KRAL Volumeter - OME Series. Economy Flowmeters - E: www.icenta.co.uk
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
KRAL Volumeter® – OME Series.
Economy Flowmeters.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 E: sales@icenta.co.uk www.icenta.co.uk
OME – Economy
OME.
Operating conditions and materials.
A unique concept for economical
precise flow measurement. Flow range: 0,1 to 150 l/min.
Max. pressure: 40 bar.
Temperature range: -20 °C to 100 °C.
Viscosity range: 1 to 1x106 mm²/s.
Liquid: Chemically neutral,
lightly lubricating, clean,
non-abrasive.
Accuracy: ±0,1% of rate.
Casing: Anodized aluminum.
Screws: Nitrided steel.
Bearings: Bearing steel.
Seals: Viton®.
High measuring The advantage of the
Favorable price. Optimum design. accuracy. spindle principle.
In the international market- With the complexity of flow Even with reduced oper- Positive-displacement flow
place, you are faced with meters it is sometimes dif- ating parameters many measurement with this
severe price pressure. Sav- ficult to include all the re- applications require high principle is proven and it’s
ings can start when pur- quirements for various ap- accuracy. measurement is extremely
chasing individual compo- plications. The reenginee- precise. An exactly defined
KRAL Volumeter Series
nents. red design of the OME volume is continuously filled
OME offers high laboratory
is optimized for efficient and evacuated. The number
We recognized that not all measuring accuracy under
production. of fillings results in the flow.
our customers needed the extreme conditions. The
This easily understood prin-
wide pressure and temper- roduction:
P linearity diagram from page
ciple has important ad-
ature capabilities of our The aluminum housing 5 and the measuring rate
vantages compared with
original OMG series. That can be completely ma- program from page 6
others:
is why we created the pat- chined on one machine shows the high level of
No Flow-conditioning –
ented OME design, to without repositioning measurement accuracy
no straight runs of piping
provide an excellent flow- or retooling. over a wide range of flow-
upstream or downstream
meter value for the large rates.
he components:
T of the meter is required.
segment of our customers
Instead of the standard The measuring chamber All KRAL Volumeter can
with lower flow, pressure
pole wheel, flow pulses is produced to high accu- measure bi-direction-
and temperature require-
are taken from the spin- racy. The sensor is po- ally, simplifying other-
ments.
dle directly, thus reducing sitioned outside of the wise complex measure-
the number of parts in measuring chamber and ment tasks.
the meter. has no influence on the Due to the nearly zero
precisely defined meas- starting measurement
By using an aluminum
uring chamber volume. and the wide measure-
housing, fewer parts, and
ment range; KRAL
precision machining, the
Volumeter are ideal for
OME is just what you
dispensing processes.
need… not less, not more.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 2E: sales@icenta.co.uk www.icenta.co.uk
The solution.
Economical
all-round flowmeter.
No flow conditioning.
The OME is specialising
in customers with lower No straight piping is nec-
flow, pressure, and tem- essary upstream or down-
perature requirements, stream of the meter.
who welcome the favour-
able price. Installation at
any angle and direction. Bi-directional
flow measurement.
Because of the operating
High accuracy. principle, bi-directional flow
can be measured. With
Because of the precision
a flow direction sensor, a
measurement chamber,
change of the flow direction
extremely accurate meas-
or brief reverse flow can be
urements are possible.
detected and measured.
Precision spindles for
wide flow and viscosity
ranges.
Standard output signal.
The flow sensor output
Compact design.
signal is an industry
The axial arrangement of standard square wave.
the measurement system
allows laminar flow with no
change in direction making
it a very compact design.
Various connections.
Available are:
Pipe thread.
DIN flange, ANSI, SAE
and JIS.
Custom.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 3E: sales@icenta.co.uk www.icenta.co.uk
OME – Selection of Size
The following
questions can assist
you in selecting an
OME meter. Explanation. Instructions. Notes.
Which size is suitable The selection of the From the Size table, The value of flowrate
for the flow range to be correct size ensures a long select a size, OME 13 - 32, [% of Qnom] is used in the
measured? service life, high measuring whose nominal flow rate, following diagrams. Draw
accuracy and an excellent Qnom, is near that of your a line downward from this
cost-utilization ratio. application, Qapp. value to intersect the same
Then calculate flowrate in value in the other diagrams.
[% of Qnom] using the Moving the line left or
equation shown at right. right shows the effects of
meter size on load rating
and linearity.
