Vega DSGH User manual

Operating Instructions
DSGH®
Radiation-Based Detector with GEN2000®
Electronics for Density Measurement
Document ID:
31392
Nuclear

DSGH Installation and Operation Guide 1
Revision history
Copyright©2015 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.
GEN2000®is a registered trademark of the VEGA Americas, Inc. VEGA View and
Ohmview 2000 are trademarks of VEGA Americas, Inc.
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 9001:2008, ANSI/ASQC Q9001-2008,
Approval Certificate No. 107563.
VEGA Americas, Inc.
4170 Rosslyn Drive
Cincinnati, Ohio 45209-1599 USA
Tel: [phone]
Fax: [phone]
Website: www.vega.com/us
Field service E-mail: [email protected]
Version Description Date
1.0 Initial release. Formerly 245638-EN. 051201
1.1 Changed CD part number 32700, Corrected copyright and
registered symbols and date
061201
1.2 Electronics revision 090306
1.3 Added certification information and IECex label 090814
1.4 Changed logo, company name, and website 110301
1.5 Added excessive radiation note and changed to A5 format 130913
1.6 Updated certification information 140516
1.7 Added information about removing and replacing GEN2000
red threaded plugs. Updated certification information. 150921
Warning: To ensure CE compliance, use this equipment only in
the manner that this manual describes, per VEGA
specifications. Otherwise, damage to the unit or
personal injury may result.

2 DSGH Installation and Operation Guide
NOTES

DSGH Installation and Operation Guide 3
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Your comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Nuclear materials notice . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Unpacking the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Storing the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Source holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Safety Information for EX Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DSGH specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Source holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Detector assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Communicating with the gauge . . . . . . . . . . . . . . . . . . . . . . . . 21
Using a field communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Using Ohmview 2000 Software on a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
U.S. and Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Worldwide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Have this information ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Testing on the bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Location considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Vertical pipe with upward flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Pump considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
No line hammering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Stable temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Protect insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
No air entrainment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Standardization considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Avoid source cross-talk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Mounting the measuring assembly . . . . . . . . . . . . . . . . . . . . . . 29
Wiring the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Remove and Replace Red Threaded Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table of Contents

4 DSGH Installation and Operation Guide
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Switch for CE compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Output current loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
RS-485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Process alarm override switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Commissioning the gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Field service commissioning call checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Current loop (analog output) calibration . . . . . . . . . . . . . . . . . . . 41
Measuring the current loop output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Choosing the linearizer type . . . . . . . . . . . . . . . . . . . . . . . . . 44
Checking the gauge repeatability . . . . . . . . . . . . . . . . . . . . . . . 46
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
1 Setting the low density and collecting Cal Low data . . . . . . . . . . .47
2 Setting the high density and collecting Cal High data . . . . . . . . . . .49
3 Calculating the calibration . . . . . . . . . . . . . . . . . . . . . . . . . .50
Repeating the calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Periodic standardization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Standardization reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Standardization on water . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Standardization on process . . . . . . . . . . . . . . . . . . . . . . . . . .52
Standardization on absorber plates . . . . . . . . . . . . . . . . . . . . .52
Advanced functions . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Process chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Gauge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Process Variables tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Gauge Info tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Min/Max History tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
New hardware or corrupt EEPROM . . . . . . . . . . . . . . . . . . . . . 61
New Hardware tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Responding to the New hardware found message . . . . . . . . . . . . . . . . . . . . . . 62
When new hardware is installed . . . . . . . . . . . . . . . . . . . . . . .62
When new hardware is not installed . . . . . . . . . . . . . . . . . . . . .62
Test modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Test tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Current Loop Test (milliamp output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Auxiliary Input Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

DSGH Installation and Operation Guide 5
Relay Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Temperature Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Selecting the transmitter’s type and location . . . . . . . . . . . . . . . . 67
Gauge Setup tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Diagnostics and repair . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Software diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Gauge Status tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Diagnostic alarms and HART messages . . . . . . . . . . . . . . . . . . 70
Relay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Gauge status diagnostics screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Acknowledging diagnostic alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Diagnostic alarm messages . . . . . . . . . . . . . . . . . . . . . . . . .72
Analog alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Process alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
X-ray alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Auxiliary x-ray alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
History information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Diag History tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Circuit board identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
CPU board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Maintenance and repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Periodic maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Source Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Recording the source wipe and shutter check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Field repair procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Replacing the CPU or power supply board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Requesting field service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Returning equipment for repair to VEGA . . . . . . . . . . . . . . . . . . . 90

