YOKOGAWA DY015, DY025, DY040, DY050, DY080 User's Manual

User’s

Model DY

Manual

Vortex Flowmeter

(Integral T ype, Remote Type)

Model DYA
Vortex Flow Converter

(Remote T ype)

IM 1F6A0-01E

Yokogawa Electric Corporation

IM 1F6A0-01E

8th Edition

CONTENTS

CONTENTS

INTRODUCTION..............................................................................................................................................iv

1. HANDLING PRECAUTIONS................................................................................................................ 1-1

1.1 Model and Specifications...........................................................................................................................1-1

1.2 Precautions Regarding Transportation and Storage Location ...............................................................1-1

1.3 Precautions Regarding Installation Locations ........................................................................................1-1

2. INSTALLATION .................................................................................................................................... 2-1

2.1 Precautions Regarding Installation Locations ........................................................................................2-1

2.2 Piping...........................................................................................................................................................2-1

2.3 Precautions Regarding Installation ..........................................................................................................2-4

2.4 Piping to Improve Durability......................................................................................................................2-5

2.5 Cryogenic and High process Temperature Version Insulation ...............................................................2-5

2.6 Installing the Vortex Flow-meter................................................................................................................2-6

3. WIRING................................................................................................................................................. 3-1

3.1 Wiring Precautions .....................................................................................................................................3-1

3.2 Wiring for Output Condition ......................................................................................................................3-1

3.3 Connection ..................................................................................................................................................3-2

3.4 Wiring Cables and Wires ............................................................................................................................3-4

3.5 Connection of the Remote Type Signal Cable..........................................................................................3-4

3.6 Method of Finishing the Signal Cable End(DYC) .....................................................................................3-5

3.6.1 For Vortex Flowmeter (DY-N)........................................................................................................................... 3-5

3.6.2 For Vortex Flow Converter (DYA) .................................................................................................................... 3-6

3.7 Wiring Cautions ..........................................................................................................................................3-7

3.8 Grounding ...................................................................................................................................................3-7

4. BASIC OPERATING PROCEDURES .................................................................................................. 4-1

4.1 Construction of the Display.......................................................................................................................4-1

4.2 Display Contents in Display Section ........................................................................................................4-2

4.3 Display Contents in Display Section ........................................................................................................4-3

4.3.1 Change the Display Mode from % Display to Engineering Unit....................................................................... 4-4

4.3.2 Indicate the Total Rate in the Lower Display ..................................................................................................... 4-5

4.4 Setting Mode ...............................................................................................................................................4-6

4.4.1 Structure of Setting Mode Display.....................................................................................................................4-6

4.4.2 Method of Parameter Setting.............................................................................................................................. 4-7

4.5 Operation for the BT200.............................................................................................................................4-9

4.5.1 Connection Method for the BT200 ....................................................................................................................4-9

4.5.2 Displaying Flow Rate Data .............................................................................................................................. 4-10

4.5.3 Setting Parameters............................................................................................................................................4-11

4.6 Operation for HART Communicator........................................................................................................4-13

4.6.1 Interconnection between digitalYEWFLO and HART Communicator ........................................................... 4-13

4.6.2 Communication Line Requirements ................................................................................................................ 4-14

4.6.3 Keys and Functions of Model 275 ...................................................................................................................4-15

4.6.4 Display ............................................................................................................................................................. 4-16

4.6.5 Calling Up Menu Addresses............................................................................................................................. 4-17

4.6.6 Entering, Setting and Sending Data .................................................................................................................4-18

4.6.7 Parameters Configuration................................................................................................................................. 4-18

4.6.8 Unique Functions of HART Communicator .................................................................................................... 4-19

4.6.9 Data Renewing ................................................................................................................................................. 4-19

4.6.10 Checking for Problems.....................................................................................................................................4-19

4.6.11 Write Protect .................................................................................................................................................... 4-20

IM 1F6A0-01E
8th Edition : Nov. 2005(KP)
All Rights Reserved, Copyright © 2001. Yokogawa Electric Corporation

i

IM 1F6A0-01E

CONTENTS

4.6.12 Menu Tree ........................................................................................................................................................4-21

5. PARAMETERS ..................................................................................................................................... 5-1

5.1 Parameter Setup .........................................................................................................................................5-1

5.2 Multi-Variable Type Parameter (Only for /MV)...........................................................................................5-1

5.3 Parameters List...........................................................................................................................................5-1

5.4 Parameter Description ...............................................................................................................................5-9

5.5 Error Code Lists........................................................................................................................................5-17

6. OPERATION ......................................................................................................................................... 6-1

6.1 Adjustment ..................................................................................................................................................6-1

6.1.1 Zero Adjustment ................................................................................................................................................. 6-1

6.1.2 Span Adjustment ................................................................................................................................................ 6-1

6.1.3 Loop test............................................................................................................................................................. 6-1

6.1.4 Totalizer Function Start and Totalized Value Reset............................................................................................6-1

6.1.5 Unit of Pulse Output (Scaling) ........................................................................................................................... 6-2

6.1.6 Power Failure .....................................................................................................................................................6-2

6.2 Adjustment for Manual Mode ....................................................................................................................6-2

6.2.1 Low Cut Adjustment .......................................................................................................................................... 6-2

6.2.2 Tuning ................................................................................................................................................................6-2

6.3 Other Maintenance .....................................................................................................................................6-3

6.3.1 Cleaning Precautions.......................................................................................................................................... 6-3

7. MAINTENANCE ................................................................................................................................... 7-1

7.1 Changing the Terminal Box Orientation ...................................................................................................7-2

7.2 Indicator Removal and Rotation................................................................................................................7-3

7.3 Amplifier Unit Removal ..............................................................................................................................7-3

7.4 Amplifier Unit Assembling.........................................................................................................................7-3

7.5 Vortex Shedder Removal............................................................................................................................7-4

7.6 Setting Switches .........................................................................................................................................7-6

7.6.1 Setting of Burnout Switch .................................................................................................................................. 7-6

7.6.2 Setting of Write Protect Switch.......................................................................................................................... 7-6

7.7 Software Configuration ..............................................................................................................................7-7

8. TROUBLESHOOTING.......................................................................................................................... 8-1

8.1 Flow..............................................................................................................................................................8-1

8.2 Flow (Only for /MV) .....................................................................................................................................8-4

9. GENERAL DESCRIPTION................................................................................................................... 9-1

9.1 Outline .........................................................................................................................................................9-1

9.2 Standard Specifications.............................................................................................................................9-2

9.3 Model and Suffix Codes .............................................................................................................................9-5

9.4 Option Specifications.................................................................................................................................9-7

9.4.1 Option Specifications ......................................................................................................................................... 9-7

9.4.2 Option Multi-Variable (Build in Temperature Sensor) Type (/MV)(*1)............................................................ 9-9

9.4.3 Option Specifications (Hazardous Area Classifications) ................................................................................. 9-11

9.5 Sizing .........................................................................................................................................................9-14

9.6 External Dimensions ................................................................................................................................9-18

10. EXPLOSION PROTECTED TYPE INSTRUMENT ............................................................................. 10-1

10.1 CENELEC ATEX (KEMA) ..........................................................................................................................10-1

10.1.1 Technical Data.................................................................................................................................................. 10-1

10.1.2 Installation........................................................................................................................................................ 10-2

10.1.3 Operation.......................................................................................................................................................... 10-2

10.1.4 Maintenance and Repair...................................................................................................................................10-2

10.1.5 Installation Diagram of Intrinsically safe (and Note) ...................................................................................... 10-3

10.1.6 Installation Diagram of Type of Protection “n” ............................................................................................... 10-3

ii

IM 1F6A0-01E

CONTENTS

10.1.7 Data Plate .........................................................................................................................................................10-4

10.1.8 Screw Marking ................................................................................................................................................. 10-4

10.2 FM...............................................................................................................................................................10-5

10.2.1 Technical Data.................................................................................................................................................. 10-5

10.2.2 Wiring............................................................................................................................................................... 10-5

10.2.3 Operation.......................................................................................................................................................... 10-5

10.2.4 Maintenance and Repair...................................................................................................................................10-5

10.2.5 Installation Diagram ......................................................................................................................................... 10-6

10.2.6 Data Plate .........................................................................................................................................................10-7

10.3 SAA ............................................................................................................................................................10-7

10.3.1 Technical Data.................................................................................................................................................. 10-7

10.3.2 Installation........................................................................................................................................................ 10-8

10.3.3 Operation.......................................................................................................................................................... 10-8

10.3.4 Maintenance and Repair...................................................................................................................................10-8

10.3.5 Installation Diagram ......................................................................................................................................... 10-8

10.3.6 Data Plate .........................................................................................................................................................10-9

10.4 CSA ..........................................................................................................................................................10-10

10.4.1 Technical Data................................................................................................................................................ 10-10

10.4.2 Wiring............................................................................................................................................................. 10-11

10.4.3 Operation........................................................................................................................................................ 10-11

10.4.4 Maintenance and Repair.................................................................................................................................10-11

10.4.5 Installation Diagram Intrinsically Safe (and Note) ........................................................................................ 10-11

10.4.6 Data Plate .......................................................................................................................................................10-12

10.5 TIIS ...........................................................................................................................................................10-13

11. PRESSURE EQUIPMENT DIRECTIVE.............................................................................................. 11-1

INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT .................EX-1

REVISION RECORD

iii

IM 1F6A0-01E

INTRODUCTION

INTRODUCTION

The DY series of vortex flowmeters have been fine-tuned to
your order specifications prior to shipment. Before use, read
this manual thoroughly and familiarize yourself fully with the
features, operations and handling of digitalYEWFLO to have
the instrument deliver its full capabilities and to ensure its
efficient and correct use.

■ Notices Regarding This Manual

• This manual should be passed to the end user.

• The contents of this manual are subject to change without
prior notice.

•All rights reserved. No part of this document may be
reproduced or transmitted in any form or by any means
without the written permission of Yokogawa Electric
Corporation (hereinafter simply referred to as Yokogawa).

•This manual neither does warrant the marketability of this
instrument nor it does warrant that the instrument will suit
a particular purpose of the user.

• Every effort has been made to ensure accuracy in the
contents of this manual. However, should any questions
arise or errors come to your attention, please contact your
nearest Yokogawa sales office that appears on the back of
this manual or the sales representative from which you
purchased the product.

• This manual is not intended for models with custom
specifications.

• Revisions may not always be made in this manual in
conjunction with changes in specifications, constructions
and/or components if such changes are not deemed to
interfere with the instrument’s functionality or perfor­mance.

■ Notices Regarding Safety and Modification

• For the protection and safety of personnel, the instrument
and the system comprising the instrument, be sure to
follow the instructions on safety described in this manual
when handling the product. If you handle the instrument
in a manner contrary to these instructions, Yokogawa does
not guarantee safety.

• If this instrument is used in a manner not specified in this
manual, the protection provided by this instrument may be
impaired.

•As for explosionproof model, if you yourself repair or
modify the instrument and then fail to return it to its
original form, the explosion-protected construction of the
instrument will be impaired, creating a hazardous
condition. Be sure to consult Yokogawa for repairs and
modifications.

䊏 Safety and Modification 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 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 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.

Functional grounding terminal
Direct current

iv

IM 1F6A0-01E

Warranty

•The warranty of this instrument shall cover the period
noted on the quotation presented to the Purchaser at the
time of purchase. The Seller shall repair the instrument
free of charge when the failure occurred during the
warranty period.

• All inquiries on instrument failure should be directed to
the Seller’s sales representative from whom you purchased
the instrument or your nearest sales office of the Seller.

• Should the instrument fail, contact the Seller specifying
the model and instrument number of the product in
question. Be specific in describing details on the failure
and the process in which the failure occurred. It will be
helpful if schematic diagrams and/or records of data are
attached to the failed instrument.

• Whether or not the failed instrument should be repaired
free of charge shall be left solely to the discretion of the
Seller as a result of an inspection by the Seller.

■ The Purchaser shall not be entitled to

receive repair services from the Seller free
of charge, even during the warranty period,
if the malfunction or damage is due to:

•improper and/or inadequate maintenance of the instrument
in question by the Purchaser.

• handling, use or storage of the instrument in question
beyond the design and/or specifications requirements.

•use of the instrument in question in a location not
conforming to the conditions specified in the Seller's
General Specification or Instruction Manual.

•retrofitting and/or repair by an other party than the Seller
or a party to whom the Seller has entrusted repair
services.

•improper relocation of the instrument in question after
delivery.

• reason of force measure such as fires, earthquakes, storms/
floods, thunder/lightning, or other reasons not attributable
to the instrument in question.

INTRODUCTION

v

IM 1F6A0-01E

INTRODUCTION

■ Using the Vortex Flowmeter Safely

WARNING

(1) Installation

• Installation of the vortex flowmeter must be
performed by expert engineer or skilled person­nel. No operator shall be permitted to perform
procedures relating to installation.

• The vortex flowmeter is a heavy instrument.
Be careful that no damage is caused to per­sonnel through accidentally dropping it, or by
exerting excessive force on the vortex flowme­ter. When moving the vortex flowmeter, always
use a trolley and have at least two people carry
it.

•When the vortex flowmeter is processing hot
fluids, the instrument itself may become
extremely hot. Take sufficient care not to get
burnt.

•Where the fluid being processed is a toxic
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after the
instrument has been taken off the line for
maintenance and so forth.

•All procedures relating to installation must
comply with the electrical code of the country
where it is used.

(2) Wiring

• The wiring of the vortex flowmeter 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 is within the range of the
voltage specified 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 functional grounding must be connected
securely at the terminal with the

mark to

avoid danger to personnel.

(3) Operation

• Only expert engineer or skilled personnel are
permitted to open the cover.

(4) Maintenance

• Maintenance on the vortex flowmeter should be
performed by expert engineer or skilled person­nel. No operator shall be permitted to perform
any operations relating to maintenance.

•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.

(5) Explosion Protected Type Instrument

• For explosion proof type instrument, the de­scription in Chapter 10 “EXPLOSION PRO­TECTED TYPE INSTRUMENT” is prior to the
other description in this user's manual.

• Only trained persons use this instrument in the
industrial location.

• The functional grounding must be connected
to a suitable IS grounding system.

• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous locations.

(6) European Pressure Equipment Directive

(PED)

•When using the instrument as a PED-compliant
product, be sure to read Chapter 11 before
use.

vi

IM 1F6A0-01E

1. HANDLING PRECAUTIONS

1. HANDLING PRECAUTIONS

The Model DY Vortex Flowmeter and Model DYA Vortex
Flow Converter are thoroughly tested at the factory before
shipment. When these instruments are delivered, perform a
visual check to ascertain that no damage occurred during
shipment.

This section describes important cautions in handling these
instruments. Read carefully before using them.

If you have any problems or questions, contact your nearest
YOKOGAWA service center or sales representative.

1.1 Model and Specifications

The model and important specifications are indicated on the
data plate attached to the case. Verify that they are the same
as those specified in the original order, referring to paragraph

9.2 to 9.5. In any correspondence, always give model
(MODEL), serial number (NO) and calibrated range
(RANGE) from the data plate.

