YOKOGAWA Admag AXW User manual

User’s
Manual AXW
Magnetic Flowmeter
Remote Flowtube
IM 01E25D11-01EN
IM 01E25D11-01EN
2nd Edition

i
IM 01E25D11-01EN
AXW
Magnetic Flowmeter
Remote Flowtube
IM 01E25D11-01EN 2nd Edition
2nd Edition: Sep. 2013 (KP)
All Rights Reserved, Copyright © 2012, Yokogawa Electric Corporation
Contents
1. INTRODUCTION ........................................................................................ 1-1
1.1 Using the Magnetic Flowmeter Safely ............................................................ 1-2
1.2 Warranty .............................................................................................................1-3
1.3 Combination Remote Converters ................................................................... 1-3
2. HANDLING PRECAUTIONS ..................................................................... 2-1
2.1 Checking Model and Specications ............................................................... 2-1
2.2 Storage Precautions .........................................................................................2-1
2.3 Installation Location 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 Flowmeter Piping ...............................................................................3-4
3.3 Mounting Procedures ....................................................................................... 3-4
4. WIRING ...................................................................................................... 4-1
4.1 Wiring the Remote Flowtube ........................................................................... 4-1
4.1.1 Wiring Precautions ............................................................................. 4-1
4.1.2 Cables ................................................................................................ 4-2
4.1.3 Wiring Ports .......................................................................................4-3
4.1.4 Wiring Connections ............................................................................4-4
5. MAINTENANCE ......................................................................................... 5-1
5.1 Changing Direction of Electrical Connection ................................................ 5-1
5.2 Regular Inspection Items ................................................................................. 5-2
5.3 Excitation Coil and Insulation Resistance Check ........................................ 5-2
5.4 Troubleshooting ................................................................................................ 5-3
5.4.1 No Indication ...................................................................................... 5-3
5.4.2 Unstable Zero ....................................................................................5-4
5.4.3 Disagreement Between Indication and Actual Flow ..........................5-5
6. OUTLINE .................................................................................................... 6-1
n STANDARD SPECIFICATIONS ........................................................................ 6-1
n STANDARD PERFORMANCE .......................................................................... 6-1
n NORMAL OPERATING CONDITIONS ..............................................................6-2
n MODEL AND SUFFIX CODE ............................................................................. 6-3

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IM 01E25D11-01EN
n OPTIONAL SPECIFICATIONS ......................................................................... 6-5
n OPTIONAL SPECIFICATIONS (continued) ..................................................... 6-6
n DIMENSIONAL DRAWINGS ............................................................................. 6-7
n SIZING DATA .................................................................................................... 6-19
Revision Information ...............................................................................................i

<1. INTRODUCTION> 1-1
IM 01E25D11-01EN
1. INTRODUCTION
This instrument has been 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.
NOTE
The ADMAG AXW remote owtube is used in
combination with the AXFA11 remote converter.
This manual describes the hardware
conguration of the ADMAG AXW remote
owtube. For details of the AXFA11 remote
converter, see IM 01E20C01-01E instruction
manual.
When setting the parameter “C30” in the remote
converter, select “ADMAG AXF” for ADMAG
AXW remote owtube.
n Regarding This User’s Manual
• This manual should be provided to the end
user.
• Before use, read this manual thoroughly to
comprehend its contents.
• The contents of this manual may be changed
without prior notice.
• All rights are 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 or omissions are found,
please inform Yokogawa.
• Yokogawa assumes no responsibilities for this
product except as stated in the warranty.
• Please note that this user’s manual may not
be revised for any specication changes,
construction changes or operating part changes
that are not considered to affect function or
performance.
• If the customer or any third party is harmed by
the use of this product, Yokogawa assumes
no responsibility for any such harm owing to
any defects in the product which were not
predictable, or for any indirect damages.
n Safety and Modication 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
specic WARNINGS given elsewhere in
this manual violates safety standards of
design, manufacture, and intended use of the
instrument. Yokogawa assumes no liability for
the customer’s failure to comply with these
requirements. If this instrument is used in
a manner not specied in this manual, the
protection provided by this instrument may be
impaired.
• Yokogawa will not be liable for malfunctions or
damage resulting from any modication made
to this instrument by the customer.
• The following safety symbol marks are used in
this user’s 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
An IMPORTANT sign denotes that attention is
required to avoid damage to the instrument or
system failure.
NOTE
A NOTE sign denotes information necessary
for essential understanding of operation and
features.

