High Pressure Magmeters

High pressure Magnetic Flow Meter
  • High pressure Magnetic Flow Meter

High Pressure Magmeters  (Electromagnetic Flowmeter) is designed to measure the flow rates of conductive liquids in applications with high operating pressures.

It can be used in applications with pressures in excess of 6000 psig (42 Mpa), Line sizes ranging from 1" to 8" (25 mm to 200 mm) can be accommodated by the high pressured mag meter, with available process connections including ANSI, DIN, and JIS-type flanges.

A wide selection of options are also available for the display/converter module including Compact or remote type, 85-265 VAC or 16-36 VDC power, and HART, RS485 and Profibus communications.

 



Description

  • Principle
  • Features
  • Specification
  • Model Selection
  • Applicants
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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

High Pressure Magmeter (Emag.flow meter) Features:

  • High accuracy - ±0.5% of reading (standard) or ±0.2% of range
  • Suitable for high pressure operation in excess of 6000 psig
  • Available FEP liner suitable for vacuum conditions
  • Capable of measuring fluid velocities of up to 40 feet/second (12 m/s), with a high turndown ratio
  • Various liner/electrode material combinations can be selected in order to make this high pressure mag meter chemically compatibility with different fluids
  • Flange-type process connections are standard; ANSI, DIN, JIS styles available
  • IP68 protection class for submersible operation
  • Diagnostic features alert the user to empty pipe or reverse flow conditions
Specification

High Pressure Magnetic Flow Meter(Magmeters) Specification:

Specification

Data

Specification

Data

Flow range

0-12m/s

Medium

Conducting medium(Solid content ≤5%)

Measuring repeatability

± 0.1%

Electrical Conductivity

＞5us/cm(water ＞20us/cm)

Accuracy

±0.5%

Power

220VAC/50Hz

Pressure

26MPa

24VDC

32MPa(special order)

Output

4-20mA

Operation temp.

0 to +80℃

Pulse

0-1kHz(Adjustable)

0 to + 45℃

Consumption

10VA

 

Dimensions

Pipe Size

Working Pressure(MPa)

a

b

c

d

Screw Size

50

26

325

234

165

215

M24*8

65

26

330

256

190

246

M27*8

80

26

430

276

203

265

M30*8

100

26

440

308

241

310

M33*8

125

26

505

356

292

375

M39*8

Remark: 1. a is meter'length; b is  Flange outside diameters; c is flange inside diameters; d is length of Magnetic Converter base to botton of pipe.

Model Selection

High Pressure Magnetic Flow Meter Model Selection

 

RBEF Electromagnetic Flow Meter Model Selection
RBEF  
    [1]      [2]  [3] [4]     [5] [6]   [7] [8] [9] [10]   [11]       [12] [13]    [14]
[1] Category     Grounding & Lining Protection
F Flanged C Ceramic Mini Mini
[6]		 0   Body-flange grounding  (DN15 - DN1200)
W Wafer-type S High-Frequency Ex Ex-proof 1   Ground ring [or lining protection flange] (DN15-DN250)
L Threaded B Battery-Powered I  Insertion 2 Grounding electrode   (DN25 - DN1200)
K Clamping Hp High-pressure H Energy 3   Import protection flange  (DN50 - DN300)
[2] Nominal Diameter(mm)   Ambient Temperature
003 065 400 [7] A   ≤80 ℃    (All lining)
006 080 450 B   ≤120 ℃  (Only Neoprene、PTFE、PFA)
010 100 500 C   ≤180 ℃  (Only PTFE)
015 125 600   Protection& Anti-hazard Requirement
020 150 700
[8]		 1   IP65
025 200 800 2   IP67  (Only compact)
032 250 900 3 IP68  (Only remote，tie cable should be specified)
040 300 102 4   IP65+Ex d ib mb IIC T4 Gb
050 350 122   Sensor And Converter Combination Structure
E.g. ：050 = DN50; 150 = DN150; 122 = DN1200 [9] C   Compact(Only DN15-DN1000)
[3] Nominal Pressure& Process Connection R   Remote(With 10m signal cable, the other length
  is set separately)
02    0.25 MPa (DN700-DN1200)
06    0.6 MPa  (DN700-DN1200)   Power Supply
10    1.0 MPa  (DN200-DN1200) [10] A Alternating current (85-265) VAC /(45-63)Hz
16    1.6 MPa  (DN15-DN600) D Direct current  (16-36) VDC
20    ANSI 150  (DN15-DN600) B   Battery  3.6 VDC
40    4.0 Mpa  (DN 3-DN150)   Output Signal & Input Signal
50    ANSI 300 (DN15-DN600) [11] 0   Basic configuration (Current output + pulse
  output + alarm output)
91    JIS 10K  (DN15-DN600)
92    JIS 20K  (DN15-DN600) 2   Basic configuration + RS232
93    Fixed-length model AMAG- I 4   Basic configuration + RS485
94    Pluggable Model AMAG- I-500 M   Basic configuration + MODBUS
95    Pluggable Model AMAG- I-900 H   Basic configuration + HART
99    Special pressure requirements(According to
   special order form)		 P   Basic configuration + Profibus-DP
  Additional Function
[4] Lining Material [12] O No requirement J Relay output
1    Soft Neoprene (≤ DN1200) T Power-off recording F Enhancements
2    Hard Neoprene (≤ DN1200) Q Quantitative control S High-Frequency
3    PTFE (≤ DN1000) R Infrared remote control G GPRS communication
4    Polyurethane (≤ DN300) H Hourly accumulation L Ultralow temperatureconverter
5    PFA (≤ DN250)   Factory Inspection (Accuracy Level & Flow Point Number)
6    F46  (≤ DN250) [13] 1 0.5 level、3 point check 3 0.5 level、5 point check
7    Ceramics   (≤ DN250) 2 0.2 level、3 point check T Other requirement
[5] Electrode Material   Supplementary
1    Stainless steel  [316L]
[14]		 0 No requirement
2    Hastelloy C  [Alloy-C22] 1 Stainless steel 304SS sensor(304SS flange)
3    Hastelloy B  [Alloy-B10] 2 Special requirements 1 (According to special order form)*
4    Titanium 3 Special requirements 2 (According to special order form) **
5    tantalum   Selection E.g.
6    Platinum/iridium Alloy  Flange type, DN150, 4 .0MPa, PTFE lining, Hastelloy alloy C electrode, body flange grounding, ambient temperature < 120℃, IP65 non-ex-proof,compact,AC power supply, basic configuration + RS485, no additional functional requirements, 0.5 level,3 point
 check, stainless steel sensor .Selection coding：RBEF-F15040320B1CA4011
7    Stainless steel coated tungsten carbide
8 Special conductive ceramics (Only for ceramic lining )
* E.g. ：[14]=2,Marked 316SS flange, 304SS sensor shell.
**

E.g. ：[14]=3, Marked 316SS flange, 304SS sensor shell.

 

 

 

Applicants

High Pressure Electromagnetic Flowmeter Typical applications:

  • Produced water,
  • Drilling mud,
  • Fracking fluid.
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