YOKOGAWA ADMAG AM100D User manual

User's
Manual Models AM100D, AM200D,
AM300D, AM400D, and AM500D
Magnetic Flow Tube
IM 1E6D0-01E
IM 1E6D0-01E
17th Edition

i
IM 1E7D0-01E
CONTENTS
FD No. IM 1E6D0-01E
17th Edition: Nov. 2002 (YG)
All Rights Reserved, Copyright © 1990, Yokogawa Electric Corporation
CONTENTS
1. INTRODUCTION..........................................................................................1-1
2. HANDLING PRECAUTIONS .......................................................................2-1
2.1 Checking Model and Specifications.................................................... 2-1
2.2 Accessories ......................................................................................... 2-1
2.3 Storage Precautions............................................................................ 2-1
2.4 Installation Location Precautions ........................................................ 2-1
2.5 Terminal Box Reorientation Precautions ............................................ 2-1
3. INSTALLATION ...........................................................................................3-1
3.1 Piping Design Precautions.................................................................. 3-1
3.2 Handling Precautions .......................................................................... 3-3
3.2.1 General Precautions..................................................................... 3-3
3.2.2 Flow Tube Piping ......................................................................... 3-4
3.3 Mounting.............................................................................................. 3-5
3.3.1 Nominal Diameter 2.5 mm (0.1˝) to 10 mm (0.4˝)
Union Joint Type .......................................................................... 3-5
3.3.2 Nominal Diameter 2.5mm (0.1˝) to 40mm (1.5˝) Wafer Type ..... 3-6
3.3.3 Nominal Diameter 50 mm(2˝) to 200 mm(8˝) Wafer Type .......... 3-9
3.3.4 Nominal Diameter 15 mm (0.5˝) to 400 mm (16˝)
Flange Type ............................................................................... 3-12
3.3.5 Mominal Diameter 500 mm (20˝) to 2600 (104˝)
Flange Type ............................................................................... 3-14
3.3.6 Mounting Procedure for Sanitary Type ...................................... 3-15
3.4 Wiring Precautions ............................................................................ 3-16
3.4.1 Protective Grounding.................................................................. 3-16
3.4.2 General Precautions................................................................... 3-16
3.4.3 Cable Types ............................................................................... 3-16
3.4.4 Connnection to AM11Magnetic Flow Converter ........................ 3-17
3.4.5 Wiring Ports................................................................................ 3-18
4. MAINTENANCE...........................................................................................4-1
4.1 Regular Inspection Items .................................................................... 4-1
4.2 Trouble Shooting................................................................................. 4-1
5. OUTLINE......................................................................................................5-1
6. HAZARDOUS DUTY TYPE INSTRUMENT ................................................ 6-1
6.1 FM ....................................................................................................... 6-1
6.2 CSA ..................................................................................................... 6-2
6.3 CENELEC (KEMA).............................................................................. 6-2
6.4 JIS ....................................................................................................... 6-3
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF
EQUIPMENT ...................................................................................... EX-B03E

IM 1E6D0-01E
1-1
1. INTRODUCTION
1. INTRODUCTION
This instrument has been already adjusted at the
factory before shipment.
To ensure correct use of the instrument, please read
this manual thoroughly and fully understand how to
operate the instrument before operating it.
䊏Regarding This Manual
•This manual should be passed on to the end user.
•Before use, read this manual thoroughly to compre-
hend its contents.
•The contents of this manual may be changed
without prior notice.
•All rights reserved. No part of this manual may be
reproduced in any form without Yokogawa’s written
permission.
•Yokogawa makes no warranty of any kind with
regard to this material, including, but not limited to,
implied warranties of merchantability and suitability
for a particular purpose.
•All reasonable effort has been made to ensure the
accuracy of the contents of this manual. However, if
any errors are found, please inform Yokogawa.
•Yokogawa assumes no responsibilities for this
product except as stated in the warranty.
•If the customer or any third party is harmed by the
use of this product, Yokogawa assumes no responsi-
bility for any such harm owing to any defects in the
product which were not predictable, or for any
indirect damages.
䊏Safety Precautions
•The following general safety precautions must be
observed during all phases of operation, service, and
repair of this instrument. Failure to comply with
these precautions or with specific WARNINGS
given elsewhere in this manual violates safety
standards of design, manufacture, and intended use
of the instrument. YOKOGAWA Electric Corpora-
tion assumes no liability for the customer’s failure to
comply with these requirements. If this instrument is
used in a manner not specified in this manual, the
protection provided by this instrument may be
impaired.
The following safety symbol marks are used in
this manual and instrument;
WARNING
A WARNING sign denotes a hazard. It calls
attention to procedure, practice, condition or the
like, which, if not correctly performed or adhered
to, could result in injury or death of personnel.
CAUTION
A CAUTION sign denotes a hazard. It calls
attention to procedure, practice, condition or the
like, which, if not correctly performed or adhered
to, could result in damage to or destruction of
part or all of the product.
IMPORTANT
A IMPORTANT sign denotes an attention to
avoid leading to damage to instrument or system
failure.
NOTE
A NOTE sign denotes a information for essential
understanding of the operation and features.
Protective grounding terminal.
Function grounding terminal. This terminal
should not be used as a “Protective grounding
terminal”.
Alternating current.
Direct current.

