The World’s Largest Range of Mass Flowmetersfile.yizimg.com/32651/2013120615071623.pdf · production of the first industrial Rheonik mass flow systems. Due to the quality and excellent

The World’s Largest Range of Mass

Flowmeters

www.rheonik.de - the mass flowmeter experts

ATEX

1

General Introduction

Rheonik Messgeräte GmbH has in excess of twentyyears experience in the field of Coriolis Mass Flowmeterdevelopment.In 1984, Dipl.-Ing. Karl Küppers began researching thepossiblities of mass flowmeter design which laterevolved to the patented Omega shaped Coriolis MassFlowmeters available today.

After long testing cycles for various construction types,the OMEGA shaped Torsion Swinger with its Mass Barsand Torsion Rods was brought to the Patent Offices.The design received its patent based on its uniqueoperational and construction features. Compared toother meters, this design offers outstanding advan-tages for both performance and reliability.

In 1986 Mr. Küppers founded the company RheonikMessgeräte GmbH in Maisach, Germany, to commenceproduction of the first industrial Rheonik mass flowsystems. Due to the quality and excellent perfor-mance, the success followed quickly and allowed thecompany to grow significantly. In 1993 the existingoffice space in Maisach needed to be extended by newoffices and production floors in Odelzhausen, close toMunich.

Today, Rheonik has the largest range of Coriolis massflowmeters in over 30 countries worldwide.

Index

General introduction 1

Coriolis force and the Rheonik range 2

Operating principles 3

Application examples 4

Sensor construction detail 5

Omega form advantages 6

Technical specifications 7

Reference list 9

Flow application questionnaire 10

Rheonik Messgeräte GmbH, Germany


Coriolis Mass Flowmeter Overview

2


The coriolis effect was first discovered by GustaveGaspard Coriolis during the 1830’s, and can beexplained as “the inertial force exerted on an object asa result of movement relative to a rotating frame ofreference.” Since discovery, it has been applied to ballistic missile trajectories, hydraulics, machine performance, ergonomics, ocean and atmospheric circulations.

The use of coriolis force as a technique for liquid andgas mass flow measurement has been firmly estab-lished for over 20 years. During this time a number ofdifferent configurations and technological signal processing advances have been made. Rheonik are atthe forefront of these with the world’s largest range.It is worth noting that only the Rheonik range has allof the capabilities listed below:-

·· Measurement of liquids, sludges, suspensions and gases

·· Flow rates from 0.03 kg/h to 1,500,000 kg/h

·· Diameters up to 12” / DN300

·· Pressure over 890 bar

·· Temperature from -200°C to +400°C

·· Fiscal approval (OIML R117)

·· ATEX and CSA hazardous areaapprovals

·· Extremely resistant againstentrained gas bubbles in mediacompared to conventional meters

·· Unaffected by viscosity, density and pressure pulsations

·· Density measurement

·· Available in stainless steel, hastelloy, monel, tantalumand other materials on request

Coriolis Force and the Rheonik Range

A dedicated service department of specialist safety andoffshore certified service engineers allows Rheonik tooffer a complete service from best-fit technology identification right through to commissioning. Factorytrained field and workshop based engineers providecomprehensive telephone and world-wide coveragesupport.

The Rheonik range is characterised by its unique andpatented omega tube element, which allows the mostchallenging of applications to be solved. The omegatube has a torsional, swinging movement, rather thanthe bending motion traditionally associated with coriolis. This allows increased tube wall thickness, andtherefore exceptional resistance is achieved against toabrasion, operating under high pressures, as well aseliminating the requirement for the secondary containment often associated with other elementdesigns.

Coriolis in action at an olive oil canning factory

Highly accurate truck filling station with RHM 60 FNT for custody transfer


The patented meter design is the key to the flexibilityof the Rheonik range in terms of applicability and accu-racy. Each flowmeter has two measuring tubes, whichare parallel to one another and are formed into theunique omega shape.