Does the selected Service life and pressure In the Load rating The range of short-term
unit have the required drop are important factors diagram, find the inter operation can be purposely
service life? in selecting a meter size. section point of the viscos- used for short times, such
Verify that your selection ity [% of Qnom] and flow as a load reserve or safe-
What is the
will meet your expectations rate [mm²/s] for your appli- ty factor.
pressure drop?
of service life and pressure cation. To the left of this
drop. For increased service point, find the pressure
life and reduced pressure drop for the nominal flow
drop, select a larger size. of your application. The
This will reduce the flow color range where the point
rate [% of Qnom] for a lies signifies either continu
given application. ous operation (yellow) or
short-term operation (red).
For meters larger than
A point in the white range
size 32, the OMG Series
is not a recommended
of Universal flowmeters is
load rating for an OME.
available.
What is the measuring High accuracy is expected With the viscosity [% of The OME begins measur
accuracy of the selected from PD meters. The OME Qnom] and flowrate [mm²/s] ing at an extremely low
unit? delivers excellent accuracy you can obtain the meter flowrate, due to very low
over a wide range of flows. accuracy curve from the slippage past the spindles.
For the highest accuracy, Linearity diagram. Yellow As viscosity increases, so
linearization is possible. range signifies: The device does the linear region of
The KRAL BEM 500 can operates within the range the accuracy curve.
linearize the meter's of maximum accuracy of
performance curve for a ±0,1% of rate. Orange
defined viscosity. Special range signifies: The meter
calibration may be required. accuracy is within the lim-
its of ±0,3 % of rate.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 4E: sales@icenta.co.uk www.icenta.co.ukSize. Qnom [l/min]
10 OME 13
Qapp 30 OME 20
[% of Qnom] = x 100 50 OME 24
Qnom
100 OME 32
1 10 50 100 150 Flowrate [% of Qnom ]
Load rating.
100000 50000 10000 5000 mm2/s 2000 mm2/s
20
15
1000 mm2/s
Pressure drop [bar]
10 500 mm2/s
Short-term operation 200 mm2/s
5 100 mm2/s
50 mm2/s
10 mm2/s
Continuous operation
0 5 mm2/s
1 10 50 100 150 Flowrate [% of Qnom]
Linearity.
+1,0
Accuracy [%] related to measured value
+0,3
+0,1 200 mm2/s
-0,1 20 mm2/s
-0,3 2 mm2/s
-1,0
1 10 50 100 150 Flowrate [% of Qnom]
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 5E: sales@icenta.co.uk www.icenta.co.ukAre the precision and The OME combines 1 This is where Yellow range signifies:
sturdiness of the service life and accuracy accurate operation of Best combination of
KRAL Volumeter® fully to produce a measuring the OME starts. accuracy and service life.
utilized? range of unmatched
2 The OME can be Orange range signifies:
magnitude. Since normal
operated continuously up The meter is suitable for
flow conditions are never
to this line. continuous operation with
static, a wide range of
an accuracy of ±0,3 %
acceptable viscosities and Notice the wide range
of rate.
flows is important for of conditions where the
precise measurement. OME will measure with a Red range signifies:
linearity of ±0,1% of rate. Short-term Operation. The
The Measuring range
linearity will be within
diagram provides a visual
±0,1% of rate.
impression of the wide
measurement range
available with a KRAL
Volumeter.
Measuring range.
100000
10000
1000
200 2
Short-term operation
100
Viscosity [mm²/s]
20
Continuous operation ± 0,1 %
10
5
1 ± 0,3 %
Linearity ± 0,1% ± 0,3 %
± 1,0 %
2
1
1 10 50 100 150
Flowrate [% of Qnom]
The measuring range diagram is copyright protected internationally.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021
6
E: sales@icenta.co.uk www.icenta.co.ukTechnical data. OME 13 OME 20 OME 24 OME 32
Flow
Qmax l/min 15 45 75 150
Qnom l/min 10 30 50 100
Qmin l/min 0,1 0,3 0,5 1
Pressure
bar 40 40 40 40
pmax
Temperature
°C -20 to +100 -20 to +100 -20 to +100 -20 to +100
tmin…tmax
Viscosity
mm²/s 1 to 1x106 1 to 1x106 1 to 1x106 1 to 1x106
νmin…νmax
K factor
Imp/l 1214 321 191 78
K
Frequency
Hz 202 161 159 130
f at Qnom
Dimensions / Weights. OME 13 OME 20 OME 24 OME 32
G inch 1/2“ 3/4“ 1“ 1“
G
p bar 40 40 40 40
M12x1
l mm 110 145 165 200
l1
l
d mm 45x45 55x55 60x60 70x70
l1 mm 65 95 105 140
d
m kg 0,6 1,1 1,8 2,7
DN mm 15 20 25 25
DN
PN bar 40 40 40 40
M12x1
L mm 105 135 150 185
L1
L
D mm 95 105 115 115
L1 mm 65 95 105 140
D
m kg 1,1 1,6 2,2 3,1
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 E: sales@icenta.co.uk
7
www.icenta.co.ukKRAL Electronics.
