VLI™
Visible Level Interface
Operation & Maintenance Manual
© 1998 - 2007 DH Instruments, a Fluke Company
© 1998 - 2007 DH Instruments, a Fluke Company All rights reserved.
Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a
Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.
DH Instruments makes sincere efforts to the ensure accuracy and quality of its’ published materials; however, no warranty,
expressed or implied, is provided. DH Instruments disclaims any responsibility or liability for any direct or indirect damages
resulting from the use of the information in this manual or products described in it. Mention of any product does not constitute an
endorsement by DH Instruments of that product. This manual was originally composed in English and subsequently translated into
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language versions, the English version takes precedence.
DH Instruments, DH, DHI, DH400 and VLI are trademarks, registered and otherwise, of DH Instruments, a Fluke Company.
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© 1998 - 2007 DH Instruments, a Fluke Company
TABLE OF CONTENTS
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TABLE OF CONTENTS ...............................................................I
1. INTRODUCTION ................................................................. 1
1.1 PRODUCT OVERVIEW ...........................................................................................................................1
1.2 OPERATING PRINCIPLE........................................................................................................................1
1.3 COMPONENT LOCATION ......................................................................................................................1
2. INSTALLATION .................................................................. 3
2.1 UNPACKING AND INSPECTION............................................................................................................3
2.2 INITIAL SETUP........................................................................................................................................3
2.3 OPERATION............................................................................................................................................4
2.3.1 INTERFACING TWO LIQUIDS (OIL, WATER, ETC.) ...................................................................................4
2.3.2 INTERFACING A GAS WITH A LIQUID .......................................................................................................4
3. MAINTENANCE .................................................................. 5
ANNEX.................................................................................... 7
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VLI™ OPERATION & MAINTENANCE MANUAL
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