Azbil Magnew plus+ series User manual

MagneW PLUS+

Electromagnetic Flowmeter

Open Channel Flowmeter Detector

User’s Manual

Model: NNK140/941,NNK150/951

CM2-MGN200-2001

NOTICE

While the information in this manual is presented in good faith and

believed to be accurate, Azbil Corporation disclaims any implied war-

ranty of merchantability or tness for a particular purpose and makes

no express warranties except as may be stated in its written agreement

with and for its customer.

In no event shall Azbil Corporation be liable to anyone for any indirect,

special or consequential damages. is information and specications

in this document are subject to change without notice.

Table of Contents

1 :Introduction................................................................................................... 1

2 :External view ................................................................................................ 3

3 :Outline and standard specications ............................................................. 5

3-1 :Standard specications................................................................... 5

3-2 :External dimensions........................................................................ 6

3-3 :How to use model with an Elbow Flange ........................................ 14

3-4 :How to use the Dummy detector..................................................... 15

4 :Installation .................................................................................................... 17

4-1 :Considerations on installation ......................................................... 17

4-2 :Transportation of owmeter to the installation site.......................... 18

4-3 :Example of installation work ........................................................... 19

4-4 :Examples of installation .................................................................. 20

5 :Wiring ........................................................................................................... 22

5-1 :Considerations on wiring................................................................. 22

5-2 :Wiring.............................................................................................. 22

6 :Inspection ..................................................................................................... 24

6-1 :Flowmeter in general ...................................................................... 24

6-2 :Detector .......................................................................................... 24

Appendix .......................................................................................................... Appendix 1

Water level calculation (Bell mouth type) ............................................... Appendix 1

Water level calculation (Elbow ange type) ........................................... Appendix 3

Average ow velocity of detector (m/s) .................................................. Appendix 4

List of Figure

Figure 1 Open channel type Electromagnetic owmeter detector ............................................................... 2

Figure 2 State during ow rate measurement.................................................................................................. 2

Figure 3 Dimensional drawings of Bell mouth type detector........................................................................ 6

Figure 4 Dimensional drawings of a detector with Elbow ange ................................................................. 8

Figure 5 Dimensional drawings of a Dummy ................................................................................................. 10

Figure 6 Drawing of a Dummy with Elbow ange ......................................................................................... 11

Figure 7 Detector with Elbow ange ................................................................................................................ 12

Figure 8 Dummy with Elbow ange ................................................................................................................. 12

Figure 9 Measuring a large ow rate using dummy detectors ...................................................................... 13

Figure 10 Examples of setting Dummy detector............................................................................................... 13

Figure 11 Grounding terminal............................................................................................................................. 14

Figure 12 Connection of converter and detector.............................................................................................. 20

Figure 13 Wiring to connection box................................................................................................................... 20

Figure 14 Water level adjustment........................................................................................................................ 21

Figure A-1 Detector size selection graph.............................................................................................................. Appendix-2

List of Table

Table 1: Tightening torque of detector ............................................................................................................ 14