Azbil MagneW Plus+, NNK140/941, NNK150/951 User Manual

CM2-MGN200-2001

MagneW PLUS+

Electromagnetic Flowmeter

Open Channel Flowmeter Detector

User’s Manual

Model: NNK140/941,NNK150/951

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 war­ranty 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

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

MagneW

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.

TM

3000 FLEX/PLUS NNK in combination with a converter, refer to the

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 1

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2 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

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2 : External view

Figure 1 Open channel type Electromagnetic owmeter detector

Figure 2 State during ow rate measurement

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 3

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4 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

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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):

When detector is used
without dummy or dummies

When detector is used with
dummy or dummies

~Note

*Recommended condition of use

Without dummy: Straight channel section on the upstream side of

With dummy: Straight channel section on the upstream side of

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)

Within the recommended

condition *

+/- 1.0% F.S. +/- 2.0% F.S.

+/- 2.0% F.S. +/- 4.0% F.S.

detector is 3 times or more the nominal owmeter

diameter.

detector is twice or more the water channel width.

Outside of the

recommended condition

(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

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 5

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W

Signal/Excitation cable

Signal/Excitation cable

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

Hole Dia. of Gate

eir/Gate

bolt

Flow direction

hole

Weir/Gate

Flow direction

Installation interval

or more

Size 50mm

bolt

Hole Dia. of Gate

hole

Installation interval

or more

Size 100mm

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Signal/Excitation cable

Weir/Gate

Weir/Gate

bolt

Size 200mm

bolt

Signal/Excitation cable

hole

Hole Dia. of Gate

Installation interval

or more

Hole Dia. of Gate

Flow direction

Name plate

Material

hole

Installation interval

or more

Size 400mm

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 7

Azbil Corporation

Weir/Gate

Flow direction

bolt

Name plate

Material

Size 600mm

Figure 3 Dimensional drawings of Bell mouth type detector

Hole Dia. of Gate

hole

Installation interval

or more

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Signal/Excitation cable

Signal/Excitation cable

Detector with Elbow ange

Weir/Gate

Flow direction

bolt

Hole Dia. of Gate

hole

Installation interval

or more

Weir/Gate

Size 50mm

bolt

Hole Dia. of Gate

Flow direction

hole

Installation interval

or more

Size 100mm

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 9

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Signal/Excitation cable

Weir/Gate

bolt

Size 200mm

Figure 4 Dimensional drawings of a detector with Elbow ange

Hole Dia. of Gate

hole

Installation interval

or more

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Azbil Corporation

Hole Dia. of Gate

Weir/Gate

Hole Dia. of Gate

Dummy

Weir/Gate

Bolt

Flow direction

hole

Installation interval

or more

Size 50mm

Weir/Gate

Flow direction

Flow direction

Size 100mm

bolt

bolt

Hole Dia. of Gate

hole

Installation interval

or more

Installation interval

or more

hole

Size 200mm

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 11

Azbil Corporation

Flow direction

Weir/Gate

Weir/Gate

Hole Dia. of Gate

Flow direction

Size 400mm

bolt

bolt

Hole Dia. of Gate

hole

Installation interval

or more

hole

Installation interval

or more

Size 600mm

Figure 5 Dimensional drawings of a Dummy

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Movable section

Dummy with an Elbow ange

Flow direction

H

T

L

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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Cover

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.

Movable section

Flow direction

Figure 8 Dummy with Elbow ange

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[1 flowmeter] 1 flowmeter

1 flowmeter

qq

Dummy

3-4 : How to use the Dummy detector

The measurable ow rate can be doubled, tripled, or quadrupled by installing 1,2,3
dummy detectors, respectively. A detector must be combined with dummy detectors
of the similar shape. If the ow rate is to be increased in future, the measurable
range can be expanded easily by installing a model with an elbow ange. (with a

cover).

1 dummy

2 dummies

Q=q Q=2q Q=3q

qq

Dummy

Detector

Detector

qq

Figure 9 Measuring a large ow rate using dummy detectors

Flow rate measurement in trunk sewerage
(400mm: one detector and three dummies)

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 15

Flow rate measurement in sewage treatment
plant
(600mm: one detector and nine dummies)

Figure 10 Examples of setting Dummy detector

Azbil Corporation

16 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

Azbil Corporation

Grounding terminal

4 : Installation

4-1 : Considerations on installation

Before the installation of a open channel type electromagnetic owmeter, observe

the following considerations.

