Technical Reference Manual
DSGH®
Radiation-Based Detector with GEN2000®
Electronics for Density Measurement
Document ID:
31399
Nuclear
DSGH Technical Reference Manual 1
Revision history
Table 1: Revision History
Version Description Date
1.0 Initial release. Formerly 241528. 051201
1.1 Corrected website address for VEGA
Corrected copyright and registered marks 061211
1.2 Electronics revision 090306
1.3 Added certification information and IECex lable 090814
1.4 Changed company name, logo, and website 110301
1.5 Removed one point calibration 111121
Copyright© 2011 VEGA Americas, Inc., Cincinnati, Ohio. All rights reserved. This document contains proprietary
information of VEGA Americas, Inc. It shall not be reproduced in whole or in part, in any form, without the expressed
written permission of VEGA Americas, Inc. The material in this document is provided for informational purposes and
is subject to change without notice.
HART® is a registered trademark of The HART® Communication Foundation.
ISO 9001 approval by Lloyd’s Register Quality Assurance Limited, to the following Quality Management System
Standards: ISO 9001:2000, ANSI/ASQC Q9001-2000. Approval Certificate No. 107563.
GEN2000 electronics is a registered trademark of the VEGA Americas, Inc.
VEGA Americas, Inc
4170 Rosslyn Drive
Cincinnati, Ohio 45209-1599 USA
Voice:
(513) 272-0131
FAX:
(513) 272-0133
Website
www.vega-americas.com
WARNING
Use this equipment only in the manner that this manual describes. If the equipment is not
used per VEGA specifications, the unit is not CE compliant, and may be damaged or cause
personal injury.
Preface
2 DSGH Technical Reference Manual
NOTES
Preface
DSGH Technical Reference Manual 3
Contents
Revision history 1
Explanation of symbols 11
CHAPTER 1 : INTRODUCTION 13
Nuclear materials notice 13
Unpacking the equipment 14
Storing the equipment 15
Certifications 15
Specifications 17
Typical applications 18
System overview 18
Principle of operation 21
Communicating with the gauge 21
Using a universal hand-held terminal 21
Using VEGA View software on a PC 23
Using Ohmview 2000 Software on a PC 24
The HART screens menu structure 26
CHAPTER 2 : INSTALLATION 27
Testing on the bench 27
Location considerations 28
Mounting the measuring assembly 30
Wiring the equipment 31
Power 34
Output current loop 34
Communication 34
Process alarm override switch 34
Conduit 35
Commissioning the gauge 35
Can you remove the source holder lock? 35
Field service commissioning call checklist 36
CHAPTER 3 : CALIBRATION 38
Current loop (analog output) calibration 39
Preparing for calibration 42
Choosing the linearizer type 43
Equation 43
Table, non-linear 43
Table, linear 44
Recommended two-point calibration 45
When is a new calibration necessary? 48
Periodic process standardization 48
Automatic standardization reminder 48
Choosing a standardization method 49
Performing a standardization 51
CHAPTER 4 : ADVANCED FUNCTIONS 52
Process chain 52
Primary channel 52
Process variables 55
Auxiliary channel 56
Min/Max history 56
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