Battery Magnetic Flow Meter

RBEFB battery powered electromagnetic flow water meter is designed specifically for the water industry to meet the city's water supply to ensure the accurate calculation, the scene is widely used in places without power supply, such as urban water supply, sewage treatment, water conservancy and other industries.

Battery-powered electromagnetic flow meter specially designed sensor excitation system, and high-performance lithium battery-powered systems, and uses 16-bit AMD embedded processor power, with all-digital signal processing, measurement stability, high measurement accuracy, anti - Interference ability, and other features, automatic bi-directional flow measurement, on-site instantaneous flow of positive and negative cumulative total to show that self-diagnosis alarm FAULT Far GSM wireless data functions, the user through the powerful GSM / GPRS remote management software system can flow Far total wireless data storage functions.

The magnetic flow meter fulfils the special customer demands to water applications within abstraction, distribution network, revenue metering as well as irrigation.

 

 

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

RBEFB Battery powered Emag Flow Meter Features:

  • Micro power design, five section 3.6 V lithium batteries, continuous uninterrupted work five to ten years, and replace the battery is convenient.
  • The display USES a large screen LCD liquid crystal display; it can display instantaneous flow, velocity (line pressure), forward and reverse accumulated amount and alarm prompt flow parameters, etc.
  • Measuring tube is dynamic and resistance components won't produce winding, blocking phenomenon, almost no pressure loss, but long-term reliable work continuously. 
  • Wide measuring range: velocity measurement range can be up to 0.01 m/s ~ 12 m/s
  • Measuring stability: measuring accuracy from measured medium temperature, pressure, viscosity, density changes in the physical parameters.
  • Pulse, RS232 / RS485 interface and GSM/GPRS wireless data remote transmission function.
  • With data save function: can save 1000 groups of data flow, and data storage time interval can be arbitrary Settings and data query.


Specification

RBEFB Battery operated Emag Flow Meter Technical parameters

Diameter

DN10-DN1200  DN150- DN1200

(Also optional plug-in battery-powered electromagnetic flow meter) 

Pressure

0.6~4.0Mpa(Special pressure customizable)

Accuracy

±0.5%、±1.0%

Measuring range

0 ~±12m / s

Media Measurement (conductivity)

> 20μs/cm

medium temperature

-10 ℃ ~ 90 ℃, ≤180℃(Remote type)

ambient temperature

-40 ℃ ~ 65 ℃

power supply

3.6V/DC built-in lithium battery-powered, continuous working hours, more than 6 years

Electrode materials

316L stainless steel, HC, HB, titanium, tantalum, platinum / iridium alloy

lining materials

poly chloroprene rubber, polyurethane rubber, PTFE, F46, PFA

Connections

flange type, plug-in, clip pattern

Structure in the form of

a body divided body

Level of protection

IP68 and IP65(Remote type)

Display

LCD large-screen liquid crystal display instantaneous flow of positive / reverse the cumulative total and prompt warning

Output

Local display(optional pressure display):

1.    GPRS, RS485 can be powered by battery

2.    4-20mA, Pulse and 4-20mA+Hart is powered by 12-30VDC

Means of communication

GPRS(compact and remote type), GSM, Mobus, Hart

Appearance and size of the installationTable

Diameter 

Pressure

Dimension(mm)

Weights

Remark

mm 

MPa

a

b

C

d

kgs

 

25

4.0

200

146

121

115

5.5

32

200

161

139

140

6.5

40

200

161

139

150

6.5

50

200

199

160

165

7.5

65

200

209

173

185

12

80

200

216

173

200

12

100

1.6

250

267

233

220

14

125

250

278

233

250

19

150

300

308

257

285

22

200

1.0/1.6

350

366

291

340

45

250

400

418

331

395

65

300

500

481

381

445

95

350

500

529

428

505

135

400

600

587

483

565

170

450

600

620

533

615

210

500

600

675

585

670

230

600

600

790

685

780

255

700

700

900

800

895

315

800

800

1015

905

1015

335

900

900

1115

1002

1115

435

1000

1000

1230

1110

1230

595

1200

1200

1420

1295

1405

720

 