IM 1E6D0-01E
1-2
1. INTRODUCTION
䊏Warranty
•The guaranteed term of this instrument is described
in the quotation. We repair the damages that
occurred during the guaranteed term for free.
•Please contact with our sales office when this
instrument is damaged.
•If the instrument has trouble, please inform us
model code, serial number, and concrete substances
or situations. It is preferable to be attached a outline
or data.
•We decide after the examination if free repair is
available or not.
•Please consent to the followings for causes of
damages that are not available as free repair, even if
it occured during the guaranteed term.
A:Unsuitable or insufficient maintenance by the
customer.
B: The handling, using, or storage that ignore the
design and specifications of the instrument.
C: Unsuitable location that ignore the description in
this manual.
D:Remaking or repair by a person except whom we
entrust.
E: Unsuitable removing after delivered.
F: A natural disaster (ex. a fire, earthquake, storm and
flood, thunderbolt) and external causes.
For the safety using;
WARNING
•The Magnetic Flow Tube is a heavy instrument.
Please give attention to prevent that persons
are injured by carrying or installing. It is prefer-
able for carrying the instrument to use a cart
and be done by two or more persons.
•In wiring, please confirm that the cables are not
powered before connecting.
•When removing the instrument from hazardous
processes, avoid contact with the fluid and the
interior of the meter.
•In case of Hazardous duty type instrument,
further requirements and differences are
described in Chapter 6 “HAZARDOUS DUTY
TYPE INSTRUMENT”. The description in
Chapter 6 is prior to other description in this
instruction manual.

IM 1E6D0-01E
2-1
2. HANDLING PRECAUTIONS
2. HANDLING PRECAUTIONS
This instrument has been already tested thoroughly at
the factory. When the instrument is delivered, please
check externals and make sure that no damage
occurred during transportation.
In this chapter, handling precautions are described.
Please read this chapter thoroughly at first. And please
refer to the relative matter about other ones.
If you have any problems or questions, please make
contact with Yokogawa sales office.
2.1 Checking Model and
Specifications
The model and specifications are shown on the Data
Plate. Please confirm the specifications between the
instrument that was delivered and the purchase order
(refer to the chapter 5. Outline).
Please let us know Model and Serial No. when making
contact with Yokogawa sales office.
MAGNETIC
FLOW DETECTOR
AM L
H
mm
Made in Japan
F0201.EPS
Figure 2.1 Data Plate
2.2 Accessories
When the instrument is delivered, please make sure
that the following accessories are in the package.
•Centering device 1-set (for wafer type)
•Hexagonal wrench 1-piece (for hazardous duty type
except JIS flameproof type)
•Hexagonal wrench 2-piece (only for JIS flameproof
type)
2.3 Storage Precautions
In case the instrument is expected to be stored over a
long term, please give attention to the followings;
•The instrument should be stored in its original
packing condition.
•The storage location should be selected according to
the following conditions:
1) The location where it is not exposed to rain or
water.
2) The location where there is few vibration or
shock.
3) Temperature and humidity should be:
Temperature: –30 to 60˚C (–22 to 140˚F)
Humidity: 5 to 80% RH (no condensation)
Preferable ambient temperature and humidity
are 25˚C(77˚F) and about 65% RH.
2.4 Installation Location
Precautions
Please select the installation location considering the
following items to ensure long term stable operation of
the flow tube.
•Ambient Temperature:
Please avoid to install the instrument at the location
where temperature changes continuously. If the
location receives radiant heat from the plant, provide
heat insulation or improve ventilation.
•Atmospheric Condition:
Please avoid to install the instrument in an corrosive
atmosphere. In case of installing in the corrosive
atmosphere, please keep ventilating sufficiently and
prevent rain from entering the conduit.
•Vibration or shock:
Please avoid to install the instrument at the location
where there is heavy vibration or shock.
2.5 Terminal Box Reori-
entation Precautions
Please do not change the terminal box orientation at
the customer’s site. If the terminal box reorientation is
required, please contact Yokogawa office or service
center.