3
U

A

1.2 Precautions Regarding Transportation and Storage Location

To protect against accidental damage to digitalYEWFLO
while transporting it to a new location, pack it in the original

packing as when shipped from the Yokogawa factory.

WARNING

The Vortex Flowmeter is a heavy instrument. Please
be careful to prevent persons from injuring when it is
handled.

Deterioration in insulation or corrosion can occur for
unexpected reasons if digitalYEWFLO is left uninstalled for
a prolonged period after delivery. If digitalYEWFLO is
likely to be stored over a prolonged period, observe the
following precautions.

■ Store the vortex flowmeter with forwarded statement.

■ Choose a storage location that satisfies the following

requirements:

• Not exposed to rain or splashwater.

• Less susceptible to mechanical vibration or shock.

•Kept within the temperature and humidity ranges shown
in the following table, preferably at normal temperature
and humidity (approximately 25°C, 65%)

Temperature
Humidity

–40°C to +80°C
5 to 100% (no condensation)

T010201.EPS

MPa at 38°C

MPa at 38°C

TAG NO.

F010101.EPS

TAG NO.

TAG NO.

F010102.EPS

4 ~ 20mA DC / PULSE

*1)

10.5 ~ 42V DC

*1): K factor at 15°C
*2): The product - producing country.

Figure 1.1(a) Example of Data Plate for Integral Type

10.5 ~ 42V DC

Figure 1.1(b) Example of Data Plate for Remote Type

*2)

4 ~ 20mA DC / PULSE

1.3 Precautions Regarding In­stallation Locations

3UA

3WA

3YA

(1) Ambient Temperature

Avoid an area which has wide temperature variations.
When the installation area is subjected to heat radiation
from process plant, ensure adequate heat prevention or
ventilation.

(2) Atmospheric Conditions

Avoid installing the vortex flowmeter in a corrosive
atmosphere. When the vortex flowmeter must be
installed in a corrosive atmosphere, adequate ventilation
must be provided.

1-1

IM 1F6A0-01E

(3) Mechanical Shock or Vibration

The vortex flowmeter is of sturdy construction, but
select an area subject to minimize mechanical vibrations
or impact shock. If the flowmeter is subject to vibra­tions, it is recommended that pipeline supports to be
provided as shown in Figure 1.2.

(4) Other Considerations

• Choose a location where is sufficient clearance around
digitalYEWFLO exist to allow such work as routine
inspections.

• Choose a location that ensures easy wiring and piping.

digitalYEWFLO
Vortex Flowmeter

Pipeline

1. HANDLING PRECAUTIONS

Pipeline Support

Figure 1.2

F010301.EPS

1-2

IM 1F6A0-01E

2. INSTALLATION

2. INSTALLATION

This instrument must be installed by expert engineer
or skilled personnel. The procedures described in this
chapter are not permitted for operators.

WARNING

2.1 Precautions Regarding In­stallation Locations

(1) Ambient Temperature

Avoid an area which has wide temperature variations.
When the installation area is subjected to heat radiation
from process plant, ensure adequate heat prevention or
ventilation.

(2) Atmospheric Conditions

Avoid installing the vortex flowmeter in a corrosive
atmosphere. When the vortex flowmeter must be
installed in a corrosive atmosphere, adequate ventilation
must be provided

(3) Mechanical Shock or Vibration

The vortex flowmeter is of sturdy construction, but
select an area subject to minimize mechanical vibration
or impact shock. If the flowmeter is subject to vibra­tions, it is recommended that pipeline supports to be
provided as shown in Figure 2.1.

(4) Precautions Regarding Piping

(a) Ensure that the process connector bolts are tightened

firmly.

(b) Ensure that no leak exists in the process connection

pipeline.

(c) Do not apply a pressure higher than the specified

maximum working pressure.

(d) Do not loosen or tighten the flange mounting bolts when

the assembly is pressurized.

(e) Handle the vortex flowmeter carefully when measuring

dangerous liquids, so that the liquids do not splash into
eyes or on face. When using dangerous gases, be careful
not to inhale them.

2.2 Piping

See Table 2.1 about Valve Position and Straight Pipe Length
and so on.

Pipeline Support

Figure 2.1

digitalYEWFLO
Vortex Flowmeter

Pipeline

F020101.EPS

2-1

IM 1F6A0-01E

Table 2.1 Installation

2. INSTALLATION

Description

Piping support:

Typical vibration immunity level is 1G for normal piping condition.
Piping support shoud be fixed in case of over 1G vibration level.

Installation direction:

If a pipe is always filled with liquids, the pipe can be installed
vertically or at inclined angle.

Adjacent pipes:

The process pipline inner diameter should be larger than
the digitalYEWFLO inner diameter.
Use the following adjacent pipe.
Norminal size 15mm up to 50mm : Sch 40 or less.
Norminal size 80mm up to 300mm : Sch 80 or less.

Reducer pipe:

Ensure the upstream straight pipe length to be 5D or more, and the
downstream straight pipe length to be 5D or more for per reducer
pipe.
(D: digitalYEWFLO nominal diameter)

Expander pipe:

Ensure the upstream straight pipe length to be 10D or more, and
the downstream straight pipe length to be 5D or more for per
expander pipe.

Bent pipe and straight pipe length:

Ensure the upstream straight pipe length to be 10D or more, and
the downstream straight pipe length to be 5D or more for per bent
pipe.

Valve position and straight pipe length:

■ Install the valve on the downstream side of the flowmeter.
The upstream straight pipe length dependent on the element
located on the upstream such as reducer/expander, bent and
etc., refer to description as above. Keep 5D or more for
downstream straight pipe length.

■ In case the valve has to be installed on the upstream of the
flowmeter, ensure the upstream straight pipe length to be 20D
or more, and the downstream straight pipe length be 5D or more.

Fluid vibration:

For a gas line which uses a position-type or roots-type blower
compressor or a high-pressure liquid line (about 1MPa or more)
which uses piston-type or plunger-type pump, fluid vibrations may
be produced.
In this case, install valve on the upstream side of digitalYEWFLO.
For inevitable fluid vibration, put a vibration damping device such as
throttling plate or expansion section in the upstream side of
digitalYEWFLO.

Reducer

Expander

Refer to each element above for
straight pipe run.

Flow

Figure

digitalYEWFLO

Flow

5D or more

digitalYEWFLO

Flow

10D or more

Flow

10DxN or more

N: Number of bent pipe

digitalYEWFLO

Valve

20D or more

5D or more

5D or more

digitalYEWFLO

5D or more

digitalYEWFLO

5D or more

digitalYEWFLO

digitalYEWFLO

Piston-type or plunger pump:

Install the accumulator on the upstream side of digitalYEWFLO to
reduce fluid vibrations.

2-2

digitalYEWFLO

F020102-1.EPS

IM 1F6A0-01E

2. INSTALLATION

Description

Valve positon (T-type piping exist):

When pulsation causes by a T-type piping exist, install the valve
on the upstream of the flowmeter.
Example:As shown in the figure, when the valve V1 is turned
off, the fluid flow throught B as to meter A the flow is zero. But
due to the pulsating pressure is detected, the meter is zero
point become fluctuating. To avoid this, change the valve V1
location to V1'.

Pressure and Temperature T aps:

Pressure tap outlet: install this tap between 2D and 7D on the
downstream side of a flowmeter.
Temperature tap outlet: install this on the downstream side 1D
to 2D away from a pressure tap.

Mounting Gasket:

Avoid mounting gaskets which protrude into the pipe line. This
may cause inaccurate readings.
Use the gaskets with bolt holes, even if digitalYEWFLO is the
wafer type.
When using a spiral gasket(without bolt holes), confirm the size
with the gasket -manufacturer, as standard items may not be
used for certain flange ratings.

