IM 1F6A0-01E
iv
INTRODUCTION
INTRODUCTION
The DY series of vortex flowmeters have been fine-tuned to
your order specifications prior to shipment. Before use, read
this manual thoroughly and familiarize yourself fully with the
features, operations and handling of digitalYEWFLO to have
the instrument deliver its full capabilities and to ensure its
efficient and correct use.
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Notices Regarding This Manual
• This manual should be passed to the end user.
• The contents of this manual are subject to change without
prior notice.
• All rights reserved. No part of this document may be
reproduced or transmitted in any form or by any means
without the written permission of Yokogawa Electric
Corporation (hereinafter simply referred to as Yokogawa).
• This manual neither does warrant the marketability of this
instrument nor it does warrant that the instrument will suit
a particular purpose of the user.
• Every effort has been made to ensure accuracy in the
contents of this manual. However, should any questions
arise or errors come to your attention, please contact your
nearest Yokogawa sales office that appears on the back of
this manual or the sales representative from which you
purchased the product.
• This manual is not intended for models with custom
specifications.
• Revisions may not always be made in this manual in
conjunction with changes in specifications, constructions
and/or components if such changes are not deemed to
interfere with the instrument’s functionality or perfor-
mance.
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Notices Regarding Safety and Modification
• For the protection and safety of personnel, the instrument
and the system comprising the instrument, be sure to
follow the instructions on safety described in this manual
when handling the product. If you handle the instrument
in a manner contrary to these instructions, Yokogawa does
not guarantee safety.
• If this instrument is used in a manner not specified in this
manual, the protection provided by this instrument may be
impaired.
• As for explosionproof model, if you yourself repair or
modify the instrument and then fail to return it to its
original form, the explosion-protected construction of the
instrument will be impaired, creating a hazardous
condition. Be sure to consult Yokogawa for repairs and
modifications.
The following safety symbols and cautionary notes are
used on the product and in this manual:
WARNING
This symbol is used to indicate that a hazardous condi-
tion will result which, if not avoided, may lead to loss of
life or serious injury. This manual describes how the
operator should exercise care to avoid such a risk.
CAUTION
This symbol is used to indicate that a hazardous condi-
tion will result which, if not avoided, may lead to minor
injury or material damage. This manual describes how
the operator should exercise care to avoid a risk of bodily
injury or damage to the instrument.
IMPORTANT
This symbol is used to call your attention to a condition
that must be observed in order to avoid the risk of
damage to the instrument or system problems.
NOTE
This symbol is used to call your attention to information
that should be referred to in order to know the operations
and functions of the instrument.
Direct current.