<1. INTRODUCTION> 1-2
IM 01E25D11-01EN
Protective grounding terminal
Functional grounding terminal
(This terminal should not be used as a
protective grounding terminal.)
Alternating current
Direct current
1.1 Using the Magnetic
Flowmeter Safely
(1) Installation
WARNING
• Installation of the magnetic owmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to installation.
• The magnetic owmeter must be installed
within the specication conditions.
• The magnetic owmeter is a heavy instrument.
Be careful that no damage is caused to
personnel through accidentally dropping it, or
by exerting excessive force on the magnetic
owmeter. When moving the magnetic
owmeter, always use a trolley, forklift, or crane
and have at least two people carry it.
• When the magnetic owmeter is processing
hot uids, the instrument itself may become
extremely hot. Take sufcient care not to get
burnt.
• Where the uid being processed is a toxic
substance, avoid contact with the uid and
avoid inhaling any residual gas, even after the
instrument has been taken off the piping line for
maintenance and so forth.
• Do not apply excessive weight, for example, a
person stepping on the magnetic owmeter.
• All procedures relating to installation must
comply with the electrical code of the country
where it is used.
(2) Wiring
WARNING
• The wiring of the magnetic owmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to wiring.
• When connecting the wiring, check that
the supply voltage to the converter is within
the range of the voltage specied for this
instrument before connecting the power cable.
In addition, check that no voltage is applied to
the power cable before connecting the wiring.
• The protective grounding must be connected
securely at the terminal with the mark to
avoid danger to personnel.
(3) Operation
WARNING
• When opening the cover, wait for more than 10
minutes after turning off the power. Only expert
engineer or skilled personnel are permitted to
open the cover.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
• Be sure to set parameters as “Protect” on the
write protect function after nish of parameter
setting work.
Under extremely rare case, the infra-red
switches may respond unexpectedly in
such conditions as sticking ball of water or
extraneous substances on the surface of
display panel glass according to the principle of
infra-red switch operation.
Its probability rises in such cases as sticking
rain water by storm or other similar situation
and washing up work near owmeter
installation place.
Either to illuminate or stop illuminating the infra-
red switches by the ashlight may cause the
mis-reaction.
Refer to the manual for converter on how to
use the write protect function in detail.

<1. INTRODUCTION> 1-3
IM 01E25D11-01EN
(4) Maintenance
WARNING
• Maintenance of the magnetic owmeter should
be performed by the trained personnel having
knowledge of safety standard. No operator
shall be permitted to perform any operations
relating to maintenance.
• When opening the cover, wait for more than 10
minutes after turning off the power.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
• Always conform to maintenance procedures
outlined in this manual. If necessary, contact
Yokogawa.
• Care should be taken to prevent the build up
of dirt, dust or other substances on the display
panel glass or data plate. If these surfaces do
get dirty, wipe them clean with a soft dry cloth.
1.2 Warranty
• The terms of this instrument that are
guaranteed are described in the quotation.
We will make any repairs that may become
necessary during the guaranteed term free of
charge.
• Please contact our sales ofce if this instrument
requires repair.
• If the instrument is faulty, contact us with
concrete details about the problem and the
length of time it has been faulty, and state the
model and serial number. We would appreciate
the inclusion of drawings or additional
information.
• The results of our examination will determine
whether the meter will be repaired free of
charge or on an at-cost basis.
n The guarantee will not apply in the
following cases:
• Damage due to negligence or insufcient
maintenance on the part of the customer.
• Problems or damage resulting from handling,
operation or storage that violates the intended
use and specications.
• Problems that result from using or performing
maintenance on the instrument in a location
that does not comply with the installation
location specied by Yokogawa.
• Problems or damage resulting from repairs or
modications not performed by Yokogawa or
someone authorized by Yokogawa.
• Problems or damage resulting from
inappropriate reinstallation after delivery.
• Problems or damage resulting from disasters
such as res, earthquakes, storms, oods, or
lightning strikes and external causes.
n Trademarks:
ADMAG and AXW are registered trademarks of
Yokogawa Electric Corporation.
Company names and product names used
in this material are registered trademarks or
trademarks of their respective owners.
1.3 Combination Remote
Converters
IMPORTANT
• The AXW remote owtube (size 500 (20
in.) to 1800 mm (72 in.)) should be used in
combination with AXFA11 remote converter.
Contact Yokogawa before using it in
combination with converters other than
AXFA11.