Flow

Flow

B

Relocating

Upstream

Figure

digitalYEWFLO

V1’ V1

A

Pressure tap

digitalYEWFLO

2 to 7D 1 to 2D

digitalYEWFLO

Valve (Off)

Temperature tap

Pipeline Flange

Pipeline

downstream

Heat-Insulation:

When an integral-type flowmeter or a remote type detector is
installed and the pipe carrying higt-temperature fluids is
heat-insulated, do not wrap adiabatic materials around the
installation bracket of the converter.

Flushing of the pipe line:

Flush and clean scale, incrustation and sludge on the inside of
pipe for newly installed pipe line and repaired pipe line before
the operation. For flushing, the flow should flow through
bypass-piping to avoid damaging the flowmeter. If there is no
bypass-piping, install short pipe instead of the flowmeter.

No good

digitalYEWFLO

Bracket

Heat-Insulator

digitalYEWFLO

Short pipe

2-3

F020102-2.EPS

IM 1F6A0-01E

2. INSTALLATION

2.3 Precautions Regarding In­stallation

WARNING

In case of high process temperature, care should be
taken not to burn yourself because the surface of
body and case reach a high temperature.

(1) Gas or Steam Measuring Precautions

•Piping to Prevent Standing Liquid

Mount digitalYEWFLO in a vertical pipeline to avoid
liquid traps. When digitalYEWFLO is installed horizon­tally, raise that part of the pipeline in which the
digitalYEWFLO is installed.

(Good)

(Good)

Flow

Flow

•Piping for Avoiding Bubbles

Flows containing both gas and liquid cause problems.
Avoid gas bubbles in a liquid flow. Piping should be
carried out to avoid bubble generation.
Install the valve on the downstream side of the flowme­ter because pressure drop across the control valve may
cause gas to come out of the solution.

(Good)

Control

Value

Flow

(Good)

Flow

Flow

(No Good)

(No Good)

Flow

Figure 2.2

(2) Liquid Measurement Precautions

To insure accurate measurement, the digitalYEWFLO
must always have a full pipe.

• Piping Requirements for Proper Operation

Allow the flow to flow against gravity. When the flow is
moving with gravity, lift the down-stream pipe length
above the digitalYEWFLO installation level to maintain
full pipeline.

Flow

(No Good) (No Good)

Flow

(Good)

h h>0

Flow

(Good)

Flow

F020301.EPS

h
h>0

F020303.EPS

Figure 2.4

(3) Multi-Phase Flow

digitalYEWFLO can measure gas, liquid and steam
when there is no change in state. However, accurate
measurement of mixed flows (e.g. gas and liquid) is not
possible.

(No Good)

Mist flow

(No Good)

Liquid
Flow

Stratified flow

(No Good)

Gas Flow

Figure 2.3

F020302.EPS

2-4

Figure 2.5

Bubble flow

F020304.EPS

IM 1F6A0-01E

2. INSTALLATION

(4) Pipeline Diameter and digitalYEWFLO

The process pipeline inner diameter should be slightly
larger than the vortex flowmeter inner diameter,
schedule 40 or lower pipe should be used for 1/2 to 2
inch flowmeters and schedule 80 or lower pipes for 3 to
8 inch flowmeters.

(No Good) (Good)

Figure 2.6

D

D

1

2

<

D

D

1

2

D1D

D

2



D

1

2

F020305.EPS

(5) Waterproof Construction

The vortex flowmeter is of IP67, NEMA4X
tightprotection. However, it cannot be used under water.

2.4 Piping to Improve Durability

(1) Pipe cleaning

• Flushing of pipe line (Cleaning)
Flush and clean scale, incrustation and sludge on the
inside of pipe wall for newly installed pipe line and
repaired pipe line before the operation.

• Fluid Carrying Solids
Do not measure fluids that carry solids (e.g. sand and
pebbles). Make sure users periodically remove solids
adhering to the vortex shedder.

• Obstruction of flow fluids may cause to make a chemical
reaction and the fluid will be crystallized and hardened,
and be deposited on the pipe wall and shedder bar.
In those cases, clean shedder bar.

(2) Bypass piping

Installing a bypass, as illustrated in the figure below,
permits the digitalYEWFLO to be checked or cleaned
conveniently (vortex shedder, etc.).

Bypass shut-off valve

(1) Installing Cryogenic Vortex Flowmeter

For cryogenic applications, use stainless steel mounting
bolts and nuts to install the flowmeter. These can be
ordered separately from YOKOGAWA. Cover the
flowmeter body with heat insulating material so that the
flowmeter can be maintained at ultra-low temperatures
(refer to the Figure 2.8).

(2) Maintenance for Cryogenic Applications

DY/LT uses special materials that produce vortex
flowmeter for cryogenic applications. When you are
replacing a shedder bar, specify cryogenic type shedder
bar. To avoid condensing in the terminal box, ensure that
the wire connecting port is well sealed.

Bracket

Cold insulating material

Figure 2.8

F020501.EPS

(3) Installing High Process Temperature

Vortex Flowmeter

Installation of the flowmeter is the same as the standard
type. Cover the flowmeter body with heat insulating
material following instruction of “CAUTION”.

CAUTION

Keep the upper limit of heat insulating material to
prevent overheating of the terminal box.
Seal the heat insulating material to avoid hot-air
leakage.

50mm min. 50mm min.

UPPER LIMIT OF

HEAT INSULATING

MATERIAL

UPPER LIMIT OF

HEAT INSULATING

MATERIAL

digitalYEWFLO

Flow

Upstream shut-off valve Downstream shut-off valve

F020401.EPS

Figure 2.7

2.5 Cryogenic and High process
Temperature Version Insula­tion

When you are using cryogenic type and high process
temperature version of digitalYEWFLO Vortex Flowmeter
(Option code/HT /LT), refer to illustrated insulation method
as shown in Figure 2.8

Nominal Size: 100mm or under

Nominal Size: 150mm or over

(4) Maintenance for High Process Tempera-

ture Applications

DY/HT uses special materials that produce vortex
flowmeter for High Process Temperature applications
When you are replacing a shedder bar or a gasket,
specify High Process Temperature type.

2-5

F020501a.EPS

IM 1F6A0-01E

2. INSTALLATION

2.6 Installing the Vortex Flow­meter

WARNING

The Vortex Flowmeter is a heavy instrument. Please
be careful to prevent persons from injuring whin it is
handled.

Before installing the instrument verify the following. The
direction of flow should match to the arrow mark on the
instrument body. When changing the orientation of the
terminal box, refer to "7.1."

Installation of Vortex flowmeter of the wafer and flange type
is shown in Table 2.3.

When installing the wafer type vortex flowmeter, it is
important to align the instrument bore with the inner diameter
of the adjacent piping.

To establish alignment, use the four collars supplied with the
instrument.

1. Four collars are supplied for 1/2 inch (15mm) to 1- 1/

2inch (40mm), 2 inch of JIS 10K or ANSI class 150 or
JPI class 150, and 3 inch of ANSI class 150 or JPI class

150. Install the instrument as illustrated in Table 2.2.

2. If the adjacent flanges have eight bolt holes, insert the

stud bolts in the holes on the instrument shoulder. Refer to
Figure 2.9.
Stainless steel stud bolts and nuts are available on order.
When they are to be supplied by the user, refer to Table

2.2 for stud bolt length. Gaskets must be supplied by the
user.

3. Gasket:

Avoid mounting gaskets which protrude into the pipeline.
This may cause inaccurate readings.
Use gaskets with bolt holes, even if digitalYEWFLO is of
the wafer type. Refer to Figure 2.10.
When using a spiral gasket (without bolt holes), confirm
the size with the gasket-manufacturer, as standard items
may not be used for certain flange ratings.

