Coriolis Mass Flow meter & Density Meter

Coriolis Mass Flow Meter
  • Coriolis Mass Flow Meter

RBCM Coriolis Mass Flow meters based on Coriolis theory. The Mass flow meter is measurable of liquid, gas, liquid-solid and gas-solid two phase fluid mass flow instantaneous rate and cumulative total and realizes display and remote transmitter of all measuring parameters. In addition, the intelligent transducer is able to display the fluid temperature, density and percentage of two-phase fluid. It also has total quantitative control function.

Our company has strong technical forces and is capable of designing, install, adjust and make comprehensive analysis to the problems in manufacturing process. We will offer the best measuring solution. High/low temperature, high pressure, high viscosity, micro flow, large temperature and pressure fluctuations, rapid response, and accuracy, all the problems mentioned above we can handle in the best way. Meanwhile, these flow meters can be used as density meters.

We are not only the expert of fluid measurement, but also the expert of automatic instrument. Hand your trouble to us and you will get the best harvest. We’ll provide the most effective solution to the enterprises that have the measure requirement by using optimum allocation, perfect function, simple operation, thoughtful service and strong support. Believe we will rapidly become domestic first-class and international standard new flagship in the flow measurement industry.

Description

  • Principle
  • Features
  • Specification
  • Model Selection
  • Applicants
  • Download
Principle

Coriolis Measuring Principle

RBCM Coriolis flow meters are instruments that, using the Coriolis principle, measure directly the mass flow rate of a process. The Coriolis force is the phenomenon that causes objects to appear to curve as they move across the surface of the earth.

A Coriolis meter artificially introduces a positive and negative Coriolis acceleration to the process. As illustrated in the diagram below, the entire process is split and re-directed through two curved tubes. The tubes are vibrated at a multiple of their natural resonant frequency. Miniature velocity transducers comprising of a coil & a magnet are each mounted on one of the tubes as shown. When no flow is present the tubes vibrate and the sine wave output of each velocity transducer is in phase. When flow is initiated the tubes will begin to twist due to the Coriolis acceleration induced by the moving mass. This causes the sine waves to shift in relation to one another (either lead or lag depending on the flows' direction) and a measurement is made. An added benefit of Coriolis meters is their ability to perform multiple measurements. In addition to measuring mass flow directly, Coriolis mass flow meters also measure the density of the process by monitoring the period of the tube vibration and characterizing that as a density. Advanced digital signal processing enables Coriolis meter transmitters to calculate the concentrations of two component mixture and net volumes, etc. Variations on the split-tube design now include straight-through tubes and double- looped single tubes.

Features

RBCM Coriolis flow meter Features:   

  • Pipe size range: DN1 to DN150
  • Accuracy: ±[0.2% +(zero stability/flow rate×100%)]
  • Measurement medium: liquid, gas, solid, or two phases and three phases   mixed fluid
  •  No moving parts, high reliability and durability;
  • Measurement of mass flow, density, temperature and volume flow;
  • Free of dead spots;
  • Output: RS485/MODBUS or HART
  • Batch Control for optional
  • High temperatures up to +300℃;Low temperatures down to -200℃
  • Ex protected as per Explosion-proof grade: Ex(ib)II BT2-T5 and ExdibIICT6 Gb；
  • Work pressure:(0~32) MPa Main technical parameters 
Specification

RBCM Coriolis flow meters Specifications

Technical Specifications

Table of Technical Specifications (Table 1)

Titles

Technical Specifications

Mass flow accuracy

±[0.2% +(zero stability /flow rate×100%)]

Mass flow repeatability

±(1/2) ×[0.2% +（zero stability /flow rate×100%)]

Density range

0.2 g/cm3～3.5g/cm3

Density accuracy

±0.002g/cm3

Temperature range

-60℃~+200℃ (-60℃~+300℃,-200℃~+100℃

 for optional)

Temperature accuracy

±1℃

Output of current loop

4mA~20mA

Output of frequency/pulse

0Hz~10kHz

Communication

RS485/MODBUS or HART

Contactor capacity and form of the relay

24V/0.1A, normal open

2 Other Specifications

Environmental Specifications (Table 2)

