Yokogawa EJX440A - Manual (Page 6)

<1. Introduction>
1-1
IM 01C25T01-01E
1. Introduction
Thank you for purchasing the DPharp EJX
electronic pressure transmitter.
EJX pressure transmitters are precisely calibrated
at the factory before shipment. To ensure both
safety and efficiency, please read this manual
carefully before operating the instrument.
This manual describes the HART protocol
communication functions of the EJX series and
explains how to set the parameters for EJX
series pressure transmitters using the 275 HART
Communicator. For information on the installation,
wiring, and maintenance of EJX series pressure
transmitters, please refer to the user’s manual of
each model.
WARNING
When using the EJX in a Safety Instrumented
Systems (SIS) application, refer to Appendix 1
in this manual. The instructions and procedures
in the appendix must be strictly followed in order
to maintain the designed safety integrity of the
transmitter.
 Regarding This Manual
• This manual should be provided 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.
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
impaired. In this case, Yokogawa cannot guarantee
that the instrument can be safely operated. Please
pay special attention to the following points: