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
© 2008-2019 Azbil Corporation All Rights Reserved.
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

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 1
1 : Introduction
This manual describes how to install and operate the MagneWTM3000 FLEX/
PLUS NNK open channel electromagnetic owmeter detector. If you are using a
MagneWTM3000 FLEX/PLUS NNK in combination with a converter, refer to the
operation manual of the converter.
Before installing a detector, make sure that its size is adequate by referring to the
“Diameter Selection Graph” in the appendix of this manual.

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2MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 3
2 : External view
Figure 1 Open channel type Electromagnetic owmeter detector
Figure 2 State during ow rate measurement

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4MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 5
3 : Outline and standard specications
This open channel type electromagnetic owmeter is used for measuring ow rates
in open channels or closed conduits such as drainage canals. It is used for a large
variety of ow rate measurements, such as drainage under total pollutant load
regulations, water and sewer service, and irrigation water. (This owmeter is o󰀩cially
listed in the “General Specications of Electric Work” of the Japan Sewage Works
Agency.)
3-1 : Standard specications
Overall specications
Flow velocity range: 0 - 0.3 to 0 - 10 m/s. (Continuously adjustable)
Accuracy (Combined with the MGG10/14C):
Within the recommended
condition *
Outside of the
recommended condition
When detector is used
without dummy or dummies
+/- 1.0% F.S. +/- 2.0% F.S.
When detector is used with
dummy or dummies
+/- 2.0% F.S. +/- 4.0% F.S.
~Note *Recommended condition of use
Without dummy: Straight channel section on the upstream side of
detector is 3 times or more the nominal owmeter
diameter.
With dummy: Straight channel section on the upstream side of
detector is twice or more the water channel width.
Power supply: 90 to 250 V AC, 47 to 63 Hz
24V DC ± 10%, 110V DC ± 10%,
Power consumption: Approx. 10W (including detector and converter)
Detector
Material of body: Rigid vinyl chloride (parts in contact with uid: SUS304)
(Resisting {internal, external} pressure = 0.05MPa)
Materials of electrodes: SUS316L, Titanium
Structure: Open channel type (equivalent to JIS C 0920
Submersible Type) IEC IP68 equivalent
Cables (10m for each cable):One 4 core shielded cable (outer diameter 11.4 mm;
length 10 m) with cable protection vinyl tube (outer
diameter 22 mm; length 10 m)
Electrical conductivity of the measured uid: 5mS/cm
Ambient temperature: 0 to 40° C

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6MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
Mass: 50 mm (detector;10 kg. dummy; 1.4 kg)
400 mm (detector;130 kg, dummy; 33.4 kg)
100 mm (detector;23 kg. dummy; 3.4 kg)
600 mm (detector;220 kg, dummy; 59.4 kg)
200 mm (detector;45 kg. dummy; 10.4 kg)
3-2 : External dimensions
Bell mouth type detector
Installation interval
Flow direction
W
eir/Gate
bolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 50mm
Installation interval
Flow direction
Weir/Gatebolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 100mm

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 7
Installation interval
Weir/Gatebolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 200mm
Material
Name plate
Installation interval
Weir/Gate
bolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Flow direction
Size 400mm

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8MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
Installation interval
Weir/Gate
bolt
or more
Hole Dia. of Gate
hole
Flow direction
Material
Name plate
Size 600mm
Figure 3 Dimensional drawings of Bell mouth type detector

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 9
Detector with Elbow ange
Installation interval
Flow direction
Weir/Gate
bolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 50mm
Installation interval
Flow direction
Weir/Gate
bolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 100mm

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10 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
Installation interval
Weir/Gatebolt
or more
Hole Dia. of Gate
hole
Signal/Excitation cable
Size 200mm
Figure 4 Dimensional drawings of a detector with Elbow ange

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 11
Dummy
Flow direction
Bolt
or more
Weir/Gate
hole
Installation interval
Hole Dia. of Gate
Size 50mm
Flow direction
or more
Installation interval
bolt
Hole Dia. of Gate
Weir/Gate
hole
Size 100mm
Flow direction
or more
hole
Installation interval
bolt
Hole Dia. of Gate
Weir/Gate
Size 200mm

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12 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
Installation interval
Flow direction
Weir/Gate
bolt
or more
Hole Dia. of Gate
hole
Size 400mm
Flow direction
or more
Installation interval
Weir/Gate
bolt
Hole Dia. of Gate
hole
Size 600mm
Figure 5 Dimensional drawings of a Dummy

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MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 13
Dummy with an Elbow ange
Flow direction
Movable section
T
L
H
Size 50mm, 100mm, 200mm
Figure 6 Drawing of a Dummy with Elbow ange
Size 50mm 100mm 200mm
L 367 to 388 569 to 590 876 to 897
H 73 to 94 136 to 157 281 to 302
T 112 to 133 212 to 233 407 to 428

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14 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
3-3 : How to use model with an Elbow Flange
When no weir plate can be installed on the downstream side of a detector, use a
model with an Elbow ange.
(a) The water level (+ 7mm) can be adjusted since the elbow ange length can
be changed. A water level error caused by the use of a dummy detector can be
corrected by adjusting the arm.
Water level adjusting arm
(Shrinkable)
Figure 7 Detector with Elbow ange
(b) The measurement range can be increased in provision for a future ow rate
increase by installing a model with an elbow ange (with cover).
The cover can be mounted and removed easily with a buttery screw.
Flow direction
Movable section
Cover
Figure 8 Dummy with Elbow ange