IM 1E6D0-01E
3-1
3. INSTALLATION
3. INSTALLATION
CAUTION
This instrument must be installed by expert
engineer or skilled personnel. The procedures
described in this chapter are not permitted for
operators.
3.1 Piping Design Pre-
cautions
IMPORTANT
Please design the correct piping referring to the
followings to prevent damage for flow tube and
to keep correct measuring.
(1) Location
IMPORTANT
Please install the flow tube to the location where
it is not exposed to direct sunlight and ambient
temperature is –10 to + 60°C (14 to 140°F).
(2) Noise Rejection
IMPORTANT
The instrument should be installed away from
large electrical motors, transformers and other
power sources in order to avoid interference with
the measurement.
(3) Length of Straight Run
To keep accurate measuring, JIS B7554 “Electro
Magnetic Flow Tubes” explains about upstream piping
condition of Magnetic Flow Tubes.
We recommend to our customers about the piping
conditions shown in Figure 3.1.1 based on JIS B7554
and our piping condition test data.
Gate valve
fully open Reducer pipe Expander pipe
Tee 90°degrees bent Various types of valves
5 D or more 2 D or more 2 D or more
2 D or more
10 D or more
10 D or more5 D or more5 D or more Do not care to 0 D Do not care to 0 D
Do not care to 0 D Do not care to 0 D
F030101.EPS
D: Nominal diameter of flow tube
Figure 3.1.1 Minimum Length of Required Straight Run
NOTE
1. Nothing must be inserted or installed in the
metering pipe than may interfere with the
magnetic field, induced signal voltages, and
flow velocity distribution.
2. These straight runs may not be required on
the downstream side flowmeter. However, if
the downstream valve or other fittings cause
channeling on the upstream side, provide a
straight run of 2 D to 3 D on the downstream
side.
(4) Liquid Conductivity
IMPORTANT
Please avoid to install the flow tube at location
where liquid conductivity is likely to be non-
uniform. Because it is possible to have bad
influences to the flow indication by non-uniform
conductivity when a chemical liquid is injected
from upstream side close to the flow tube. When
this occurs, it is recommended that chemical
application ports are installed on the downstream
side of the flow tube. In case chemicals must be
added upstream side, please keep the pipe
length enough so that liquid is properly mixed.
(BAD)
Upstream side (GOOD)
Downstream side
F030102.EPS
Figure 3.1.2 Chemical Insertion

