YOKOGAWA DpharpEJX vigilantplant EJX110 User manual

User’s
Manual
Y
oko
g
awa Electric Cor
p
oration
EJX110A, EJX130A, EJX310A,
EJX430A and EJX440A
Differential Pressure and
Pressure Transmitters IM 01C25B01-01E
IM 01C25B01-01E
5th Edition

i
CONTENTS
IM 01C25B01-01E
FD No. IM 01C25B01-01E
5th Edition: July 2006(YK)
All Rights Reserved, Copyright © 2004, Yokogawa Electric Corporation
CONTENTS
1. INTRODUCTION............................................................................................1-1
Regarding This Manual................................................................................. 1-1
1.1 Safe Use of This Product.................................................................... 1-2
1.2 Warranty.............................................................................................. 1-3
1.3 ATEX Documentation.......................................................................... 1-4
2. HANDLING CAUTIONS ................................................................................2-1
2.1 Model and Specifications Check......................................................... 2-1
2.2 Unpacking ........................................................................................... 2-1
2.3 Storage................................................................................................ 2-1
2.4 Selecting the Installation Location ...................................................... 2-2
2.5 Pressure Connection........................................................................... 2-2
2.6 Waterproofing of Cable Conduit Connections .................................... 2-2
2.7 Restrictions on Use of Radio Transceivers ........................................ 2-2
2.8 Insulation Resistance and Dielectric Strength Test............................ 2-2
2.9 Installation of an Explosion-Protected Instrument .............................. 2-3
2.9.1 FM Approval ................................................................................. 2-3
2.9.2 CSA Certification .......................................................................... 2-5
2.9.3 CENELEC ATEX (KEMA) Certification ........................................ 2-7
2.9.4 IECEx Certification ..................................................................... 2-10
2.10 EMC Conformity Standards .............................................................. 2-11
2.11 Pressure Equipment Directive (PED) ............................................... 2-11
2.12 Low Volage Directive ........................................................................ 2-12
3. COMPONENT NAMES..................................................................................3-1
4. INSTALLATION.............................................................................................4-1
4.1 Precautions ......................................................................................... 4-1
4.2 Mounting.............................................................................................. 4-1
4.3 Changing the Process Connection ..................................................... 4-2
4.4 Swapping the High/Low-pressure Side Connection ........................... 4-3
4.4.1 Rotating Pressure-detector Section 180°..................................... 4-3
4.4.2 Using the Communicator.............................................................. 4-3
4.5 Rotating Transmitter Section .............................................................. 4-4
4.6 Changing the Direction of Integral Indicator ....................................... 4-4
5. INSTALLING IMPULSE PIPING...................................................................5-1
5.1 Impulse Piping Installation Precautions .............................................. 5-1
5.1.1 Connecting Impulse Piping to a Transmitter................................ 5-1
5.1.2 Routing the Impulse Piping .......................................................... 5-2
5.2 Impulse Piping Connection Examples ................................................ 5-4
6. WIRING..........................................................................................................6-1
6.1 Wiring Precautions .............................................................................. 6-1
6.2 Selecting the Wiring Materials ............................................................ 6-1
6.3 Connections of External Wiring to Terminal Box................................ 6-1
6.3.1 Power Supply Wiring Connection ................................................ 6-1