The oscillating system is completed by the two highmass cross bars and the vertically mounted torsionrods:-

i) The high mass bars stabilise the torsional movement, helping to eliminate any effects from external vibration and allow continuous operation even in the presence of damping factors such as gas bubbles or non-homogenous media and vibration.

ii) The torsion rods which are connected together at both ends, minimise stress, guide tube movement and help “energise” the torsional motion.

This carefully balanced, but essentially rugged configuration has extremely low power consumptiontypically below 300mW. Fundamentally the system isso well balanced that once energised the systemapproaches perpetual motion. The natural frequency ofthe oscillating system largely depends on the mass ofthe cross bars and the modulus of elasticity of the torsion rods.

Operating Principle

Excitation of the oscillating system is via a pair of electromagnetic drive coils, which have a controlledamplitude. The system is symmetrical which meansthat the internal acceleration forces of the media arecounterbalanced. When liquid or gas flows through theoscillating omega tubes a corresponding coriolis forceis generated, this causes a phase shift between thetwo omega tubes. The degree of this phase shift isproportional to the mass flow and is detected by a pairof pick-up coils located at the top of the omega tube,where there is the greatest tube movement.

This can be better understood by envisaging the oscillation of the measuring tubes, the upper semi cir-cle of the omega tube, as if it were taking place uponan imaginary disc, where point “a” and “b” are positioned on the circumference. Media starting atpoint “a”, moving along the imaginary disc toward “b” passes through orbits of differing velocities. The addi-tional Coriolis force “FC” acting in the plane of the disc,perpendicular to the movement of mass on the disc(a-b), is directly proportional to mass flow. This forcecauses an additional deflection of the tubes and issensed as a phase difference between the outputs ofthe two pick-off coils.

real massflow

measuring tube

oscillatingmovement

cross bar

imaginarydisctorsion rod

FC FC

effective massflow ab

4


Application Examples

The patented design of the Rheonik mass flow meter iswhy it is one of the most versatile meters available inproduction today, manufactured for the largest appli-cation scope, without compromising performance. Therange of meters have been optimised in both physicalconstruction and method of operation to suit their cor-responding applications which range from extremelylow flow conditions of 0.001kg/min in laboratory condi-tions to 25000 kg/min on high end flow applications.

The physical construction of the meter makes it suitable for applications where excessive process conditions are involved with temperatures as low as–200°C or in excess of 400°C and pressure over 890bar. Combine this with EEx ia IIC, EEx de IIC (ATEXand CSA) & Fiscal (OIML R117) approval and the avail-ability of exotic materials of manufacture such asHastelloy & Tantalum, and you have a range of massflowmeters which can solve the most challenging appli-cations over the widest scope.

The flowmeter tube wall thickness is also very heavycompared to other designs and usually reaches at leastthe same schedule as the process pipeline so concernsover corrosive or abrasive applications are eliminated.As is the need for any secondary containment, which iscommonplace with alternate meter designs.

A sample of applications where the Rheonik coriolismass flowmeter has been successfully installed isshown below:-

fig. 1

fig. 2

·· Liquid oxygen flowmetering (fig. 1)

·· Pilot plant (fig. 2)

·· High pressure CO2

·· First liquid hydrogen filling station

·· Asphalt blending station (bitumen at 363°C)

·· High accuracy filling station for custody transfer (fig. 3)

·· High quantity HCL metering Tantalummeters (fig. 4)

·· High temperature metering solutions(fig. 5)

fig. 3

fig. 4 fig. 5

5

The performance of the Rheonik mass flow meter liesin the unique construction of the sensor and the strictquality procedures that are adhered to during manufacture.

All parts of the Omega tube, including the base plate, are vacuum soldered. Where applicable, theIP65 housing covering the sensor is screwed andsealed by an O-ring against the base plate. Flanges may be directly welded onto the tube ends tohelp avoid any sealing, which can be a concern forapplications involving toxic or lethal media.

Sensor Construction Detail

The pick off coils for sensing tube movement and thedrive coils which energise the tube are constructed ofpolyimidisolated wiring moulded in epoxy resin. ThePT-100 temperature sensor is mounted via a connec-tion board directly into the terminal box. Systems forhigh temperature applications of up to 400°C haveceramic isolated wiring and adhesive, with terminalsand all other connectors being of stainless steel construction.