Titles

Specifications

Temperature range of fluid

-40℃～+200℃ (-40℃～+300℃,-200℃～+100℃ for optional)

Environmental temperature range

0℃～+40℃(-40℃～+40℃)

Environmental humidity

≤90% RH, non condensation

Atmospheric pressure range

86kPa～106kPa

Power supply of transmitters

DC (24±10%) V

Power consumed

＜15W

Essential safety Ex code

ExibIIBT4Gb

Composite Ex code

ExdibIICT6Gb

 

Specifications (Table 3)

Specs

Line Sizes (mm)

Flow Range (t/h)

Calibration Range (t/h)

Max. Tube Pressure (MPa)

Zero Stability (t/h)

Velocity  Parameter

(h m/t s)

DN1

1

0～0.02

0.002～0.02

4.0

0.000005

353.7

DN2

2

0～0.06

0.006～0.06

4.0

0.00002

88.4

DN3

3

0～0.35

0.035～0.35

4.0

0.00008

39.3

DN6

6

0～0.7

0.07～0.7

4.0

0.00016

19.65

DN10

10

0～1.2

0.12～1.2

4.0

0.0002

4.912

DN15

15

0～6.4

0.64～6.4

4.0

0.0011

2.183

DN25

25

0～16

1.6～16

4.0

0.002

0.902

DN40

40

0～40

4～40

4.0

0.003

0.334

DN50

50

0～65

6.5～65

4.0

0.006

0.197

DN80

80

0～160

16～160

2.5

0.01

0.0873

DN100

100

0～250

25～250

2.5

0.015

0.0544

DN150

150

0～550

55～550

2.5

0.03

0.0239
Model Selection

RBCM Coriolis flow meter Model selection:

Model 

Diameter

Flow Range(t/h)

Model 

Diameter

Flow Range(t/h)

RBCM-DN1

DN1

0 ~ 0.04

RBCM-DN 40

DN40

0 ~ 40

RBCM-DN3

DN3

0 ~ 0.35

RBCM-DN50

DN50

0 ~ 65

RBCM-DN6

DN6

0 ~ 0.7

RBCM-DN65

DN65

0 ~ 80

RBCM-DN10

DN10

0 ~ 1.2

RBCM-DN80

DN80

0 ~ 160

RBCM-DN15

DN15

0 ~ 6.4

RBCM-DN100

DN100

0 ~ 280

RBCM-DN25

DN25

0 ~ 16

RBCM-DN150

DN150

0 ~ 550

T

Construction Type

C

Compact

R

Remote

 

Pressure Range

25

2.5MPa (DN80~DN150)

40

4.0MPa (DN15~DN65)

30

4.0MPa or 30MPa（DN1~DN10）

S

Special

 

Temperature

T1

(-60~200℃)

T2

(-60~300℃) high temperature type

T3

(-200~100℃）low temperature

 

Output

A

4-20mA、0-10KHz\RS485+MODBUS

H

Hart

 

 

Ex-proof

BT4

ExibIIBT4 Gb

CT6

ExdibIICT6 Gb

 

Accuracy

A2

0.2%

A1

0.1~0.15%

 

Batch Control

N

No

W

with

 

Power

D

24VDC

A

220VAC

 

Flange Type

D

DIN

A

ANSI

S

Special

 

Order Notice: 

  1. Standard measuring tube: SS316L, other wetted parts: SS304, if you need special demand, pls inquire.
  2. If you need the pipe size is more than DN150, pls inquire.
Applicants

RBCM Coriolis flow meters Application

Measurement of mass flow rate, mass total, volume flow rate and volume total, density and temperature of liquids, slurry and multiphase liquids are measured.;

  • Mass flow and water content in oil fields and petrochemical plants
  • Automatic loading control
  • Desulphurization industry
  • Chemical process
  • The reactor feed quantitative
  • Food and beverage industries for filling machine
  • Pharmaceutical industry
  • Paper mills (pulp)
  • Measurement of fuels such as LPG, LNG, etc.
  • Micro filling Machine
  • Intelligent Density Meter
  • Building materials industry
Download

  Catalog - Coriois Mass Flow Meter

 Manual - Coriolis Flow Meter

  Other files - Mass flowmeter

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