YOKOGAWA Dpharp vigilantplant EJA110A User manual

User’s
Manual
Yokogawa Electric Corporation
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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 Specifications 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 Affixing the Teflon 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 Terminal 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 PointAdjustment.............................................. 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 EJASeries
with BRAIN and HARTprotocols. It does not provide
the product specific functional specifications and
explanations, maintenance, troubleshooting, and fieldbus
communication operating procedures, both FOUNDATION
FieldbusTM 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 Table 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
EJA210Aand EJA220A IM 01C21C01-01E S1
EJA310A, EJA430A, and
EJA440A IM 01C21D01-01E S1
EJA510Aand 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
EJASeries HARTProtocol IM 01C22T01-01E —
EJASeries FOUNDATION Fieldbus
Communication Type IM 01C22T02-01E —
EJASeries PROFIBUS PA
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 Yokogawa’s written
permission.
• Yokogawa makes no warranty of any kind with regard
to this manual, including, but not limited to, implied
warranty of merchantability and fitness 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 Yokogawa sales office.
• The specifications covered by this manual are limited
to those for the standard type under the specified
model number break-down and do not cover custom-
made instruments.
• Please note that changes in the specifications,
construction, or component parts of the instrument
may not immediately be reflected in this manual at
the time of change, provided that postponement of
revisions will not cause difficulty to the user from a
functional or performance standpoint.
• Yokogawa assumes no responsibilities for this
product except as stated in the warranty.
• If the customer or any third party is harmed by the use
of this product, Yokogawa assumes no 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 PAand 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, Yokogawa 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 fluid.
• 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 fluid may be toxic
or otherwise harmful.
• When removing the instrument from hazardous
processes, avoid contact with the fluid 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 confirm 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 YOKOGAWA
office.
• 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 first
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) Modification
• Yokogawa will not be liable for malfunctions or
damage resulting from any modification 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
Yokogawa representative from which the instrument
was purchased, or the nearest Yokogawa office.
• 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
specification 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 Yokogawa 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 specified by
Yokogawa, or due to improper maintenance of the
installation location.
- Failure or damage due to modification or repair
by any party except Yokogawa or an approved
representative of Yokogawa.
- Malfunction or damage from improper relocation of
the product in question after delivery.
- Reason of force majeure such as fires,
earthquakes, storms/floods, 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 Suffix 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
(Lor flat 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
(Lor flat type) 1
Plate 1
Adapter 1
EJA210A
EJA438W Option code /T Teflon film 1
Fluorinated oil 1
EJA118W Option code /T Teflon film 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 Transmitter Mounting Hardware
2.1 Model and Specifications
Check
The model name and specifications 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 significant 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) AmbientAtmosphere
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 certified. 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
fluid.
• 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 fluid 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 firmly.
(b) Make sure that there are no leaks in the impulse
piping.
(c) Never apply a pressure higher than the specified
maximum working pressure.
CAUTION
Maximum working pressure of the model EJA120A
differential pressure transmitter is 50 kPa
{0.5 kgf/cm2}.
Should the pressure exceed 50 kPa {0.5 kgf/cm2}, it
is possible to break the sensor. Proceed with caution
when applying pressure.
2.4 Installation of Explosion
Protected Type
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 modification
undertaken by the customer, intrinsically safe
construction or explosionproof construction is damaged
and may cause dangerous condition. Please contact
Yokogawa for any repair or modification 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 certified 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
To 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 EJASeries pressure transmitters with
optional code /FS1 are applicable for use in
hazardous locations.
• Applicable Standard: FM3600, FM3610, FM3611,
FM3810,ANSI/NEMA250

<2. Handling Cautions> 7
IM 01C22A01-01E
• Intrinsically Safe for Class I, Division 1, GroupsA,
B, C & D. Class II, Division 1, Groups E, F & G and
Class III, Division 1 Hazardous Locations.
• Nonincendive for Class I, Division 2, GroupsA, B, C &
D. Class II, Division 2, Groups E, F & G and Class III,
Division 1 Hazardous Locations.
• Outdoor hazardous locations, NEMA4X.