Table 2.2

Size

mm

(inch)

15mm
(1/2B)

25mm

(1B)

40mm

(1-1/2B)

50mm

(2B)

80mm

(3B)

100mm

(4B)

d

Figure 2.9

Flange Rating

JIS 10K, 20K/DIN 10,
16,25,40
JIS 40K
ANSI 150, 300, 600

JIS 10K, 20K, 40K
ANSI 150
ANSI 300, 600
DIN 10, 16, 25, 40

JIS 10K, 20K/DIN 10,
16, 25, 40
JIS 40K
ANSI 150
ANSI 300, 600

JIS 10K, 20K, 40K/
DIN 10, 16, 25, 40
ANSI 150, 300, 600

JIS 10K/DIN 10, 16,
25, 40
JIS 20K, 40K
ANSI 150
ANSI 300, 600

JIS 10K/DIN 10, 16
JIS 20K/DIN 25, 40
JIS 40K
ANSI 150
ANSI 300
ANSI 600

Length

Major Diameter of

External Threed of

Stud Bolt d (mm)

12
16

12.7
16

12.7

15.9
12

16
20

12.7

19.1

16

15.9

16
20

15.9

19.1
16

20
22

15.9

19.1

22.2

R

Collar

Pipeline Flange

Pipeline

Length

R(mm)

160
160
155

160
155
160
160

160
170
155
170

200

220
240

220
240
270
240
240
270

T020601.EPS

Stud Bolt

F020601.EPS

2-6

F020602.EPS

Figure 2.10

IM 1F6A0-01E

Table 2.3(a) Installation of Wafer Type Vortex Flowmeter

2. INSTALLATION

Wafer type

When Installation Collar are required, the
installation vortex flowmeters applied to the
following line sizes and flange ratings.

Size mm(inch)

15 to 40

(1/2 to 1-1/2)

50(2)

80(3)

Flange Rating

All ratings

JIS 10K, ANSI class 150,
DIN PN10 to PN40

ANSI class 150, JPI class 150

WARNING

The inside diameter of the gasket must
be larger than the pipe inner diameter
so that it will not disturb the flow in the
pipeline.

WARNING

When installing the Flowmeter vertically in the
open air, change the electrical connection port
direction to the ground. If the electrical
connection port is installed upwards, rain
water might leak in.

Description

Horizontal Installation

Flow
Direction

Nut

Gasket

(1) Insert four collar on each of the four bolts and check

that all four collars contact the outside diameter of
the flowmeter body.

(2) Tighten the four bolts uniformly. Check for leakage

from the flange connections.

Flange

Collar

Electrical Connection

Flange

Gasket

Vertical Installation

(1) Insert two each collars on

each of the lower two bolts.

(2) Place the flowmeter body

on the lower two bolts.

(3) Tighten the four bolts

(including upper two bolts)
and nuts uniformly.

(4) Check for leakage from

the flange connections.

Electrical
connection

Nut

Gasket

Gasket
Collar
Stud Bolt

(4 pcs.)

Nut

Stud Bolt (4 pcs.)

Nut

When Installation Collars are not required,the
installation vortex flowmeters applied to the
following line sizes and flanges.

Size mm(inch) Flange Rating

50(2)

80(3)

100(4)

JIS 20K, 40K
ANSI class 300,600
JPI class 300,600

JIS 10K, 20K, 40K
ANSI class 300, 600
JPI class 300,600

JIS 10K, 20, 40K
ANSI class 150, 300, 600
JPI class 150,300,600

Flow Direction

Flow
Direction

Nut

Stud Bolt (8 pcs.)

Flange

Gasket

Electrical Connection

Gasket

(1) Insert two stud bolts in the bolt holes

on the flowmeter shoulder to align
the instrument body with the inner
diameter of the adjacent piping.

(2) Tighten all bolts uniformly and check

that there is no leakage between the
instrument and the flanges.

Bolt Hole

Nut

Flange

Vertical InstallationHorizontal Installation

Electrical
Connection

Flow Direction

T020602.EPS

2-7

IM 1F6A0-01E

Table 2.3(b) Installation of Flange Type Vortex Flowmeter

Flange type Description

2. INSTALLATION

Use the stud bolts and nuts supplied with the
flowmeter of the user.
The gaskets should be supplied by the user.

CAUTION

The inside diameter of the gasket must be
larger than the pipe inner diameter so that it
will not disturb the flow in the pipeline.

Table 2.3(c) Installation of remote Type Converter

Remote type converter Description

CAUTION

A signal cable (DYC) is used between the
remote type flowmeter and the converter.
The maximum signal cable length is 97.5ft
(30m).

The converter is mounted on a 2-inch (60.5mm outer dia.) stanchion or horizontal
pipe.
Do not mount the converter on a vertical pipe. It makes wiring and maintenance
difficult.
The converter mounting orientation can be changed as illustrated below.

Flow Direction

Vertical Installation

Flow Direction

Nut

Stud Bolt

Horizontal Installation

Flange

Flange

Gasket

Nut

Gasket

T020603.EPS

Horizontal Pipe MountingStanchion Mounting

2-8

Nut

Bracket

2-inch Pipe

U-Bolt

T020604.EPS

IM 1F6A0-01E

3. WIRING

3. WIRING

WARNING

The wiring of the vortex flowmeter must be performed
by expert engineer or skilled personnel. No operator
shall be permitted to perform procedures relating to
wiring.

CAUTION

Once all wiring is complete, check the connections
before applying power to the instrument. Improper
arrangements or wiring may cause a unit malfunction
or damage.

3.1 Wiring Precautions

Be sure to observe the following precautions when wiring:

CAUTION

• In cases where the ambient temperature
exceeds 50°C (122°F), use external heat­resistant wiring with a maximum allowable
temperature of 70°C (158°F) or above.

• Do not connect cables outdoors in wet weather
in order to prevent damage from condensation
and to protect the insulation.

• Do not splice the cable between the flowtube
terminal and the converter if it is too short.
Replace the short cable with a cable that is the
appropriate length.

• All the cable ends must be provided with round
crimp-on terminals and be securely wired.

• Be sure to turn power off before opening the
cover.

• Before turning the power on, tighten the cover
securely.

• Explosion protected types must be wired in
accordance with specific requirement (and, in
certain countries, legal regulations) in order to
preserve the effectiveness of their explosion
protected features.

• The terminal box cover is locked by the clamp.
In case of opening the terminal box cover, use
the hexagonal wrench attached.

• Be sure to lock the cover by the clamp using
the hexagonal wrench attached after installing
the cover.

3.2 Wiring for Output Condition

Table 3.1 shows the connection method of several output
conditions.

(1) Analog Output (4 to 20 mA DC)

This converter uses the same two wires for both, the
signal and power supply. A DC power supply is required
in a transmission loop. The total leadwire resistance
including the instrument load and power distributor
(supplied by the user) must conform to a value in the
permissible load resistance range. Refer to Figure 3.1
shows.

600

E–10.5

R=

0.0236

250

Load resistance R (Ω)

10.5 16.4 24.7
Power Supply Voltage E (V)

Figure 3.1 Relationship between Power Supply Voltage

and Load Resistance (4 to 20 mA DC Output)

(2) Pulse output and Alarm, Status Output

This version uses three wires between the converter and
the power supply. A DC power and load resistance are
required, and pulse output is connected to a totalizer or
an electric counter. Low level of the pulse output is 0
to 2V. No communication is possible over a transmis­sion line. Communication via the amplifier board is
always possible irrespective of the wiring condition.