Battery Working Time

Table 4.1.Corresponding Table of Battery life and Interval Measurement Time

(Excitation Mode 1)

Cycle Measuring Time

50mA Excitation Use Time

20mA Excitation Use Time

30S

120 months

200 months

15S

60 months

100 months

14S

    56 months

93 months

13S

52 months

86 months

12S

48 months

79 months

11S

44 months

73 months

10S

40 months

66 months

9S

36 months

59 months

8S

32 months

53 months

7S

28 months

46 months

6S

24 months

39 months

5S

20 months

33 months

4S

16 months

26 months

3S

12 months

19 months

 Table 2 Battery Life Coefficient Corresponding Excitation Mode

Excitation Mode

Mode 1

Mode 2

Mode 3

Mode 4

Battery Life Coefficient

1.0

0.85

0.75

0.60

 

When the sensor has large diameter, the corresponding excitation cycle is long (see excitation mode parameter), therefore there is more power consumption.

Model Selection

RBEFB Battery operated Emag Flow Meter Model selection

RBEFB-

DN

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

 

1

 

2

 

3

 

4

 

5

 

6

 

7

 

8

 

9

 

10

 

11

 

12

 

13

 

14


 

1 Nominal Diameter(mm)/ [inches] (1)

0003[1/8”]

0050 [2”]

0300 [12”]

 

0006 [1/4”]

0065 [2½]

0350 [14”]

0010 [2/5”]

0080 [3”]

0400 [16”]

0015 [½”]

0100 [4”]

0450 [18”]

0020 [¾”]

0125 [5”]

0500 [20”]

0025 [1”]

0150 [6”]

0600 [24”]

0032 [1¼]

0200 [8”]

0700 [28”]

0040 [1½]

0250 [10”]

0800 [32”]

 

 

 

 

 

 

2 Flange Rating (1)

02

0.25 MPa

1600 … 800

06

0.6 MPa 

700 … 800

10

1.0 MPa 

200 … 800

16

1.6 MPa 

15 … 600

20

ANSI Class 150

15 …800

40

4.0 MPa 

15 … 150

50

ANSI Class 300

15 … 800

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 … 800

1

Earth ring

15 … 250

 2

Ground electrode

50 … 800

3

Inlet protection ring

50 … 800

 

 

 

 

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 (Remote  Type Only)

2

IP68

 

 

 

8 Explosion Proofing

1

None

 

 

 

9 Configuration – sensor/transmitter 

1

Compact (15 … 1000)

2

Remote (with 10m cable)(2)

3

Wafer

 

 

 

10 Power Supply

B

Battery

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

RS485(Battery) +Pulse (External)

2

GPRS (Battery)

3

GSM(Battery)

 

 

 

 

 

13 Calibration Specification

1

3 point, 1% accuracy

2

3 point, 0. 5% accuracy

3

3 point, 0. 25% accuracy

 

 

 

14 Flow Tube Configuration

1

Flange Type

15 … 800

D

DIN

 

A

ANSI

 

O

Others(pls clarify)

 

2

Flange type with removable electrodes

15 … 800

3

Flange +Body material

 

C

Carbon Steel

 

S

304 Stainless Steel

 

 

 

 

 

(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

Battery operated Magmeter(Emag flow meter) Application

  • Raw water, potable water, irrigation water
  • Leakage Detection Solution
  • Water distribution network monitoring and remote locations
  • Pump performance monitoring;
  • Wastewater and raw water metering
  • Well chambers, Groundwater Monitoring and Management Solutions
  • Water revenue metering for accurate billing
  • Monitoring of distribution networks
  • Pipeline leakage detection
  • Measuring water consumption
  • Utilities, Waterworks, water system
  • Irrigation water metering
     
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