For convenience the Rheonik sensor can be dividedinto three separate parts, each of which has a distinctfunction. Combining to mass flow accurately, reliablyand safely. (see facing page)

Omega Form·· Design permits increased tube

wall thickness

· · Active measurement section is entire top half of omega tube - totally decoupled from process

·· Acts as part of the torsion swing system

·· Requirement for secondary containment is eliminated!

Patented Torsion Rod·· Helps energise torsion oscillation

· · Guides tube movement

·· Minimises stress

·· Produces extremely good signal to noise ratio for best accuracies at low flow conditions

Pickup coils

Dual Cross Bar Support·· Reduces susceptibility to

external vibrations

· · Stabilises torsion movement

·· Works in conjunction with torsion rods to generate harmonic oscillation - tuning fork perpetual motion

Tube loops

Drive coils

Mass bar

Torsion rod

Electrical junctionbox

Process connection

Removal flange manifold (also sealless available)

Process connection


6

Process connection blockThe Rheonik sensor is designed to adapt toexisting piping. Connection flexibility isachieved through the use of a detachableconnection block that is independent fromthe rest of the sensor. As such it may beeasily modified to suit individual specifica-tions and safety requirements.Alternatively, the block can be seallesslyconnected to the meter.

The connection block has two general variantsdesigned to ensure the omega tube is used ineither a parallel (lower pressure drop) or serial(continuous) tube configura-tion. The serial configuration issuitable for non-homogeneous,sanitary applications orfor medias where thereis a chance of plug-ging. In addition thisconfiguration has minimumcrevices and is compatible withmost CIP procedures.

Product Supply Tubes After the fluid has passed the connection block,it flows through the product supply tubes. Thisportion of the sensor helps to condition the flowfrom the connection block into the measuringtubes. The length and shape of the productsupply tubes are designed specifically to ensuremaximum sensor stability and minimum stress.

Measuring TubesOnly the lower half circle (the measuring tube)of the omega is used in the mass flow measure-ment which are driven in a rotary motion by theoscillation system. A characteristic feature of theRheonik range is that the measuring tubes arestationary in relation to the oscillating motion ofthe sensor. Thus the measuring tubes are solelydedicated to measuring the mass flow, freefrom the influence of ambient factors or processconditions.

Omega FormAdvantagesIncreased Wall ThicknessThe omega tube and consequent torsional movementallow the Rheonik range to have the thickest tubewalls of any coriolis meter currently available. This hasadvantages in applications where corrosion or theeffects of abrasion are a cause for concern. The rotarymotion ensures that the bending forces required byother designs are eliminated, and it is these bendingforces that are the limiting factor on the wall thicknessof alternative tube designs. Consequently there is norequirement for secondary containment as the omegatube has a wall thickness at least equal to that of thesurrounding pipework. No loss of accuracy is observedunder changing pressure conditions and very high sta-tic pressure applications can be solved without anymodification to the process.

Large Active Measurement SectionThe entire top half of the omega tube is used for measurement. The relatively large movement in themeasurement plane and consequent high signal amplitude results in unrivaled sensitivity with low flowsdown to 0.03kg/hr and accuracy up to +/-0.1%. Asthe active measurement section is located away fromthe process connection, heat dissipation and vibration

do not present any problems. Its spherical shape isalso highly resistant to deformation, and thus theprocess pressure does not affect the system amplitudewhich is a source of inaccuracy with other tubeshapes.

Integral Part of Torsional MovementThe torsional movement associated with the Rheonikrange is clearly what distinguishes it from other coriolisdesigns, with the patented omega tube providing thebasis for this measurement technique. Any external vibration has a tendency to be in the horizontal or vertical plane but generally not of a torsional naturethus the use of torsion measurement ensures virtuallyno effect from vibration and a stable output.