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
Note 2. Entity Parameters
• Intrinsically SafeApparatus Parameters
[GroupsA, B, C, D, E, F and G]
Vmax = 30 V, Ci = 22.5 nF, Imax = 165 mA,
Li = 730 μH, Pmax = 0.9 W
* AssociatedApparatus Parameters
(FM approved barriers)
Voc ≤30 V, Ca > 22.5 nF, Isc ≤165 mA, La > 730 μH,
Pmax ≤0.9W
• Intrinsically SafeApparatus 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
* AssociatedApparatus 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 (ISApparatus) ≥Pmax (Barrier),
Ca ≥Ci + Ccable, La ≥Li + Lcable
Note 3. Installation
• Barrier must be installed in an enclosure that meets
the requirements ofANSI/ISAS82.01.
• Control equipment connected to barrier must not use
or generate more than 250 V rms or V dc.
• Installation should be in accordance withANSI/ISA
RP12.6 “Installation of Intrinsically Safe Systems for
Hazardous (Classified) Locations” and the National
Electric Code (ANSI/NFPA70).
• The configuration of associated apparatus must be
FMRCApproved.
• 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 “INSTALLIN ACCORDANCE WITH DOC. No.
IFM012-A12 P.1 and 2.”
Note 4. Maintenance and Repair
• The instrument modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void Factory
Mutual Intrinsically safe and NonincendiveApproval.
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 EJASeries differential, 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, NEMA4X.
• Temperature Class: T6
• AmbientTemperature: –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, “FACTORY 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. FACTORYSEALED,
CONDUIT SEAL NOT REQUIRED. INSTALL
INACCORDANCE WITH THE INSTRUCTION
MANUALIM 1C22.
• Take 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void Factory
Mutual ExplosionproofApproval.
c. FM Intrinsically Safe Type/FM
Explosionproof Type
Model EJASeries 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 Certification
a. CSA Intrinsically Safe Type
Caution for CSAIntrinsically safe type. (Following
contents refer to “DOC No. ICS003-A12 P.1-1 and
P.1-2.”)
Note 1. Model EJASeries differential, gauge, and
absolute pressure transmitters with optional
code /CS1 are applicable for use in hazardous
locations
Certificate: 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, GroupsA,
B, C & D. Class II, Division 1, Groups E, F & G and
Class III, Division 1 Hazardous Locations.
• Nonincendive for Class I, Division 2, GroupsA, B, C
& D, Class II, Division 2, Groups F & G, and Class III,
Hazardous Locations. (not use Safety Barrier)
• Encl. “Type 4X”
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
• ProcessTemperature: 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 (CSAcertified 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation and Yokogawa Corporation
ofAmerica is prohibited and will void Canadian
Standards Intrinsically safe and nonincendive
Certification.
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 Type
Caution for CSAexplosionproof type.
Note 1. Model EJASeries differential, gauge, and
absolute pressure transmitters with optional
code /CF1 are applicable for use in hazardous
locations:
Certificate: 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
• Temperature Class: T6, T5, and T4
• ProcessTemperature: 85°C (T6), 100°C (T5), and
120°C (T4)
• AmbientTemperature: –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 figure.
CAUTION: SEALALLCONDUITS WITHIN 50
cm OF THE ENCLOSURE.
UN SCELLEMENT DOITÊTRE INSTALLÉ 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 CIRCUITAVANT D´NLEVER LE
COUVERCLE.
• Take 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation and Yokogawa Corporation
ofAmerica is prohibited and will void Canadian
Standards Explosionproof Certification.
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 Type/CSA
Explosionproof Type
Model EJASeries pressure transmitters with optional
code /CU1 can be selected the type of protection
(CSAIntrinsically Safe or CSAExplosionproof) 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 Certification
Model EJASeries differential, gauge, and absolute
pressure transmitters with optional code /SU2 can
be selected the type of protection (IECEx Intrinsically
Safe/type n or flameproof) 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 Type / type n
Caution for IECEx Intrinsically safe and type n.
Note 1. Model EJASeries differential, 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
• AmbientTemperature :–40 to 60°C
• Max. ProcessTemp.: 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 certified.
• Input voltage of the safety barrier must be less than
250 Vrms/Vdc.
• The instrument modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation and will void IECEx Intrinsically
safe and type n certification.
• The cable entry devices and blanking elements for
type n shall be of a certified 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:
WHENAMBIENT TEMPERATURE ≥55°C,
USE THE HEAT-RESISTING CABLES ≥90°C.
Note 5. Special Conditions for Safe Use
• WARNING:
IN THE CASE WHERETHE ENCLOSURE OF
THE PRESSURE TRANSMITTER IS MADE OF
ALUMINUM, IF IT IS MOUNTED INANAREA
WHERE THE USE OF ZONE 0 IS REQUIRED,
IT MUSTBE INSTALLED SUCH, THAT, EVEN IN
THE EVENT OF RARE INCIDENTS, IGNITION
SOURCES DUE TO IMPACTAND FRICTION
SPARKSARE 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 flameproof type.
Note 1. Model EJASeries 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 ProcessTemperature: 120°C (T4),
100°C (T5), 85°C (T6)
• AmbientTemperature: –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 mAdc
Note 2. Wiring
• In hazardous locations, the cable entry devices shall
be of a certified flameproof type, suitable for the
conditions of use and correctly installed.
• Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The plug
attached is certificated as the flame proof IP67 as a
part of this apparatus.)
• In case ofANSI 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:
WHENAMBIENT TEMPERATURE ≥70°C,
USE THE HEAT-RESISTING CABLES ≥90°C.
• Take 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void IECEx
Certification.
2.4.4 CENELEC ATEX (KEMA)
Certification
(1) Technical Data
a. CENELEC ATEX (KEMA) Intrinsically Safe
Type
Caution for CENELECATEX (KEMA) Intrinsically safe
type.
Note 1. Model EJASeries differential, gauge, and
absolute pressure transmitters with optional
code /KS2 for potentially explosive atmospheres:
• No. KEMA02ATEX1030 X
• Applicable Standard: EN50014:1997, EN50020:1994,
EN50284:1999
• Type of Protection and Marking code: EEx ia IIC T4
• Temperature Class: T4
• Enclosure: IP67
• ProcessTemperature: 120°C max.
• AmbientTemperature: –40 to 60°C
Note 2. Electrical Data
• In type of explosion protection intrinsic safety EEx ia
IIC only for connection to a certified 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void KEMA
Intrinsically safe Certification.
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. CENELECATEX (KEMA) Flameproof Type
Caution for CENELECATEX (KEMA) flameproof
type.
Note 1. Model EJASeries differential, gauge, and
absolute pressure transmitters with optional
code /KF2 for potentially explosive atmospheres:
• No. KEMA02ATEX2148
• Applicable Standard: EN50014:1997, EN50018:2000
• Type of Protection and Marking Code:
EEx d IIC T6···T4
• Temperature Class: T6, T5, and T4
• Enclosure: IP67
• Maximum ProcessTemperature: 85°C (T6),
100°C (T5), and 120°C (T4)
• AmbientTemperature: 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 certified
flameproof type, suitable for the conditions of use.
Note 4. Operation
• Keep the “CAUTION” label to the transmitter.
CAUTION:AFTER DE-ENERGIZING, DELAY 10
MINUTES BEFORE OPENING.
WHEN THEAMBIENTTEMP.70°C, USE HEAT-
RESISTING CABLES90°C.
• Take 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 modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void KEMA
Flameproof Certification.
c. CENELEC ATEX (KEMA) Intrinsically Safe
Type/CENELEC ATEX (KEMA) Flameproof
Type/CENELEC ATEX Type n
Model EJA-ASeries pressure transmitters with
optional code /KU2 can be selected the type of
protection CENELECATEX (KEMA) Intrinsically Safe,
Flameproof or CENELECATEX Type 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 ATEX Type of Protection “n”
WARNING
When using a power supply not having a nonincendive
circuit, please pay attention not to ignite in the
surrounding flammable 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
• ProcessTemperature: 120°C max.
• AmbientTemperature: –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 modification or parts replacement by
other than authorized representative of Yokogawa
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 ATEX Type of Protection “Dust”
• Applicable Standard: EN50281-1-1:1997
• Type of Protection and Marking Code: II 1D
• Maximum Surface Temperature:
T65°C (Tamb.: 40°C), T85°C (Tamb.: 60°C), and
T105°C (Tamb.: 80°C)
Note 1. Installation instructions
The cable entry devices and blanking elements
shall be of a certificated 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 ofANSI 1/2 NPTplug,ANSI hexagonal
wrench should be applied to screw in.

<2. Handling Cautions> 13
IM 01C22A01-01E
(4) Operation
WARNING
• OPEN CIRCUITBEFORE REMOVING COVER.
INSTALLIN ACCORDANCE WITHTHIS 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 modification or parts replacement by
other than authorized Representative of Yokogawa
Electric Corporation is prohibited and will void the
certification.
(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: Specified model code.
STYLE: Style code.
SUFFIX: Specified suffix code.
SUPPLY: Supply voltage.
OUTPUT: Output signal.
MWP: Maximum working pressure.
CALRNG: Specified calibration range.
DISP MODE: Specified display mode.
OUTPUT MODE: Specified output mode.
NO.: Serial number and year of production*1.
TOKYO 180-8750 JAPAN:
The manufacturer name and the address*2.
*1: The third figure from the last shows the last one figure 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 ClassA, Table 2 (For use in industrial
locations)
EN61326-2-3
CAUTION
This instrument is a ClassAproduct, and it is designed
for use in the industrial environment. Please use this
instrument in the industrial environment only.
NOTE
YOKOGAWArecommends 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
• EJAseries 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 EJA530Acan
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: PressureAccessory - 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 fluid 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 fire is to be occurred, please take
safety measures at the device or system not to
influence 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 non-
conductive pollution occurs. Occasionally, however,
temporary conductivity caused by condensation must
be expected.
(2) Installation Category I
"Overvoltage category(Installation category)"
describes a number which defines 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 flow through
the transmitter.
• Do not step on this instrument after installation.
• For EJA430A, the atmospheric opening is located
on the low pressure side cover flange. For
EJA530Awith Measurement span codeA, 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 Transmitter Mounting
(Horizontal Impulse Piping Type)
F0303.ai
Process connector upside Process connector downside
Transmitter
mounting bolt
Mounting
bracket
Figure 3.3 Transmitter 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 flange 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
flange or the screws at the joints between the
capillary tube and cover flanges (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 flange as shown in Figure 3.5.The
customer should prepare the mating flange, 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 flanges as shown
in Figure 3.6. The customer should prepare the mating
flange, 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 fixed 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 fill fluid. 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: Specific gravity of fill fluid (at 25°C)
Fill fluid code A B C, E D
ds: Specific gravity 1.07 0.94 1.09 1.90 to
1.92
dHg: Specific 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 Tank
(Caution on Installation)
3.4 Affixing the Teflon Film
IMPORTANT
The FEP Teflon option includes a teflon film and
fluorinated oil. Before mounting the transmitter to the
process flange, affix the teflon film as follows:
1) Position the diaphragm so that the diaphragm is in
an upward position.
2) Pour the fluorinated 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) Affix the teflon film over the diaphragm and gasket
area.
4) Next, carefully inspect the cover and try to identify
any entrapped air between the diaphragm and
the teflon film.The air must be removed to ensure
accuracy. If air pockets are present, use your
fingers to remove the air by starting at the center of
the diaphragm and work your way out.
5) Place the gasket with the teflon film and affix to the
process flange.
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 Affixing the Teflon Film
Installation
3

<3. Installation> 18
IM 01C22A01-01E
3.5 Rotating Transmitter Section
The transmitter section can be rotated in 90° segments.
1) Remove the twoAllen screws that fasten the
transmitter section and capsule assembly, using the
Allen wrench.Also, remove the pipe for EJA530A
with Measurement span codeA, B, and C, using the
slotted screwdriver.
2) Rotate the transmitter section slowly in 90° segments.
3) Tighten the twoAllen 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 90oor 180osegments
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 anAllen head
bolt (a shrouding bolt) on CENELEC and IECEx
flameproof type transmitters. When the shrouding bolt
is driven clockwise by anAllen 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