not to
knowledge and KRAL has there-
mention the hazard for man and
fore developed a special soft-
equipment.
ware program for magnetic couplings.
KRAL offers standard
In order to seal the pump part
screw pumps as a block unit
from the atmosphere, screw
with magnetic coupling and
pump require shaft sealing like
electric motor for capacities up
to 550 l/min and maximum pressure
of 16 bar.
Georg Napp-Zinn
Magnetic coupling as sealing element,
inner and outer rotor for the transmission
of the torque from the motorto
the pump shaft
Product Manager Screw Pumps
12

TECH NEWS
KRAL Volumeter ®
Precision flowmeters for rough operating conditions
With the KRAL Volumeter ® , KRAL concentrates on flowmeters that operate according to the
“classic” operating principle of positive-displacement meters. In today’s rather “trendy”
environment of electronic measuring instruments, KRAL consistently innovates the Volumeter
and offers the market measuring instruments with laboratory measuring precision. Due to the
sturdy design, they also provide reliable measuring results in rough industrial environments.
This report describes the unique technical measuring advantages of the Volumeter. In the
following issues of Inside an application report and an overview of other flow measuring
methods will follow.
The first Volumeter
What is so special about the
KRAL Volumeter ® ?
Product presentations immediately
raise the question among
readers as to the benefit in the
intended application. For a
quick orientation we provide
this advance information:
KRAL Volumeters are flowmeters.
They continuously
measure the flow rate of
liquids (0.1 to 7,500 l/min,
optional mass conversion).
KRAL Volumeter are part of
the category of positive
displacement meters and
work according to the screw
spindle principle.
A major characteristic is the
high measuring accuracy
(± 0.1 % of the measured
value) over a wide measuring
range (1:100).
Another particular feature is
that the measuring accuracy
typical for laboratories is also
achieved in rough industrial
conditions (for instance with
high system pressures or
pressure vibrations in the fluid
flow), characteristics that
exclude one another in other
flowmeters.
KRAL Volumeter ® - the
original has a history
The KRAL Volumeter has an
independent production group
of Kräutler GmbH & Co.
Approximately 20 years ago we
developed the Volumeter for an
internal requirement. We needed
an accurate flowmeter for
our pump test stand. We did not
find a suitable instrument on the
market that met our requirements
for measuring accuracy
over a wide measuring range
under the rough operating conditions
of a pump test stand.
Since KRAL had more than 30
years of experience in the manufacture
of screw pumps, we had
the idea of reversing the operating
principle of the pumps. On a
pump we determined the flow
that rotated the screws by
means of a pulse generator fitted
to the drive shaft. We consequently
developed the
Volumeter further and were able
to bypass the limitations of
other flow metering systems. In
the meantime we have developed
an instrument program that
has proved itself under many
industrial requirements.
The series clearly show the
customer benefit
KRAL Volumeters are classified
in series. The classification
refers to the material of the
flowmeter or its field of application.
This explains the benefit.
All series designations start with
OM standing for oil meter. This
reflects our KRAL history. KRAL
Volumeters of series OMG are
manufactured of grey cast iron.
The universal possibilities are
apparent through the wide flow
range of 0.1 to 7,500 l/min, permissible
system pressure of 250
bar and the temperature range
from –40 to +260 °C.
OME is the economy version.
This series answers the request
for an economical flowmeter.
With a flow range of 0.1 to 150
l/min, a permissible pressure up
to 40 bar and a temperature
range from –20 to +100 °C, we
have concentrated on the most
frequently required operating
parameters and equipped the
instrument only with what is
really needed. OME has an alu-
13

TECH NEWS
KRAL Volumeter ® - Flowmeter Overview
Series OMG OMH OMK OMS OME OMX
Classification Universal High pressure Chemically Stainless Economy Custom design
resistant
Flow range
(l/min) 0,1 - 7.500 0,1 - 3.000 0,2 - 150 3,5 - 1.050 0,1 - 150 0,1 - 7.500
Max. pressure
(bar) 250 420 40 40 40 630
Temperature range
(°C) -20 - 200 -20 - 200 -20 - 100 -20 - 100 -20 - 100 -40 - 200
14