DensityA number of models within the Rheonik range havethe option of a density output. Calculation of density isderived from the base oscillation frequency - the heavier the Omega measuring loops become the lowerthe base oscillation frequency. Thus heavier densitiesentering the measuring loops create a measurablelower oscillation frequency.

Unique Features


Parallel Single Path/Sanitary Parallel For temperatures Threaded (1/3) Flanged(kg/min) (kg/min) (kg/min) up to 120°C

RHM015(4) 0,004 - 0.6(5) 0,002 - 0.3(5) 0,6 300 (400) G ¼” DN15 / ½”

RHM03 0,1 - 5 0,05 - 2,5 5 300 (150) G ¼” DN15 / ½”

RHM04 0,2 - 10 0,1 - 5 10 150 G ¼” DN15 / ½”

RHM06 0,5 - 25 0,25 - 12,5 20 380 (190) G ½” DN25 / 1”

RHM08 1 - 50 0,5 - 25 50 300 G ½” DN25 / 1”

RHM12 2 - 100 1 - 50 75 190 (290) G ¾” DN25 / 1”

RHM15 4 - 200 2 - 100 150 150 (300) G ¾” DN25 / 1”

RHM20 6 - 300 3 - 150 300 110 (225) G 1” DN50 / 2”

RHM30 12 - 600 6 - 300 500 150 (225) G 1½” DN50 / 2”

RHM40 30 - 1500 15 - 750 1250 40 (250(6)) -- DN80 / 3”

RHM60 60 - 3000 30 - 1500 2500 40 (200(6)) -- DN100 / 4”

RHM80 160 - 8000 80 - 4000 5000 40 (100(6)) -- DN150 / 6”

RHM100 240 - 12000 -- 10000 40 -- DN200 / 8”

RHM160 500 - 25000 -- 23000 40 -- DN300 / 12”

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Technical Data for Sensor Units

(1) NPT available on request (4) Types RHM 007 and 01 are replaced by RHM 015 (7) Pressure rating in (brackets) refers to(2) Standard meters only. Special (5) With fine tuning: parallel 0,002 - 0,6 [kg/min] heavy duty or special versions

range available on request (option on request) sanitary 0,001 - 0,3 [kg/min](3) Standard version with PTFE sealing (6) Max. pressure rating of tube (fitting to be clarified)

up to RHM30, different sizes available

For the selection of a suitable meter size, considering the relevant pressure drop, and other process conditions, please contact us.

Accuracy:

Range 1:20 ±0,2% of rate and better

Range 1:50 ±0,5% of rate and better

Repeatability better than ±0,1% of rate

Gold Line models are fine tuned for your application

Range 1:5 ±0,10% of rate and better*

Range 1:10 ±0,15% of rate and better*

Repeatability better than 0,05% of rate*

*Only selected models available as Gold Line - consult factory

Accuracy, Repeatability (Reference conditions (incl. zero drift): H20, 1 bar, 20°C - Range is turn down from nominal flow rate). Special calibration and fine tuning with enhanced accuracy in customer flow range is possible - including low flowrange.

Above data table covers Rheonik standard program only. Please specify your special requirements.All meters carry CSA and ATEX hazardous area approvals. All standard versions comply with new

European pressure directive PED

General Technical Specifications:

Pressure rating According to above table (for normal temperature version)Please note: pressure ratings decrease with higher temperature ratingHigher pressure ratings are available on request (up to 1000 bar)

Temperature range RHM type Temp. in °C Temp. class (for EEX ia IIC version)Normal NT -20 to + 120 T4 - T6Extended 1 ET1 -200 to + 50 T6 (Ex-approval for T> - 45°C only)Extended 2 ET2 -45 to +210 T2 - T3High HT 0 to + 350 T1 - T3Very high VHT 0 to +400 No EEx/only selected sizes

Materials of wetted Standard 1.4571 (316Ti) / 1.4539 (904L), Hastelloy, Tantalum, Monel, Inconnel

General Description/Data:Type Typical measuring range (2) Nominal rate Pressure rating (7) Standard Process Connections


8

General Description:

Technical Data for Remote units

Basic version is microprocessor based with free scalablepulse output via rotary switches. Outputs include flowpulse, error, flow direction (status outputs also indicated via LED). These units can be configurated forvery fast response time (up to 60ms, depending onsensor type)*The RHE 06F+ has double pulse output with 90°phase shift.

RHE 01.03Plastic housing for wall mountingProtection class: IP54Power supply: 230/115 VAC, 24 VDCDimensions: 190x190x140mm

RHE 06/06F+ (ATEX, approved)Alum. housing painted, for wall mountingProtection class: IP64Power supply: 230/115 VACDimensions: 200x200x110mm

RHE06F has PTB/OIML custody transfer approval

These remote transmitters are easy to program andprovide self-diagnosis of set up parameters in plain. Features include low flow cutoff, response time, in/outputs, units etc. All settings are stored in a non-volatile memory, with all inputs/outputs being galvanically isolated (digital outputs via open collector photocoupler).

RHE 07 (ATEX, CSA optional)Rack version (1/3 19” - 28TE 3HE)Protection class: IP20Power supply: 230/115 VAC, 24 VDCDimensions: 142x128x250mmRHE07C has NMi/OIML custody transfer approval

RHE 08 (ATEX, CSA optional)Alum. housing painted, for wall mountingProtection class: IP64Power supply: 230/115 VAC, 24 VDCDimensions: 207x148x302mm

RHE 11 (ATEX, CSA optional)(1)

S.S. housing for wall, hook or meter mountingProtection class: IP65Power supply: 230/115 VAC, 24 VDCDimensions: 244x225x200mm

RHE 07/08/11Programming: Free programmable via 3 photo sensors,

pushbuttons, µP based remote unit

Analogue 2 programmable 0/4-20 mA (flow, outputs: density, temperature, volume)

Galvanically isolated, max. load < 1000 Ohm, Accuracy + 0,05% of full scale

Digital 1 frequency / pulse output (0-10000Hz, max. 30V/50mA), 3 status outputs (limit, error/alarm, flow direction etc.)

Digital inputs: 2 status inputs (zeroing, hold totalizer, tot. reset, quit error/alarm)

RS232/422/485: Serial interface optional. For details see individual datasheet.

LCD display: 2 lines, each 16 characters (character height 8mm)

RHE 12Programming: Via 2 photo sensors behind the glass

cover

Analogue outputs: 1 programmable 0/4-20 mA output,gavanically isolated(intrinsically safe optional)

Digital outputs: 1 frequency / pulse output (intrinsically safe optional)Error / Alarm condition output (22mA)HART optional, RS232 / 485 on request

LCD display: 2 lines, each 16 characters (character height 8mm)

RHE08/11/12 are available with HART functionality

General Data for all Remote Units:

Temperature range: -40 to 60°C RHE 06, RHE 06F+, RHE07 and RHE 08 remote units havePower consumption: < 15 Watt / RHE12 < 5 Watt to be installed outside of hazardous area.

RHM can be installed in hazardous area ATEX de [ia] IIC RHE 11/12 can be installed in the hazardous area

RHE 12 (ATEX, CSA optional)(2)

S.S. housing for wall, hook or meter mountingPressure safe painted aluminium housingProtection class: IP66Power supply: 24 VDCDimensions: dia. 115mm

height 200mmLCD display (servicing via 2 photo sensors)