• If you are asking a subcontractor to install a owmeter, you are advised to check
the procedure of installation work in writing in advance.

• Protect the ends of the dedicated cables attached to the body from water by
wrapping them with tape.

• When locating a owmeter on a gate, assign one worker to the upstream side

of the gate and another to the downstream side. Suspend the owmeter with a
chain block and lock its body with bolts with the specied tightening torque. Make
sure that the electrode is situated horizontally.

• Ground the owmeter with the grounding terminal. (The placement of the
grounding terminal is shown in Figure 11.)

• After mounting a detector, make sure that neither the body, nor the cables are
damaged.

• The gate board on which the elbow ange–type detector and dummy detectors

are installed must bear the weight of the detectors and of the water that ows
through them. Therefore, use a board that is strong enough and that will not
warp. If the gate board warps, leakage will occur between the board and the
detectors, and measurement will be incorrect.

• When removing and reinstalling the submersible electromagnetic owmeter from
the gate board for replacement, recalibration, or other purposes, check that the

board is not deformed and that there is no rust or foreign matter on the sealant
between the board and the detector.

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 17

Figure 11 Grounding terminal

Azbil Corporation

Table 1: Tightening torque of detector

Nominal size Tightening torque Nominal size Tightening torque

50mm

100mm

200mm

10 to 20

11 to 21

25 to 35

400mm

600mm

25 to 35

25 to 35

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

• Weigh the owmeter and post the weight in a place where one can see it.

• Check to see if a crane can be used.

• If rollers are to be used for moving a owmeter, encase the owmeter in a
wooden frame.

• Provide a chain block sca󰀨olding.

• Use a jack or a stepladder if necessary.

18 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

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A

Gate

4-3 : Example of installation work

Chief field supervisor

Meeting about installation

Flowmeter mounting

Assigned to unloading

the unit from a crane,

chain block etc.

<Example of personnel assignment>

Unloading worker

C

worker

Installation supervisor

Detailed supervision

from the beginning to

completion of installation

CD

Flowmeter mounting

worker

Support on upstream

side of the gate

B

Flowmeter mounting

worker

Bolt tightening on

downstream side of

the gate

Installation supervisor

B

E

Mounting worker

D

Upstream side

Detector

Downstream side

Chief field supervisor

A

Mounting worker

E

MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector 19

Azbil Corporation

4-4 : Examples of installation

Schematic drawings

1) It is recommended that a

Mounting
Gate

Weir

Flow measurement with a NNK
detector installed in an open
channel.

Flow measurement with a NNK
detector installed on the intake
end of channel.

gate with a lifting device be
used. If there is a possibility that
the upstream water level will
become lower than the inlet port

of the detector, a downstream

wirer plate or a adaptor must be
installed to avoid exposing the
measuring pipe in to air.

2) MagneW™3000 FLEX/
PLUS, the NNK detector, can

be mounted in direct or reverse

direction. However, wiring

connections must be made
accordingly.

Flow measurement with
submersible electromagnetic

ormeter installed in a pit.

Flow measurement with a NNK
detector installed in a discharge
tube.

Flow measurement with a NNK
detector installed in a discharge
end channel.

Discharge ow measurement with

a NNK detector with an elbow

ange installed in a profabrication

sewage disposal plant.

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Pictures of owmeter installation

Measurement with one 200mm detector
and one 200mm dummy

Installed on a water tank outlet (600mm) Installed in a discharge pipe of the plant (400mm)

High accuracy measurement with two 200mm
detectors

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Azbil Corporation

5 : Wiring

5-1 : Considerations on wiring

(a) Since the root of the 4-core cabtyre cable (including cores for signal and

excitation) is a watertight structure, do not pull them.

