Electromagnetic Flow Meter

RBEF Electromagnetic Flow meter(Magmeter) is suitable to measure volumetric flow rate of the conductive liquid and slurry in the closed pipe, e.g. clean water, sewage, various solutions of acid, alkali, salt; slurry, slag, pulp

and other liquids such as food-beverage etc.

A various type Magnetic Flow meters can provide as follows:

Standard Electromagnetic flow meters are for most of water and wastewater applications.
Wafer Type Ceramic liner Magnetic Flow Meter for Highly resistant Magmeter liner and electrodes that are suitable for most extreme process media, pipe size is from DN25 to DN200.
Sanitary Tri -clamp Type Magnetic Flowmeters are designed for the food(milk filling) & beverage and pharmaceutical industries and is available with hygienic and flexible process connections, pipe size is from DN10 to DN150.
High frequency Emag flow meter for Slurry and High Percentage of Solids, etc.

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.

U_E ∞ 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 U_E is therefore directly proportional to the average flow velocity (v).

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

U_E = Induced voltage

B = Magnetic field strength

D = Electrode spacing

V = Fluid velocity

Q = Instantaneous volumetric flow rate

Features

RBEF Magmeter (EMF) Features:

A wide range of meter sizes, from DN10 - DN3000 (½” - 120”) to tackle any application
Compact and Remote type;
Standard 0.5% accuracy, 0.2% accuracy for optional
Measure clean liquids as well as mixtures of solids and liquids with conductivity as low as 5 μS/cm;
Totalizers for positive, negative, and net flow
No moving parts to wear and tear
Short straight-pipe run required, thus, suitable for any desired installation location
Plug and play. All parameters are pre-configured in factory
No pressure loss
Special function: IR Remote, Power off timer, Cumulative hours, Relay Output
Rich communication outputs: 4-20mA, Pulse, RS485/232, Optional Modbus, HART, Profibus and GPRS/GSM communication interface
Self-diagnosing capability to minimize operational downtime

Specification

RBEF Emag.meters Specifications

Remark

(1) Line size selection will be inches for ANSI Class 150/300 rating selection, DIN size for all other ratings

(2) Order longer cable length separately

(3) Ceramic liner and electrodes is with wafer type only

Model Selection

RBEF Magmeters Model Selection

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”]	0450 [18”]	1400 [56”]
0020 [¾”]	0125 [5”]	0500 [20”]	1600
0025 [1”]	0150 [6”]	0600 [24”]	1800
0032 [1¼]	0200 [8”]	0700 [28”]	2000
0040 [1½]	0250 [10”]	0800 [32”]	2200
0050 [2”]	0300 [12”]	0900 [36”]	2400
0065 [2½]	0350 [14”]	1000 [40”]	2600
0080 [3”]	0400 [16”]	1200 [48”]	3000

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
20	ANSI Class 150	15 …1400
40	4.0 MPa	15 … 150
50	ANSI Class 300	15 … 1400
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	Neoprene (Hard rubber)	≤ 3000
2	PTFE	≤ 1000
3	Polyurethane	≤ 300
4	PFA	≤ 250
5	Tefzel	≤ 250
6	PFA with Wire Net	80 … 250
7	Tefzel with Wire Net	80 … 250
8	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

1	Flange Type	15 … 3000
D	DIN
A	ANSI
O	Others(pls clarify)
2	Flange type with removable electrodes	15 … 3000
3	Flange +body material
C	Carbon Steel
S	304 Stainless Steel

15 Special Function

0	No	R	IR Remote
T	Power off timer	H	Cumulative hours
Q	Quantitative control	J	Relay Output

Remark:

(1) Line size selection will be inches for ANSI Class 150/300 rating selection, DIN size for all other ratings

(2) Order longer cable length separately

(3) Ceramic liner and electrodes is with wafer type only

Applicants

The RBEF Electromagnetic flow meter (Emag. meters) range is designed to measure the volumetric flow of conductive liquids and slurries within closed pipelines in industries such as water & wastewater, chemical, petroleum, metal production, power, pharmaceutical, food & beverage, pulp & paper, etc.

The RBEF Emag flow meter is the ideal instrument for :

Measuring and billing in civil, industrial and agricultural sector;
For flow measurement and control in residual water treatment.
Water flow, sludge monitoring
Chemicals, acids, alkalis fluids; Paint industry
Viscous fluids and slurries
Water & wastewater flows
Irrigation meters of Agriculture
Leakage Detection
Pulp and slurries
Food and Beverage and pharmaceutical industries

Note: The minimum conductivity of the measured flow must be ≥ 5μS/cm for the meter to function correctly.

RBEF Electromagnetic Flowmeter Application Worksheet

RBEF	Flow meter Application Worksheet (Electromagnetic flow meter)
Customer Name
Contact
Tel/Fax/Email
Project Name
Tag.No
	Process Parameters
Pipe Spec / Material
Process Connection
Fluid Type
Max Flow
Nor. Flow
Min. Flow
Fluid Temperature
Operating Pressure
Measuring range
Power Supply	85 --- 265 VAC or 16 --- 36 VDC
Accuracy % required	( ±0.5 or ±0.2 )
	Manufacturers Configuration Sheet
Nominal Diameter mm
Nominal pressure MPa
Electrode Material
Lining Material
Grounding/ Protection
Temperature Rating
IP Protection Class
EX Certification
Configuration	Compact or Remote
Power Supply	85 --- 265 VAC or 16 --- 36 VDC
Programming Display
Input/output signal
Inspection
Connection type
Electric connection
Special signal cable
Mating Flange Set
Accessory 1
Accessory 2
Model Number	RBEF-
Remark

Download

Catalog - Electromagnetic flow meter

Manual - Magnetic flow meter

Other files

Electromagnetic Flow Meter

Description

RBEF Magmeter (EMF) Features:

RBEF Emag.meters Specifications

RBEF Electromagnetic Flowmeter Application Worksheet

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