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Electro Magnetic

FLOWMETERElectro Magnetic

FLOWMETER

Flanged Combined TypeCN-100

Battery TypeCN-400

CNT-2

CNW-1 / CNW-2

Flanged Separate Type

Wafer Type

Contents

09 ~ 17

19 ~ 22

23 ~ 29

31 ~ 44

Appendix

45 ~ 47Easy Manual for Converter

Flange Dimension 49 ~ 53

ELECTRO-MAGNETIC FLOW METER

Principle of Operation 04

Grounding Method 05~07

Piping Installation 08

1-1. Principle of Operation

04

ELECTRO - MAGNETIC FLOW METER

The electromagnetic flowmeters are the ideal flowmeters for metering the flow of all liquids, slurries and sludges that

have a specific minimum electrical conductivity. These flowmeters measure accurately, create no additional pressure

drop, contain no moving or protruding parts, are wear free and corrosion resistant. Installations are possible in any

existing piping system.

The electromagnetic flowmeter has proven itself over many decades and is the preferred flowmeter in the Chemical,

Pharmaceutical and Cosmetic industries, Municipal Water and Waste Water treatment facilities and in the Food and

Paper industries.

E = Electrode Voltage

B = Magnetic Induction

D = Electrode Distance

V = Average Flow Velocity

qv = Volume Flowrate

The voltage induced in the fluid is measured by two electrodes located diametrically opposite to each other. This electrode voltage Ea is proportional to the magnetic induction B, the electrode distance D and the average flow velocity v. Nothing that the magnetic induction B and the electrode distance D are constant values indicates that a proportionality exists between the electrode voltage Ea and the average flow velocity v. From the equation for calculating the volume flowrate Ea~qv, it follows that the signal voltage is linear and proportional to the volumetric flowrate.

Figure 1. Basic operating principle of an Electromagnetic Flowmeter

1. Principle of Electromagnetic Flowmeter

1-2. Measurement PrincipleFaraday’s Laws of induction form the basis form the basis for the electromagnetic flowmeter which states that a

voltage is generated in a conductor as it moves through a magnetic field.

This principle is applied to a conductive fluid which flows through the meter tube perpendicular to the direction of

the magnetic field. (see the figure 1.)

qv = π D²4

v

Ea ~ B· D · v

·

Ea ~ qv

Metering Tube

Electrode Voltage

Electrode

Ea

ED

B

v

x

y

z

Magnet Coil

2-1. General information on ground connections


2. Grounding

Observe the following items when grounding the device;

- The flowmeter grounding is one of the most important things for flowmeter installation.

- For plastic pipes or pipes with insulating lining, the grounding is provided by the grounding ring.

- When stray potentials are present, install a grounding ring upstream and downstream of the flowmeter sensor.

- For measurement-related reasons, the potential in the station ground and in the pipeline should be identical.

※ Important-Notice

If the flowmeter sensor is installed in plastic or earthenware pipelines, or in pipelines with an insulating lining, current may flow through the grounding electrode in special cases.

In the long term, it may destroy the sensor, since the ground electrode will turn in degrade electrochemically.In these special cases, the connection to the ground must be performed using grounding plates. Install a grounding ring upstream and downstream of the device in this case.

transient

2-2. Metal pipe with fixed flangesUse a copper wire (at least 2.5mm²) to establish the ground connection between the sensor, the pipeline flanges

and an appropriate grounding point.

Figure 2. : Metal pipe, without liner (over 50A sizes)

CN - 100

EarthGround

CNW-1

EarthGround

Flange Type Wafer Type

05


Figure 3. : Metal pipe, without liner (from 10A to 40A sizes)

CN - 100

EarthGround

EarthGround

CNW-1

2-3. Plastic pipes, non-metallic pipes or pipes with insulating linerFor plastic pipes or pipes with insulating lining, the ground for the measuring agent is provided by the grounding ring.

If grounding electrodes are used, the grounding ring is not necessary.

a) Install the flowmeter sensor with grounding ring in the pipeline.

b) Connect the terminal lug for the grounding ring and grounding connection on the flowmeter sensor with the grounding strap.

c) Use a copper wire (min. 2.5mm²) to link the ground connection to a suitable grounding point.

※ It is essential to use this grounding method in an electrolysis process at a plating factory.

Figure 4. : Plastic pipes, non-metallic pipes or pipes with insulating liner

CN - 100

Grounding Rings

Grounding Rings

EarthGround

CNW-1

EarthGround

Grounding Rings

Grounding Rings



06

2-3. Ground for pipes with flexible connectionFor pipes with flexible connection, it should be welded M16 or 1/4 sized bolts on both sides of the pipes as shown

the figure 5 to get proper ground results.

Make sure to use a copper wire (min. 2.5mm²) to link the ground connection to a suitable grounding point.


Figure 5. : Ground for pipes with flexible connection

CN - 100

CNW-1

EarthGround

flexible connectionM16 or 14 bolt weldedon pipe for grounding

flexible connection

M16 or 14 bolt weldedon pipe for grounding

EarthGround

Flange Type

Wafer Type

07


3-2. Required Pipe Length on Piping ConnectionsIf various joints are used upstream of the detector outlet, the straight pipe length as show in figure below is required.

