Ceramic Liner Electromagnetic Flow Meter

The RBEF Ceramic magnetic flow meters have ceramic liners in place of the typical elastomer liners commonly used in magnetic flow meters. Ceramic liners can tolerate higher temperatures and pressures than most other liner materials. Other liners can also release plasticisers and drying agents into the product in a process referred to as leaching.

The ceramic measuring tubes feature an outstanding combination of material properties including surface hardness and quality, mechanical stability and resistance to corrosion and temperature change. Benefits for the operator include ultimate accuracy and long-term stability as well as vacuum resistance and diffusion resistance. The versatile profile combined with the high accuracy, these flow meters are used in all sectors of industry.


 

Description

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

Faraday’s law of electromagnetic induction states that an inductive voltage is generated when a conductor moves through a magnetic field. This principle is used as the basis of flow measurement in the RBEF electromagnetic flow meter.  In the electromagnetic flow meter, the flowing fluid corresponds to the moving conductor as described in Faraday’s law.

 UE ∞ B * D * v

The induced voltage UE is directly proportional to magnetic field intensity (B), electrode spacing (D) and average fluid velocity (v). Since magnetic field intensity (B) and the electrode spacing (D) are constant values, induced voltage UE is therefore directly proportional to the average flow velocity (v).

Q = (∏ * D2) / 4 * v     therefore    UE ∞ Q

The equation for calculating volumetric flow rate (Q) shows that the induced voltage (UE) is linear and directly proportional to the average velocity (v).  In the  flowmeter transmitter, the induced voltage (UE) from the electrodes is used to calculate volumetric flow rate (Q) based upon the pipe’s internal diameter.

UE = Induced voltage

B = Magnetic field strength

D = Electrode spacing

V = Fluid velocity

 

Q = Instantaneous volumetric flow rate


Features

RBEF Ceramic Electromagnetic Flow meter Features

  • Tube with high-tech ceramic material, fulfilling fully vacuum-resistant.
  • Special tube design with conical parts, optimizing the flow profile.
  • The smooth and pore free ceramic tube construction does not leak.
  • Insensitive for temperature shocks, exceptional long-term stability and accuracy.
  • Highly aggressive and abrasive fluids for slurry applications.
  • Stable measurement in noisy applications.
  • Improved safety with absolute leak tight design making it highly suitable for hygienic applications.
  • Excellent chemical and abrasion resistance, fulfilling requirements of the chemical industry.
  • Diameter range of DN15 up to DN200, DN15...100: PN 40, DN150...200: PN16 or PN 100.
Specification

RBEF Ceramic Electromagnetic Flow meter Specification:

  • No moving parts;

  • Fluid: for liquids

  • Mounting: Tri-clamp or Wafer

  • Material: Ceramic liner and Electrode,

  • Other characteristics: compact and remote type

  • Protection level: IP65 or IP67

  • Domain: Highly aggressive and abrasive fluids,

  • Process pressure: 9.8 bar (142.14 psi)

  • Process temperature: Min.: -40 °C (-40 °F); Max.: 180 °C (356 °F)

  • Flow velocity: Min.: 0.25 m/s (0.82 ft/s) Max.: 12 m/s (39.37 ft/s)



Model Selection

RBEF Ceramic Electromagnetic Flow meter Model Selection:

 

Tri-clamp Sanitary Electromagnetic Flow Meter Ordering Code


RBEF-

DN

-

-

-

-

-

-

-

-

-

-

-

-

-

 

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15


1 Nominal Diameter(mm)/ [inches](1)

0015 [½”]

0100 [4”]

   

0020 [¾”]

0125 [5”]

   

0025 [1”]

0150 [6”]

   

0032 [1¼]

0200 [8”]

   

0040 [1½]

     

0050 [2”]

     

0065 [2½]

     

0080 [3”]

     

2 Flange Rating(1)

02

0.25 MPa

1600 … 3000

06

0.6 MPa 

700 … 3000

10

1.0 MPa 

200 … 1400

16

1.6 MPa 

15 … 600

40

4.0 MPa 

15 … 150

AA

Special

 

 

3 Electrode Material

1

316L Stainless Steel

3

Hastelloy C-22

4

Hastelloy B-10

5

Titanium

6

Tantalum

7

Platinum / Iridium Alloy

8

Tungsten Coated Stainless Steel

9

ceramic

4 Lining Material

1

Ceramic

 
15 … 200
     
     

 

5 Grounding and Lining Protection 

0

Flange ground

15 … 3000

1

Earth ring

15 … 250

 2

Ground electrode

50 … 3000

3

Inlet protection ring

50 … 3000

6 Max. Process Temperature 

A

80°C

All Linings

B

120°C

Neoprene / PTFE / PFA / Tefzel

C

180°C

PTFE only

7 Environmental Protection Class

1

IP65

2

IP67 (Compact Type Only)

3

IP68 (Remote Type Only)

8 Explosion Proofing

1

None

2

Ex DE IIC T6

9 Configuration – sensor/transmitter 

1

Compact (15 … 1000)

2

Remote (with 10m cable)(2)

10 Power Supply

A

AC: 85 … 265 VAC / 45 … 63Hz

D

DC: 18 … 36 VDC

11 Display and Programming

2

2 line LCD display + keypad programming

3

3 line LCD display + keypad programming

12 Output and Input

0

Basic Configuration (current, pulse and contact outputs)

2

Basic Configuration + RS485

3

Basic Configuration + GPRS

4

Basic Configuration + MODBUS

13 Calibration Specification

1

3 point, 0.5% accuracy

2

3 point, 0.25% accuracy

3

Special

14 Flow Tube Configuration

W Wafer 15 to 200
   

 

 

15 Special Function

 

0

No

R

IR Remote

T

Power off timer

H

Cumulative hours

Q

Quantitative control

J

Relay Output

 

 


Applicants

RBEF Ceramic Electromagnetic Flow meter Applications

  • Master transfer meter;
  •  Precise volumetric dosing of additivesChemical injection
  •  For acids, alkaline, paste, slurries and many other aggressive media even with high solid contents.

      In different industries:

  •  Food & beverage
  •  Pharmaceuticals,  Biotechnology industries
  • Chemical Processing Industry;
  •  Paper & Pulp;
  •  (Waste) water;
  •  Minerals & Mining;
  •  Machinery
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