(b) The standard length of each cable of the detector is 10m. If the cable length

between a detector and a converter is over 10m, use a cable connection box
(Model No. NNZ 102-X-X)*. (See Figure 9.) Since the uid conductivity of the
water and drain is over 100 mS/cm, the cable can be extended to a maximum

of 100m. * Optional (Model SMC 11-HC)

(c) Make sure that the cable between the detector and the converter is laid at a

place where it cannot be damaged.

(d) Screw the tightening gland into the wire connection port of the converter in

order to ensure airtightness between the cabtyle cable and the wire connection
port.

(e) Cable should be as far from a large current cable as possible, and they should

not be laid in parallel.

5-2 : Wiring

(a) Install the converter in a place where it will not be exposed to direct sunshine.

(b) If to be used for a ow running reverse to the ow direction marked on the

(c) Ground the detector using the grounding terminal (Figure 11) (ground

(d) Never short-circuit the exciting terminals (X,Y) of the converter. Do not connect

detector (See the arrows in Figure 7 and Figure 8.), reverse the white and black
signal lines (White - B, Black - A)

resistance needs to be less than 100 W).

anything but a detector to the converter.

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Azbil Corporation

Category D ground

10m long cables as standard accessories.

Category D ground

The cable can be extended to 100m.

A detector is used in combination with a Open channel type detector (Type NNK)

and a converter (Type MGG10C/14C). Its output signals are instantaneous ow rate
signals (4 to 20mA DC), totalized output (pulse) and contact output (open collector).

Submersible detector
(Type NNK)

MGG10C/14C

Converter

P+ / P-

(Pulse output)

-

+

Green

Pulse

100V AC

or

Selected power

supply

Power

Exciting current

XY

HNG

Category D

A submersible electromagnetic flowmeter has

Red

ground

Figure 12 Connection of converter and detector

I+ / I-

(analog output)

-

+

4 to 20mA

Input signal

ABC

White

Contact output

-

+

Black

Shield

Contact input

-

+

Detector

Connected with standard 10mm long cable

A B C X Y

Cable connection box

(Model No NNZ102-X-X)

Wiring diagram when a cable connection box is used
for connecting more than 10m long cables.

Figure 13 Wiring to connection box

MGG10C/14C

Converter

XY ABC

Red

Green

(Model No. SMC11- HC)

Black

White

Shield

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Azbil Corporation

Elbow flange

W
(Fluid overflows from one.)

hen the two are the same height.

6 : Inspection

Inspect the following parts.

6-1 : Flowmeter in general

(a) Check to see if the detector and the converter are mounted as specied.

…. See “Considerations on installation” on page 17. “Examples of

installation” on page 20 and “Considerations on wiring” on page 22.
“Wiring” on page 22 in this manual.

(b) Check to see if the detector and the converter are connected correctly.

…. See “Considerations on wiring” on page 22. in this manual.

6-2 : Detector

(a) Are all the bolts tightened?

…. Make sure that all the bolts are tightened.

(b) Is the detector grounded?

…. Refer to the instructions related to the ground terminal in “Grounding

terminal” on page 17.

(c) Are the dummy detector and the detector installed at the same height?

…. If detectors with elbow anges are used, stop the ow and ll the elbow

anges with liquid and make sure that no uid comes out from either of the
detectors. If they are not installed at the same height, adjust it using the
water level adjusting arm. (See “Figure 14 Water level adjustment”.)

(d) Is the detector or the dummy detector size large enough for the maximum

ow rate?

… See “Detector size selection graph” on page 2 for checking this.

(e) Are oily suspended substances stuck to the inner wall?

…. Wipe with a cloth

Water level
error*

hen the two are not the same height.

24 MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector

* Correct the error using the water level adjusting arm by referring to 3-(4)

“Instructions relating to the Elbow Flange”.