The figure above required straight pipe length on the upstream side

It follows the regulations of JIS B 7554 and KS B 0612 standards for the straight-pipe length installation conditions of

electromagnetic flowmeter.

3. Piping Installation

3-1. Upstream Downstream Piping Installation Methods (Standard)To ensure specific accuracy over widely varying process conditions, install the flowtube with a minimum of five straight upstream and two pipe diameters downstream from the electrode plane, as shown below. This flowtube placement is usually adequate to allow for disturbances created by elbows, valves and reducers.

Upstream and Downstream Straight Pipe Diameter

※ NOTE : It can be measured a correct flowrate only when a detector is full with fluid inside completely.

Make sure to operate it with fluid in full inside.

ValveValve

CN-100

2 Pipe Diameters5 Pipe Diameters

Flow

CN-100

CN-100

CN-100

CN-100

CN-100

L

By Pass Line

"T" Bow Line

90℃ Band Line

Horizental Straight Line

Reduction & Extension Line

L

L

L

L = 5D

L = 5D

L = 10D

L = 5D : Fully opened sluice valveL = 10D : Other valves (not fully opened)

※ Note

L : Required straight pipe length-straight pipe length plus half length of the detector.

D : Normal bore size (diameter)

L

L = 5D

08

Flanged Combined Type

CN-100

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1. SummaryThe Electromagnetic Flowmeter can be used to accurately measure the flowrate of liquids, paper pulp, slurry and

mineral slurry which has an electrical conductivity greater than 20㎲/cm, CN-100 is a flow measurement system in

a compact design which integrates the primary and signal converter.

MODEL

TYPE

CN-100

COMBINED TYPE

Normal Type EX-Proof Type

Combined Type (CN-100)

Converter

Body

Power Supply

I / O

Assembly Way

Option

10


CN-100

2. Specifications

MODEL

Type

Size

Process connection

Measuring range

Accuracy

Fluid temperature

Conductivity

Power consumption

Display

Output

Protection class

Special feature

CN-100

Combined Type

10mm (3/8") ~ 1,000mm (39")

Flange type-standard KS/JIS10K RF(Option: ANSI, DIN)

0.2m/s-10m/s

±0.5% F.S. (15A~800A)±1.0% F.S.(900A ~ : It needs for site calibration)

Teflon (-10℃~160℃)Hard rubber (0℃~60℃)

-10℃~60℃

≥10㎲/cm (Option: 5~10≥ ㎲/cm)

AC 85-250V (50~60Hz)DC 24V, Surge Arrester

Max 15VA

LCD DisplayFlowrate: 5-digit DisplayTotal: 9-digit DisplayWith Back light

Analog: 4-20mA (isolated)Pulse: Open Collector Digital: RS485

IP66

Ex-proof: KC, IECEx (Option) - ExdⅡC T5 (IP66)

① Self check② Empty pipe③ Enable to reverse flow direction④ Data logging⑤ Error message

Ambient temperature

Power supply

3. Standard Material

DescriptionNo.Material

10A ~ 1,000A

①

②

③

④

⑤

Head

Body

Flange

Liner

Electrode

Cast Aluminum

SUS304

SUS304 / Carbon Steel

Teflon (PTFE) / Hard Rubber

Hastelloy-C

Option : Platinum Titanium Tantalum

①

②

③

④

⑤

FC KOREA Co., LTD. Address: #173-409, Gajwa-Dong, Seo-Gu, Incheon, Korea 404-811Tel : +82-32-876-7339 / Fax : +82-32-876-7377 http://www.fckoreains.com

11

4. Measuring RangeIn the normal industry application, it is better to set the measured medium speed as 2~4m/s, under the special

situation, the minimum speed should be more than 0.2m/s and maximum speed less than 8m/s, if there are solid

granules in liquid, the usual speed should be less than 3m/s for purpose to avoid the over-attrition between lining

and electrical poles. For viscid liquid, the speed can choose as 2m/s, the fast flow speed makes for the automatic

elimination of obstructive substances glued on poles, therefore improve the inspection’

Size

0.080.190.340.530.871.362.123.585.438.4813.2519.0833.9152.9976.30103.86135.65171.68211.95305.21415.42542.59686.72847.801220.831661.692170.372746.873391.20

2.826.3511.2917.6428.9145.7170.58119.28180.68282.32441.12636.211129.271764.482540.863458.394517.085716.937057.9410163.4313833.5518068.3122867.7128231.7440653.7155334.2172273.2591470.84112926.96

10A15A20A25A32A40A50A65A80A100A125A150A200A250A300A350A400A450A500A600A700A800A900A1000A1200A1400A1600A1800A2000A

0.2 10.0

Flow range

Minimum Maximum

Velocity(m/s)

Velocity(m/s)

Flow rate3(m /h)

Flow rate3(m /h)

Graph Illustration of Diameter, Flow Speed and Volume of Flowmeter

s preciseness.