(3) Simultaneous Analog-Pulse Output

When using digitalYEWFLO in the simultaneous analog

-pulse output mode, the communicable distance of the
transmission line is restricted on the wiring method.
Table 3.1 shows the examples of connection for this
output mode. Communication via the amplifier board is
always possible irrespective of the wiring condition.

Communication

Applicable range

BRAIN and HART

30 42

F030201.EPS

3-1

IM 1F6A0-01E

IMPORTANT

For pulse output and the simultaneous analog-pulse
output ,use the load resistance. Refer to Table 3.1.

3.3 Connection

Table 3.1 shows the connection sample of connection for
power supply and load resistance. The terminal position of
each connection is shown in Figure 3.2.

3. WIRING

Integral type

Input Terminal from built-

T

in temperature sensor
Input Terminals from

A

vortex detector

B

Common Terminal

C

Figure 3.2

Remote type

Supply

4 to 20 mA DC Output Power Supply



and Output Signal Terminals

–

Pulse

Pulse Output Terminal



F030301.EPS

3-2

IM 1F6A0-01E

Table 3.1 The connection example for simultaneous analog and pulse and alarm, status output.

3. WIRING

Connection

Analog Output

In this case,
Communication is
possible (up to a distance
of 2km when a CEV cable
is used.)

Pulse Output

In this case,
No communication is
possible.

Status Output

Alarm Output

In this case,
No communication is
possible.

digitalYEWFLO Electrical Terminal

+

SUPPLY

–

+

PULSE

digitalYEWFLO Electrical Terminal

SUPPLY

+

Shielded Cable

–

+

PULSE

digitalYEWFLO Electrical Terminal

Shielded Cable

+

SUPPLY

–

PULSE

+

Description

Distributor

+

–

*2

External Power supply
30V DC, 120mA max
(Contact Rating)

R

24V DC

250Ω

Electric counter

Use the Three-wire shielded cable.

E

*1

Use the Three-wire shielded cable.

E

Relay

AC power supply

Mognetic

valve

Simultaneous

Analog

-Pulse Output

Example 1

In this case, Communica

-tion is possible(up to a
distance of 2km when a
CEV cable is used).

Example 2

In this case, Communica

-tion is possible (up to a
distance of 200m when a
CEV cable is used) and R

Ω

).

= 1k

Example 3

In this case, No communi

-cation is possible (when
shielded cable is not used).

The range of load
resistance R for
the pulse output.

*1 : To avoid the influence of external noise, use an electric counter which fits to the pulse frequency.
*2 : Resistor is not necessary in case of an electric counter which can receive contact pulse signal directly.

When analog and pulse output are used, the length of communication line is subjected to wiring conditions. Refer to
example 1 to 3. If the communication carries out from amplifier, no need to consider wiring conditions.

Distributor (or communication medium : ex. EP card)

Shielded Cable

+

SUPPLY

–

PULSE

+

digitalYEWFLO Electrical Terminal

Shielded Cable

+

SUPPLY

–

PULSE

+

digitalYEWFLO Electrical Terminal

+

SUPPLY

*2

R

250

250

E(10.5 to 30V DC)
Counting input

Common

Electric counter

Ω

*2

R

250

Ω

–

PULSE

+

digitalYEWFLO Electrical Terminal

The load resistance of pulse output should be used to 1k

24V DC

Ω

*2

R

For the shielded cables in this example of
flowmeter installation, use two-wire separately
shielded cables.

This supply voltage requires a power sourse
with a maximum output current of no less than
E/R.

(or communication medium : ex. EP card)

*1

Recorder or
other instrument

E(16.4 to 30V DC)

Counting input
Common

Electric counter

Recorder or
other instrument

E(16.4 to 30V DC)

Counting input
Common

Electric counter

Ω

, 2W.
If no translation of the pulse output possible by the cable length or the frequency of the pluse output,
the load resistance should be selected by calculation as shown below.

E (V)

120

P (mW) =

⬉ R (k

E

R (k

Ω

) ⬉

2

(V)

Ω

)

µ

F ) × f ( kHz )

C (

0.1

Where
E= Supply voltage (V)
f = Frequency of pulse output (kHz)
R = Value of load resistance (k

Example of CEV cable capacitance

ⱌ 0.1µF/km

Ω

3-3

For the shielded cables in this
example of flowmeter installation,
use two-wire separately shielded
cables.
This supply voltage requires a power
sourse with a maximum output current
of no less than E/R+25mA.
The supply voltage requires output
impedance no more than 1/1000 of R

*1

(load resistance).

This supply voltage requires
a power sourse with a
maximum output current of
no less than E/R+25mA.

*1

C= Cable capacitance (µF)
P= Power ratio of the load resistance
(mW)

)

T030301.EPS

IM 1F6A0-01E

3. WIRING

3.4 Wiring Cables and Wires

The following should be taken into consideration when
selecting cables for use between the converter and distributor.

(1) Use 600V PVC insulated wire or equivalent standard

wire or cable.

(2) Use shielded wire in areas susceptible to electrical noise

(both analog and pulse output versions).

(3) In areas with high or low ambient temperatures, use

wires or cables suitable for such temperatures.

(4) In atmospheres where oils or solvents, corrosive gases or

liquids may be present, use suitable wires or cables.

(5) Use cable which withstand temperature up to 60°C and

more, when ambient temperature is more than 60°C.

IMPORTANT

For the remote type, use DYC signal cable to connect
the converter and remote type flowmeter(DY-N).

3.5 Connection of the Remote Type Signal Cable

The remote type signal cable is shown in Figure 3.3 and 3.4,
and the terminal is shown in Figure 3.5.

The maximum cable length is 30 m (97.5 feet).
Remove terminal box cover and wiring connection dust-cap

before wiring.
For remote type the converter has two electrical connections

(cable inlets). Use the left connection as viewed from the
terminal box for the DYC signal cable and the right connec­tion for the transmission cable.

If a signal cable kit is supplied by YOKOGAWA, both ends
of the cable must be finished in accordance with the
following instructions as shown in 3.6.1 and 3.6.2.

(Black) (White) (Red) (Red) (White) (Black)

80

(Yellow) (Yellow)

70

60

50

20

Specified

Flowmeter

DYC

Length (L)

30m (max.)

70

60

50

Unit : mm

80

25

95

(Blue)

Converter

F030501.EPS

Figure 3.3 DYC Signal Cable

Outer shield

To Flowmeter

T
A
B

C

T: Only for / MV

Inner shield

To Converter

T
A
B
C

F030502.EPS

Figure 3.4 Construction of Remote Type Signal Cable

TT

A
B

C

Flowmeter(DY-N)

Input Terminal from built-

T

in temperature sensor
Input Terminals from

A

vortex detector

B

Common Terminal

C

T: Only for /MV

A
B

C

Converter(DYA)

Supply

4 to 20 mA DC Output Power Supply



and Output Signal Terminals

–

Pulse

Pulse Output Terminal



F030503.EPS

Figure 3.5 Terminal of Detector and Converter

CAUTION

After completing the signal cable connections, install
the shielded cover to signal cable terminal as shown
in Figure 3.6.

Signal Cable(DYC)

Shield Cover

Figure 3.6 Shielded Cover

3-4

Vortex Flow Converter

Power Vable

F030504.EPS

IM 1F6A0-01E

3.6 Method of Finishing the Signal Cable End(DYC)

3.6.1 For Vortex Flowmeter (DY-N)

Description Figure

1

Strip off the outer polyethylene jacket, outer braided
shield and inner jacket, and inner braided shield as
per the dimensions below.

2

Strip off the black conductive layer convering two
wires completely, as per the dimensions below.
Twist each of the conductor and drain wires so that
there are no free strands.

3

Do not short-circuit the conductive layer and the
terminals (A, B, C and T).