W

Figure 14 Water level adjustment

Appendix

1

Water level calculation (Bell mouth type)

Example:

Mounting
Gate

Weir

Conversion of water head di󰀨erential (H1) to water level

in which : Water head di󰀨erential conversion coe󰀩cient 0.053

(Example)

Size and number of detector : 200mm, 1unit
Size and number of dummy detector : 200mm, 1unit

Width of weir plate (W) : 2m

H

Maximum ow rate (Qt.) : 500m3/h
Average ow velocity per detector (V) : 2.21m/s

H2

When the average ow velocity of the detector is 2.21[m/s]

Conversion of overow water depth (H2O) to water level

(Example)

When the maximum ow rate is 500[m

3

/h] and the sheathing board width is 2[m]

NNK-MagneW 3000 FLEX/PLUS Smart Electromagnetic Flowmeter Open channel Type Detector Appendix-1

Appendix Azbil Corporation

Figure A-1 Detector size selection graph

~Note

The expression “200mm(3)” refers to the structure consisting of one 200mm

detector and two 200mm dummies. (“200mm” referts to the detector’s size

or aperture and “(3)“means that the total number of detectors including
dummy detectors.)

[How to use the graph]

The ow rate is graduated from left to right along the lower horizontal axis.
If a line is drawn perpendicular to his axis, up wards to the top of this graph
by drawing a lines directly left from the points of intersection.

[Example] Water head dierential and ow velocity at ow rate of 500m

3

Draw a line upward from the point of 500mm

/hr, and it will intersect with

the following diagonal lines:

400mm(4), 400mm(3), 600mm(2) {=200mm(8), 400mm(1) {=200mm(4)},
200mm(3), 200mm(2) {=100mm(8)}, 200mm(1) {=100mm(4)}

When the line intersects with 200mm(2), the water head dierential H1 is
found to be about 0.26m and the ow velocity per detector V(m/s) is about

2.2m/s.

Example for a maximum ow rate of 500 (m

3

/h) and weir plate width of 2

(m):

3

/hr

Appendix-2 NNK-MagneW 3000 FLEX/PLUS Smart Electromagnetic Flowmeter Open channel Type Detector

Azbil Corporation Appendix

45 elbow

Gate

Water level calculation (Elbow ange type)

Example

Size and number of detector: 200mm, 1 unit

H3

H4

H5

Water level calculation of head di󰀨erence ( )

where : Water head conversion coe󰀩cient of the elbow ange: 0.055

Size and number of dummy detector: 200mm, 1 unit
Maximum ow rate (Qt.): 500m3/h
Average ow velocity per detector (V): 2.21m/s

Example: For a detector average ow velocity of 2.21 (m/s):

Elbow spouting height ( )

Where : Conversion coe󰀩cient of elbow spouting height: 0.028

Example: For a detector average ow velocity of 2.21 (m/s):

Nominal size 50mm 100mm 200mm

Dimension of

49mm 92mm 196mm

Consequently, THE head can be calculated as

NNK-MagneW 3000 FLEX/PLUS Smart Electromagnetic Flowmeter Open channel Type Detector Appendix-3

Appendix Azbil Corporation

Average ow velocity of detector (m/s)

Flow velocity conversion table

Where

: Flow velocity (m/s), : Flow rate (m3/h)

: Flow velocity conversion coe󰀩cient

(Example)

Detector size: 200(mm)

Flow rate per detector: 250(m

3

/h)

Nominal size

(mm)

50 0.1415

100 0.03537

200 0.00842

400 0.002210

600 0.0009824

Flow velocity conversion

coe󰀩cient K

Appendix-4 NNK-MagneW 3000 FLEX/PLUS Smart Electromagnetic Flowmeter Open channel Type Detector

Terms and Conditions

We would like to express our appreciation for your purchase and use of Azbil Corporation’s products.

You are required to acknowledge and agree upon the following terms and conditions for your purchase of Azbil Corporation’s products (system
products, field instruments, control valves, and control products), unless otherwise stated in any separate document, including, without limitation,
estimation sheets, written agreements, catalogs, specifications and instruction manuals.

1. Warranty period and warranty scope

1.1 Warranty period

Azbil Corporation’s products shall be warranted for one (1) year from the date of your purchase of the said products or the delivery of the
said products to a place designated by you.

