IM 01C25T02-01E
1-1
1. INTRODUCTION
1. INTRODUCTION
This manual is for the DPharp EJX Series Differential
Pressure/Pressure Transmitter Fieldbus Communication
Type. The Fieldbus communication type is based on
the same silicon resonant sensing technology used in
the BRAIN/HART communication type, and is similar
to the communication types in terms of basic perfor-
mance and operation. This manual describes only those
topics that are required for operation of the Fieldbus
communication type. For information on the installa-
tion, wiring, and maintenance of EJX series pressure
transmitters, refer to the user’s manual for each model.
Also note that the contents of this manual are appli-
cable for device revision 3 of EJX series pressure
transmitters. See a device information sheet attached to
the instrument to check the device revision.
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.
• 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.
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