(mm)

Flow volume ( )3m /h

Flo

w v

eloci

ty (

)m

/s

0.1

0.3

1.0

10

-210 -110 1 110 210 310 410

15 25 50 80 150200

250

300

6540

10032

mm450

400

350

12


[ KS / JIS10K ]

L (mm)

5. CN-100 External Dimension For Integration

WorkingPressure

(Bar)D (mm) K (mm) n–ØA

Integration

Weight(Kg)

40

16

10

6

200

200

200

200

200

200

200

200

200

250

250

300

350

400

500

500

600

600

600

600

700

800

900

1000

90

95

100

125

135

140

155

175

185

210

250

280

330

400

445

490

560

620

675

745

905

1020

1120

1235

65

70

75

90

100

105

120

140

150

175

210

240

290

355

400

445

510

565

620

730

840

950

1050

1160

6

7

7

8

8

9

10

11

13

17

20

30

41

58

70

82

106

116

130

185

230

300

380

480

4-Ø15

4-Ø15

4-Ø15

4-Ø19

4-Ø19

4-Ø19

4-Ø19

8-Ø19

8-Ø19

8-Ø19

8-Ø23

8-Ø23

12-Ø23

12-Ø25

12-Ø25

16-Ø25

16-Ø27

20-Ø27

20-Ø27

24-Ø33

24-Ø33

24-Ø33

28-Ø33

20-Ø39

Integration installation type

10

15

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

700

800

900

1000


Size (mm)

13


H (mm)

300

300

310

310

320

330

350

360

380

400

440

460

510

570

630

680

730

780

850

950

1080

1170

1210

1320

K

D

n-ØA

CN-100

L

H

※ H(mm) : Allowance ±10mm

6. Ordering Code

CN-100

123456789101112131415161718192021222324252627

COMBINED TYPE

MODEL SPECIFICATION DESCRIPTION

ABCDEFGH

CONNECTION FLANGE STANDARD

ABCDEF

ELECTRODE MATERIAL

ABCDEFN

GROUND RING MATERIAL

LINER MATERIAL

ABC

10A (3/8")15A (1/2")20A (3/4")25A (1")32A (1-1/4")40A (1-1/2")50A (2")65A (2-1/2")80A (3")100A (4")125A (5")150A 200A 250A 300A 350A 400A 450A 500A 550A 600A 650A700A750A800A900A1000A

(6")(8")(10")(12")(14")(16")(18")(20")(22")(24")

JIS 10KJIS 16KJIS 20KANSI 150#ANSI 300#

DIN PN16Other

DIN PN10

316LSSTi (titanium)Pt-Ir (platinum iridium)Ta (tantalum)Hastelloy COther

316SS316LSSTi (titanium)Ta (tantalum)

Hastelloy CNone

Pt-Ir (platinum iridium)

PTFEHARD RUBBEROther

METER SIZE

[Example]

CN 100 7 A E A AModel

14


7. Dimension Size

110

130

140

200

110

7-1. Normal Combined Type

7-2. Ex-Proof Combined Type


CN-100

110

150

CN-100

237

140

110

15


Electric Connection: M20x1.5(Female)

Electric Connection: PF (Female)2"

8. Wiring

COMM

COMM

POUT

ALM1

ALM2

IOUT

TRX+

TRX-

IVIN

LN-

LN+

Description for PCB connection functions

Frequency Pulse and

Current and Alarm Com

Frequency (Pulse) Output for Bi-directional Flow

Alarm Output for Upper Limit

Alarm Output for Low Limit

Current Output of Flux (Two Routes Out) Isolated

+ Communication Signal Input

- Communication Signal Input

External DC Power 24V

Power Supply

Power Supply

Grounding

COMM

POUT

A LM1

COMM

A L M 2

I O U T

T R X -

TRX+

I V I N

1) Power : AC 85V ~ AC250V (50~60Hz)

2) Grounding

Functionpart

Powerpart

Fuse

8-1. Wiring Connection on Converter

※ Note: Wires’colors are not required.

16

It needs to be inquired question separately for vessel using purpose.


8-2. Controller Wiring Diagram

8-3. Controller Wiring Connection Function

1) Power : AC 85V ~ AC250V (50~60Hz)

2) Analog Output : DC 4~20mA (Isolated)

3) Pulse Output : Open Collector Pulses

4) Alarm Output : HI & LOW Alarm Output

5) Network Function : RS-485

6) Grounding

7) Surge Arrester

Counter

Hi-Alarm

Low-Alarm

Indicator

PLC

Indicator

Alarm Output Connection

Frequency Pulse Output Connection

Analog Output ConnectionDC 4~20mA (Isolated)

Communication ConnectionRS-485

DC24V(Pulse+)

Pulse IN-

COMM

POUT

A LM1

COMM

I O U T

T R X -

TRX+

I V I N

A L M 2


Analog Output ConnectionDC 4~20mA (2 Wires)

Power supplyDC 24V

17


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electro magnetic flowmeter - komachine€¦ · if the flowmeter sensor is installed in plastic or...

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