1.2 Warranty scope

In the event that Azbil Corporation’s product has any failure attributable to azbil during the aforementioned warranty period, Azbil
Corporation shall, without charge, deliver a replacement for the said product to the place where you purchased, or repair the said
product and deliver it to the aforementioned place. Notwithstanding the foregoing, any failure falling under one of the following shall
not be covered under this warranty:

(1) Failure caused by your improper use of azbil product (noncompliance with conditions, environment of use, precautions, etc. set

forth in catalogs, specifications, instruction manuals, etc.);
(2) Failure caused for other reasons than Azbil Corporation’s product;
(3) Failure caused by any modification or repair made by any person other than Azbil Corporation or Azbil Corporation’s

subcontractors;
(4) Failure caused by your use of Azbil Corporation’s product in a manner not conforming to the intended usage of that product;
(5) Failure that the state-of-the-art at the time of Azbil Corporation’s shipment did not allow Azbil Corporation to predict; or
(6) Failure that arose from any reason not attributable to Azbil Corporation, including, without limitation, acts of God, disasters, and

actions taken by a third party.

Please note that the term “warranty” as used herein refers to equipment-only-warranty, and Azbil Corporation shall not be liable for any
damages, including direct, indirect, special, incidental or consequential damages in connection with or arising out of Azbil Corporation’s
products.

2. Ascertainment of suitability

You are required to ascertain the suitability of Azbil Corporation’s product in case of your use of the same with your machinery,
equipment, etc. (hereinafter referred to as “Equipment”) on your own responsibility, taking the following matters into consideration:

(1) Regulations and standards or laws that your Equipment is to comply with.
(2) Examples of application described in any documents provided by Azbil Corporation are for your reference purpose only, and

you are required to check the functions and safety of your Equipment prior to your use.
(3) Measures to be taken to secure the required level of the reliability and safety of your Equipment in your use

Although azbil is constantly making efforts to improve the quality and reliability of Azbil Corporation’s products, there exists
a possibility that parts and machinery may break down. You are required to provide your Equipment with safety design such
as fool-proof design,*
physical injuries, fires, significant damage, and so forth. Furthermore, fault avoidance,*3 fault tolerance,*4 or the like should be
incorporated so that the said Equipment can satisfy the level of reliability and safety required for your use.

*1. A design that is safe even if the user makes an error.
*2. A design that is safe even if the device fails.
*3. Avoidance of device failure by using highly reliable components, etc.
*4. The use of redundancy.

3. Precautions and restrictions on application

3.1 Restrictions on application

Please follow the table below for use in nuclear power or radiation-related equipment.

Nuclear power quality*5 required Nuclear power quality*5 not required

Within a radiation
controlled area*

Outside a radiation
controlled area*

Cannot be used (except for limit switches for

6

nuclear power*7)

Cannot be used (except for limit switches for

6

nuclear power*7)

1

and fail-safe design*2 (anti-flame propagation design, etc.), whereby preventing any occurrence of

Cannot be used (except for limit switches for
nuclear power*7)

Can be used

*5. Nuclear power quality: compliance with JEAG 4121 required
*6. Radiation controlled area: an area governed by the requirements of article 3 of “Rules on the Prevention of Harm from

Ionizing Radiation,” article 2 2 4 of “Regulations on Installation and Operation of Nuclear Reactors for Practical Power
Generation,” article 4 of “Determining the Quantity, etc., of Radiation-Emitting Isotopes,”etc.

*7. Limit switch for nuclear power: a limit switch designed, manufactured and sold according to IEEE 382 and JEAG 4121.

Any Azbil Corporation’s products shall not be used for/with medical equipment.

The products are for industrial use. Do not allow general consumers to install or use any Azbil Corporation’s product. However, azbil
products can be incorporated into products used by general consumers. If you intend to use a product for that purpose, please contact
one of our sales representatives.

3.2 Precautions on application

you are required to conduct a consultation with our sales representative and understand detail specifications, cautions for operation,
and so forth by reference to catalogs, specifications, instruction manual, etc. in case that you intend to use azbil product for any purposes
specified in (1) through (6) below. Moreover, you are required to provide your Equipment with fool-proof design, fail-safe design, anti­flame propagation design, fault avoidance, fault tolerance, and other kinds of protection/safety circuit design on your own responsibility
to ensure reliability and safety, whereby preventing problems caused by failure or nonconformity.

