YOKOGAWA DPharp EJA120A, DPharp EJA310A, DPharp EJA220A, DPharp EJA130A, DPharp EJA430A User Manual

User’s
Manual

Yokogawa Electric Corporation

1

2

3

4

5

6

7

8

EJA Series Differential Pressure and
Pressure Transmitters
Installation Manual

IM 01C22A01-01E

IM 01C22A01-01E

2nd Edition

CD-ROM included

1. Introduction

1.1 For Safe Use of Product ..............................................2

1.2 Warranty ......................................................................2

1.3 ATEX Documentation ..................................................4

2. Handling Cautions

2.1 Model and Specifi cations Check .................................5

2.2 Selecting the Installation Location ..............................5

2.3 Pressure Connection ..................................................6

2.4 Installation of Explosion Protected Type .....................6

2.5 EMC Conformity Standards .....................................13

2.6 PED (Pressure Equipment Directive) ...................... 13

2.7 Low Voltage Directive ............................................... 14

3. Installation

3.1 Mounting................................................................... 15

3.2 Mounting the Diaphragm Seals ............................... 15

3.3 Diaphragm Seals Installation Consideration ............ 16

3.4 Affi xing the Tefl on Film ............................................. 17

3.5 Rotating Transmitter Section .................................... 18

3.6 Changing the Direction of Integral Indicator............. 18

4. Installing Impulse Piping

4.1 Impulse Piping Installation Precautions ...................19

4.2 Impulse Piping Connection Examples .....................21

4.3 Process Piping Installation Precautions ................... 22

5. Wiring

5.1 Wiring Precautions ................................................... 23

5.2 Connections of External Wiring to T erminal Box ......23

5.3 Wiring ....................................................................... 23

5.4 Grounding ................................................................ 25

5.5 Power Supply Voltage and Load Resistance ........... 25

6. Operation

6.1 Preparation for Starting Operation ........................... 26

6.2 Zero Point Adjustment .............................................. 27

7. Errors and Countermeasures

8. Parameter Summary

<1. Introduction>

1

IM 01C22A01-01E

1. Introduction

Thank you for purchasing the DPharp electronic pressure
transmitter.

This manual provides the basic guidelines for installation
and wiring procedures of the DPharp EJA Series
with BRAIN and HART protocols. It does not provide
the product specifi c functional specifi cations and
explanations, maintenance, troubleshooting, and fi eldbus
communication operating procedures, both F

OUNDATION

Fieldbus

TM

and PROFIBUS PA. For the items which are
not covered in this manual, see the applicable user’s
manuals in the CD-ROM attached to this manual as listed
in T able 1.1.

F0101.ai

● Installation manual (this document)

EJA series common manual

<Contents>

• Installation

• Impulse piping installation

• Wiring

• Zeroing

● Attached CD-ROM includes PDF manuals for:

• Product specific manuals, 7 PDFs by model code

• HART operation manual, 1 PDF

• Fieldbus communication manuals, 2 PDFs

<Contents of product specific manuals>

• Installation • BT200 operation

• Impulse piping installation • Maintenance

• Wiring • Specifications

• Zeroing • Parts list

Table 1.1 PDF Manual List and Applicable Style Code

Models Document No. Style

EJA110A, EJA120A, and
EJA130A

IM 01C21B01-01E

S1

EJA210A and EJA220A IM 01C21C01-01E

S1

EJA310A, EJA430A, and
EJA440A

IM 01C21D01-01E

S1

EJA510A and EJA530A IM 01C21F01-01E

S2

EJA118W , EJA118N, and
EJA118Y

IM 01C22H01-01E

S2

EJA438W and EJA438N IM 01C22J01-01E

S2

EJA115 IM 01C22K01-01E

S3

EJA Series HART Protocol IM 01C22T01-01E

—

EJA Series F

OUNDATION Fieldbus

Communication Type

IM 01C22T02-01E

—

EJA Series PROFIBUS P A
Communication Type

IM 01C22T03-00E

—

 Regarding This Manual

• This manual should be passed on to the end user.

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

• All rights reserved. No part of this manual may be
reproduced in any form without Y okogawa’ s written
permission.

• Y okogawa makes no warranty of any kind with regard
to this manual, including, but not limited to, implied
warranty of merchantability and fi tness for a particular
purpose.

• If any question arises or errors are found, or if any
information is missing from this manual, please inform
the nearest Y okogawa sales offi ce.

• The specifi cations covered by this manual are limited
to those for the standard type under the specifi ed
model number break-down and do not cover custom­made instruments.

• Please note that changes in the specifi cations,
construction, or component parts of the instrument
may not immediately be refl ected in this manual at
the time of change, provided that postponement of
revisions will not cause diffi culty to the user from a
functional or performance standpoint.

• Y okogawa assumes no responsibilities for this
product except as stated in the warranty.

• If the customer or any third party is harmed by the use
of this product, Y okogawa assumes no responsibility
for any such harm owing to any defects in the product
which were not predictable, or for any indirect
damages.

NOTE

For FOUNDATION Fieldbus, PROFIBUS PA and HART
protocol versions, please refer to manuals in the
attached CD-ROM, in addition to this manual.

• The following safety symbol marks are used in this
manual:

WARNING

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

1

Introduction

<1. Introduction>

2

IM 01C22A01-01E

CAUTION

Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may
also be used to alert against unsafe practices.

IMPORTANT

Indicates that operating the hardware or software in
this manner may damage it or lead to system failure.

NOTE

Draws attention to information essential for
understanding the operation and features.

Direct current

1.1 For Safe Use of Product

For the protection and safety of the operator and the
instrument or the system including the instrument, please
be sure to follow the instructions on safety described
in this manual when handling this instrument. In case
the instrument is handled in contradiction to these
instructions, Y okogawa does not guarantee safety.
Please give your attention to the followings.

(a) Installation

• The instrument must be installed by an expert
engineer or a skilled personnel. The procedures
described about INSTALLATION are not permitted for
operators.

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

• The instrument installed in the process is under
pressure. Never loosen the process connector bolts
to avoid the dangerous spouting of process fl uid.

• During draining condensate from the pressure
detector section, take appropriate care to avoid
contact with the skin, eyes or body, or inhalation of
vapors, if the accumulated process fl uid may be toxic
or otherwise harmful.

• When removing the instrument from hazardous
processes, avoid contact with the fl uid and the interior
of the meter.

• All installation shall comply with local installation
requirement and local electrical code.

(b) Wiring

• The instrument must be installed by an expert
engineer or a skilled personnel. The procedures
described about WIRING are not permitted for
operators.

• Please confi rm that voltages between the power
supply and the instrument before connecting the
power cables and that the cables are not powered
before connecting.

(c) Operation

• Wait 10 min. after power is turned off, before opening
the covers.

(d) Maintenance

• Please do not carry out except being written to
maintenance descriptions. When these procedures
are needed, please contact nearest YOKOGAW A
offi ce.

• Care should be taken to prevent the build up of drift,
dust or other material on the display glass and name
plate. In case of its maintenance, soft and dry cloth is
used.

(e) Explosion Protected Type Instrument

• Users of explosion proof instruments should refer fi rst
to section 2.4 (Installation of an Explosion Protected
Instrument) of this manual.

• The use of this instrument is restricted to those who
have received appropriate training in the device.

• Take care not to create sparks when accessing the
instrument or peripheral devices in a hazardous
location.

(f) Modifi cation

• Y okogawa will not be liable for malfunctions or
damage resulting from any modifi cation made to this
instrument by the customer.

1.2 Warranty

• The warranty shall cover the period noted on the
quotation presented to the purchaser at the time of
purchase. Problems occurred during the warranty
period shall basically be repaired free of charge.

• In case of problems, the customer should contact the
Y okogawa representative from which the instrument
was purchased, or the nearest Y okogawa offi ce.

• If a problem arises with this instrument, please inform
us of the nature of the problem and the circumstances
under which it developed, including the model
specifi cation and serial number. Any diagrams,
data and other information you can include in your
communication will also be helpful.

<1. Introduction>

3

IM 01C22A01-01E

• Responsible party for repair cost for the problems
shall be determined by Y okogawa based on our
investigation.

• The Purchaser shall bear the responsibility for
repair costs, even during the warranty period, if the
malfunction is due to:

- Improper and/or inadequate maintenance by the

purchaser.

- Failure or damage due to improper handling, use

or storage which is out of design conditions.

- Use of the product in question in a location

not conforming to the standards specifi ed by
Y okogawa, or due to improper maintenance of the
installation location.

- Failure or damage due to modifi cation or repair

by any party except Y okogawa or an approved
representative of Y okogawa.

- Malfunction or damage from improper relocation of

the product in question after delivery.

- Reason of force majeure such as fi res,

earthquakes, storms/fl oods, thunder/lightening,
or other natural disasters, or disturbances, riots,
warfare, or radioactive contamination.

1

Introduction

<1. Introduction>

4

IM 01C22A01-01E

1.3 ATEX Documentation

This is only applicable to the countries in European Union.

GB

DK

I

E

NL

SF

P

F

D

S

LT

LV

PL

EST

SLO

H

BG

RO

M

CZ

SK

GR

<2. Handling Cautions>

5

IM 01C22A01-01E

2. Handling Cautions

When the transmitter is delivered, visually check them
to make sure that no damage occurred during shipment.
Also check that all transmitter mounting hardware shown
in Figure 2.1 is included. If the transmitter was ordered
without the mounting bracket or without the process
connector, the transmitter mounting hardware is not
included.

Table 2.1 Applicable Model Code for Mounting

Hardware

Applicable

model

Suffi x code Part name Qty

EJA110A
EJA120A
EJA130A

Process
connections
1, 2, 3, and 4

Process connector bolt 4
Process connector 2
Process connector

gasket

2

EJA210A
EJA220A
EJA310A
EJA430A
EJA440A

Process
connections
1, 2, 3, and 4

Process connector bolt 2
Process connector 1
Process connector

gasket

1

EJA110A
EJA120A
EJA130A
EJA310A
EJA430A
EJA440A
EJA118
EJA438
EJA115

Mounting bracket
A, B, C, and D

U-bolt 1
U-bolt nut 2

Mounting bracket
(L or fl at type)

1

Transmitter mounting
bolt

4

EJA510A
EJA530A

Mounting bracket
E and F

U-bolt and nut (L) 1
U-bolt and nut (S) 1
Mounting bracket

(L or fl at type)

1

Plate 1
Adapter 1

EJA210A
EJA438W

Option code /T

Tefl on fi lm 1
Fluorinated oil 1

EJA118W

Option code /T

Tefl on fi lm 2
Fluorinated oil 2

EJA110A
EJA120A
EJA130A
EJA310A
EJA430A
EJA440A

- 

1
2
3
4

 - 

A
B
C
D

EJA115 -  - 

A
B
C
D

EJA210A
EJA220A

1
2
3
4

 -  - 

EJA118
EJA438

A
B

-  -  - 

F0201.ai

EJA510A
EJA530A

E
F

-  - 

Bolt
Process connector

Process connector
Gasket

U-bolt nut

U-bolt

Mounting bracket
(L type)

Transmitter mounting bolt

Mounting bracket
(Flat type)

F0202.ai

Teflon film

Fluorinated oil

U-bolt nut (S)

Plate

U-bolt nut (L)

U-bolt (L)

Mounting bracket
(Flat type)

Adapter

U-bolt (S)

Figure 2.1 T ransmitter Mounting Hardware

2.1 Model and Specifi cations
Check

The model name and specifi cations are indicated on the
name plate attached to the case.

F0203.ai

: Refer to USER'S MANUAL

Figure 2.2 Name Plate

2.2 Selecting the Installation
Location

The transmitter is designed to withstand severe
environmental conditions. However, to ensure stable
and accurate operation for years, observe the following
precautions when selecting an installation location.

(a) Ambient Temperature

Avoid locations subject to wide temperature variations
or a signifi cant temperature gradient. If the location
is exposed to radiant heat from plant equipments,
provide adequate thermal insulation and/or
ventilation.

Handling Cautions

2

<2. Handling Cautions>

6

IM 01C22A01-01E

(b) Ambient Atmosphere
Avoid installing the transmitter in a corrosive

atmosphere. If the transmitter must be installed in
a corrosive atmosphere, there must be adequate
ventilation as well as measures to prevent intrusion or
stagnation of rain water in conduits.

(c) Shock and Vibration
Select an installation site suffering minimum shock

and vibration (although the transmitter is designed to
be relatively resistant to shock and vibration).

(d) Installation of Explosion-protected Transmitters
Explosion-protected transmitters can be installed

in hazardous areas according to the types of
gases for which they are certifi ed. See Subsection

2.4 “Installation of Explosion Protected Type
Transmitters.”

2.3 Pressure Connection

WARNING

• Instrument installed in the process is under
pressure. Never loosen the process connector
bolts to avoid the dangerous spouting of process
fl uid.

• During draining condensate from the pressure
detector section, take appropriate care to avoid
contact with the skin, eyes or body, or inhalation
of vapors, if the accumulated process fl uid may be
toxic or otherwise harmful.

The following precautions must be observed in order to
safely operate the transmitter under pressure.

(a) Make sure that the process connector bolts are

tightened fi rmly.

(b) Make sure that there are no leaks in the impulse

piping.

(c) Never apply a pressure higher than the specifi ed

maximum working pressure.

CAUTION

Maximum working pressure of the model EJA120A
differential pressure transmitter is 50 kPa
{0.5 kgf/cm

2

}.

Should the pressure exceed 50 kPa {0.5 kgf/cm

2

}, it
is possible to break the sensor. Proceed with caution
when applying pressure.

2.4 Installation of Explosion
Protected T ype

In this section, further requirements and differences and
for explosionproof type instrument are described.

For explosionproof type instrument, the description in this
chapter is prior to other description in this users manual.

For the intrinsically safe equipment and explosionproof
equipment, in case the instrument is not restored to
its original condition after any repair or modifi cation
undertaken by the customer, intrinsically safe
construction or explosionproof construction is damaged
and may cause dangerous condition. Please contact
Y okogawa for any repair or modifi cation required to the
instrument.

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA
explosion protected type, please refer to manuals in
the attached CD-ROM.

CAUTION

This instrument is tested and certifi ed as intrinsically
safe type or explosionproof type. Please note that the
construction of the instrument, installation, external
wiring, maintenance or repair is strictly restricted, and
non-observance or negligence of this restriction would
result in dangerous condition.