IM 1E6D0-01E
3-2
3. INSTALLATION
(5) Liquid Sealing Compound
IMPORTANT
Please give attention in using Liquid Sealing
Compound to the piping, because it brings bad
influences to measurement by flowing out and
cover the surfaces of electrode and earth-ring.
(6) Service Area
Please select the location where there is enough area to
service installing, wiring, overhaul, etc.
(7) Bypass Line
It is recommended to install the Bypass Line to
facilitate maintenance and zero adjustment.
Bypass valve
Block valve
Block
valve
F030103.EPS
Figure 3.1.3 Bypass Line
(8) Supporting the Flow Tube
CAUTION
Please avoid to support only the flow tube, but
fix pipes at first and support the flow tube by
pipes to protect the flow tube from forces caused
by vibration, shock, expansion and contraction
through piping.
For small sized flow tubes, please provide a
mounting base so thet the tubes are fixed in the
piping. See the section 3.3 Mounting.
(9) Piping Condition
IMPORTANT
The piping should be designed so that a full pipe
is maintained at all times to prevent loss of
signal and erroneous readings.
Please design the piping that a fluid is always filled in
the pipes. The Vertical Mounting is effective for fluids
that is easily separate or slurry settles within pipes.
In this case, please flow a fluid from bottom to up.
(GOOD)
(GOOD)
(BAD)
(BAD)
h
h>0
h>0
h
F030104.EPS
Horizontal mounting Vertical mounting
Figure 3.1.4 Filling the Pipe with Liquid
(10) No Air Bubbles
IMPORTANT
Please give attention to prevent bad influences
or measuring errors from air bubbles that gath-
ers inside measuring pipes.
In case the fluid includes air bubbles, please design the
piping that prevent to gather air bubbles. In case valves
are installed upstream of the flow tube, it is possible
that a valve causes air bubbles, please install the flow
tube upstream side of a valve.
(GOOD)
(BAD)
F030105.EPS
(BAD)
(GOOD)
Figure 3.1.5 Avoiding Air Bubbles
(11) Mounting Direction
IMPORTANT
When the electrodes are vertical to ground, the
electrode is covered with air bubbles at upper
side or slurry at downside, and it may cause the
measuring errors.
Please be sure to mount the terminal box upper
side of piping to prevent water penetration into
terminal box.
(Good)
(No good)
Electrodes
Air Bubbles
Slurry
Electrodes
F030106.EPS
(No good)
Water slowly
percolates
downward into
terminal box.
Figure 3.1.6 Mounting Direction

IM 1E6D0-01E
3-3
3. INSTALLATION
(12) Grounding
IMPORTANT
Improper grounding can have an adverse affect
on the flow measurement. Please ensure that
the instrument is properly grounded.
The electromotive force of the magnetic flow tube is
minute and it is easy to be affected by noise. And also
that reference electric potential is the same as the
measuring fluid potential. Therefore, the reference
electric potential (terminal potential) of the Flow Tube
and the Converter/Amplifier also need to be the same
as the measuring fluid. And moreover, that the poten-
tial must be the same with ground.
Please be sure to ground according to Figure 3.1.7.
Earth ring
600 V vinyl insulated
electric cable
(2 mm
2
or larger)
Grounding resistance 100 Ωor less
(10 Ωor less for JIS flameproof type)
F030107.EPS
In case earth rings are not used.
(Available only for metal piping)
In case earth rings are used.
Note; See "3.4.1 Protective Grounding" for information on
protective grounding.
Figure 3.1.7 Grounding
3.2 Handling Precau-
tions
WARNING
The Magnetic Flow tube is a heavy instrument.
Please be careful to prevent persons from
injuring when it is handled.
3.2.1 General Precautions
(1) Precaution for Carrying
The Magnetic Flow Tube is packed tightly. When it is
unpacked, please give attention to prevent damages to
the flow tube. And to prevent the accident during carry
to the installing location, please carry it near the
location keeping packed as it delivered.
CAUTION
In case the Magnetic Flow Tube lifts up, please
refer to Figure 3.2.1. Please never lift up by
using a bar through the flow tube. It damages
liner severely.
Vertical Lifting Sling
Rigging Method
Horizontal Lifting
F030201.EPS
Figure 3.2.1 Lifting Flow Tubes