(1) For use under such conditions or in such environments as not stated in technical documents, including catalogs, specification,

and instruction manuals

(2) For use of specific purposes, such as:

* Nuclear energy/radiation related facilities

[When used outside a radiation controlled area and where nuclear power quality is not required]

[When the limit switch for nuclear power is used]
* Machinery or equipment for space/sea bottom
* Transportation equipment
[Railway, aircraft, vessels, vehicle equipment, etc.]
* Antidisaster/crime-prevention equipment
* Burning appliances
* Electrothermal equipment
* Amusement facilities
* Facilities/applications associated directly with billing

(3) Supply systems such as electricity/gas/water supply systems, large-scale communication systems, and traffic/air traffic control

systems requiring high reliability
(4) Facilities that are to comply with regulations of governmental/public agencies or specific industries
(5) Machinery or equipment that may affect human lives, human bodies or properties
(6) Other machinery or equipment equivalent to those set forth in items (1) to (5) above which require high reliability and safety

4. Precautions against long-term use

Use of Azbil Corporation’s products, including switches, which contain electronic components, over a prolonged period may degrade
insulation or increase contact-resistance and may result in heat generation or any other similar problem causing such product or switch
to develop safety hazards such as smoking, ignition, and electrification. Although acceleration of the above situation varies depending
on the conditions or environment of use of the products, you are required not to use any Azbil Corporation’s products for a period
exceeding ten (10) years unless otherwise stated in specifications or instruction manuals.

5. Recommendation for renewal

Mechanical components, such as relays and switches, used for Azbil Corporation’s products will reach the end of their life due to wear by
repetitious open/close operations.

In addition, electronic components such as electrolytic capacitors will reach the end of their life due to aged deterioration based on
the conditions or environment in which such electronic components are used. Although acceleration of the above situation varies
depending on the conditions or environment of use, the number of open/close operations of relays, etc. as prescribed in specifications
or instruction manuals, or depending on the design margin of your machine or equipment, you are required to renew any Azbil
Corporation’s products every 5 to 10 years unless otherwise specified in specifications or instruction manuals. System products, field
instruments (sensors such as pressure/flow/level sensors, regulating valves, etc.) will reach the end of their life due to aged deterioration
of parts. For those parts that will reach the end of their life due to aged deterioration, recommended replacement cycles are prescribed.
You are required to replace parts based on such recommended replacement cycles.

6. Other precautions

Prior to your use of Azbil Corporation’s products, you are required to understand and comply with specifications (e.g., conditions and
environment of use), precautions, warnings/cautions/notices as set forth in the technical documents prepared for individual Azbil
Corporation’s products, such as catalogs, specifications, and instruction manuals to ensure the quality, reliability, and safety of those
products.

7. Changes to specifications

Please note that the descriptions contained in any documents provided by azbil are subject to change without notice for improvement
or for any other reason. For inquires or information on specifications as you may need to check, please contact our branch offices or
sales offices, or your local sales agents.

8. Discontinuance of the supply of products/parts

Please note that the production of any Azbil Corporation’s product may be discontinued without notice. After manufacturing is
discontinued, we may not be able to provide replacement products even within the warranty period.

For repairable products, we will, in principle, undertake repairs for five (5) years after the discontinuance of those products. In
some cases, however, we cannot undertake such repairs for reasons, such as the absence of repair parts. For system products, field
instruments, we may not be able to undertake parts replacement for similar reasons.

9. Scope of services

Prices of Azbil Corporation’s products do not include any charges for services such as engineer dispatch service. Accordingly, a separate
fee will be charged in any of the following cases:

(1) Installation, adjustment, guidance, and attendance at a test run
(2) Maintenance, inspection, adjustment, and repair
(3) Technical guidance and technical education
(4) Special test or special inspection of a product under the conditions specified by you

Please note that we cannot provide any services as set forth above in a nuclear energy controlled area (radiation controlled area) or at a
place where the level of exposure to radiation is equivalent to that in a nuclear energy controlled area.

AAS-511A-014-10

Document Number: CM2-MGN200-2001

Document Name: MagneW PLUS+ Electromagnetic Flowmeter

Open Channel Flowmeter Detector User’s
Manual

Model NNK140/941, NNK150/951

Date: 1st edition: Nov. 2008

3rd edition: Nov. 2019

Issued/Edited by: Azbil Corporation