WARNING

T o preserve the safety of explosionproof equipment
requires great care during mounting, wiring, and
piping. Safety requirements also place restrictions on
maintenance and repair activities. Please read the
following sections very carefully.

2.4.1 FM Approval

a. FM Intrinsically Safe Type

Caution for FM intrinsically safe type. (Following
contents refer “DOC. No. IFM012-A12 P.1 and 2.”)

Note 1. Model EJA Series pressure transmitters with

optional code /FS1 are applicable for use in
hazardous locations.

• Applicable Standard: FM3600, FM3610, FM361 1,
FM3810, ANSI/NEMA250

<2. Handling Cautions>

7

IM 01C22A01-01E

• Intrinsically Safe for Class I, Division 1, Groups A,
B, C & D. Class II, Division 1, Groups E, F & G and
Class III, Division 1 Hazardous Locations.

• Nonincendive for Class I, Division 2, Groups A, B, C &
D. Class II, Division 2, Groups E, F & G and Class III,
Division 1 Hazardous Locations.

• Outdoor hazardous locations, NEMA 4X.

• Temperature Class: T4

• Ambient temperature: –40 to 60°C

Note 2. Entity Parameters

• Intrinsically Safe Apparatus Parameters

[Groups A, B, C, D, E, F and G]
Vmax = 30 V, Ci = 22.5 nF, Imax = 165 mA,

Li = 730 μH, Pmax = 0.9 W

* Associated Apparatus Parameters

(FM approved barriers)

Voc ≤ 30 V , Ca > 22.5 nF, Isc ≤ 165 mA, La > 730 μH,

Pmax ≤ 0.9W

• Intrinsically Safe Apparatus Parameters

[Groups C, D, E, F and G]
Vmax = 30 V, Ci = 22.5 nF, Imax = 225 mA,

Li = 730 μH, Pmax = 0.9 W

* Associated Apparatus Parameters

(FM approved barriers)

Voc ≤ 30 V , Ca > 22.5 nF, Isc ≤ 225 mA,

La > 730 μH, Pmax ≤ 0.9 W

• Entity Installation Requirements

Vmax ≥ Voc or Vt, Imax ≥ Isc or It,

Pmax (IS Apparatus) ≥ Pmax (Barrier),
Ca ≥ Ci + Ccable, La ≥ Li + Lcable

Note 3. Installation

• Barrier must be installed in an enclosure that meets
the requirements of ANSI/ISA S82.01.

• Control equipment connected to barrier must not use
or generate more than 250 V rms or V dc.

• Installation should be in accordance with ANSI/ISA
RP12.6 “Installation of Intrinsically Safe Systems for
Hazardous (Classifi ed) Locations” and the National
Electric Code (ANSI/NFPA 70).

• The confi guration of associated apparatus must be
FMRC Approved.

• Dust-tight conduit seal must be used when installed in
a Class II, III, Group E, F and G environments.

• Associated apparatus manufacturer’s installation
drawing must be followed when installing this
apparatus.

• The maximum power delivered from the barrier must
not exceed 0.9 W.

• Note a warning label worded “SUBSTITUTION OF
COMPONENTS MAY IMPAIR INTRINSIC SAFETY,”
and “INSTALL IN ACCORDANCE WITH DOC. No.
IFM012-A12 P.1 and 2.”

Note 4. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void Factory
Mutual Intrinsically safe and Nonincendive Approval.

F0204.ai

Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G

EJA Series Pressure
Transmitters

EJA Series Pressure
Transmitters

Safety Barrier

Supply

Supply

Hazardous Location Non-hazardous Location

Hazardous Location Non-hazardous Location

General
Purpose
Equipment

+
–

+
–

+
–

+
–

+
–

+
–

[Intrinsically Safe]

Class I, II, Division 2,
Groups A, B, C, D, E, F, G
Class III, Division 1.

Not Use
Safety Barrier

[Nonincendive]

General
Purpose
Equipment

b. FM Explosionproof Type

Caution for FM explosionproof type.

Note 1. Model EJA Series dif ferential, gauge, and

absolute pressure transmitters with optional
code /FF1 are applicable for use in hazardous
locations.

• Applicable Standard: FM3600, FM3615, FM3810,
ANSI/NEMA250

• Explosionproof for Class I, Division 1, Groups B, C
and D.

• Dust-ignitionproof for Class II/III, Division 1, Groups E,
F and G.

• Outdoor hazardous locations, NEMA 4X.

• T emperature Class: T6

• Ambient Temperature: –40 to 60°C

• Supply Voltage: 42 V dc max.

• Output signal: 4 to 20 mA

Note 2. Wiring

• All wiring shall comply with National Electrical Code
ANSI/NEPA70 and Local Electrical Codes.

• When installed in Division 1, “FACTOR Y SEALED,
CONDUIT SEAL NOT REQUIRED.”

Handling Cautions

2

<2. Handling Cautions>

8

IM 01C22A01-01E

Note 3. Operation

• Keep the “CAUTION” nameplate attached to the
transmitter.

CAUTION: OPEN CIRCUIT BEFORE

REMOVING COVER. FACTOR Y SEALED,
CONDUIT SEAL NOT REQUIRED. INSTALL
IN ACCORDANCE WITH THE INSTRUCTION
MANUAL IM 1C22.

• T ake care not to generate mechanical sparking when
accessing to the instrument and peripheral devices in
a hazardous location.

Note 4. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void Factory
Mutual Explosionproof Approval.

c. FM Intrinsically Safe T ype/FM

Explosionproof T ype

Model EJA Series pressure transmitters with optional
code /FU1 can be selected the type of protection (FM
Intrinsically Safe or FM Explosionproof) for use in
hazardous locations.

Note 1. For the installation of this transmitter, once a

particular type of protection is selected, any
other type of protection cannot be used. The
installation must be in accordance with the
description about the type of protection in this
instruction manual.

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other
than the selected type of protection when the
transmitter is installed.

2.4.2 CSA Certifi cation

a. CSA Intrinsically Safe Type

Caution for CSA Intrinsically safe type. (Following
contents refer to “DOC No. ICS003-A12 P.1-1 and
P.1-2.”)

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional
code /CS1 are applicable for use in hazardous
locations

Certifi cate: 1053843

• Applicable Standard: C22.2 No.0, No.0.4, No.25,
No.30, No.94, No.142, No.157, No.213

• Intrinsically Safe for Class I, Division 1, Groups A,
B, C & D. Class II, Division 1, Groups E, F & G and
Class III, Division 1 Hazardous Locations.

• Nonincendive for Class I, Division 2, Groups A, B, C
& D, Class II, Division 2, Groups F & G, and Class III,
Hazardous Locations. (not use Safety Barrier)

• Encl. “Type 4X”

• T emperature Class: T4

• Ambient temperature: –40 to 60°C

• Process Temperature: 120°C max.

Note 2 Entity Parameters

• Intrinsically safe ratings are as follows:
Maximum Input Voltage (Vmax) = 30 V
Maximum Input Current (Imax) = 165 mA
Maximum Input Power (Pmax) = 0.9 W
Maximum Internal Capacitance (Ci) = 22.5 nF
Maximum Internal Inductance (Li) = 730 μH
* Associated apparatus (CSA certifi ed barriers)
Maximum output voltage (Voc) ≤ 30 V
Maximum output current (Isc) ≤ 165 mA
Maximum output power (Pmax) ≤ 0.9 W

Note 3. Installation

• All wiring shall comply with Canadian Electrical Code
Part I and Local Electrical Codes.

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation and Y okogawa Corporation
of America is prohibited and will void Canadian
Standards Intrinsically safe and nonincendive
Certifi cation.

F0205.ai

Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G

EJA Series Pressure
Transmitters

EJA Series Pressure
Transmitters

Safety Barrier

Supply

Supply

Hazardous Location Non-hazardous Location

Hazardous Location Non-hazardous Location

General
Purpose
Equipment

+
–

+
–

+
–

+
–

+
–

+
–

[Intrinsically Safe]

Class I, II, Division 2,
Groups A, B, C, D, E, F, G
Class III, Division 1.

Not Use
Safety Barrier

[Nonincendive]

General
Purpose
Equipment

b. CSA Explosionproof T ype

Caution for CSA explosionproof type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional
code /CF1 are applicable for use in hazardous
locations:

Certifi cate: 1089598

• Applicable Standard: C22.2 No.0, No.0.4, No.25,
No.30, No.94, No.142

• Explosionproof for Class I, Division 1, Groups B, C
and D.

• Dust-ignitionproof for Class II/III, Division 1, Groups E,
F and G.

• Encl “Type 4X”

<2. Handling Cautions>

9

IM 01C22A01-01E

• T emperature Class: T6, T5, and T4

• Process Temperature: 85°C (T6), 100°C (T5), and
120°C (T4)

• Ambient Temperature: –40 to 80°C

• Supply Voltage: 42 V dc max.

• Output Signal: 4 to 20 mA

Note 2. Wiring

• All wiring shall comply with Canadian Electrical Code
Part I and Local Electrical Codes.

• In hazardous location, wiring shall be in conduit as
shown in the fi gure.

CAUTION: SEAL ALL CONDUITS WITHIN 50

cm OF THE ENCLOSURE.
UN SCELLEMENT DOIT ÊTRE INST ALLÉ À
MOINS DE 50 cm DU BÎTIER.

• When installed in Division 2, “SEALS NOT
REQUIRED.”

Note 3. Operation

• Keep the “CAUTION” label attached to the transmitter.

CAUTION: OPEN CIRCUIT BEFORE

REMOVING COVER.
OUVRIR LE CIRCUIT AV ANT D´NLEVER LE
COUVERCLE.

• T ake care not to generate mechanical sparking when
accessing to the instrument and peripheral devices in
a hazardous location.

Note 4. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation and Y okogawa Corporation
of America is prohibited and will void Canadian
Standards Explosionproof Certifi cation.

Non-hazardous
Location
Equipment

42 V DC Max.
4 to 20 mA DC
Signal

Non-Hazardous

Locations

Hazardous Locations Division 1

Non-Hazardous

Locations

Hazardous Locations Division 2

50 cm Max.

Sealing Fitting

Conduit

EJA Series

Non-hazardous
Location
Equipment

42 V DC Max.
4 to 20 mA DC
Signal

Sealing Fitting

EJA Series

F0206.ai

c. CSA Intrinsically Safe T ype/CSA

Explosionproof T ype

Model EJA Series pressure transmitters with optional

code /CU1 can be selected the type of protection
(CSA Intrinsically Safe or CSA Explosionproof) for use
in hazardous locations.

Note 1. For the installation of this transmitter, once a

particular type of protection is selected, any
other type of protection cannot be used. The
installation must be in accordance with the
description about the type of protection in this
instruction manual.

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other
than the selected type of protection when the
transmitter is installed.

2.4.3 IECEx Certifi cation

Model EJA Series differential, gauge, and absolute
pressure transmitters with optional code /SU2 can
be selected the type of protection (IECEx Intrinsically
Safe/type n or fl ameproof) for use in hazardous
locations.

Note 1. For the installation of this transmitter, once a

particular type of protection is selected, any
other type of protection cannot be used. The
installation must be in accordance with the
description about the type of protection in this
instruction manual.

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other
than the selected type of protection when the
transmitter is installed.

a. IECEx Intrinsically Safe T ype / type n

Caution for IECEx Intrinsically safe and type n.

Note 1. Model EJA Series dif ferential, gauge, and

absolute pressure transmitters with optional
code /SU2 are applicable for use in hazardous
locations.

• No. IECEx KEM 06.0007X

• Applicable Standard: IEC 60079-0:2004,
IEC 60079-11:1999, IEC 60079-15:2005,
IEC 60079-26:2004

• Type of Protection and Marking Code: Ex ia IIC T4,
Ex nL IIC T4

• Ambient Temperature :–40 to 60°C

• Max. Process Temp.: 120°C

• Enclosure: IP67

Note 2. Entity Parameters

• Intrinsically safe ratings are as follows:
Maximum Input Voltage (Ui) = 30 V
Maximum Input Current (Ii) = 165 mA
Maximum Input Power (Pi) = 0.9 W
Maximum Internal Capacitance (Ci) = 22.5 nF
Maximum Internal Inductance (Li) = 730 μH

Handling Cautions

2

<2. Handling Cautions>

10

IM 01C22A01-01E

• Type "n" ratings are as follows:
Maximum Input Voltage (Ui) = 30 V
Maximum Internal Capacitance (Ci) = 22.5 nF
Maximum Internal Inductance (Li) = 730 μH

• Installation Requirements
Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi, Co ≥ Ci + Ccable,
Lo ≥ Li + Lcable, Uo, Io, Po, Co, and
Lo are parameters of barrier.

Note 3. Installation

• In any safety barrier used output current must be
limited by a resistor 'R' such that Io=Uo/R.

• The safety barrier must be IECEx certifi ed.

• Input voltage of the safety barrier must be less than
250 Vrms/Vdc.

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation and will void IECEx Intrinsically
safe and type n certifi cation.

• The cable entry devices and blanking elements for
type n shall be of a certifi ed type providing a level of
ingress protection of at least IP54, suitable for the
conditions of use and correctly installed.

• Electrical Connection:
The type of electrical connection is stamped near the
electrical connection port according to the following
marking.

F0207.ai

Location of the marking

Screw Size Marking

ISO M20 × 1.5 female M

AANSI 1/2 NPT female

Note 4. Operation

• WARNING:
WHEN AMBIENT TEMPERATURE ≥ 55°C,
USE THE HEA T -RESISTING CABLES ≥ 90°C.

Note 5. Special Conditions for Safe Use

• WARNING:
IN THE CASE WHERE THE ENCLOSURE OF
THE PRESSURE TRANSMITTER IS MADE OF
ALUMINUM, IF IT IS MOUNTED IN AN AREA
WHERE THE USE OF ZONE 0 IS REQUIRED,
IT MUST BE INST ALLED SUCH, THA T, EVEN IN
THE EVENT OF RARE INCIDENTS, IGNITION
SOURCES DUE TO IMP ACT AND FRICTION
SPARKS ARE EXCLUDED.