IM 1E6D0-01E
3-4
3. INSTALLATION
(2) Precaution for Shock
CAUTION
Care should be taken not to drop the flow tube
or subject it to excessive shock. This may lead
to liner damage which will cause inaccurate
readings.
(3) Flange Protection Covers
IMPORTANT
Please keep the protection cover (ex. corrugated
paper or anything possible to protect) attached
with flange except when mounting to the pipe.
(4) Terminal Box Cover
IMPORTANT
Please never leave the terminal box cover open
until wiring to prevent insulation deterioration.
(5) Long-term Non-use
IMPORTANT
It is not preferable to leave the flow tube for long
term non-use after installation.
In case the flow tube is compelled to do that,
please take care of the flow tube by the follow-
ings.
•Confirmation of Sealing Condition for the Flow
Tube
Please confirm the sealing conditions of the terminal
box screw and wiring ports.
In case of the Conduit Piping, please provide the
drain plugs or waterproof glands to it to prevent that
moisture or water penetrates into the flow tube
through the conduit.
•Regular Inspections
Please inspect the sealing condition (as above
mentioned) and inside of the terminal box. And
when it is suspect that water penetration into the
inside flow tube (ex. rain fall), please inspect when
it happened.
3.2.2 Flow Tube Piping
CAUTION
Mis-aligned or slanted piping can lead to leakage
and damage to flanges.
•Please correct mis-alignment or slanted piping and
improper distance between mounting flanges before
install the flow tube. (Please refer to Figure 3.2.2)
•Inside a pipeline which is newly installed, some
foreign substances (such as welding scrap or wood
chips) may exist. Please remove them by flushing
piping before mounting the flow tube.
Slant Mis-alignment
F030202.EPS
Figure 3.2.2 Slant and Mis-alignment of Flow Tube Piping

IM 1E6D0-01E
3-5
3. INSTALLATION
3.3 Mounting
3.3.1 Nominal Diameter 2.5 mm (0.1˝)
to 10 mm (0.4˝) Union Joint
Type
NOTE
Please ensure to use the attached connecting
fittings.
Ceramic linings with a diameter of 2.5, 5 or 10 mm are
connected using union joints.
Use the connecting fittings according to the table
below. Depending on whether the fitting is to be
welded to or screwed on to the piping.
Table 3.3.1 Fitting Dimensions
D
ØA
ØA
ØB
ØB
ØC
4
(0.16") 11.5(0.4")
Screw joint (Code: U2, U3)
Weld joint (Code: U1)
30(1.2")
4
(0.16") 35(1.38")
10(0.39")
0
–0.1
ØC
0.3
0
ØD
0
–0.1
Size
mm(inch) Code A B C D
2.5(0.1)
5(0.2)
10(0.4)
U2
U3
U2
U3
U2
U3
22(0.87")
22(0.87")
22(0.87")
22(0.87")
25(0.98")
25(0.98")
8(0.31")
8(0.31")
8(0.31")
8(0.31")
10(0.39")
10(0.39")
18.5(0.73")
18.5(0.73")
18.5(0.73")
18.5(0.73")
22.5(0.89")
22.5(0.89")
R1/4(PT1/4)
NPT1/4
R1/4(PT1/4)
NPT1/4
R3/8(PT3/8)
NPT3/8
Size
mm(inch) Code A B C D
2.5(0.1)
5(0.2)
10(0.4)
U1
U1
U1
22(0.87")
22(0.87")
25(0.98")
8(0.31")
8(0.31")
10(0.39")
14.3(0.56")
14.3(0.56")
17.8(0.70")
18.5(0.73")
18.5(0.73")
22.5(0.89")
T030301.EPS
(1) Mounting Direction
Please mount the Magnetic Flow Tube matching the
flow direction of the fluid to be measured with the
direction of the arrow mark on the flow tube.
IMPORTANT
If it is impossible to match the direction, please
never remodel by changing direction of the
terminal box. In case the measuring fluid flows
against the arrow direction, please refer to the
section “Reversing Flow Direction” in the Instruc-
tion Manual of AM11 Magnetic Flow Converter.
(2) Connecting Process Piping
Weld or screw the connecting fittings to the process
piping.
IMPORTANT
• Please be sure to pass the connecting fittings
through the union joint nuts in advance. Then
connect the connecting fitting to the piping by
screwing or welding the connecting fitting to the
piping (see Figure 3.3.1).
• In case of weld joint type, please pay attention
the welding condition to avoid deforming piping
or making the stagnant portion of the fluid;
joint preparation, level defference in butt joint,
welding current.
(3) Positioning the Flow Tube
Install the magnetic flow tube on a mounting base and
position it so that the center axis of the flow tube is
aligned with that of the piping. Then mount the flow
tube to union joint nuts by screwing the nuts to the
connecting ports of the flow tube.
CAUTION
The ceramic pipe will be damaged if they are
tightened when they are not properly aligned.