6 DSGH Installation and Operation Guide
NOTES

DSGH Installation and Operation Guide 7
Preface
Chapter 0PREFACE
Explanation of symbols
In the manual Radiation notice
Introduces information concerning radioactive materials or
radiation safety.
Caution
Introduces warnings concerning potential damage to the
equipment or bodily harm.
On the instrument AC current or voltage
A terminal to which or from which an alternating (sine wave)
current or voltage may be applied or supplied.
DC current or voltage
A terminal to which or from which a direct current voltage may
be applied or supplied.
Potentially hazardous voltages
A terminal on which potentially hazardous voltage exists.
Protective ground terminal
Identifies location of terminal intended for connection to an
external conductor.

8 DSGH Installation and Operation Guide
Preface
Your comments
Manual: DSGH Installation and Operation Guide
Date: ______________
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DSGH Installation and Operation Guide 9
Preface
Please send your comments to:
VEGA Americas, Inc.
Director of Engineering
4241 Allendorf Drive
Cincinnati, OH 45209-1599 USA
Fax: [phone]

10 DSGH Installation and Operation Guide
Preface
NOTES

DSGH Installation and Operation Guide 11
Introduction
CHAPTER
1
Chapter 1INTRODUCTION
Nuclear materials notice
This equipment contains radioactive source material that emits gamma
radiation. Gamma radiation is a form of high-energy electromagnetic
radiation. In many cases, only persons with a specific license from the U.S.
NRC or other nuclear regulatory body may perform the following to the
source holder:
• Dismantle
•Install
• Maintain
•Relocate
•Repair
• Test
VEGA Field Service engineers have the specific license to install and
commission nuclear gauges, and can instruct you to safely operate your
gauge. See page 1-24 for contact information.
Note: See the Radiation Safety for U.S. General and Specific
Licensees, Canadian and International Users Manual that came
with the source holder and the appropriate current regulations
for details.

12 DSGH Installation and Operation Guide
Introduction
Unpacking the equipment
Unpack the unit in a clean, dry area.
Inspect the shipment for completeness. Check against the packing slip.
Inspect the shipment for damage during shipment or storage.
If the detector is included as a separate package in the shipment,
inspect the assembly for damage that may have occurred during
shipment or storage.
If there was damage to the unit during shipment, file a claim against the
carrier, reporting the damage in detail. Any claims against VEGA for
shortages, errors in shipment, etc., must be made within 30 days of
receipt of the shipment.
If you must return the equipment, see the section Returning equipment
for repair to VEGA in the “Diagnostics and repair” chapter.
After unpacking the equipment, inspect each source holder in the
shipment to ensure that the operating handle is in the OFF position. If
you find the handle in the ON position, place it in the OFF position
immediately and secure it. Note: This applies to only some source
holders.
Caution: You must be familiar with radiation safety practices in
accordance with your U.S. Agreement State, U.S. NRC, or other nuclear
regulatory body before unpacking the equipment.
Note: Most source holder models accept a lock. Call VEGA Field
Service (see page 1-24 for contact information) for more
instructions if:
lThe source holder does accept a lock and there is no lock on it.
lThe lock is not secured.
lYou cannot secure the lock.
lThe operating handle does not properly move into the OFF
position.
See the Radiation Safety for U.S. General and Specific Licensees,
Canadian and International Users Manual that came with the source
holder and the appropriate current regulations for details.

DSGH Installation and Operation Guide 13
Introduction
Storing the equipment
Source holder
If you must store it, do so in a clean, dry area. Be sure its shutter is in the
OFF or CLOSED position (if applicable). Check the current local regulations
(U.S. NRC, Agreement State, or other) to determine whether this area must
have any restrictions.
Gauge
Avoid storage at temperatures below freezing. Store the gauge indoors in
an area that has temperature control between +10 °C ... +35 °C (+50 °F ...
+95 °F) and < 50% relative humidity. Store equipment in dry conditions until
installation.
Certifications
This gauge is designed for certification compliance from the following
agencies”
• ATEX Standard
• CCOE (India)
• CEPEL/INMETRO (Brazil)
•CSA
• FM Standard
•IECex
•JIS(Japan)
• NEPSI (China)

14 DSGH Installation and Operation Guide
Introduction
Safety Information for EX Areas
Please note the EX-specific safety information for installation and operation
in EX areas.
IECex Label

DSGH Installation and Operation Guide 15
Introduction
DSGH specifications
Table 1.1 DSGH specifications
System
Accuracy ±1% of span typical Accuracy depends on specific application parameters
Typical
Sources Cesium-137 0.66 MeV gamma radiation emitter, 30.2 year half life
Cobalt-60 1.2 and 1.3 MeV gamma radiation emitter, 5.3
year half life
Power
Requireme
nts*
AC 100 – 230 ±10% VAC (90 – 250 VAC, or with
internal heater kit: 115 – 230 VAC) at 50 ... 60 Hz,
at 15 VA maximum power consumption (25 VA 
with heater) CE compliance requires 100 – 230
±10% VAC
DC 20 – 60 VDC (< 100 mV, 1 ... 1,000 Hz ripple)
at 15 VA
CE compliance requires 24 VDC ± 10%
Wiring Per local code
Signal
Cable Maximum length 1,000 m (3,280')
HART signal 1.02 – 0.643 mm (no. 18 or 20 AWG) 2-conductor
shielded

16 DSGH Installation and Operation Guide
Introduction
GEN2000®
Electronics
Housing
4-wire
hookup with
DC
1.02 – 0.643 mm (no. 18 or 20 AWG) 4-conductor
shielded
Certification
to CSA and
UL
standards
• Designed to meet National Electric Code (U.S.
and Canada)
• Class l, Groups A, B, C and D, Div 1 and 2
• Class ll, Groups E, F and G, Div 1 and 2
ATEX
Certification II 2 G Ex d IIC T6 Gb
II 2 G Ex d IIB+H2 T6 Gb
II 2 D Ex tb IP66 T60°C Db
Enclosure
rating NEMA 4X IP-66
Ambient
temperature -20 °C ...+60 °C (-4 °F ...+140 °F) option for lower
temperatures available
Humidity 0 – 95%, non-condensing
Vibration Tested to IEC 68-2-6, IEC 68-2-27, and IEC 68-2-
36
Material Cast aluminum ASTM A 357
Paint Polyester Powder Coating
Table 1.1 DSGH specifications (continued)

DSGH Installation and Operation Guide 17
Introduction
* Power specifications change if an internal heater kit is used.
Typical applications
VEGA’s density gauges accurately indicate:
• Density of liquids or slurries through a pipe or vessel wall without contact
to the material
• Percent of solids in a carrier
• Interface between liquids flowing in a pipe, when the liquids differ in
density
Weight Housing
detector 5.44 kg (12 lb)
Current
Loop
Output
Rating 4 mA ... 20 mA, isolated, into 250 – 800 
Power Jumper selectable: source (active) or sink
(passive) mode
Relay
Output Software user-
settleable
Diagnostic alarm or process high/low alarm
function
Rating 6 A at 240 VAC, or 6 A 24 VDC (SPDT Form C),
or 1/4 HP at 120 VAC
HART®
Communic
ation
HART
Protocol BEL202 FSK standard current loop output
PC interface HART modem and VEGA communications
software
Optional
hand-held
interface
Emerson Field Communicator model 375 with
VEGA device descriptions loaded
Auxiliary
Input
Capability
Type Frequency input (0 ... 100 kHz)
Possible
function Optional Mass Flow or Temperature compensation, multiple gauge linking, and others
Electronics On-board
memory FLASH and 2 EEPROMs
Real-time
clock Maintains time, date, source decay compensation, and is Y2K compatible
Diagnostic
sLED indication +6V, Memory Corruption, HART, CPU Active, Auxiliary, High Voltage, Relay and Field Strength
Table 1.1 DSGH specifications (continued)

18 DSGH Installation and Operation Guide
Introduction
Principle of operation
The gauge receives a shaped or collimated beam of radiation from the
source holder through the process material. The material in the vessel
shields part of the detector from exposure to the radiation field. As the
process material mass decreases, the detector senses more radiation, and
vice versa.
Calibrating the gauge associates the detector readings (or counts) with the
density of the material in engineering units. Theoutput range of the gauge is
a 4 mA ... 20 mA current loop signal, in proportion to the density of the
process.
System overview
The gauge uses VEGA’s GEN2000®, VEGA’s newest compact electronics
that support 4 mA ... 20 mA HART®protocol, frequency, or fieldbus output.
The density measurement system includes:
• Source holder
• Detector assembly
• Communication device (HART modem with PC and VEGA software or
Emerson Field Communicator 375)