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CONTENTS
IM 01C25B01-01E
6.3.2 External Indicator Connection ...................................................... 6-1
6.3.3 Communicator Connection........................................................... 6-1
6.3.4 Check Meter Connection.............................................................. 6-2
6.3.5 Status Output Connection ............................................................ 6-2
6.4 Wiring .................................................................................................. 6-2
6.4.1 Loop Configuration ....................................................................... 6-2
(1) General-useType and Flameproof Type ..................................... 6-2
(2) Intrinsically Safe Type ................................................................. 6-2
6.4.2 Wiring Installation ......................................................................... 6-2
(1) General-useType and Intrinsically SafeType ............................. 6-2
(2) Flameproof Type ......................................................................... 6-3
6.5 Grounding............................................................................................ 6-3
6.6 Power Supply Voltage and Load Resistance ..................................... 6-3
7. OPERATION..................................................................................................7-1
7.1 Preparation for Starting Operation...................................................... 7-1
7.2 Zero Point Adjustment ........................................................................ 7-2
7.2.1 Adjusting Zero Point for Differential Pressure Transmitters ........ 7-3
7.2.2 Adjusting Zero Point for Gauge/Absolute Pressure Transmitters .. 7-3
7.3 Starting Operation ............................................................................... 7-3
7.4 Shutting Down the Transmitter ........................................................... 7-4
7.5 Venting or Draining Transmitter Pressure-detector Section............... 7-4
7.5.1 Draining Condensate.................................................................... 7-4
7.5.2 Venting Gas.................................................................................. 7-4
7.6 Setting the Range Using the Range-setting Switch ........................... 7-5
8. MAINTENANCE.............................................................................................8-1
8.1 Overview ............................................................................................. 8-1
8.2 Calibration Instruments Selection ....................................................... 8-1
8.3 Calibration ........................................................................................... 8-1
8.4 Disassembly and Reassembly............................................................ 8-3
8.4.1 Replacing the Integral Indicator ................................................... 8-3
8.4.2 Replacing the CPU Board Assembly ........................................... 8-4
8.4.3 Cleaning and Replacing the Capsule Assembly.......................... 8-4
8.4.4 Replacing the Process Connector Gaskets ................................. 8-5
8.5 Troubleshooting................................................................................... 8-6
8.5.1 Basic Troubleshooting.................................................................. 8-6
8.5.2 Troubleshooting Flowcharts ......................................................... 8-7
8.5.3 Alarms and Countermeasures ..................................................... 8-9
9. GENERAL SPECIFICATIONS ......................................................................9-1
9.1 Standard Specifications ...................................................................... 9-5
9.2 MODEL AND SUFFIX CODES........................................................... 9-4
9.3 OPTIONAL SPECIFICATIONS ......................................................... 9-10
9.4 DIMENSIONS.................................................................................... 9-13
REVISION RECORD
When using the EJX in a Safety Instrumented Systems(SIS) application,
refer to Appendix A in either IM 01C25T01-01E for the HART protocol or
IM 01C25T03-01E for the BRAIN protocol.

IM 01C25B01-01E
1-1
1. INTRODUCTION
1. INTRODUCTION
Thank you for purchasing the DPharp EJX Differential
Pressure and pressure transmitter.
Your EJX Pressure Transmitter was precisely cali-
brated at the factory before shipment. To ensure both
safety and efficiency, please read this manual carefully
before you operate the instrument.
NOTE
This manual describes the hardware configura-
tions of EJX series transmitters. For information
on the software configuration and operation,
please refer to either IM 01C25T03-01E for the
EJX series BRAIN communication type or
IM 01C25T01-01E for the EJX series HART
communication type.
For FOUNDATION Fieldbus protocol type,
please refer to IM 01C25T02-01E.
To ensure correct use of this instrument, read
both the hardware and software manuals thor-
oughly before use.
WARNING
When using the EJX in a Safety Instrumented
Systems (SIS) application, refer to Appendix A in
either IM 01C25T01-01E for the HART protocol
or IM 01C25T03-01E for the BRAIN protocol.
The instructions and procedures in this section
must be strictly followed in order to maintain the
transmitter for this safety level.
NOTE
This manual covers the EJX110A and EJX130A
differential pressure transmitter, EJX430A and
EJX440A gauge pressure transmitter, and
EJX310A absolute pressure transmitter.
Unless otherwise stated, the illustrations in this
manual are of the EJX110A differential pressure
transmitter. Users of the other models should
bear in mind that certain features of their instru-
ment will differ from those shown in the illustra-
tions of the EJX110A.
Regarding This Manual
•This manual should be provided 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 responsi-
bility for any such harm owing to any defects in the
product which were not predictable, or for any
indirect damages.

IM 01C25B01-01E
1-2
1. INTRODUCTION
•The following safety symbols are used in this
manual:
WARNING
Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious
injury.
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 Safe Use of This Product
For the safety of the operator and to protect the
instrument and the system, please be sure to follow this
manual’s safety instructions when handling this
instrument. If these instructions are not heeded, the
protection provided by this instrument may be im-
paired. In this case, Yokogawa cannot guarantee that
the instrument can be safely operated. Please pay
special attention to the following points:
(a) Installation
•This instrument may only be installed by an engi-
neer or technician who has an expert knowledge of
this device. Operators are not allowed to carry out
installation unless they meet this condition.
•With high process temperatures, care must be taken
not to burn yourself by touching the instrument or
its casing.
•Never loosen the process connector nuts when the
instrument is installed in a process. This can lead to
a sudden, explosive release of process fluids.
•When draining condensate from the pressure
detector section, take appropriate precautions to
prevent the inhalation of harmful vapors and the
contact of toxic process fluids with the skin or eyes.
•When removing the instrument from a hazardous
process, avoid contact with the fluid and the interior
of the meter.
•All installation shall comply with local installation
requirements and the local electrical code.
(b) Wiring
•The instrument must be installed by an engineer or
technician who has an expert knowledge of this
instrument. Operators are not permitted to carry out
wiring unless they meet this condition.
•Before connecting the power cables, please confirm
that there is no current flowing through the cables
and that the power supply to the instrument is
switched off.
(c) Operation
•Wait 5 min. after the power is turned off, before
opening the covers.