F0208.ai

EJA Series Pressure
Transmitters

Supply

Hazardous Location Non-hazardous Location

+
–

+
–

Not Use
Safety Barrier

[type n]

IECEx Certified
Equipment [nL]

Group IIC, Zone 2

EJA Series Pressure
Transmitters

IECEx certified
Safety Barrier

Supply

Hazardous Location Non-hazardous Location

General
Purpose
Equipment

+
–

+
–

+
–

+
–

[Intrinsically Safe]

Group I/IIC, Zone 0

b. IECEx Flameproof Type

Caution for IECEx fl ameproof type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional
code /SU2 are applicable for use in hazardous
locations:

• No. IECEx KEM 06.0005

• Applicable Standard: IEC60079-0:2004,
IEC60079-1:2003

• Type of Protection and Marking Code:
Ex d IIC T6...T4

• Enclosure: IP67

• Maximum Process Temperature: 120°C (T4),
100°C (T5), 85°C (T6)

• Ambient Temperature: –40 to 75°C (T4),
–40 to 80°C (T5), –40 to 75°C (T6)

• Supply Voltage: 42 V dc max.

• Output Signal: 4 to 20 mA dc

Note 2. Wiring

• In hazardous locations, the cable entry devices shall
be of a certifi ed fl ameproof type, suitable for the
conditions of use and correctly installed.

• Unused apertures shall be closed with suitable
fl ameproof certifi ed blanking elements. (The plug
attached is certifi cated as the fl ame proof IP67 as a
part of this apparatus.)

• In case of ANSI 1/2 NPT plug, ANSI hexagonal
wrench should be applied to screw in.

<2. Handling Cautions>

11

IM 01C22A01-01E

Note 3. Operation

• WARNING:
AFTER DE-ENERGIZING, DELAY 10 MINUTES
BEFORE OPENING.

• WARNING:
WHEN AMBIENT TEMPERATURE ≥ 70°C,
USE THE HEA T -RESISTING CABLES ≥ 90°C.

• T ake care not to generate mechanical sparking when
accessing to the instrument and peripheral devices in
a hazardous location.

Note 4. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void IECEx
Certifi cation.

2.4.4 CENELEC ATEX (KEMA)
Certifi cation

(1) Technical Data

a. CENELEC A TEX (KEMA) Intrinsically Safe

T ype

Caution for CENELEC ATEX (KEMA) Intrinsically safe
type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional
code /KS2 for potentially explosive atmospheres:

• No. KEMA 02ATEX1030 X

• Applicable Standard: EN50014:1997, EN50020:1994,
EN50284:1999

• Type of Protection and Marking code: EEx ia IIC T4

• T emperature Class: T4

• Enclosure: IP67

• Process Temperature: 120°C max.

• Ambient Temperature: –40 to 60°C

Note 2. Electrical Data

• In type of explosion protection intrinsic safety EEx ia
IIC only for connection to a certifi ed intrinsically safe
circuit with following maximum values:
Ui = 30 V
Ii = 165 mA
Pi = 0.9 W
Effective internal capacitance; Ci = 22.5 nF
Effective internal inductance; Li = 730 μH

Note 3. Installation

• All wiring shall comply with local installation
requirements. (Refer to the installation diagram)

Note 4. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void KEMA
Intrinsically safe Certifi cation.

Note 5. Special Conditions for Safe Use

• In the case where the enclosure of the Pressure
Transmitter is made of aluminium, if it is mounted in
an area where the use of category 1 G apparatus is
required, it must be installed such, that, even in the
event of rare incidents, ignition sources due to impact
and friction sparks are excluded.

Transmitter

Supply

Safety Barrier

*1

Non-hazardous Location

[Installation Diagram]

Hazardous Location

+
–

+
–

F0209.ai

*1: In any safety barriers used the output current must be

limited by a resistor “R” such that Imaxout-Uz/R.

b. CENELEC A TEX (KEMA) Flameproof Type

Caution for CENELEC ATEX (KEMA) fl ameproof
type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional
code /KF2 for potentially explosive atmospheres:

• No. KEMA 02ATEX2148

• Applicable Standard: EN50014:1997, EN50018:2000

• Type of Protection and Marking Code:
EEx d IIC T6···T4

• T emperature Class: T6, T5, and T4

• Enclosure: IP67

• Maximum Process Temperature: 85°C (T6),
100°C (T5), and 120°C (T4)

• Ambient Temperature: T4 and T6; –40 to 75°C,
T5; –40 to 80°C

Note 2. Electrical Data

• Supply voltage: 42 V dc max.

• Output signal: 4 to 20 mA

Note 3. Installation

• All wiring shall comply with local installation
requirement.

• The cable entry devices shall be of a certifi ed
fl ameproof type, suitable for the conditions of use.

Note 4. Operation

• Keep the “CAUTION” label to the transmitter.
CAUTION: AFTER DE-ENERGIZING, DELA Y 10

MINUTES BEFORE OPENING.
WHEN THE AMBIENT TEMP.70°C, USE HEAT ­RESISTING CABLES90°C.

• T ake care not to generate mechanical sparking when
accessing to the instrument and peripheral devices in
a hazardous location.

Handling Cautions

2

<2. Handling Cautions>

12

IM 01C22A01-01E

Note 5. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void KEMA
Flameproof Certifi cation.

c. CENELEC ATEX (KEMA) Intrinsically Safe

T ype/CENELEC ATEX (KEMA) Flameproof
T ype/CENELEC ATEX Type n

Model EJA-A Series pressure transmitters with
optional code /KU2 can be selected the type of
protection CENELEC ATEX (KEMA) Intrinsically Safe,
Flameproof or CENELEC ATEX T ype n for use in
hazardous locations.

Note 1. For the installation of this transmitter, once a

particular type of protection is selected, any
other type of protection cannot be used.
The installation must be in accordance with the
description about the type of protection in this
user’s manual.

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other
than the selected type of protection when the
transmitter is installed.

● CENELEC A TEX Type of Protection “n”

WARNING

When using a power supply not having a nonincendive
circuit, please pay attention not to ignite in the
surrounding fl ammable atmosphere.
In such a case, we recommend using wiring metal
conduit in order to prevent the ignition.

• Applicable Standard: EN60079-15

• Referential Standard: IEC60079-0,
IEC60079-11

• Type of Protection and Marking Code: Ex nL IIC T4

• Temperature Class: T4

• Enclosure: IP67

• Process Temperature: 120°C max.

• Ambient Temperature: –40 to 60°C

Note 1. Electrical Data

Ui = 30 V
Effective internal capacitance; Ci = 22.5 nF
Effective internal inductance; Li = 730 μH

Note 2. Installation

• All wiring shall comply with local installation
requirements. (refer to the installation diagram)

Note 3. Maintenance and Repair

• The instrument modifi cation or parts replacement by
other than authorized representative of Y okogawa
Electric Corporation is prohibited and will void Type of
Protection “n”.

Power Supply

(Zone 2 only)

Transmitter

Supply

Non-hazardous Location

[Installation Diagram]

Hazardous Location

+
–

+
–

F0210.ai

Ratings of the Power Supply as follows; Maximum Voltage: 30 V

● CENELEC A TEX Type of Protection “Dust”

• Applicable Standard: EN50281-1-1:1997

• Type of Protection and Marking Code: II 1D

• Maximum Surface Temperature:
T65°C (T amb.: 40°C), T85°C (Tamb.: 60°C), and
T105°C (T amb.: 80°C)

Note 1. Installation instructions
The cable entry devices and blanking elements

shall be of a certifi cated type providing a level of
ingress protection of at least IP6x, suitable for
the conditions of use and correctly installed.

(2) Electrical Connection

The type of electrical connection is stamped near the
electrical connection port according to the following
marking.

F0211.ai

Location of the marking

Screw Size Marking

ISO M20 × 1.5 female M

AANSI 1/2 NPT female

(3) Installation

WARNING

• All wiring shall comply with local installation
requirement and local electrical code.

• There is no need of the conduit seal for both of
Division 1 and Division 2 hazardous locations
because this product is sealed at factory.

• In case of ANSI 1/2 NPT plug, ANSI hexagonal
wrench should be applied to screw in.

<2. Handling Cautions>

13

IM 01C22A01-01E

(4) Operation

WARNING

• OPEN CIRCUIT BEFORE REMOVING COVER.
INSTALL IN ACCORDANCE WITH THIS USER’S
MANUAL

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

(5) Maintenance and Repair

WARNING

The instrument modifi cation or parts replacement by
other than authorized Representative of Y okogawa
Electric Corporation is prohibited and will void the
certifi cation.

(6) Name Plate

Name plate

: Refer to USER'S MANUAL

Tag plate for flameproof type

Tag plate for intrinsically safe type

Tag plate for type n protection

Tag plate for flameproof, intrinsically safe type,
type n protection, and Dust

F0212.ai

D

MODEL: Specifi ed model code.
STYLE: Style code.
SUFFIX: Specifi ed suffi x code.
SUPPLY: Supply voltage.
OUTPUT : Output signal.

MWP: Maximum working pressure.
CAL RNG: Specifi ed calibration range.
DISP MODE: Specifi ed display mode.
OUTPUT MODE: Specifi ed output mode.
NO.: Serial number and year of production*

1

.

TOKYO 180-8750 JAP AN:

The manufacturer name and the address*

2

.

*1: The third fi gure from the last shows the last one fi gure of

the year of production. For example, the production year
of the product engraved in “NO.” column on the name
plate as follows is 2001.

12A819857 132

The year 2001

*2: “180-8750” is a zip code which represents the following

address.

2-9-32 Nakacho, Musashino-shi, Tokyo Japan

2.5 EMC Conformity Standards

EN61326-1 Class A, Table 2 (For use in industrial
locations)

EN61326-2-3

CAUTION

This instrument is a Class A product, and it is designed
for use in the industrial environment. Please use this
instrument in the industrial environment only.

NOTE

YOKOGAWA recommends customer to apply the
Metal Conduit Wiring or to use the twisted pair Shield
Cable for signal wiring to conform the requirement
of EMC Regulation, when customer installs the EJA
Series Transmitters to the plant.

2.6 PED (Pressure Equipment
Directive)

(1) General

• EJA series of pressure transmitters are categorized
as pressure accessories under the vessel section
of this directive 97/23/EC, which corresponds to
Article 3, Paragraph 3 of PED, denoted as Sound
Engineering Practice (SEP).

• EJA130A, EJA440A, EJA510A, and EJA530A can
be used above 200 bar and therefore considered as
a part of a pressure retaining vessel where category
lll, Module H applies. These models with option code
/PE3 conform to that category.

Handling Cautions

2

<2. Handling Cautions>

14

IM 01C22A01-01E

(2) Technical Data

• Models without /PE3
Article 3, Paragraph 3 of PED, denoted as Sound
Engineering Practice (SEP) .

• Models with /PE3
Module: H
Type of Equipment: Pressure Accessory - Vessel
Type of Fluid: Liquid and Gas
Group of Fluid: 1 and 2

Model

PS*

1

(bar)

V(L)

PS-V

(bar-L)

Category*

2

EJA110A 160 0.01 1.6

Article 3,
paragraph 3 (SEP)

EJA120A 0.5 0.01 0.005

Article 3,
paragraph 3 (SEP)

EJA130A 420 0.01 4.2

Article 3,
paragraph 3 (SEP)

EJA130A
With code /PE3

420 0.01 4.2 III

EJA310A 160 0.01 1.6

Article 3,
paragraph 3 (SEP)

EJA430A 160 0.01 1.6

Article 3,
paragraph 3 (SEP)

EJA440A 500 0.01 50

Article 3,
paragraph 3 (SEP)

EJA440A
With code /PE3

500 0.01 50 III

EJA510A 500 0.01 50

Article 3,
paragraph 3 (SEP)

EJA510A
With code /PE3

500 0.01 50 III

EJA530A 500 0.01 50

Article 3,
paragraph 3 (SEP)

EJA530A
With code /PE3

500 0.01 50 III

*1: PS is maximum allowable pressure for vessel itself.
*2: Referred to Table 1 covered by ANNEX II of EC Directive

on Pressure Equipment Directive 97/23/EC.

(3) Operation

CAUTION

• The temperature and pressure of fl uid should be
applied under the normal operating condition.

• The ambient temperature should be applied under
the normal operating condition.

• Please pay attention to prevent the excessive
pressure like water hammer, etc. When water
hammer is to be occurred, please take measures
to prevent the pressure from exceeding PS by
setting the safety valve, etc. at the system and the
like.

• When external fi re is to be occurred, please take
safety measures at the device or system not to
infl uence the transmitters.

2.7 Low Voltage Directive

Applicable standard : EN61010-1

(1) Pollution Degree 2

"Pollution degree" describes the degree to which

a solid, liquid, or gas which deteriorates dielectric
strength or surface resistivity is adhering. " 2 " applies
to normal indoor atmosphere. Normally, only non­conductive pollution occurs. Occasionally, however,
temporary conductivity caused by condensation must
be expected.

(2) Installation Category I

"Overvoltage category(Installation category)"

describes a number which defi nes a transient
overvoltage condition. It implies the regulation for
impulse withstand voltage. " I " applies to electrical
equipment which is supplied from the circuit when
appropriate transient overvoltage control means
(interfaces) are provided.

<3. Installation>

15

IM 01C22A01-01E

3. Installation

IMPORTANT

• When welding piping during construction, take
care not to allow welding currents to fl ow through
the transmitter.

• Do not step on this instrument after installation.

• For EJA430A, the atmospheric opening is located
on the low pressure side cover fl ange. For
EJA530A with Measurement span code A, B, and
C, the pipe is attached for the opening. These
openings must not face upward.

F00301.ai

Pipe

(Open to atmosphere)

Zero-adjustment screw

Measurment span code

Figure 3.1 EJA530A Horizontal Mounting

Position

3.1 Mounting

■ The transmitter can be mounted on a nominal
50 mm (2-inch) pipe using the mounting bracket
supplied, as shown in Figure 3.2 and 3.3. Tighten the
(four) bolts that hold the transmitter with a torque of
approximately 39 N·m {4 kgf·m}.