TECH NEWS
minum casing. The measuring
signal is directly taken from the
screws. The instrument design
is production-optimized. The
high measuring accuracy is retained
despite all the concentration
on the “most popular” operating
parameters.
OMH is the flowmeter for the
high-pressure area. As standard
it is designed for a system pressure
of up to 420 bar. For special
applications on oil platforms
we have already produced
designs up to 1,035 bar. The
special task of a high-precision
flowmeter for high-pressure
applications is that the measuring
chamber must not change
under pressure to the extent
that the measuring accuracy
would drop. The KRAL
Volumeter is an in-line meter,
the liquid flows through the
instrument without being
deflected. This permits a small
casing shape. Among the highpressure
meters on the market,
the OMH is definitely among the
most compact.
Accuracy [% of rate]
Viscosity [mm 2 /s]
+1,0
+0,3
+0,1
-0,1
-0,3
-1,0
100000
10000
1000
200
100
20
10
5
2
1
Linearity
1 10 50 100 150
Measuring Range
1
± 0,3 %
± 1,0 %
2
continuous operation
accuracy ± 0,1%
Flowrate [% of Q nom ]
short-term operation
± 0,1 %
± 0,3 %
1 10 50 100 150
200 mm 2 /s
20 mm 2 /s
2 mm 2 /s
sure vibrations), which are frequently
not even known, but
result in velocity changes in the
liquid. If the measuring accuracy
drops excessively outside the
specified flow rate, the entire
measuring result is often inexplicably
incorrect. The KRAL
Volumeter shows the actual
flow rate even under such conditions.
KRAL Volumeter ®
Specialty 3 – high measuring
accuracy under rough operating
conditions
KRAL Volumeters are extremely
sturdy. They are in-line flowmeters,
which is why there is no
exertion of force through directional
changes of the liquid. In
general, the KRAL Volumeter is
insensitive to system vibrations
and pressure pulsations. The following
diagram shows pressure
pulsations of a hydraulic fluid of
±50 bar superimposed on a static
operating pressure of approximately
160 bar.
OMK is equipped with plastic
screws made of PTFE and has a
casing of stainless steel. It is the
Volumeter that is chemically
resistant in a large number of
liquids and is employed especially
in aggressive and non-lubricating
liquids.
OMS (stainless steel) is entirely
made of stainless steel (1.4301
or 1.4401).
For individual customer wishes
we offer special designs and
special materials. These meters
are then designated OMX.
KRAL Volumeter ®
Specialty 1 – highly accurate
flow measurement
The market for sensors to register
process parameters is
huge. After temperature and
pressure measurement, the
demand for flow metering sensors
ranks in third position. Flow
sensors range from simple flow
monitors up to high-precision
flowmeters. KRAL concentrates
on the highly accurate flow measurement
in industrial applications.
Examples are flow measuring
tasks in development and
production test stands as well
as the consumption measurement
in industrial diesel
engines.
The Linearity diagram above
shows the measuring accuracy
of the KRAL Volumeter OMG
series. The linearity curve over a
wide range is situated in the
band around ± 0.1 % of the
measured value (yellow). This is
considerably below the limits of
± 0.3 % (orange area) applied by
calibration services.
Flowrate [% of Q nom ]
KRAL Volumeter ®
Specialty 2 – wide measuring
range
Many flowmeters achieve the
promised measuring accuracy
for a very small viscosity and
flow range. With the KRAL
Volumeter, the high measuring
accuracy of ± 0.1 % is maintained
over a wide range of viscosity
and flow. This is impressively
demonstrated by the “Measuring
Range” diagram.
This characteristic is important
for many industrial applications.
Although systems are frequently
designed for maximum values
of the operating parameters,
these vary in real operation. The
maximum permissible flow is
not permanent. In addition there
are often liquid pulsations (pres-
p
[bar]
200
100
10 20
Boring
30
Tunnel-boring Hydraulics
Return stroke
t [ms]
Prospects
In the next edition we will describe
applications where KRAL
Volumeter are employed because
of their special characteristics.
In the issue following that we
will show the KRAL Volumeter
in the environment of other flow
measuring methods.
Thomas Flauger
Product Manager Volumeter
15

ANNIVERSARY
KRAL Employee
statements
3 x 1 week Ski World Cup
in St. Anton and many other prizes
in the great KRAL anniversary raffle
Meeting where the greatest compete.
Participate and you will be part of it with a bit of luck.
Learning where there is work
Daniel Kullich, third year apprentice
mechanic at KRAL: “50
years means that the company
is steadfast. I wanted to
learn my trade in a company
where I will also be able to
work later on. As KRAL apprentice,
focus is on exact and
independent working. Always
knowing that help is there
when required. The varied
activities, the training program
and the modern infrastructure
form the basis of a
successful apprenticeship.”
It pays to be quick.
The first 50 entries each will
receive a quality pocket knife.
Therefore: Don’t even think.
Reply quickly. And be off with the
winning card to the post office.
Do it today!
Development fascinates
Herbert Hopp, with KRAL for
20 years, works in the screw
milling shop. To him quality
and responsibility are the driving
forces in his work: “It is
fascinating what is possible in
terms of development. I have
experienced that one faces
new challenges time and
again to achieve new performance
data. The more difficult
it becomes, the more
involved I am. Up to now we
have actually achieved everything
– this fills me with pride.
This forward thinking also provides
security for the future.”
3 x 1 week to the Ski
World Cup in St. Anton
From the 3rd to the 10th of
February 2001. For 2 people
including room with half board
and two tickets to the World Cup.
3 x glass design by
Reingard Kräutler
Unique designer pieces of highest
elegance. More about this in
the next INSIDE.
44 x filled backpacks.
If you know KRAL, there is a
chance of victory.
If you wish to participate, please
answer the questions on the
enclosed winning postcard. If
you have carefully read the
anniversary brochure KRAL
INSIDE, the answers to our
winning questions will come
very easily to you. We wish you
success and lots of luck!
Publication for business partners and employees of KRAL. Editor: Engineer Fritz Huber, Design: Ender Werbung
Kräutler GmbH & Co., Bildgasse 40, A-6893 Lustenau, Austria, Phone: +43 / 55 77/86644-0, Fax: +43 / 55 77 / 8 84 33, E-mail: kral@kral.at
16