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<2. HANDLING PRECAUTIONS> 2-1
IM 01E25D11-01EN
2. HANDLING PRECAUTIONS
This instrument has been inspected carefully at
the factory before shipment. When the instrument
is delivered, visually check that no damage has
occurred during transportation.
Read this section carefully as it contains important
information on handling this instrument. Refer to
the relevant sections for information not contained
in this section. If you have any problems or
questions, please contact Yokogawa sales ofce.
2.1 Checking Model and
Specications
The model code and specications are found on
the data plate located on the outside of the case.
Check that the model code and specications
match what you have ordered.
Be sure you have your model number and serial
number available when contacting Yokogawa.
F0201.ai
KCC-
REM-
YHQ-
EEN
165
Figure 2.1.1 Data Plate
2.2 Storage Precautions
If the instrument is to be stored for a long period of
time after delivery, observe the following points.
 The instrument should be stored in its original
packing condition in the storage location.
 Select a storage location that fulls the following
conditions:
• A place where it will not be exposed to rain or
water
• A place subject to minimal vibrations or
shocks
• Temperature and humidity levels should be
as follows:
Temperature: -10 to 70°C
Humidity: 5 to 80% RH (no condensation)
The preferred ambient temperature
and humidity levels are 25°C and
approximately 65% RH.
 If the magnetic owmeter is transferred to
the installation site and stored without being
installed, its performance may be impaired due
to the inltration of rainwater and so forth. Be
sure to install and wire the magnetic owmeter
as soon as possible after transferring it to the
installation location.
2.3 Installation Location
Precautions
Select the installation location with consideration
to the following items to ensure long-term stable
operation of the instrument.
n Ambient Temperature:
Avoid installing the instrument in locations
with constantly uctuating temperatures. If the
location is subject to radiant heat from the plant,
provide heat insulation or improve ventilation.
n Atmospheric Condition:
Avoid installing the instrument in a corrosive
atmosphere. In situations where this is
unavoidable, consider ways to improve
ventilation and to prevent rainwater from
entering and being retained in the conduit
pipes.
n Vibrations or Shocks:
Avoid installing the instrument in a place subject
to shocks or vibrations.

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<3. INSTALLATION> 3-1
IM 01E25D11-01EN
3. INSTALLATION
WARNING
Installation of the magnetic owmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to installation.
3.1 Piping Design Precautions
IMPORTANT
Design piping correctly, referring to the following
to prevent damage to owtubes and to assure
accurate measuring.
(1) Location
IMPORTANT
Install the owmeter in a location where it is
not exposed to direct sunlight. The minimum
ambient temperature is limited by the minimum
uid temperature of the owtube (the lining). For
more information, refer to Chapter 6 “OUTLINE”.
The owmeter may be used in an ambient
humidity where the relative humidity ranges from
0 to 100%. However, avoid long-term continuous
operation at relative humidity above 95%.
(2) Noise Avoidance
IMPORTANT
The owmeter should be installed away from
electrical motors, transformers, and other power
sources in order to avoid interference with
measurement.
(3) Required Lengths of Straight Runss
To maintain accurate measurement, see JIS B7554
“Electro Magnetic Flowmeters” which explains the
requirements for upstream piping conditions of
magnetic owmeters.
Based on JIS B7554 “Electro Magnetic Flowmeters”
and our piping condition test data, we recommend
the piping conditions as shown in the following
gures.
When installing two or more magnetic owmeters
on a single pipe, provide a run of at least 10D
between them.
F0301.ai
D: Flowtube Size
Gate valve
fully open
5D or more 2D or more
Reducer
pipe
Expander
pipe
0 is allowable. 0 is allowable. 10D or more
10D or more
Tee 90-degree bent Various valves
0 is allowable.5D or more 0 is allowable.5D or more 2D or more
2D
or more
Figure 3.1.1 Required Lengths of Straight Runs
*1: Do not install anything in the vicinity that may
interfere with the magnetic eld, induced signal
voltages, or ow velocity distributions of the
owmeter.
*2: A straight run may not be required on the
downstream side of the owmeter. However,
if a downstream valve or other tting causes
irregularity or deviation in ows, provide a
straight run of 2D to 3D on the downstream
side.
*3: The valves shall be mounted on the
downstream side so that deviated ows do not
occur in the owtube and to avoid startup from
an empty condition.
(4) Maintaining Stable Fluid Conductivity
IMPORTANT
Do not install the owmeter where uid
conductivity tends to become uneven. If
chemicals are fed near the upstream side of a
magnetic owmeter, they may affect the ow
rate’s indications. To avoid this situation, it is
recommended that the chemical feed ports be
located on the downstream side of the owmeter.
If it is unavoidable that chemicals must be fed on
the upstream side, provide a sufcient length of
straight run (approximately 50D) to ensure the
proper mixture of uids.
F0302.ai
(Incorrect)
Upstream side
(Correct)
Downstream side
Figure 3.1.2 Chemical Injection