F0302.ai

Mounting bracket

Transmitter
mounting bolt

Figure 3.2 T ransmitter Mounting

(Horizontal Impulse Piping Type)

F0303.ai

Process connector upside Process connector downside

Transmitter
mounting bolt

Mounting
bracket

Figure 3.3 T ransmitter Mounting

(Vertical Impulse Piping Type)

U-bolt (S)

F0304.ai

U-bolt nut (S)

Plate

Adapter

U-bolt nut (L)

Mounting bracket

50 mm(2-inch) pipe

U-bolt (L)

Figure 3.4 EJA510A and EJA530A Mounting

3.2 Mounting the Diaphragm
Seals

IMPORTANT

• Please use a gasket which has a bigger inside
diameter than that of gasket facing (ød) on
diaphragm seal. In case a gasket which has a
smaller inside diameter than that of gasket facing
is used, it may cause an error as the gasket
prevents diaphragm from working correctly

• During the diaphragm seal installation, ensure as
far as possible that no seal liquid head is applied to
the diaphragm seals.

• Exercise care so as not to damage diaphragm
surfaces. Since the diaphragm protrudes approx.
1mm from the fl ange surface, placing the
diaphragm seals with their diaphragm surfaces
facing downward may damage the diaphragm
surfaces.

• Do not sharply bend or twist capillary tube or apply
excessive stress to them.

• Never loosen the four screws securing the cover
fl ange or the screws at the joints between the
capillary tube and cover fl anges (if the seal liquid
leaks, the transmitter cannot be used).

Installation

3

<3. Installation>

16

IM 01C22A01-01E

3.2.1 EJA210A and EJA220A

The transmitter is mounted on a process using its
high pressure side fl ange as shown in Figure 3.5. The
customer should prepare the mating fl ange, gasket, stud
bolts and nuts.

Gasket

Stud bolt

Nut

F0305.ai

Figure 3.5 EJA210A and EJA220A Mounting

3.2.2 EJA118 and EJA438

Mount the diaphragm seals using the fl anges as shown
in Figure 3.6. The customer should prepare the mating
fl ange, gasket, bolts and nuts.

Nut

Flange

Diaphragm

ød

Gasket

F0306.ai

Bolt

The product is
shipped with these
parts assembled.

Correctly install the diaphragm
seals on the high and low pressure
sides of the process, checking the
label on each seal.

Figure 3.6 Mounting the Diaphragm Seals

3.3 Diaphragm Seals Installation
Consideration

IMPORTANT

• When measuring the liquid level of the tank, the
minimum liquid level (zero point) must be set to a
level at least 50 mm above the center of the high
pressure side diaphragm seal (see Figure 3.2.3).

• Correctly install the diaphragm seals on the high
and low pressure sides of the process, checking
the label on each seal.

• To avoid measuring error duets temperature
difference between the two diaphragm seals,
capillary tube must be bound together. The
capillary tube must be securely fi xed to the tank
wall to prevent movement by wind or vibration.
If the capillary tube is too long, loosely coil the
excess and secure using suitable clamps.

F0307.ai

Low
pressure
side

High
pressure
side

50mm minimum

Minimum
liquid level

Install the sealed diaphragm
so that the shank positions
downward.

IMPORTANT

The transmitter should be installed as low
as possible below the position where the
high pressure side diaphragm seal is
installed.

Figure 3.7 Installing the Diaphragm Seals to a

Tank

<3. Installation>

17

IM 01C22A01-01E

IMPORTANT

The transmitter should be installed below the high
pressure (HP) process connection to ensure a
positive head pressure of fi ll fl uid. The recommended
height between the HP process connection and the
transmitter is show in the following table. Pay special
attention to vacuum applications.

Model Height (h)

EJA118

600 mm
EJA438W Wetted parts material code S,
T , U, EJA438N

700 mm
EJA438W Wetted parts material code H 1,300 mm

Wetted parts material code

If it can not be installed below the HP process
connection with the recommended height above,
please use the equation below:

h= ×7.5×10–3[mm]

(P–P0)×dHg

ds

h: Vertical height between the HP process connection

and the transmitter (mm)
h≤0: Install the transmitter at least h (mm) below

the HP process connection

h>0: Install the transmitter at most h (mm) above

the HP process connection
P: Pressure in the tank (Pa abs)
P0: Minimum working pressure limit of the transmitter

(ambient temperature range: -10 to 50°C)
EJA118

Wetted parts material
code

STHU

P0: Minimum working
pressure limit

3178 3596 6074 4711

EJA438



Wetted parts material
code

ST, UH

P0: Minimum working
pressure limit

5254 6980 13019

ds: Specifi c gravity of fi ll fl uid (at 25°C)

Fill fl uid code A B C, E D
ds: Specifi c gravity

1.07 0.94 1.09

1.90 to

1.92

dHg: Specifi c gravity of the Mercury 13.6 (at 25°C)

Wetted parts material code

Fill fluid code

F0308.ai

P

h

Low
pressure side

0

High
pressure side

(+)

(–)

Figure 3.8 Example of Installation to T ank

(Caution on Installation)

3.4 Affi xing the T efl on Film

IMPORTANT

The FEP Teflon option includes a teflon film and
fluorinated oil. Before mounting the transmitter to the
process fl ange, affi x the tefl on fi lm as follows:

1) Position the diaphragm so that the diaphragm is in
an upward position.

2) Pour the fl uorinated oil on the diaphragm and
gasket area covering it completely and evenly. Be
careful not to scratch the diaphragm or change the
its shape.

3) Affi x the tefl on fi lm over the diaphragm and gasket
area.

4) Next, carefully inspect the cover and try to identify
any entrapped air between the diaphragm and
the tefl on fi lm. The air must be removed to ensure
accuracy. If air pockets are present, use your
fi ngers to remove the air by starting at the center of
the diaphragm and work your way out.

5) Place the gasket with the tefl on fi lm and affi x to the
process fl ange.

F0309.ai

EJA210A F9347YD
EJA118W
EJA438W

F9347YA

2B
(50A)

F9347XA3B(80A)

Teflon film
PART No.

Diaphragm

Fluorinated oil

[PART No. : F9145YN]

Gasket area

Figure 3.9 Affi xing the Tefl on Film

Installation

3

<3. Installation>

18

IM 01C22A01-01E

3.5 Rotating T ransmitter Section

The transmitter section can be rotated in 90° segments.

1) Remove the two Allen screws that fasten the
transmitter section and capsule assembly, using the
Allen wrench. Also, remove the pipe for EJA530A
with Measurement span code A, B, and C, using the
slotted screwdriver.

2) Rotate the transmitter section slowly in 90° segments.

3) Tighten the two Allen screws to a torque of 5 N·m.

IMPORTANT

Do not rotate the transmitter section more than 180°.

F0310.ai

Pressure-detector section

Transmitter section

Rotate 90o or 180o segments

Conduit connection

Figure 3.10 Rotating Transmitter Section

3.6 Changing the Direction of

Integral Indicator

An integral indicator can be rotated as shown in Figure

3.11.

IMPORTANT

The terminal box cover is locked by an Allen head
bolt (a shrouding bolt) on CENELEC and IECEx
fl ameproof type transmitters. When the shrouding bolt
is driven clockwise by an Allen wrench, it is going in
and cover lock is released, and then the cover can be
opened by hand.
When a cover is closed it should be locked by a
shrouding bolt without fail. Tighten the shrouding bolt
to a torque of 0.7 N·m.

1) Remove the cover.

2) Supporting the integral indicator by hand, loosen its
two mounting screws.

3) Dismount the LCD board assembly from the CPU
assembly. When doing this, carefully pull the LCD
board assembly straight forward so as not to damage
the connector pins between it and the CPU assembly.

4) After rotating the LCD, align both the LCD board
assembly and CPU assembly connectors and engage
them.

5) Insert and tighten the two mounting screws.

6) Replace the cover.

90°

90°

F0311.ai

CPU assembly

Mounting screw

LCD board assembly

Shrouding bolt

Figure 3.11 Rotating Integral Indicator

<4. Installing Impulse Piping>

19

IM 01C22A01-01E

4. Installing Impulse Piping

4.1 Impulse Piping Installation
Precautions

The impulse piping that connects the process outputs
to the transmitter must convey the process pressure
accurately. If, for example, gas collects in a liquid fi lled
impulse piping, or the drain of a gas-fi lled impulse piping
becomes plugged, the impulse piping will not convey
the pressure accurately. Since this will cause errors
in the measurement output, select the proper piping
method for the process fl uid (gas, liquid, or steam). Pay
careful attention to the following points when routing the
impulse piping and connecting the impulse piping to the
transmitter.

4.1.1 Connecting Impulse Piping to the
Transmitter

(1) Check the High and Low Pressure

Connections on the Transmitter (Figure 4.1)

Symbols “H” and “L” are shown on a capsule assembly to
indicate high and low pressure side. Connect the impulse
piping to the “H” side, and the low impulse piping to the
“L” side.

F0401.ai

Pressure

connection

“H” and “L” are shown

Process connection
Process connector

Bolt

Figure 4.1 “H” and “L” Symbols on a Capsule

Assembly

(2) Changing the Process Connector Piping

Connections

The impulse piping connection distances can be changed
between 51 mm, 54 mm and 57 mm by changing the
orientation of the process connectors.
This is convenient for aligning the impulse piping with the
process connectors when connecting the piping.

57 mm 54 mm 51 mm

F0402.ai

Figure 4.2 Process Connector Impulse Piping

Connection Distances

(3) Tightening the Process Connector

Mounting Bolts

After connecting the impulse piping, tighten the process
connector mounting bolts uniformly.

(4) Connecting the Transmitter and 3-V alve

Manifold (EJA110A)

A 3-valve manifold consists of two stop valves to block
process pressure and an equalizing valve to equalize
the pressures on the high and low pressure sides of the
transmitter. Such a manifold makes it easier to disconnect
the transmitter from the impulse piping, and is convenient
when adjusting the transmitter zero point.

There are two types of 3-valve manifold: the pipe
mounting type and the direct-mounting type; care should
be taken with respect to the following points when
connecting the manifold to the transmitter.

 Pipe-Mounting Type 3-V alve Manifold

F0403.ai

Nipple

Nipple
Process

connector

Ball head
lock nut

Pipe

Ball head
lock nut

Process connector
bolts

50 mm(2-inch) pipe

Pipes

3-valve
manifold

Impulse piping
Vent plug

(optional)
Stop valve

(low pressure side)
Equalizing valve

(balancing)
Stop valve

(high pressure side)

Figure 4.3 3-V alve Manifold (Pipe-Mounting T ype)

1) Screw nipples into the connection ports on the
transmitter side of the 3-valve manifold, and into
the impulse piping connecting ports on the process
connectors. (T o maintain proper sealing, wind sealing
tape around the nipple threads.)

2) Mount the 3-valve manifold on the 50 mm (2-inch)
pipe by fastening a U-bolt to its mounting bracket.
Tighten the U-bolt nuts only lightly at this time.

3) Install the pipe assemblies between the 3-valve
manifold and the process connectors and lightly
tighten the ball head lock nuts. (The ball-shaped ends
of the pipes must be handled carefully, since they will
not seal properly if the ball surface is scratched or
otherwise damaged.)

Installing Impulse Piping

4

<4. Installing Impulse Piping>

20

IM 01C22A01-01E

4) Now tighten the nuts and bolts securely in the
following sequence:
Process connector bolts → transmitter-end ball head
lock nuts → 3-valve manifold ball head lock nuts →
3-valve manifold mounting bracket U-bolt nuts

 Direct-Mounting Type 3-V alve Manifold

1) Mount the 3-valve manifold on the transmitter. (When
mounting, use the two gaskets and the four bolts
provided with the 3-valve manifold. Tighten the bolts
evenly.)

2) Mount the process connectors and gaskets on the top
of the 3-valve manifold (the side on which the impulse
piping will be connected.)

Bolts

Process

connector

Gasket

Gasket

Process

connector

Bolts

Stop valve

Stop valve

3-valve manifold

3-valve

manifold

Equalizing valve

Equalizing

valve

Stop valve

Impulse

piping

Impulse

piping

Stop valve

F0404.ai

Figure 4.4 3-Valve Manifold

(Direct-Mounting Type)

4.1.2 Routing the Impulse Piping

(1) Process Pressure Tap Angles

If condensate, gas, sediment or other extraneous
material in the process piping gets into the impulse
piping, pressure measurement errors may result. To
prevent such problems, the process pressure taps must
be angled as shown in Figure 4.5 according to the kind of
fl uid being measured.

NOTE

• If the process fl uid is a gas, the taps must be
vertical or within 45° either side of vertical.

• If the process fl uid is a liquid, the taps must be
horizontal or below horizontal, but not more than
45° below horizontal.

• If the process fl uid is steam or other condensing
vapor, the taps must be horizontal or above
horizontal, but not more than 45° above horizontal.

[Gas]

Pressure

taps

Process

piping

[Steam][Liquid]

45°

45°

45° 45°

45°

45°

F0405.ai

Figure 4.5 Process Pressure T ap Angle

(For Horizontal Piping)

(2) Position of Process Pressure Taps and

Transmitter

If condensate (or gas) accumulates in the impulse piping,
it should be removed periodically by opening the drain
(or vent) plugs. However, this will generate a transient
disturbance in the pressure measurement, and therefore
it is necessary to position the taps and route the impulse
piping so that any extraneous liquid or gas generated in
the leadlines returns naturally to the process piping.

• If the process fl uid is a gas, then as a rule the
transmitter must be located higher than the process
pressure taps.

• If the process fl uid is a liquid or steam, then as a
rule the transmitter must be located lower than the
process pressure taps.

(3) Impulse Piping Slope

The impulse piping must be routed with only an upward or
downward slope. Even for horizontal routing, the impulse
piping should have a slope of at least 1/10 to prevent
condensate (or gases) from accumulating in the pipes.

(4) Temperature Difference Between Impulse

Piping

If there is a temperature difference between the high and
low impulse piping, the density difference of the fl uids
in the two lines will cause an error in the measurement
pressure. When measuring fl ow, impulse piping must be
routed together so that there is no temperature difference
between them.

<4. Installing Impulse Piping>

21

IM 01C22A01-01E

(5) Condensate Pots for Steam Flow

Measurement

If the liquid in the impulse piping repeatedly condenses
or vaporizes as a result of changes in the ambient or
process temperature, this will cause a difference in the
fl uid head between the high pressure and low pressure
sides. To prevent measurement errors due to these head
differences, condensate pots are used when measuring
steam fl ow.