4

Strip off about 5 mm (0.2 in.) of insulation for each
of wires A, B, and T, and twist the strands of each
wire. Twist the inner and outer drain wires together.

5

Slide FEP (fluorinated ethylene propylene) tubing
over the twisted inner and outer drain wires C until
the tubing cannot be slid any further, and then cut
off the tubing leaving 5 mm (0.2 in.) of the stranded
drain wires exposed.

6

Slide heat shrinkable tubing over the cable end so
that the tubing covers the braided shield and
overlaps both the polyethylene jacket and loose
wires A, B, C, and T.

7

Slide a short piece of heat shrinkable tubing over
each of wires A, B, C, and T. Install a crimp-on
terminal lug at the tip of each wire. Crimp and
solder each lug.

8

Slide each short piece of heat shrinkable tubing
over the crimp sleeve. Heat all pieces of heat
shrinkable tubing with a heat blower or dryer.

9

Attach an identification label to the end of the cable.

T (Yellow)

B (White)

5 (0.2)

Lug tip

A (Red)

C

5 (0.2)

5 (0.2)

90 (3.5)

Black Conductive Layer

T (yellow)

40 (1.6)

3 (0.1)
or less

50 (2.0)
60 (2.4)

B (White)

Drain wires
C
A (Red)

5 (0.2)

C

10

T (Yellow)

5 (0.2)

5 (0.2)

Crimp and Solder Here

Heat Shrinkable Tubing

Heat Shrinkable Tubing

10 (0.4)

5 (0.2)

Black Conductive Layer

FEP Insulation Tubing
(Black)

T (Yellow)

A (Red)
B (White)

Heat Shrinkable Tubing

T (Yellow)

A (Red)
B (White)

3. WIRING

Unit : mm

(approx. inches)

(*1): Only for /MV

NOTE

Check that the insulation resis­tance between each wire includ­ing the inner shield is 10MΩ or
greater at 500V DC. Ensure that
both ends of the wires are
disconnected (open-circuited)
during the check.

80

BLACK

WHITE

(A)RED

Yellow(T) 50

Figure 3.7

(C)

(B)

3MAX

1055

120

Unit : mm

NOTE

In case that the cable end finish parts
assembly is necessary after delivery,
contact your nearest Yokogawa sales

60
70

F030601.EPS

office or the sales representative from
which you purchased the product. The
parts number of DYC cable end finish
parts assembly:
Standard type: F9399AB

T030601.EPS

Multivariable type (/MV): F9399AD

CAUTION

Do not touch the '' conductive layer" (black area covering the signal cables A and B) to the converter case, terminal,
and other leadwires. If it is touched, operation of the converter may be incorrect. When the cable is terminated,
remove the conductive layer properly.

3-5

IM 1F6A0-01E

3.6.2 For Vortex Flow Converter (DYA)

Description Figure

1

Strip off the outer polyethylene jacket, outer braided
shield and inner jacket, and inner braided shield as
per the dimensions as shown.

2

Cut of the black conductive layers(convering the
two wires) completely, as per the dimensions below.
Twist each of the conductor and drain wires so that
there are no free strands.

3

Do not short-circuit the conductive layer and the
terminals (A, B, C, G and T).

4

Strip off about 5 mm (0.2 in.) of insulation for each
of wires A, B, and T, and twist the strands of each
wire.

Slide black FEP (fluorinated ethylene propylene)

5

tubing over the inner shield drain wire C and blue
FEP tubing over outer shield drain wire G until
the tubing cannot be slid any further, and then cut
off the tubing leaving 5 mm (0.2 in.) of the drain
wires exposed.

6

Slide heat shrinkable tubing over the cable end so
that the tubing covers the braided shield and
overlaps both the polyethylene jacket and loose
wires A, B, C, G, and T.

7

Slide a short piece of heat shrinkable tubing over
each of wires A, B, C, G, and T. Install a crimp-on
terminal lug at the tip of each wire. Crimp and
solder each lug.

8

Slide each short piece of heat
shrinkable tubing over the crimp sleeve. Heat all
pieces of heat shrinkable tubing with a heat blower
or dryer.

9

Attach an identification label to the end of the cable.

Black Conductive
Layer

B (White)

A (Red)

T (Yellow

Lug-Tips

95

(3.7)

(*1)

)

5 (0.2)

5 (0.2)

G
C

5 (0.2)

5 (0.2)

FEP Insulation Tubing (Black)

G
C

5 (0.2)

G
C

T

A

B

Crimp and Solder

10

(0.4)

Heat Shrinkable Tubing

15 (0.6) 10 (0.4)

5 (0.2)

T (yellow)

3 (0.1) or less

40 (1.6)

50 (2.0)

60 (2.4)

Drain wires

5 (0.2)

T (Yellow)

A (Red)
B (White)

FEP Insulation Tubing (Blue)

T (Yellow)

A (Red)

B (White)

25 (1.0)15 (0.6)

Heat Shrinkable Tubing

Heat-shrinkable tubing

3. WIRING

Unit : mm

(approx. inches)

Black
Conductive Layer

(*1): Only for /MV

NOTE

Check that the insulation
resistance between each wire
including the inner shield is
10MΩ or greater at 500V DC.
Ensure that both ends of the
wires are disconnected (open­circuited) during the check.

BLACK (C)

YELOW(T) 50

60

70

80

Figure 3.8

95

(G)BLUE

Unit : mm

NOTE

In case that the cable end finish parts

(B)WHITE

3

(A)RED

MAX

assembly is necessary after delivery,
contact your nearest Yokogawa sales
office or the sales representative from
which you purchased the product.
The parts number of DYC cable end
finish parts assembly:
Standard type: F9399AA

5

10 10

120

F030602.EPS

Multivariable type (/MV): F9399AC

T030602.EPS

CAUTION

Do not touch the '' conductive layer" (black area covering the signal cables A and B) to the converter case, terminal,
and other leadwires. If it is touched, operation of the converter may be incorrect. When the cable is terminated,
remove the conductive layer properly.

3-6

IM 1F6A0-01E

3. WIRING

3.7 Wiring Cautions

(1) Lay wiring as far as possible from electrical noise

sources such as large transformers, motors and power
supplies.

(2) It is recommended that crimp-on type solderless lugs be

used for large wire ends.

(3) For general use, it is recommended that conduits and

ducts or racks be used to protect wiring from water or
mechanical damage. A rigid steel conduit or flexible
metal conduit is recommended. See Figure 3.9.

3.8 Grounding

IMPORTANT

When a lightning protector (option code: /A) is
selected, use a grounding resistance of 10Ω or less.

(1) The grounding terminals

outside of the terminal area. Either terminal may be
used.

(2) For pulse output version, ground the flowmeter. Also

ground the shielded cable between the converter and the
pulse receiver.

(3) Grounding should satisfy Class D requirements (ground

resistance 100Ω or less).

(4) Use 600V PVC insulated wire for grounding.

are located on the inside and

Figure 3.9

F030701.EPS

Figure 3.10

Integral Type

Grounding

terminals

F030801.EPS

3-7

IM 1F6A0-01E

4. BASIC OPERATING PROCEDURES

4. BASIC OPERATING PROCEDURES

Data setting can be performed with the three keys on the front
panel (SET,SHIFT and INC) or using a handheld
BRAIN(BT) terminal and HART communicator.

4.1 Construction of the Display

Figure 4.1 shows the configuration of the digitalYEWFLO
display panel (if equipped).

Data Display

1

(Upper)

Unit Display

4

Alarm Display

3

Data Display

2

(Lower)

Unit Display

4

INCSHIFT

SET

Setting Keys

5

F040101.EPS

■ Description of unit indications and its votes.

Table 4.1 shows the description of unit indications and
it's votes.