Industry standard KRAL Electronic KRAL Industrial PC
Sensor selection. signals. BEM 300 and BEM 500. BEM 900.
You have the choice bet- The BEG 40 sensor supplies
ween a PNP sensor for PNP square wave signal.
standard applications and The BEG 41 -sensor
an -sensor for use in produces a Namur signal.
explosive areas. Both of these can be
processed by standard
industrial interfaces.
For display of flowrate For complex applications
and consumption, the with up to 16 KRAL Volu-
BEM 500 is an effortless meter connected, the pre-
solution. The compact programmed BEM 900 is
unit is designed by KRAL a perfect complement to
to support the Volumeter OME. Beside flow and
as well as our various consumption measure-
applications. BEM 300 is ment, this solution offers
the economy single flow- monitoring and data ac-
meter device. quisition and evaluation.
Sensors. BEG 40 BEG 41
Size
M12x1
PNP square wave Namur sine wave
System
inductive inductive
Material PBTP PBTP
Pressure
bar 40 40
pmax
Temperature
°C -30 to +100 -30 to +75
tmin…tmax
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 8E: sales@icenta.co.uk www.icenta.co.ukSuccessful application with the
KRAL Volumeter® OME.
Returnability of the
OME for OEM. Gasoline application. Liquid blending. measurement.
KRAL is a supplier to many Liquid: gasoline. Liquid: changing. Each KRAL Volumeter is
original equipment manu- Flow: 0,05 to 5 l/min. Flow: 2 to 50 l/min. tested and calibrated on
facturer (OEM) accounts. Pressure: 40 bar. Pressure: 16 bar. our in-house test bed.
These customers look for Temperature: -20 to 75 °C. Temperature: -20 to 60 °C. Depending on customer
high flow measurement Viscosity: 1,14 mm²/s. Viscosity: 0,5 to 10 mm²/s. requirements, we per-
accuracy and consistent Measuring instrument: Measuring instrument: form either a factory
delivery. OME 13. OME 24. calibration or a calibration
in compliance to ÖKD
With an optimized design, An automotive industry Blending liquids is a com-
(Austrian Calibration
OME flowmeters can be supplier needed the best plicated task for a flow-
Service).
manufactured quickly and possible solution for meter. First, a wide flow
delivered on-time in large testing the flow through range needs to be meas The factory calibration is
quantities. automotive fuel pumps ured accurately. For custody KRAL Standard. Special
during production. The transfer purposes, no loss standards requirements
Our customers enjoy the
advancements in automo- of accuracy is tolerated. are also possible. As ex-
simplicity and lightweight
tive design required high Second, with different ample, by adding further
design of the OME. Instal-
measurement accuracy of liquids and temperatures, measurement points.
lation is simple because of
low viscosity fuel over a the flowmeter must meas ÖKD calibrated Volumeters
the meter's compact and
wide measurement range. ure accurately over a wide are delivered to ISO IEC
lightweight design. Without
range of viscosities. Third, EN 17025 standards.
the need for upstream or Our Economy flowmeters
the measuring chamber The measured values
downstream straight pip fulfilled these requirements
must be small to minimize are traceable to national
ing, OEM customers can and are now an integrated
inadvertent mixing of standards. The meas-
place the meters within part of our customer's
dissimilar products. urement uncertainty of
complicated systems easily. production system.
national standard to test
Other flow meter designs,
unit is specified.
which cause large zero-
fluctuation readings, can Our certified QA system,
generate measuring errors. in accordance with
EN ISO 9001: 2000, gua-
rantees the highest qual-
ity and delivery reliability.
icenta Controls Ltd
Tel: 0845 895 1020 Fax: 0845 895 1021 9E: sales@icenta.co.uk www.icenta.co.ukYou can also read