(6) Preventing Wind Speed Effects in Very Low

Differential Pressure Measurement

IMPORTANT

When using a differential pressure transmitter to
measure very low pressures (draft pressure), the low
pressure connection port is left open to atmospheric
pressure (the reference pressure).
Any wind around the differential pressure transmitter
will therefore cause errors in the measurement. To
prevent this, it will be necessary either to enclose the
transmitter in a box, or to connect a impulse piping to
the low pressure side and insert its end into a wind
excluding pot (cylindrical with a base plate).

(7) Preventing Freezing

If there is any risk that the process fl uid in the impulse
piping or transmitter could freeze, use a steam jacket or
heater to maintain the temperature of the fl uid.

4.2 Impulse Piping Connection
Examples

Figure 4.6, 4.7, and 4.8 shows examples of typical
impulse piping connections. Before connecting the
transmitter to the process, study the transmitter
installation location, the process piping layout, and
the characteristics of the process fl uid (corrosiveness,
toxicity, fl ammability , etc.), in order to make appropriate
changes and additions to the connection confi gurations.

Note the following points when referring to these piping
examples.

• If the impulse piping is long, bracing or supports
should be provided to prevent vibration.

• The impulse piping material used must be compatible
with the process pressure, temperature, and other
conditions.

• A variety of process pressure tap valves (main valves)
are available according to the type of connection
(fl anged, screwed, welded), construction (globe, gate,
or ball valve), temperature and pressure. Select the
type of valve most appropriate for the application.

Tee

3-valve

manifold

Drain valve

Orifice

Drain plug

Tap valve

Union

or flange

Liguid

Gas

Condensate pot

Steam

F0406.ai

Figure 4.6 Impulse Piping Connection Examples

(EJA110A)

Pipe (opened to
atmosphere at low
pressure side)

Open Tank

Closed Tank

Tap valve

Union or flange

Vent plug

Tee

Drain valve

Drain plug

F0407.ai

Figure 4.7 Impulse Piping Connection Examples

(EJA210A and EJA220A)

F0408.ai

Liquid

Gas Steam

Union or flange

Tee

Tee

Drain plug

Drain valve

Drain valve
Drain plug

Union or flange

Union or

flange

Union or flange

Tap valve

Tap valve

Tee

Drain valve

Drain plug

Tap valve

Figure 4.8 Impulse Piping Connection Examples

(EJA310A, EJA430A, and EJA440A)

Installing Impulse Piping

4

<4. Installing Impulse Piping>

22

IM 01C22A01-01E

4.3 Process Piping Installation
Precautions

4.3.1 Connecting Process Piping to the
Transmitter

(1) Confi rming the Process Fluid Flow

Direction

The mark “ ” on the manifold indicates the direction in
which the process fl uid is fl owed (from right to left).
When connecting the process piping to the process
connector, confi rm the process fl uid fl ow direction.

F0409.ai

Flow direction (from right to left)

Manifold

Orifice name plate

Process connector
(low pressure side)

Process connector
(high pressure side)

Process connection
(outflow side)

Process connection
(inflow side)

Figure 4.9 Manifold and Flow Direction Indication

(2) Tightening the Process Connector

Mounting Bolts

The transmitter is shipped with the process connector
mounting bolts only loosely tightened. After connecting
the process piping, tighten these bolts uniformly to
prevent leaks with a torque of 39 to 49 N·m {4 to 5 kgf·m}.

(3) Removing the Process Connector Port

Dustproof Cap

The process connector port threads are covered with a
plastic cap to exclude dust. This cap must be removed
before connecting the piping. (Be careful not to damage
the threads when removing this cap. Never insert a
screwdriver or other tool between the cap and port
threads to remove the cap.)

4.3.2 Routing the Process Piping

(1) Relationship between Process Fluid

and Manifold Locations (For the vertical
impulse piping type)

If condensate (or gas) generated in the process piping
were allowed to accumulate, then it would be necessary
to remove it periodically by opening the drain (or
vent) plug. However, this would generate a transient
disturbance in the pressure measurement. Therefore, the
process piping must be routed so that any condensate (or
gas) generated in the process piping will not accumulate
in the pressure-sensing assembly of the transmitter.

NOTE

• If the process fl uid is a gas, then as a rule the
manifold must be located at the downside of the
pressure-sensing assembly.

• If the process fl uid is a liquid, then as a rule the
manifold must be located at the upside of the
pressure-sensing assembly.

(2) Pipe Size for Process Piping

Use a 15 mm (1/2-inch) pipe for process piping
connection to the process connector.

(3) Preventing Freezing

If there is any risk that the process fl uid in the transmitter
pressure-sensing assembly could freeze, use a steam
jacket or heater to maintain the temperature of the fl uid.

(4) Process Piping Connection Examples

Figure 4.10 shows examples of typical process piping
connections. Before connecting the transmitter to the
process, study the transmitter installation location, the
process piping layout, and the characteristics of the
process fl uid (corrosiveness, toxicity , fl ammability, etc.), in
order to make appropriate changes and additions to the
connection confi gurations.

Note the following points when referring to these piping
examples.

• The process piping material used must be compatible
with the process pressure, temperature, and other
conditions.

• A variety of process piping-mounted stop valves are
available according to the type of connection (fl anged,
screwed, welded), construction (globe, gate, or ball
valve), temperature and pressure.
Select the type of valve most appropriate for the
application.

Gas flow measurement

Liquid flow measurement

Union or flange

Union or flange

Stop valve

Stop valve

Manifold

Manifold

Process piping

Process piping

F0410.ai

Figure 4.10 Process Piping Connection Examples

(EJA115)

<5. Wiring>

23

IM 01C22A01-01E

5. Wiring

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA
communication types, please refer to manuals in the
attached CD-ROM.

5.1 Wiring Precautions

IMPORTANT

• Lay wiring as far as possible from electrical noise
sources such as large capacity transformers,
motors, and power supplies.

• Remove electrical connection dust cap before
wiring.

• All threaded parts must be treated with
waterproofi ng sealant. (A non-hardening silicone
group sealant is recommended.)

• To prevent noise pickup, do not pass signal and
power cables through the same ducts.

• Explosion-protected instruments must be wired
in accordance with specifi c requirements (and,
in certain countries, legal regulations) in order
to preserve the effectiveness of their explosion­protected features.

• The terminal box cover is locked by an Allen head
bolt (a shrouding bolt) on CENELEC and IECEx
fl ameproof type transmitters. When the shrouding
bolt is driven clockwise by an Allen wrench, it is
going in and cover lock is released, and then the
cover can be opened by hand.
When a cover is closed it should be locked by a
shrouding bolt without fail. Tighten the shrouding
bolt to a torque of 0.7 N·m.

Shrouding Bolt

Shrouding Bolt

F0501.ai

5.2 Connections of External
Wiring to T erminal Box

5.2.1 Power Supply Wiring Connection

Connect the power supply wiring to the SUPPLY + and
– terminals.

Power supply

–

+

Transmitter terminal box

F0502.ai

Figure 5.1 Power Supply Wiring Connection

5.2.2 Handheld Terminal Connection

Connect the handheld terminal to the SUPPLY + and
– terminals (Use hooks). Communication line requires a
reception resistor of 250 to 600Ω in series.

Transmitter terminal box

BT200 etc.

F0503.ai

Power supply

–

+

Ignore the polarity
since it is AC-coupled
to the terminal box.

250 to 600 Ω

Figure 5.2 Handheld T erminal Connection

5.3 Wiring

CAUTION

For the intrinsically safe equipment and fl ameproof
equipment, wiring materials and wiring work for these
equipment including peripherals are strictly restricted.
Users absolutely must read “Installation and Operating
Precautions for TIIS Intrinsically Safe Equipment”
and “Installation and Operating Precautions for TIIS
Flameproof Equipment” at the end of this manual prior
to the work.

Wiring

5

<5. Wiring>

24

IM 01C22A01-01E

5.3.1 Loop Confi guration

Since the DPharp uses a two-wire transmission system,
signal wiring is also used as power wiring.

DC power is required for the transmitter loop. The
transmitter and distributor are connected as shown below.

For details of the power supply voltage and load
resistance, see Section 5.6.

(1) General-use Type and Flameproof Type

Hazardous Location Non-hazardous Location
Transmitter terminal box

Distributor
(Power supply unit)

Receiver
instrument

F0504.ai

–

+

Figure 5.3 Connection between T ransmitter and

Distributor

(2) Intrinsically Safe Type

For intrinsically safe type, a safety barrier must be
included in the loop.

Hazardous Location Non-hazardous Location
Transmitter terminal box

Distributor
(Power supply unit)

Receiver
instrument

Safety barrier

F0505.ai

–

+

Figure 5.4 Connection between T ransmitter and

Distributor

5.3.2 Wiring Installation

(1) General-use Type and Intrinsically Safe

T ype

Make cable wiring using metallic conduit or waterproof
glands.

• Apply a non-hardening sealant to the terminal box
connection port and to the threads on the fl exible
metal conduit for waterproofi ng.

F0506.ai

Flexible metal conduit

Wiring metal
conduit

Tee

Drain plug

Apply a non-hardening
sealant to the threads for
waterproofing.

Figure 5.5 T ypical Wiring Using Flexible Metal

Conduit

(2) Flameproof Type

Wire cables through a fl ameproof packing adapter, or
using a fl ameproof metal conduit.

 Wiring cable through fl ameproof packing adapter.

• Apply a non-hardening sealant to the terminal box
connection port and to the threads on the fl ameproof
packing adapter for waterproofi ng.

Flameproof packing
adapter

Flexible metal conduit

Wiring metal
conduit

Tee

Drain plug

Apply a non-hardening
sealant to the threads for
waterproofing.

F0507.ai

Figure 5.6 T ypical Cable Wiring Using Flameproof

Packing Adapter

• Measure the cable outer diameter in two directions to
within 1 mm.

• Calculate the average of the two diameters, and use
packing with an internal diameter nearest to this value
(see T able 5.1).

Table 5.1 Flameproof Packings and Applicable

Cable Outer Diameters

Optional

Code

Wiring Port

Thread

Diameter

Applicable

Cable OD

(mm)

Identifying

Mark

Part

Number

G11

G 1/2

8 to 10

10.1 to 121616

8-10

10-12

G9601AM

G12

• Mounting fl ameproof packing adapter body to conduit
connection (see Figure 5.7)

1) Screw the fl ameproof packing adapter into the

terminal box until the O-ring touches the wiring port
(at least 6 full turns), and fi rmly tighten the lock nut.

<5. Wiring>

25

IM 01C22A01-01E

2) Insert the cable through the union cover, the union
coupling, the clamp nut, the clamp ring, the gland,
the washer, the rubber packing, and the packing
box, in that order.

3) Insert the end of the cable into the terminal box.

4) Tighten the union cover to grip the cable. When
tightening the union cover, tighten approximately
one turn past the point where the cable will no
longer move up and down.
Proper tightening is important. If it is too tight, a
circuit break in the cable may occur; if not tight
enough, the fl ameproof effectiveness will be
compromised.

5) Fasten the cable by tightening the clamp nut.

6) Tighten the lock nut on the union cover.

7) Connect the cable wires to each terminal.

O-ring

Adapter body

Lock nut

Wrench

Packing box

Rubber packing

Washer

Gland

Clamp ring

Clamp nut
Union coupling
Lock nut
Wrench
Union cover
Cable

Apply a non-hardnening
sealant to the threads for
waterproofing.

F0508.ai

Figure 5.7 Installing Flameproof Packing Adapter

 Flameproof metal conduit wiring

• A seal fi tting must be installed near the terminal box
connection port for a sealed construction.

• Apply a non-hardening sealant to the threads of the
terminal box connection port, fl exible metal conduit
and seal fi tting for waterproofi ng.

F0509.EPS

Non-hazardous area

Hazardous area
Flameproof

heavy-gauge
steel conduit

Tee

Drain plug

Seal fitting

Gas sealing device

Flameproof flexible
metal conduit

Apply a non-hardening
sealant to the threads
of these fittings for
waterproofing

After wiring, impregnate the fitting
with a compound to seal tubing.

Figure 5.8 T ypical Wiring Using Flameproof Metal

Conduit

5.4 Grounding

Grounding is always required for the proper operation of
transmitters. Follow the domestic electrical requirements
as regulated in each country. For a transmitter with builtin
lightning protector, grounding should satisfy ground
resistance of 10Ω or less.

Ground terminals are located on the inside and outside of
the terminal box. Either of these terminals may be used.

WARNING

For TIIS fl ameproof type and intrinsically safe,
grounding should satisfy Class D requirements
(grounding resistance, 100Ω or less).

Ground terminal
(Inside)

Ground terminal
(Outside)

Transmitter terminal box

F0610.ai

Figure 5.9 Ground T erminals

5.5 Power Supply V oltage and
Load Resistance

When confi guring the loop, make sure that the external
load resistance is within the range in the fi gure below .

(Note) In case of an intrinsically safe transmitter, external load

resistance includes safety barrier resistance.

600

250

0 10.5 16.4 24.7 42

External

load

resistance

R (Ω)

Power supply voltage E (V DC)

F0511.ai

Communication

applicable range

BRAIN and HART

R=

E–10.5

0.0236

Figure 5.10 Relationship between Power Supply

Voltage and External Load Resistance

Wiring

5

<6. Operation>

26

IM 01C22A01-01E

6. Operation

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA
communication types and for the transmitter operating
confi rmation and zeroing by any communication
method, refer to manuals in the attached CD-ROM for
further information.

6.1 Preparation for Starting
Operation

 Confi rming that Transmitter is Operating

Properly

On the integral indicator

• If the wiring system is faulty , the display stays blank.

• If the transmitter is faulty , an error code will appear on
the display according to the nature of the error.

Self-diagnostic error on the integral indicator
(Faulty transmitter)

F0601.ai

NOTE

If any of the error indications above appears on the
display of the integral indicator, refer to Chapter 7 for
corrective action.

 Verify and Change Transmitter

Parameter Setting and Values

The following parameters are the minimum settings
required for operation.

• Measuring range

• Output/integral indicator mode

• Operation mode

 Output Status Setting at CPU Failure

Set the burn-out direction as shown in the fi gures below .
The direction is set to the H side for delivery unless option
code /C1 is specifi ed in the order. For option code /F1, the
output signal for down-scale is -2.5%, 3.6 mA DC or less.