Table 4.1 Unit Indicator

Unit Upper Indication Lower Indication

%

3

m

艎

3

Nm

N艎

3

Sm

S艎

kg

t
/h
/m

/s
/d
°C

(*1) Only for /MV

(*1)

T040101.EPS

Figure 4.1 Construction of the Display

1

Data Display(Upper) :Displays flowrate data, setting

data, total data.

2

Data Display(Lower) :Displays total data, alarm data.

3

Alarm Display :Displays alarm of a flow error

and a vibration error.

4

Unit Display :Displays Flowrate unit.

5

Setting Keys : These keys are used to change

flow rate data displays and type
of setting data.

4-1

IM 1F6A0-01E

4.2 Display Contents in Display Section

The display content items are classified in the following three items.

Table 4.2 Mode Name List

Mode (status) Name Display Contents

Flowrate display
mode

Setting mode

Alarm number display
mode

Mode represents that the system is in a state where the relevant setting or display is possible.

● Display Example

Flowrate Display Mode Setting Mode Error Mode

A mode in which instantaneous flow rates or totalized values are displayed.
Display content is usually selected either in display content selection mode or by setting parameters
via BRAIN communication.

In this mode, parameter contents are confirmed or data is updated using the setting section. The mode is
changed to this mode when [SET] key is pressed in normal mode.

This mode is overlapped when an alarm is occurring in display mode. The alarm number presentation to
indicate alarm contents (about 2 sec) and the normal data display (about 4 sec ) are repeated alternatively.

SET

SHIFT + SET

4. BASIC OPERATING PROCEDURES

T040201.EPS

UPPER
Flow rate

UPPER
Flow rate (%)

This mode display can be selected
below.

• Upper display : Flow rate

• Lower display : Total rate or Blank

LOWER
Total rate

LOWER
Blank

Switching
of setting
number

SHIFT

• This mode is used to check parameter
content and rewrite data. This mode can
be called up from the flowrate display
mode by pressing the “SET” key.

• Setting item and setting number can be
changed when pressing “SHFT” key.

• This mode can be called up by pressing
“SET” key while pressing “SHIFT” key
when setting mode is displayed.

NORMAL
INDICATION
(4sec)

ERROR INDICATION
(2sec)

• When an alarm situation occurs,
this mode will replace the current
mode (flow rate or setting mode)
to show what type of alarm has
occurred.

• Refer to “5.5 Error Code Lists”
about the error descriptions and
error No.

Alternately

F040201.EPS

4-2

IM 1F6A0-01E

4.3 Display Contents in Display Section

The display mode is a mode in which instantaneous flow
rates or totalized flow are displayed. In display mode, there
are three display modes as shown in Table 4.3.

Table 4.3 Display Mode

Name Contents

% Display
(Flow rate)

Engineering
Display Unit

Totalized
Display

% Display
(Temperature)
(*1)

Temperature
display(*1)

(*1) When option code /MV is selected,

this function is available.

Instantaneous % flow rate is
displayed.

Instantaneous flow rate in an
engineering unit is displayed.

Totalized flow displayed
without indicating the decimal
point.

Instantaneous temperature is
displayed.
In this case, “t” is displayed
simultaneously (Refer to
Figure 4.2).

Temperature value is
displayed.

------Blank

Upper

Display

Lower

Display

T040301.EPS

4. BASIC OPERATING PROCEDURES

F040301.EPS

Figure 4.2 Example

Display mode can be changed using the BT200 terminal or
the indicator setting section.

• For operation using BT200, perform changes using the
parameter item “ B30:UPPER DISP” and “B31:LOWER
DISP” referring to section 5. Parameters.

• For operation using indicator, change B30 and B31
parameter item number to display an appropriate display.

IMPORTANT

After setting a parameter, keep the power on for at
least 30 seconds.
If the power of flowmeter is turned off, a parameter
setting is released.

4-3

IM 1F6A0-01E

4. BASIC OPERATING PROCEDURES

4.3.1 Change the Display Mode from % Display to Engineering Unit

The display mode can be changed referring 5.3 parameter list.

SET

INCSHIFT

Press “ SET ” key.

SET

INCSHIFT

Press “ SHIFT ” key.

Indication of %
display.

Enter the setting
mode.

Enter the parameter
item.

Indicate “ 01 ” of
engineering unit
referring 5.3
parameter list.

SET

INCSHIFT

Press “ SET ” key.

Ensure the setting
data.

SET

INCSHIFT

Press “ SET ” key.

Finish the setting.

SET

INCSHIFT

Press “ INC ” key any time.

Indicate “ 30 ”
referring 5.3
parameter list.

SET

INCSHIFT

Press “ SET ” key.

Enter the data
input item.

SET

INCSHIFT

SET

INCSHIFT

Press “ SET ” and “ SHIFT ” key.

Return to display
mode.

SET

INCSHIFT

IMPORTANT

After setting a parameter, keep the power on for at
least 30 seconds.
If the power of flowmeter is turned off, a parameter
setting is released.

Press “ INC ” key.

4-4

F040302.EPS

IM 1F6A0-01E

4.3.2 Indicate the Total Rate in the Lower Display

The display mode can be changed referring 5.3 parameter list.

4. BASIC OPERATING PROCEDURES

SET

INCSHIFT

Press “ SET ” key.

SET

INCSHIFT

Press “ SHIFT ” key.

Indication of
engineering unit
display.
Lower display is
“ Blank ”.

Enter to the setting
mode.

Enter to the
parameter item.

Indicate “ 01 ” of
lower the display
item referring 5.3
parameter list.

SET

INCSHIFT

Press “ SET ” key.

Ensure the setting
data.

SET

INCSHIFT

Press “ SET ” key.

Finish the setting.

SET

INCSHIFT

Press “ INC ” key any time.

Indicate “ 31 ”
referring 5.3
parameter list.

SET

INCSHIFT

Press “ SET ” key.

Enter the data input
item.

SET

INCSHIFT

SET

INCSHIFT

Press “ SET ” and “ SHIFT ” key.

Return to display
mode.

SET

INCSHIFT

IMPORTANT

After setting a parameter, keep the power on for at
least 30 seconds.
If the power of flowmeter is turned off, a parameter
setting is released.

Press “ INC ” key.

4-5

F040303.EPS

IM 1F6A0-01E

4. BASIC OPERATING PROCEDURES

4.4 Setting Mode

The setting mode is used for checking parameters and
rewriting data. The following is an overview of the setting
mode.

NOTE

•Refer to 5.3 Parameter List and 5.4 Parameter

description for information on how to change
setting.

4.4.1 Structure of Setting Mode Display

Simple parameter sheet

IN this sheet, a setting flow chart and the parameter list
required to operate digitalYEWFLO is indicated.

Item number

Change item number using
“SHIFT” key and “INC”key.

•When completing setting, press “SHIFT” key and “SET”
key simultaneously. The mode move to the “display
mode”.

IMPORTANT

After setting a parameter, keep the power on for at
least 30 seconds.
If the power of flowmeter is turned off, a parameter
setting is released.

INCSHIFT

Flowrate Display Mode

SHIFT+SET

Parameter Setting Mode

SHIFT+SET

SET

SET

Select Item

SET

Set Data

SET

Data number

Change the data number
using “SHIFT” key and
“INC” key.

F040401.EPS

SHIFT : Menu
INC : Inc. Menu / Item Number

Select T ype

INC : Inc. Data Number

Numeric Value Setting T ype

SHIFT : Move Cursor
INC : Inc. Numeric Value

Item Number

SHIFT or INC

Check Setting Data

SET

Fix Setting Data

F040401_1.EPS

Figure 4.3 Indicator Construction and Parameter Setting

Procedure

4-6

IM 1F6A0-01E