(1) CSA by mid 2003 (2) CSA by end 2003

Reference list

CLIENT MEDIAAMEC / BP MAGNUS PROJECT HYDROCARBON

AMEC/BP E4 PROJECT/FOXBORO WATER

AMERADA HESS LNG

BAYER TEST

BP / PALPRO SCALE INHIBITOR, H2S SCAVANGERCORROSION INHIBITOR

BRAN & LUEBBE UK SCALE INHIBITORWATER BREAKER

CANNON VIKING HCL SOLUTIONPOLYOL MIX

CELOTEX POLYMER

CELTIC CATALYST

DALLING AUTOMATION ISOCYANATE, POLYOL

DEVRO-TEEPAK VEGETABLE DYE, GLUTERALDEHYDE

DOW CORNING HYDROGEN, DPR (LIQUID)CHLOROSILANES, WATERSILOXANE HC1

DOW KVAERNER 20% HCL/WATER

ENICHEM GAC13L

EUROPEAN VYNLS CORP HCL/VCM/EDC, ORGANICSCRUDE EDC

FIRESTONE POLYOL, ISOCYANATE

GENERAL ELECTRIC NATURAL GAS

GREAT LAKES CHEMICALS BROMINE

IMPERIAL COLLEGE, LONDON LIQUID NITROGEN, LIQUID PROPANE

JACOBS MONTELL / SHELL CATALYST SLURRY

JORDAN KENT METERING SYSTEM HYDROCARBON COND.

KINGSPAN IRELAND WATER & HCL

KINGSPAN UK SULFURIC ACID 58%, PHENOLIC RESIN

KVAERNER / SINOPEC INT ACETIC ACID, PARAXYLENESLURRY

MARATHON OIL METHANOL

NRC BOTT FREON 22

OMS ISOCYANATEPOLYOL

PHARMACIA & UPJOHN, CORK DICHLOROMETHANE, ACETONE, DMSO, ETHO-ORTHO-FORMATE, HYDROGEN BROMIDE, ACETONE, DMSO

PHILLIPS PETROLEUM / JADE SCALE INHIBITORMETHANOL

PILKINGTON TECHNOLOGY WATER & ORG SOLVANT

SHELL OFFSHORE CONDENSATE

SLP MONOETHYLENE GLYCOL

TARGOR ALUMINIUM TRIETHYL

TOTAL FINA ELF BITUMEN

UNI F. BEECHAMS CO2 SUPERCRITICA, BROMINE, LIQUID COOLANT, NITROGEN, HCL 20%


FLOW BY Centrifugal pump Tr/min Piston pump Strokes/min Gravimetric Others

(If not listed below, please specify)

Please specify type of industry i.e. plastic industries

Please specify purpose of measurement

General flow control Filling process Custody transfer Flow detection/flow switch

Dosing Else

Process connection Flange/Threads Others

Material of wetted parts* 1.4571/316 Ti (1.4539/904L) Hastelloy C22 Tantalum

Others

Construction design Parallel tubes (std) Single path Sanitary

Area classification Safe Hazardous

Distance sensor-transmitter Meters/Feet Transmitter in safe area? Yes No

10

Flow Application Questionnaire

Application Data

Contact: Qty. of meters:

Company: Delivery date:

End user/location: Telephone no.:

Address: Email address:

Tag No: Liquid Gas

Process medium:

Minimum Normal Maximum

Flow rate kg/min or lbs/min

Viscosity at cP or cStprocess temperature

Operating pressure bar or psi

Operating density kg/m3 or lbs/gal

Process temperature °C or °F

Max. allowable pressure drop bar or psi

Flow Sensor Requirements

Transmitter Requirements

Supply voltage 230 VAC +/- 10% 115 VAC +/- 10% 24 VDC +/- 10%

Output/interfaces 4/20 mA Impulse (1-10 kHZ) HART (not for RHE 07)

RS 232 RS 422/485 (not for RHE 11)

Display/totaliser Yes No

Mounting Wall mount Panel mount Others

Comments

*please note that RHEONIK takes no responsibility for the choice of material


T h e w o r l d ’ sl a r g e s t r a n g e o f m a s s f l o w m e t e r s

Rudolf-Diesel-Str. 5, D-85235 Odelzhausen/Munich, Germany Tel:+49 81 34 93 41 0 Fax: +49 81 34 93 41 41 Email: [email protected]

Rheonik Messgeräte GmbH

W o r l d w i d e d i s t r i b u t i o n

a n d s e r v i c e

N o o t h e r d e s i g n o f f e r s s u c h v e r s a t i l i t y

a n d r a n g e a b i l i t y

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Documents

The World’s Largest Range of Mass Flowmetersfile.yizimg.com/32651/2013120615071623.pdf · production of the first industrial Rheonik mass flow systems. Due to the quality and excellent