● BRAIN and HART except option code /F1

Setting pin (CN4)

CPU assembly

HL

HL

Burn-Out

Direction

HIGH

Output at
Burn-Out

Setting Pin (CN4)

Position

-5% or lower

110% or higher

LOW

F0602.ai

Figure 6.1 Burn-out Direction Setting Pin

● HART with option code /F1

CPU assembly

Slide switch

Burn-out direction switch

Write protection switch

LH
YN

Write Protection

Switch Position

L H

YN

L H

YN

Write Protection

Hardware write protection switch

YESNO

HIGH LOW

Burnout Direction

Switch Position

LH

Y

N

LH

Y

N

Burn-out direction switch

Burn-out Direction

F0603.ai

Figure 6.2 Burn-out Direction Slide Switch

<6. Operation>

27

IM 01C22A01-01E

6.2 Zero Point Adjustment

Adjust the zero point after operating preparation is
completed.

IMPORTANT

Do not turn off the power to the transmitter
immediately after a zero adjustment. Powering off
within 30 seconds after a zero adjustment will return
the adjustment back to the previous settings.

 Using the Transmitter Zero-adjustment

Screw

Use a slotted screwdriver to turn the zero-adjustment
screw. T urn the screw clockwise to increase the output or
counterclockwise to decrease the output. The zero point
adjustment can be made with a resolution of 0.01% of
the setting range. Since the degree of zero adjustments
varies with the screw turning speed, turn the screw slowly
for fi ne adjustment and quickly for coarse adjustment.

F0604.ai

Zero-adjustment screw

Zero-adjustment Screw

Operation

6

<7. Errors and Countermeasures>

28

IM 01C22A01-01E

7. Errors and Countermeasures

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA communication types, please refer to manuals in the attached CD-ROM.

The table below shows a summary of error messages for BRAIN and HART protocols.

Table 7.1 Error Message Summary

Integral

Indicator

Display

Description Cause Output Operation during Error Countermeasure

None GOOD

--- ERROR
Er. 01 CAP MODULE FAULT Capsule problem.*

1

Outputs the signal according to
status of a burnout direction pin
or switch (the signal can be set as
“hold” for BRAIN protocol).

Replace the capsule when
error keeps appearing even
after restart.*

2

Er. 02 AMP MODULE FAULT Amplifi er problem. Outputs the signal (Hold, Outputs

the signal according to status of
a burnout direction pin or switch
(the signal can be set as “hold” for
BRAIN protocol).

Replace amplifi er.

Er. 03 OUT OF RANGE Input is outside

measurement range limit
of capsule.

Outputs high range limit value or
low range limit value.

Check input.

Er. 04 OUT OF SP RANGE Static pressure exceeds

specifi ed range.*

3

Displays present output. Check line pressure (static

pressure).

Er. 05 OVER TEMP (CAP) Capsule temperature

is outside range (-50 to
130°C).

Displays present output. Use heat insulation or make

lagging to keep temperature
within range.

Er. 06 OVER TEMP (AMP) Amplifi er temperature

is outside range (-50 to
95°C).

Displays present output. Use heat insulation or make

lagging to keep temperature
within range.

Er. 07 OVER OUTPUT Output is outside high or

low range limit value.

Outputs high or low range limit
value.

Check input and range
setting, and change them as
needed.

Er. 08 OVER DISPLA Y Displayed value is

outside high or low range
limit value.

Displays high or low range limit
value.

Check input and display
conditions and modify them
as needed.

Er. 09 ILLEGAL LRV LRV is outside setting

range.

Holds output immediately before
error occurrence.

Check LRV and modify as
needed.

Er. 10 ILLEGAL URV URV is outside setting

range.

Holds output immediately before
error occurrence.

Check URV and modify as
needed.

Er. 1 1 ILLEGAL SPAN SPAN is outside setting

range.

Holds output immediately before
error occurrence.

Check SPAN and change as
needed.

Er. 12 ZERO ADJ OVER Zero adjustment is too

large.

Displays present output. Readjust zero point.

*1: This error code appears at a capsule problem or when an illegal overpressure is applied to the pressure sensor.
*2: If the normal pressure is regained, the Er.01 will disappear according to the setting of the parameter of E50：AUTO RECOVER.

When the E50：AUTO RECOVER is set to ON, the Er.01 will disappear automatically. The default setting for this parameter is
ON. When the E50：AUTO RECOVER is set to OFF, restart the transmitter to cancel Er.01. If no error code appears then, perform
necessary adjustments such as zero-adjustment to continue the operation. If the error code still appears, replace the capsule
assembly.

*3: For Model EJA120A, static pressure cannot be measured. The display is always 0 MPa, but this is not a measured value.

<8. Parameter Summary>

29

IM 01C22A01-01E

8. Parameter Summary

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA
communication types, please refer to manuals in the
attached CD-ROM.

IMPORTANT

If the transmitter is turned off within 30 seconds after
parameters have been set, the set data will not be
stored and the terminal returns to previous settings.

 HART Communication Menu Tree

1 DEVICE SETUP
2 Pres
3 A01 Out
4 LRV
5 URV

Online Menu

1 PROCESS
VARIABLES

2 DIAGNOSTICS
AND SERVICE

3 BASIC SETUP

4 DETAILED
SETUP

5 REVIEW

1 Pressure
2 Percent Range
3 Analog Output
4 Sensor Temperature
5 Static Pressure
6 Engineering Unit
7 Engineering Display

1 TEST/STATUS

2 Loop Test

3 CALIBRATION

1 Self Test
2 Status

1 Keypad Input

2 Wrt protect menu

Hot Key 1 LRV

2 URV
3 Unit
4 LSL
5 USL
6 Min Span

1 Tag
2 Unit
3 RERANGE

4 DEVICE INFO
5 Transfer Function
6 Damp
7 Low Cut
8 Cut Mode

1 Keypad Input
2 Apply Values

1 Date
2 Descriptor
3 Message
4 Write Protect

1 SENSORS

2 SIGNAL
CONDITION

3 OUTPUT
CONDITION

4 DISPLAY
CONDITION

5 DEVICE
INFORMATION

1 Pressure Sensor

2 Temperature
Sensor

3 Static Pressure
Sensor

1 Percent Range
2 Pressure
3 Unit
4 Sensor Trim

1 Zero Trim
2 Pressure
3 Lower Sensor Trim
4 Upper Sensor Trim
5 Sensor Trim Point
6 Clear snsr trim

1 Snsr temp
2 Amp temp
3 Sensor temp Unit

1 Static Pressure
2 Static Pressure Unit

1 PROCESS
VARIABLES

2 RERANGE
3 Unit
4 Transfer Function
5 Damp
6 Low Cut
7 Cut Mode
8 Bi-dir Mode
9 H2O Unit Select

1 PROCESS
VARIABLES

2 ANALOG
OUTPUT

3 Analog Output
Alarm

4 HART OUTPUT

1 Display Mode
2 Display Function
3 Engineering
Display Range

1 Field Device Info
2 Sensor Info
3 Self Test

1 Engineering Unit
2 Engineering Display LRV
3 Engineering Display URV
4 Engineering Display Point

1 Pressure
2 Percent Range
3 Analog Output
4 Sensor Temperature
5 Static Pressure
6 Engineering Unit
7 Engineering Display

1 Loop Test
2 Digital-to-Analog Trim
3 Scaled D/A Trim
4 Auto recover
5 AO lower limit %
6 AO upper limit %

1 Poll Address
2 Number of Request Preambles
3 Burst Mode
4 Burst Option

1 Pressure
2 Percent Range
3 Sensor Temperature

1 Keypad Input
2 Apply Values

1 RERANGE

2 TRIM ANALOG
OUTPUT

3 SENSOR TRIM

1 Keypad Input
2 Apply Values

1 Digital-to-Analog Trim
2 Scaled Digital-to-Analog Trim

1 Zero Trim
2 Pressure
3 Lower Sensor Trim
4 Upper Sensor Trim
5 Sensor Trim Points
6 Clear snsr trim

F0801.ai

1 Write protect
2 Enable wrt 10 min
3 New password
4 Software seal

Errors and Countermeasures

7

Parameter Summary

8

<8. Parameter Summary>

30

IM 01C22A01-01E

 BRAIN Communication Parameter List

Instruments to which applicable:
F: Differential pressure transmitters:EJA110A, EJA120A, EJA130A, EJA118W, EJA118N, EJA118Y, and EJA115

P: Pressure transmitters: EJA310A, EJA430A, EJA440A, EJA510A, EJA530A, EJA438W, and EJA438N
L: Liquid level transmitters: EJA210A and EJA220A

No. Item Description

Rewrita-

bility

Remarks Default Value

Applicability

FPL

01 MODEL Model+capsule type —



02 TAG NO. T ag number — 16 alphanumerics



03 SELF CHECK Self-diagnostic result — GOOD/ERROR



A DISPLAY Measured data display — Menu name



A10 OUTPUT (%) Output (in %) — –5 to 110%*

3



A11 ENGR. OUTPUT Output (in engineering units) — –19999 to 19999



A20 AMP TEMP Amplifi er temperature — Unit specifi ed in D30



A21 CAPSULE TEMP Capsule temperature — Unit specifi ed in D30



A30 STA TIC PRESS Static pressure — Unit specifi ed in D31*

1



—



A40 INPUT Input (indicated as the

value after zeroing)

— –32000 to 32000



A60 SELF CHECK Self-diagnostic

messages

— GOOD/ERROR, CAP MODULE FAUL T, AMP

MODULE FAUL T, OUT OF RANGE, OUT OF SP
RANGE*

1

, OVER TEMP (CAP),OVER TEMP
(AMP), OVER OUTPUT , OVER DISPLAY, ILLEGAL
LRV , ILLEGAL HRV, ILLEGAL SPAN, and ZERO
ADJ OVER



B SENSOR TYPE Sensor type — Menu name



B10 MODEL Model+span — 16 uppercase alphanumerics



B11 STYLE NO. Style number —



B20 LRL Lower range-limit — –32000 to 32000



B21 URL Upper range-limit — –32000 to 32000



B30 MIN SPAN Minimum span — –32000 to 32000



B40 MAX STA T.P. Maximum static pressure*

6

—



—



B60 SELF CHECK

Self-diagnostic 
messages

— Same as A60



C SETTING Setting data — Menu name



C10 TAG. NO. Tag number



16 alphanumerics As specifi ed when

ordered.



C20 PRESS UNIT Measurement range units



Selected from mmH

2

O,
mmAq, mmWG, mmHg,
T orr , Pa, hPa, kPa,MPa,
mbar, bar , gf/cm

2

, kgf/cm2,

inH

2

O, inHg, ftH2O, psi, or atm

As specifi ed when
ordered.



C21 LOW RANGE Measurement range, lower

range value



–32000 to 32000(but within
measurement range)

As specifi ed when
ordered.



C22 HIGH RANGE Measurement range,

higher range value



–32000 to 32000(but within
measurement range)

As specifi ed when
ordered.



C30 AMP DAMPING Damping time constant



Selected from 0.2*

2

, 0.5, 1.0,

2.0, 4.0, 8.0, 16.0, 32.0, or

64.0 sec.

2.0 s



C40 OUTPUT MODE Output mode and integral

indicator mode



Selected from OUT :LIN; DSP:
LIN, OUT :LIN; DSP:SQR,
OUT :SQR; DSP:SQR

As specifi ed when
ordered.
If not specifi ed,
OUT : LIN; DSP: LIN.



——

C60 SELF CHECK Self-diagnostic messages — Same as A60



D AUX SET 1 Auxiliary setting data 1 — Menu name



D10 LOW CUT Low cut



0.0 to 20.0% 10.0%



D11 LOW CUT MODE Low cut mode



LINEAR/ZERO LINEAR



D15 OUT LIMIT(L) Lower output range-limit



–5.0 to 110.0% –5.0%*

7



D16 OUT LIMIT(H) Lower output range-limit



–5.0 to 110.0% 110.0%



D20 DISP SELECT Display selection



NORMAL %/USER SET, USER
& %/INP PRES, PRES & %

As specifi ed when
ordered.



D21 DISP UNIT Engineering unit for display



8 uppercase alphanumerics



D22 DISP LRV Engineering range, lower

range value



–19999 to 19999 As specifi ed when

ordered.



D23 DISP HRV Engineering range, higher

range value



–19999 to 19999 As specifi ed when

ordered.



<8. Parameter Summary>

31

IM 01C22A01-01E

No. Item Description

Rewrita-

bility

Remarks Default Value

Applicability

FPL

D30 TEMP UNIT Temperature setting units



deg C/deg F deg C



D31 STAT. P. UNIT Static pressure setting

units



Selected from mmH

2

O,
mmAq, mmWG, mmHg, T orr,
Pa, hPa, kPa, MPa, mbar,
bar, gf/cm

2

, kgf/cm2, inH2O,

inHg, ftH

2

O, psi, or atm

As specifi ed when
ordered. If not
specifi ed, MPa.



—



D40 REV OUTPUT Output reversal



NORMAL/REVERSE If not specifi ed,

NORMAL.



D45 H/L SWAP Impulse piping accessing

direction



NORMAL/REVERSE*

4

NORMAL



——

D52 BURN OUT CPU error — HIGH/LOW, –5 to 1 10%*

3

HIGH



D53 ERROR OUT Hardware error



HOLD/HIGH/LOW, –5 to
110%*

3

HIGH



D60 SELF CHECK Self-diagnostic messages — Same as A60



E AUX SET 2 Auxiliary setting data 2 — Menu name



E10 DFS MODE DFS mode



OFF/ON*

5

ON



—

E14 TEMP SELECT

Reference temperature sensor



AMP . TEMP/CAP. TEMP*5CAP . TEMP



—

E15 TEMP ZERO

Zero shift conpensation setup



±610.00*

5

0.00



—

E30 BI DIRE MODE Bidirectional mode



OFF/ON OFF



——

E50 AUTO RECOVER Auto-recover from sensor

error



OFF/ON ON



E60 SELF CHECK Self-diagnostic messages — Same as A60



H AUTO SET Automatic setup — Menu name



H10 AUTO LRV

Automatic measurement
range lower range value setup



–32000 to 32000 Displays the same

data as C21.



H11 AUTO HRV

Automatic measurement range
higher range value setup



–32000 to 32000 Displays the same

data as C22.



