coriolis mass flow meters - comhas · 2 3 coriolis mass flow metering is based on the physical...
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Badger Meter Europa
®
Coriolis mass flow meters
32
Coriolis mass flow metering is based on the physical principle that a force, the so-called Coriolis force, acts on a mass that is moving towards or away from the point of rotation within a rotating system. The symmetrical arranged measuring tubes 1 and 2 are vibrated against each other in the X and Y axis. The limbs RS 1 and RS 2 of the measuring tube 1 and the limbs RS 1 and RS 2 of the measuring tube 2 oscillate on a circular segment in case of zero flow.
Q
Kc
Kc
1
RS 2
RS 1
2
y
x
ww w
QA
v =
Measuring principle
A Cross section of pipe
M Mass
w Angular velocity
v Flow velocity
Q Flow
Kc Coriolis force
1 and 2 Measuring tubes
RS 1, RS 2 Limbs
Coriolis mass metersCoriolis mass meters are recommended for the direct, continuous measurement of the mass
of flowing liquids independently of their conductivity, density, temperature, pressure and
viscosity in the food, chemical and petrochemical industries. They are best suited to measure
chemicals, liquid food, suspensions, molasses, inks, lacquers, pastes, etc.
Simultaneous measurement of:
• Mass flow
• Density
• Temperature
The Badger Meter RCT1000 Coriolis mass flow meter identifies flow rate by directly measuring fluid mass over a wide range of temperatures with a high degree of accuracy. For fluids consisting of two liquids or a liquid with suspended solids, the RCT1000 Coriolis system can derive the concentration and mass
Coriolis RCT1000 mass flow meters
of each fluid based on the density measurement. Furthermore, the unobstructed, open flow design makes it suitable for a variety of fluids such as slurries and other viscous, nonconductive fluids that are difficult to measure with other technologies.
Advantages:
• Unobstructed open flow design• Low-maintenance operation with no
free-moving parts• ModBus® RTU, ModBus® TCP/
IP, HART®, EtherNet I/P network options
• Advanced fluid diagnostic tools • Batching and PID control
Hazardous location transmitter
Advanced software
Specifications
Pipe size 1.6 – 76.2 mm (1/16 – 3“)
Accuracy Liquids: up to± 0.1% of flow rate
Density: up to± 0.0005 g/cm3
Zero stability up to± 0.025% of full scale
Repeatability up to± 0.05% of flow rate
Process temperature range -40 – 200° C (-40 – 392° F)
Wetted material 316L stainless steel
Application General area or hazardous location
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Bottom view
Δ T = 0
Bottom view
Δ T > 0
• Chemical
• Pet food
• Textiles
• Combustion control
• Asphalt
• Engine test stands
Applications
Unlike many flow measurement technologies, Coriolis mass flow meters can directly and accurately measure the mass flow of fluids over a wide range of fluid temperatures and viscosities. The Coriolis design and measurement principle allows the meter to be an exceptional device in measuring:
• Vegetable oils and fats• Homogeneous suspensions and slurries• Adhesive, glue or binding materials• Coatings and hardeners• Dyes, fragrances, vitamins and other additives• Oil and fuels
Operating principle
Types of measurement
Mass flow rate Derived from the phase shift between inlet and outlet sensing coils
Density Derived from vibration frequency
Temperature Measured and used to correct for changes in the stiffness of the vibrating tubes
Coriolis flow meters simultaneously measure mass flow rate, density and temperature. As fluid flows through the vibrating sensor tube, forces induced by the flow cause the tube to twist slightly. These small deflections are measured by carefully placed sensors. A phase shift occurs between sensor signals that is directly proportional to mass flow rate. As the fluid density varies, the resonant frequency at which the tube vibrates changes which is also measured by the sensors. Temperature is measured by an internal RTD in order to calculate thermal effects on the tube vibrating frequency.
Internaloperation(U-Tube design)
Phase shift
Densityfrequency
RCT1000 Coriolis mass flow meters operate at low frequencies which reduce the formation of air slugs in liquids with entrained air. This operation keeps liquids more homogeneous and provides less erratic readings.
