User guide

<1. Introduction>
1-1
IM 01C25T03-01E
1. Introduction
Thank you for purchasing the DPharp EJX series
pressure transmitter/EJA series pressure
transmitter (“transmitter”).
The transmitters are precisely calibrated at the
factory before shipment. To ensure both safety and
efciency, please read this manual carefully before
operating the instrument.
This manual describes the BRAIN protocol
communication functions of the transmitter and
explains how to set the parameters for the
transmitters using the BT200 handheld terminal.
For information on the installation, wiring, and
maintenance of the transmitters, please refer to the
user’s manual of each model.
WARNING
When using the transmitter 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
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 Yokogawa sales
ofce.
• The specications covered by this manual are
limited to those for the standard type under the
specied model number break-down and do not
cover custom-made instruments.
• Please note that changes in the specications,
construction, or component parts of the
instrument may not immediately be reected
in this manual at the time of change, provided
that postponement of revisions will not cause
difculty 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: