<1. Introduction>
1-1
IM 01C25B01-01E
1. Introduction
Thank you for purchasing the DPharp EJX
Differential Pressure and pressure transmitter.
Your EJX Pressure Transmitter was precisely
calibrated at the factory before shipment. To ensure
bothsafetyandefciency,pleasereadthismanual
carefully before you operate the instrument.
This manual describes the hardware
congurationsofEJXseriestransmitters.For
informationonthesoftwarecongurationand
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
thoroughly before use.
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.
This manual covers the EJX110A, EJX120A
and EJX130A differential pressure transmitter,
EJX430A and EJX440A gauge pressure
transmitter and EJX310A absolute pressure
transmitter whose style codes are as described
in the following table.
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
instrument will differ from those shown in the
illustrations of the EJX110A.
Model Style code
EJX110A S3
EJX120A S1
EJX130A S2
EJX310A S2
EJX430A S2
EJX440A S2
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
tnessforaparticularpurpose.
• If any question arises or errors are found, or if
any information is missing from this manual,
please inform the nearest Yokogawa sales
ofce.
• Thespecicationscoveredbythismanualare
limited to those for the standard type under the
speciedmodelnumberbreak-downanddonot
cover custom-made instruments.
• Pleasenotethatchangesinthespecications,
construction, or component parts of the
instrumentmaynotimmediatelybereected
in this manual at the time of change, provided
that postponement of revisions will not cause
difcultytotheuserfromafunctionalor
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.
• The following safety symbols are used in this
manual:
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