NO FLOW FLOW
HIGH DENSITY LOW DENSITY
Inlet Outlet
U-Tubes
Sensingcoils
Drivecoil
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• Quick configuration
• Easy-to-read
• LCD screen
• Remote or integral mounting
Controls & system integration
RCT1000 transmitters provide a variety of ways to integrate the meter output into new and existing operations. The batch and PID functionality enables direct control of devices, such as valves, by use of digital or analog outputs. Digital outputs can also be programmed to indicate low and high alarm conditions.
Slurries are used in many products, but the proper mix needs to be controlled. As a slurry is pumped through the Badger Meter Coriolis flow meter, the meter measures the percentage of concentrate. Based on this measurement, the PID controller output from the RCT1000 transmitter will modulate the water addition to the mixer to ensure the exact
PID loop control example
% S
olid
(den
sity)
PID
cont
rol
RCT1000transmitter
RCS seriessensor
Wat
er li
neCoarse powder
Slurry controlled to % solids
Feed
4-20 mA (current #2) Mass �ow outputto control room
4-20 mA (current #1)
Mixer
Research Control®valve
Network options • EtherNet/IP• ModBus® TCP/IP• ModBus® RTU• HART®
Signal outputs• Frequency• Pulse• PWM• 4–20 mA (qty 3)
concentration is achieved. In conjunction to the PID control function, the RCT1000 transmitter can also supply analog output or network connectivity for continuous monitoring of the percentage of solids as well as flow rate information to the control room. Trend graphing
Data logging
Remote display
RCT user software
HealthTrack system verification
• Data logging
• Trending
• HealthTrack system verification
Every RCT1000 Coriolis mass flow meter comes with RCT user software. The software is specifically designed to provide users maximum operational flexibility and ease-of-use. By allowing users quick access to configure measurement parameters through the RCT user software or the LCD interface on the transmitter, the meter can be set up and measuring flow in a matter of minutes.
RCT user software offers much more than configuration features. Users are able to obtain advanced data logging and performance trending analysis, as well as system verification provided by the unique HealthTrack feature.
Badger Meter Europa
®
For Slovakia and the Czech RepublicBadger Meter Slovakia s. r. o.Racianska 109 / B83102 BratislavaSlovakiaTel. +421-2-44 63 83 01Fax +421-2-44 63 83 [email protected]
For Poland, Ukraine, Belarus and the Baltic countriesBadger Meter EuropeEastern Europe Branch Officeul. Korfantego 644-193 Knurów / PolandTel. +48-32 236 744 [email protected]
For the USA and CanadaBadger Meter, Inc.P.O. Box 245036Milwaukee, WI 53224-9536USATel. +1-414-355-04 00Fax +1-414-355-74 [email protected]
For MexicoBadger Meter de las Americas S. A. de C. V.Pedro Luis Ogazon #32Col. Guadalupe InnMexico, D. F. 01020MexicoTel. +52-55-56 62-08 82Fax +52-55-56 62-75 [email protected]
For AsiaBadger Meter Europa GmbHSingapore Branch80 Marine Parade Road#21–06 Parkway ParadeSingapore 449269SingaporeTel. +65-63 46 48 36Fax +65-63 46 48 [email protected]
For ChinaBadger Meter, Inc. Shanghai Representative Office 7-120299 Hangzhong RoadMinhang DistrictShanghai 201101ChinaTel +86-21-57 63-54 12Fax +86-21-57 63-54 [email protected]
Badger Meter Europa GmbHNürtinger Str. 7672639 NeuffenGermanyTel. +49-70 25-92 08-0Fax +49-70 25-92 [email protected]
For SwitzerlandBadger Meter Swiss AGMittelholzerstr. 83006 BernSwitzerlandTel. +41 31 932 01 11Fax +41 31 931 08 [email protected]
For the United Arab EmiratesBadger Meter EuropeMiddle East Branch OfficeDubai Silicon OasisHead Quarter BuildingWing C, Office #C209Dubai / UAETel. +971-4-371 2503Fax +971-4-371 [email protected]
Product line overview
Electromagnetic flow metersUltrasonic flow metersWeirs and flumesTurbine metersOscillating piston metersNutating disc metersImpeller metersVortex metersVariable area flow metersDifferential pressure flow metersVenturi tubesMass metersHeat metersHydraulic testersFlow calibratorsLubrication metersOil management systemsControl valvesConcrete finishing products
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