H60 SELF CHECK Self-diagnostic messages — Same as A60



J ADJUST Adjustment data — Menu name



J10 ZERO ADJ Automatic zero adjustment



–5 to 110.0%*

3



J11 ZERO DEV. Manual zero adjustment



J15 SPAN ADJ Manual span adjustment



–10.00 to 10.00% 0.00%



J20 EXT . ZERO ADJ External zero adjustment

screw permission



ENABLE/INHIBIT



J30 OUTPUT 4mA 4mA adjustment



–10.00 to 10.00% 0.00%



J31 OUTPUT 20mA 20mA adjustment



–10.00 to 10.00% 0.00%



J60 SELF CHECK Self-diagnostic messages — Same as A60



K TEST Tests — Menu name



K10 OUTPUT in % Test output % setting



–5 to 110.0%*

3

Displays

‘ACTIVE’ while executing



K60 SELF CHECK Self-diagnostic messages — Same as A60



M MEMO Memo — Menu name



M10 MEMO 1 Memo



8 uppercase alphanumerics



M20 MEMO 2 Memo



8 uppercase alphanumerics



M30 MEMO 3 Memo



8 uppercase alphanumerics



M40 MEMO 4 Memo



8 uppercase alphanumerics



M50 MEMO 5 Memo



8 uppercase alphanumerics



M60 SELF CHECK Self-diagnostic messages — Same as A60



P RECORD History of the errors —



P10 ERROR REC 1 Last error



Display the error



P11 ERROR REC 2 One time before



Display the error



P12 ERROR REC 3 Two time before



Display the error



P13 ERROR REC 4 Three time before



Display the error



P60 SELF CHECK Self-diagnostic messages — Same as A60



*1: In case of Model EJA120A, static pressure cannot be measured. The display is always 0 MPa, but this is not a measured value.
*2: When Optional code /F1 is specifi ed, substitute the value with 0.1.
*3: When Optional code /F1 is specifi ed, substitute the value –5 with –2.5.
*4: Not applicable for Model EJA115.
*5: Applicable only for Model EJA118W, EJA118N, EJA1 18Y, EJA438W, and EJA438N.
*6: See MWP(max. working pressure) on the nameplate. B40 shows an approximate value of maximum pressure for the capsule.
*7: Unless otherwise specifi ed by order. When Optional code /F1 is specifi ed, substitute the value –5 with –2.5.

Parameter Summary

8

<Installation and Operating Precautions for TIIS Intrinsically Safe Equipment>

32

EX-A03E

Installation and Operating Precautions for TIIS Intrinsically Safe Equipment

Apparatus Certifi ed Under Technical Criteria (IEC-compatible Standards) and from

“RECOMMENDED PRACTICES for Explosion-Protected Electrical Installations in General

Industries,” published in 1979

1. General

The following describes precautions on electrical apparatus
of intrinsically safe construction (hereinafter referred to as
intrinsically safe apparatus).

Following the Labor Safety and Health Laws of Japan, an
intrinsically safe apparatus must undergo type tests in order
to be certifi ed by the T echnical Institute of Industrial Safety,
Inc. These tests are required to satisfy either the technical
criteria for electrical machinery and equipment in compliance
with explosionproof standards involving infl ammable gases or
vapors and for machinery and equipment having explosionproof
performance (standards notifi cation no. 556 from the Japanese
Ministry of Labor) (hereinafter referred to as technical criteria), in
conformity with IEC Standards, or the “Recommended Practice
for Explosion-Protected Electrical Installations in General
Industries,” published in 1979. Such a certifi ed apparatus can be
used in hazardous locations where infl ammable gases or vapors
may be present.

Certifi ed apparatus includes a certifi cation label and an
equipment nameplate with the specifi cations necessary for
explosion requirements as well as precautions on explosion
protection. Please confi rm these precautionary items and use
them to meet specifi cation requirements.

For electrical wiring and maintenance servicing, please refer
to “Internal Wiring Rules” in the Electrical Installation T echnical
Standards as well as “USER’S GUIDELINES for Electrical
Installations for Explosive Gas Atmospheres in General
Industry,” published in 1994.

T o meet intrinsically safe requirements, equipment that can be
termed an “intrinsically safe apparatus” must:

(1) be certifi ed by the Technical Institute of Industrial Safety,

Inc. in accordance with the Labor Safety and Health Laws of
Japan and have the appropriate mark of certifi cation labeled
on its case, and

(2) be used in compliance with the specifi cations marked on its

certifi cation label, equipment nameplate and precautionary
information furnished.

Note: Intrinsically safe apparatus satisfy their performance under

specifi c conditions. They are not always absolutely safe under
every operational and environmental condition. In other words,
they are not safe products involved with factors such as chemical
reactions, geographical changes or the like other than affected by
electric energy from the equipment itself.

2. Electrical Apparatus of Intrinsic Safety Type of
Explosion-Protected Construction

The intrinsic safety type of explosion-protected construction is
a method of protection applicable to a circuit or part of a circuit
in which, under prescribed test conditions, no spark or thermal
effect, whether produced normally or accidentally , is capable
of causing a prescribed explosive gas to ignite. In other words,
electrical apparatus of this construction is intended to suppress
electrical energy thereby preventing ignition of a given explosive
gas atmosphere even though spark or high thermal effect occurs
in the electric circuitry.

Intrinsically safe electrical apparatus generally comprise
intrinsically safe apparatus installed in a hazardous location
and a safety barrier (associated apparatus), installed in a non­hazardous location, aimed at preventing electrical energy from
fl owing into the electric circuitry of intrinsically safe apparatus.

However, battery-operated, portable intrinsically safe apparatus
or the like may be used alone.

3. Terminology

(1) Intrinsically safe apparatus: Electrical apparatus in which all

the circuits are intrinsically safe circuits.

(2) Associated apparatus: Electrical apparatus in which there

are both intrinsically safe circuits and non-intrinsically safe
circuits that can affect the safety of intrinsically safe circuits.

(3) Safety barrier: A specifi c type of associated apparatus, which

consists mainly of safety barrier elements, and serves to
limit the fl ow of excessive electrical energy, which is capable
of causing ignition of a given explosive gas or vapour of a
non-intrinsically safe circuit into concerned intrinsically safe
circuits.

(4) Apparatus of category “ia”: Intrinsically safe electrical

apparatus and associated apparatus which are incapable of
causing ignition of a given explosive gas or vapour with the
appropriate safety factors such as:

- when up to two countable faults are applied and, in
addition,

- when non-countable faults produce an onerous condition.

(5) Apparatus of category “ib”: Intrinsically safe electrical

apparatus and associated apparatus which are incapable of
causing ignition of a given explosive gas or vapour, with the
appropriate safety factors such as:

- when up to one countable fault is applied and, in addition,

- when non-countable faults produce an onerous condition.

(6) Safety rating: A rating to be designated to intrinsically safe

apparatus as well as associated apparatus and is the
maximum rating allowable for maintaining intrinsic safety of
concerned intrinsically safe circuits.

4. Caution on Combining Intrinsically Safe
Apparatus and Safety Barriers

(1) A combination of certifi ed intrinsically safe apparatus and

safety barriers needs to satisfy combination requirements.
If intrinsically safe apparatus specify safety barriers for
combination, safety barriers other than specifi ed cannot be
used (see Note 1 for more details).

(2) Certifi ed intrinsically safe systems specify specifi c safety

barriers in combination with intrinsically safe apparatus. So
safety barriers other than specifi ed cannot be used (see
Note 2 for more details).

(3) Other than limitations of combining intrinsically safe

apparatus and safety barriers as given in (1) and (2) above,
two or more pieces of apparatus certifi ed under different
standards cannot be combined with each other (see Note 3
for more details). In addition, bear in mind that classifi cations
of explosion protection such as “IIA,” “IIB” and “IIC” and
category “ia” and “ib” limit a combination of intrinsically safe
apparatus and safety barriers.

For more details, see the “Type Certifi cate Guide for

Explosion-Protected Construction for Electrical Machinery
and Equipment,” issued by the Japanese Ministry of Labour,
the Research Institute of Industrial Safety.

Note 1: Testing Apparatus

Intrinsically safe apparatus and safety barriers are assessed
individually to ensure that their safety requirements are satisfi ed.
T ested and certifi ed intrinsically safe apparatus and safety
barriers incorporate individual certifi cation numbers.
A combination of intrinsically safe apparatus and safety barriers
involves the following two limitations:

<Installation and Operating Precautions for TIIS Intrinsically Safe Equipment>

33

EX-A03E

(1) A safety barrier which meets the combination requirements

by referring to its safety rating and combination parameters
shall be selected.

(2) For pressure transmitters, pH transmitters, temperature

detectors and the like, safety barriers that can be combined
are already specifi ed. Other safety barriers cannot be used.

Note 2: Testing Intrinsically Safe System

An assembly (as a system) in which intrinsically safe apparatus
and safety barriers are combined is assessed to ensure that its
safety requirements are satisfi ed. A tested and certifi ed system
incorporates a certifi cation number (intrinsically safe apparatus
and safety barriers have the same certifi cation number).

Note 3: Impossible Combinations of Apparatus Certifi ed Under Different

Standards
Intrinsically safe apparatus certifi ed under technical criteria and
safety barriers certifi ed under the “Recommended Practice for
Explosion-Protected Electrical Installations in General Industries”
(1979) and vice versa cannot be combined even if their
combination requirements are satisfi ed.

5. Installation of Intrinsically Safe Apparatus and
Safety Barriers

(1) Classifi cation of installation location

Intrinsically safe apparatus may be installed, depending upon
applicable gases, in a hazardous area in Zone 0, 1 or 2 (Note 4
below), where the specifi ed gases are present. However, note
that apparatus certifi ed under T echnical Criteria, in category “ib”
shall be installed only in Zone 1 or 2. Safety barriers (associated
apparatus) that are combined with these intrinsically safe
apparatus shall be installed only in a non-hazardous area. In
cases where safety barriers are installed in a hazardous area,
they shall be enclosed, for example, in a fl ameproof enclosure.

Note 4: Hazardous areas are classifi ed in zones based upon the

frequency of the appearance and the duration of an explosive gas
atmosphere as follows:
Zone 0: An area in which an explosive gas atmosphere is

present continuously or is present for long periods.

Zone 1: An area in which an explosive gas atmosphere is likely

to occur in normal operation.

Zone 2: An area in which an explosive gas atmosphere is not

likely to occur in normal operation and if it does occur it
will exist for a short period only.

(2) Ambient temperature limits for intrinsically safe

apparatus

Intrinsically safe apparatus shall be installed in a location where
the ambient temperature ranges from –20° to +40°C (for those
certifi ed under T echnical Criteria) or –10° to +40°C (for those
certifi ed under the “Recommended Practice for Explosion-
Protected Electrical Installations in General Industries” (1979).
However, some fi eld-mounted intrinsically safe apparatus
may be used at an ambient temperature up to 60°C. So,
specifi cations should be checked before installing intrinsically
safe apparatus.

If the intrinsically safe apparatus are exposed to direct sunshine
or radiant heat from plant facilities, appropriate thermal
protection measures shall be taken.

6. Wiring for Intrinsically Safe Circuits

In intrinsically safe construction, safety shall be maintained as
an intrinsically safe system involving intrinsically safe apparatus
and safety barriers connected thereto, and electrical wiring
(through intrinsically safe circuits) interconnected between them.
In other words, even when safety requirements are maintained
individually by intrinsically safe apparatus and safety barriers,
they shall not be affected by electrical or magnetic energy
caused by electrical wiring.

T o make electrical wiring for intrinsically safe circuits, you must:

(a) refer to the equipment confi guration diagram and make

electrical wiring properly;

(b) prevent intrinsically safe wiring from being contacted with

non-intrinsically safe wiring, and separate the intrinsically
safe circuit from other electrical circuits;

(c) prevent intrinsically safe wiring from being electrostatically

and magnetically affected by non-intrinsically safe wiring;

(d) reduce wiring inductance and capacitance produced

between the intrinsically safe apparatus and safety barrier
where possible, and use a shorter cable between the
intrinsically safe apparatus and safety barrier than specifi ed
if the maximum permissible inductance of the cable is
specifi ed as operating conditions;

(e) conform to conditions of installation such as wiring method,

earthing or the like, if any; and

(f) protect the outer sheath of cables from damage with

appropriate measures.

7. Maintenance and Inspection of Intrinsically Safe
Apparatus and Safety Barriers

Maintenance and inspection of intrinsically safe apparatus and
safety barriers shall be limited to within the instructions described
in applicable instruction manuals. If other than this is required,
contact the manufacturers. For more information, refer to the
“USER’S GUIDELINES for Electrical Installations for Explosive
Gas Atmospheres in General Industry” issued in 1994 by the
Japanese Ministry of Labour, the Research Institute of Industrial
Safety.

(1) Requirements for maintenance personnel

Maintenance and inspection of intrinsically safe apparatus and
safety barriers shall be conducted by maintenance personnel
skilled in intrinsically safe construction and installation of
electrical devices as well as capable of applying associated
rules.

(2) Maintenance and Inspection

(a) Visual inspection

Visually inspect the external connections of intrinsically safe
apparatus and safety barriers, and cables for damage or
corrosion as well as other mechanical and structural defects.

(b) Adjustments

Zero, span and sensitivity adjustments shall be made
with applicable adjusting potentiometers and mechanical
adjustment screws.
These maintenance adjustments shall be made in a non­hazardous location.

CAUTION

If intrinsically safe apparatus and safety barriers require
maintenance service and checking, a gas detector shall be
used to ensure that there is no explosive gas in the location
(maintenance servicing shall be conducted in a non­hazardous location).

(3) Repair

Intrinsically safe apparatus and safety barriers shall be repaired
by manufacturers.

(4) Prohibition of modifi cations and specifi cation

changes

Do not attempt to make modifi cations or change specifi cations
which may affect safety .

<Installation and Operating Precautions for TIIS Flameproof Equipment>

34

EX-B03E

Installation and Operating Precautions for TIIS Flameproof Equipment

Apparatus Certifi ed Under Technical Criteria (IEC-compatible Standards)

1. General

The following describes precautions on electrical apparatus of
fl ameproof construction (hereinafter referred to as fl ameproof
apparatus) in explosion-protected apparatus.

Following the Labour Safety and Health Laws of Japan,
fl ameproof apparatus is subjected to type tests to meet either
the technical criteria for explosionproof electrical machinery and
equipment (standards notifi cation no. 556 from the Japanese
Ministry of Labour) (hereinafter referred to as technical criteria),
in conformity with the IEC Standards, or the “Recommended
Practice for Explosion-Protected Electrical Installations in
General Industries,” published in 1979. These certifi ed apparatus
can be used in hazardous locations where explosive or
infl ammable gases or vapours may be present.

Certifi ed apparatus includes a certifi cation label and an
equipment nameplate with the specifi cations necessary for
explosion requirements as well as precautions on explosion
protection. Please confi rm these precautionary items and use
them to meet specifi cation requirements.

For electrical wiring and maintenance servicing, please refer
to “Internal Wiring Rules” in the Electrical Installation T echnical
Standards as well as “USER’S GUIDELINES for Electrical
Installations for Explosive Gas Atmospheres in General
Industry,” published in 1994.

T o meet fl ameproof requirements, equipment that can be termed
“fl ameproof” must:

(1) Be certifi ed by a Japanese public authority in accordance

with the Labour Safety and Health Laws of Japan and have
a certifi cation label in an appropriate location on its case,
and

(2) Be used in compliance with the specifi cations marked on its

certifi cation label, equipment nameplate and precautionary
information furnished.

2. Electrical Apparatus of Flameproof Type of
Explosion-Protected Construction

Electrical apparatus which is of fl ameproof construction is
subjected to a type test and certifi ed by the Japanese Ministry
of Labour aiming at preventing explosion caused by electrical
apparatus in a factory or any location where infl ammable gases
or vapours may be present. The fl ameproof construction is
of completely enclosed type and its enclosure shall endure
explosive pressures in cases where explosive gases or
vapours entering the enclosure cause explosion. In addition,
the enclosure construction shall be such that fl ame caused
by explosion does not ignite gases or vapours outside the
enclosure.

In this manual, the word "fl ameproof" is applied to the fl ameproof
equipment combined with the types of protection "e", "o", "i", and
"d" as well as fl ameproof equipment.

3. Terminology

(1) Enclosure

An outer shell of an electrical apparatus, which encloses live
parts and thus is needed to confi gure explosion-protected
construction.

(2) Shroud

A component part which is so designed that the fastening of joint
surfaces cannot be loosened unless a special tool is used.

(3) Enclosure internal volume

This is indicated by:— the total internal volume of the fl ameproof
enclosure minus the volume of the internal components essential
to equipment functions.

(4) Path length of joint surface

On a joint surface, the length of the shortest path through
which fl ame fl ows from the inside to outside of the fl ameproof
enclosure. This defi nition cannot be applied to threaded joints.

(5) Gaps between joint surfaces

The physical distance between two mating surfaces, or
differences in diameters if the mating surfaces are cylindrical.

Note: The permissible sizes of gaps between joint surfaces, the path

length of a joint surface and the number of joint threads are
determined by such factors as the enclosure’s internal volume,
joint and mating surface construction, and the explosion
classifi cation of the specifi ed gases and vapours.

4. Installation of Flameproof Apparatus
(1) Installation Area

Flameproof apparatus may be installed, in accordance with
applicable gases, in a hazardous area in Zone 1 or 2, where
the specifi ed gases are present. Those apparatus shall not be
installed in a hazardous area in Zone 0.

Note: Hazardous areas are classifi ed in zones based upon the

frequency of the appearance and the duration of an explosive gas
atmosphere as follows:
Zone 0: An area in which an explosive gas atmosphere is present

continuously or is present for long periods.

Zone 1: An area in which an explosive gas atmosphere is likely to

occur in normal operation.

Zone 2: An area in which an explosive gas atmosphere is not

likely to occur in normal operation and if it does occur it
will exist for a short period only.

(2) Environmental Conditions

The standard environmental condition for the installation of
fl ameproof apparatus is limited to an ambient temperature range
from –20°C to +40°C (for products certifi ed under Technical
Criteria). However, some fi eld-mounted instruments may be
certifi ed at an ambient temperature up to +60°C as indicated
on the instrument nameplates. If the fl ameproof apparatus are
exposed to direct sunshine or radiant heat from plant facilities,
appropriate thermal protection measures shall be taken.

5. External Wiring for Flameproof Apparatus

Flameproof apparatus require cable wiring or fl ameproof metal
conduits for their electrical connections. For cable wiring,
cable glands (cable entry devices for fl ameproof type) to wiring
connections shall be attached. For metal conduits, attach sealing
fi ttings as close to wiring connections as possible and completely
seal the apparatus. All non-live metal parts such as the enclosure
shall be securely grounded.

For details, see the “USER’S GUIDELINES for Electrical
Installations for Explosive Gas Atmospheres in General
Industry,” published in 1994.

(1) Cable Wiring

• For cable wiring, cable glands (cable entry devices for
fl ameproof type) specifi ed or supplied with the apparatus
shall be directly attached to the wiring connections to
complete sealing of the apparatus.

• Screws that connect cable glands to the apparatus are those
for G-type parallel pipe threads (JIS B 0202) with no sealing
property. To protect the apparatus from corrosive gases
or moisture, apply non-hardening sealant such as liquid
gaskets to those threads for waterproofi ng.

<Installation and Operating Precautions for TIIS Flameproof Equipment>

35

EX-B03E

• Specifi c cables shall be used as recommended by the
“USER’S GUIDELINES for Electrical Installations for
Explosive Gas Atmospheres in General Industry ,” published
in 1994.

• In necessary, appropriate protective pipes (conduit or fl exible
pipes), ducts or trays shall be used for preventing the cable
run (outside the cable glands) from damage.

• To prevent explosive atmosphere from being propagated
form Zone 1 or 2 hazardous location to any different
location or non-hazardous location through the protective
pipe or duct, apply sealing of the protective pipes in the
vicinity of individual boundaries, or fi ll the ducts with sand
appropriately.

• When branch connections of cables, or cable connections
with insulated cables inside the conduit pipes are made,
a fl ameproof or increased-safety connection box shall be
used. In this case, fl ameproof or increased-safety cable
glands meeting the type of connection box must be used for
cable connections to the box.

(2) Flameproof Metal Conduit Wiring

• For the fl ameproof metal conduit wiring or insulated
wires shall be used as recommended by the USER’S
GUIDELINES for Electrical Installations for Explosive Gas
Atmospheres in General Industry, published in 1994.

• For conduit pipes, heavy-gauge steel conduits conforming to
JIS C 8305 Standard shall be used.

• Flameproof sealing fi ttings shall be used in the vicinity of
the wiring connections, and those fi ttings shall be fi lled with

sealing compounds to complete sealing of the apparatus.
In addition, to prevent explosive gases, moisture, or fl ame
caused by explosion form being propagated through the
conduit, always provide sealing fi ttings to complete sealing
of the conduit in the following locations:

(a) In the boundaries between the hazardous and non-

hazardous locations.

(b) In the boundaries where there is a different classifi cation

of hazardous location.

• For the connections of the apparatus with a conduit pipe or

its associated accessories, G-type parallel pipe threads (JIS
B 0202) shall be used to provide a minimum of fi ve-thread
engagement to complete tightness. In addition, since these
parallel threads do not have sealing property, non-hardening
sealant such as liquid gaskets shall thus be applied to those
threads for ensuring waterproofness.

• If metal conduits need fl exibility, use fl ameproof fl exible

fi ttings.

6. Maintenance of Flameproof Apparatus

T o maintain the fl ameproof apparatus, do the following. (For
details, see Chapter 10 “MAINTENANCE OF EXPLOSION­PROTECTED ELECTRICAL INST ALLATION” in the USER’S
GUIDELINES for Electrical Installations for Explosive Gas
Atmospheres in General Industry.)

(1) Maintenance servicing with the power on.

Flameproof apparatus shall not be maintenance-serviced with
its power turned on. However, in cases where maintenance
servicing is to be conducted with the power turned on, with
the equipment cover removed, always use a gas detector
to check that there is no explosive gas in that location. If it
cannot be checked whether an explosive gas is present or not,
maintenance servicing shall be limited to the following two items:

(a) Visual inspection

Visually inspect the fl ameproof apparatus, metal conduits,
and cables for damage or corrosion, and other mechanical
and structural defects.

(b) Zero and span adjustments

These adjustments should be made only to the extent that
they can be conducted from the outside without opening the
equipment cover. In doing this, great care must be taken not
to cause mechanical sparks with tools.

(2) Repair

If the fl ameproof apparatus requires repair, turn off the power
and transport it to a safety (non-hazardous) location. Observe
the following points before attempting to repair the apparatus.

(a) Make only such electrical and mechanical repairs as will

restore the apparatus to its original condition. For the
fl ameproof apparatus, the gaps and path lengths of joints
and mating surfaces, and mechanical strength of enclosures
are critical factors in explosion protection.
Exercise great care not to damage the joints or shock the
enclosure.

(b) If any damage occurs in threads, joints or mating surfaces,

inspection windows, connections between the transmitter
and terminal box, shrouds or clamps, or external wiring
connections which are essential in fl ameproofness, contact
Y okogawa Electric Corporation.

CAUTION

Do not attempt to re-process threaded connections or refi nish
joints or mating surfaces.

(c) Unless otherwise specifi ed, the electrical circuitry and

internal mechanisms may be repaired by component
replacement, as this will not directly affect the requirements
for fl ameproof apparatus (however, bear in mind that the
apparatus must always be restored to its original condition).
If you attempt to repair the fl ameproof apparatus, company-
specifi ed components shall be used.

(d) Before starting to service the apparatus, be sure to check all

parts necessary for retaining the requirements for fl ameproof
apparatus. For this, check that all screws, bolts, nuts, and
threaded connections have properly been tightened.

(3) Prohibition of specifi cation changes and

modifi cations

Do not attempt to change specifi cations or make modifi cations
involving addition of or changes in external wiring connections.

7. Selection of Cable Entry Devices for Flameproof
Type

IMPORTANT

The cable glands (cable entry devices for fl ameproof type)
conforming to IEC Standards are certifi ed in combination
with the fl ameproof apparatus. So, Y okogawa-specifi ed cable
entry devices for fl ameproof type shall be used to meet this
demand.

References:

(1) Type Certifi cate Guide for Explosion-Protected Construction

Electrical Machinery and Equipment (relating to T echnical
Standards Conforming to International Standards), issued by
the T echnical Institution of Industrial Safety, Japan

(2) USER’S GUIDELINES for Electrical Installations for

Explosive Gas Atmospheres in General Industry (1994),
issued by the Japanese Ministry of Labour, the Research
Institute of Industrial Safety.

36

IM 01C22A01-01E

Revision Information

 Title : EJA Series Differential Pressure and Pressure Transmitters Installation Manual
 Manual No. : IM 01C22A01-01E

Edition Date Page Revised Item
1st Jan. 2008 New publication
2nd Oct.2008 12

13
28
29

2.4.4 Change explosion protection marking for type n from EEx to Ex.

2.5 Update EMC conformity standards.

7. Modify descriptions and notes for Er.01.

8. Add new parameters.

www.yokogawa.com/fld/

Copyright © 2008 Yokogawa Electric Corporation. All Rights Reserved.

EJA Series Electronic User’s Manual IM 01C22A11-01E

㨇System Requirements㨉
OS 㧦 Microsoft Windows 2000 (Professional) / XP (Professional)

CPU 㧦 Pentium 300 MHz or higher
RAM 㧦 128 MB or more
Display 㧦 800 × 600 SVGA or higher, 256 colors

㨇Contents㨉

㨇Trademarks㨉

This CD-R contains information in PDF format that is necessary for safe and effective operation of the product.

Microsoft, MS-DOS, Windows and Windows NT are either registered trademarks or trademarks of Microsoft
Corporation in the United States and/or other countries.
Other company and product names are trademarks or registered trademarks of their respective holders.

WARNING: This CD contains software, and is for use in a computer only. Do not play this on

an audio CD player, as the high volume may damage your hearing or audio speakers.

for Windows

Not for sale

YOKOGAWA CORPORATION OF AMERICA

2 Dart Road, Newnan, Georgia 30265-1094, U.S.A.
Phone : [phone]
Fax : [phone]

YOKOGAWA EUROPE B. V.

Databankweg 20 Amersfoort 3821 AL, THE NETHERLANDS
Phone : [phone] Fax : [phone]

Branch Sales Offices / Wien (Austria), Zaventem (Belgium), Ratingen
(Germany), Madrid (Spain), Runcorn (United Kingdom), Milano (Italy),
Velizy-Villacoublay (France), Budapest (Hungary), Stockholm (Sweden), Sola
(Norway), Warszawa (Poland), Vila Nova de Gaia (Portugal), Bucharest
(Romania)

YOKOGAWA AMERICA DO SUL LTDA.

Praca Acapulco, 31 - Santo Amaro. Sao Paulo/SP - BRAZIL
Phone : [phone] Fax : [phone]

YOKOGAWA ENGINEERING ASIA PTE. LTD.

5 Bedok South Road, 469270 SINGAPORE
Phone : [phone] Fax : [phone]

YOKOGAWA ELECTRIC KOREA CO., LTD.

14-1, Yangpyongdong-4Ga, Youngdeungpo-Gu, Seoul, 150-866 KOREA
Phone : [phone] Fax : [phone]

YOKOGAWA AUSTRALIA PTY. LTD.

Tower A, 112-118 Talavera Road, Macquarie Park,
N.S.W.21 13, AUSTRALIA
Phone : [phone] Fax : [phone]

YOKOGAWA INDIA LTD.

Plot No.96 Electronic City Complex, Hosur Road, Bangalore 560100, INDIA
Phone : [phone] Fax : [phone]

YOKOGAWA CHINA CO., LTD.

Tangyue Pavilion, Xi'an software park No.72,
Keji 2nd Road Xi'an High-tech Industries Development Zone Xi'an 710075,
CHINA
Phone : [phone] Fax : [phone]

YOKOGAWA ELECTRIC CORPORATION

Headquarters

2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 JAPAN

Branch Sales Offices

Nagoya, Osaka, Hiroshima, Fukuoka, Sapporo, Sendai, Ichihara, Toyota,
Kanazawa, Okayama, and Kitakyusyu.

May ‘08

Printed in Japan