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1. e 1 11 Chapter 2 Installation ooooooooooommmm 2 1 Testing ON the bench 2 aaa a 2 1 Location considerations 2 e e 2 2 Vertical pipe with upwardflow 2 2 a 2 2 Pump considerations 2 tak pae nae A e a g e i O e 2 2 No line hammering a 2 2 Stable temperature a 2 3 Protectinsulation o 2 3 Noalirentraldment a 2 3 Standardization considerations o e e 2 3 Avoid source cross talk o o 2 3 Mounting the measuring assembly 2 2 0 ee e e 2 4 Wiring the equipment 2 a 2 5 POWER co Sate heehee yo Bae Ge eee ares ees Gy es Ay tS ree a en a te e h 2 7 Switch for CE compliance ao ao a 2 7 Output currentloop a 2 7 Relays 30 Es hee eee oe bd hata ewe ae ew eee SS 2 7 AS BT a dee ee 2 7 Communication Co 40h a Pa ee ea ee Ee Eee ee bee ee ee 2 8 Process alarm override switch oaoa e o 2 8 Conduit as tec ty tate ae ttn a tee ee eon eh tee ep eee the 2 8 Commissioning the gauge 2 2 ee a 2 9 Field service commissioning call checklist 20 20 0000 050 0G 2 9 Chapter 3 Calibration oooooooooorrnmmmmo 3 1 Current loop analog output calibration 0 3 1 Measuring the current loop output o e ee 3 2 Choosing the linearizer type o ee 3
2. Usually made of lead e Insert into slots in front of the gauge e Require a mounting kit from VEGA e Require the use of the same plates to ensure a consistent absorption of radiation this is a substitute for the radiation absorption of the material in the pipe Requires emptying process from the pipe and access to the measuring assembly gt Procedure 3 7 To standardize the gauge Tle Communication Liites Montor Heip Firmware Version 1 00 Tog DEMO Type Density 2PoitCatbraton Y Point Calibration OntaCotect Selec Tabs Linaonizer Oota Pt Process blo Setup Commu urent Loop Cat Colioretion Gouge ito Diagnostics Alarms Emone Lnearizor Typo Tatie Non ines Stats Disconnect Note You cannot use absorber plates for the initial process calibration You must determine the equivalent value of the absorber plates after the initial process calibration of the density gauge when the gauge was mounted to the pipe 1 Select Calibration Standardize 2 Click Execute DSGH Installation and Operation Guide Calibration Click OK Enter the reading Click Start Click Accept Enter the process value Click OK Click OK O OY ON A DSGH Installation and Operation Guide 3 11 Calibration 3 12 DSGH Installation and Operation Guide CHAPTER ADVANCED FUNCTIONS Functions not required for normal operation of the gauge are in the Ohmvi
3. regulations Table 5 9 Periodic maintenance schedule Description Frequency Procedure Standardize As required by process conditions usually at least once a month Calibration chapter Source holder shutter check Every 6 months unless otherwise required by the appropriate nuclear regulatory body Radiation safety instructions shipped separately with source holder and following instructions Source wipe Every 3 years unless otherwise required by the appropriate nuclear regulatory body Radiation safety instructions shipped separately with source holder and following instructions DSGH Installation and Operation Guide 5 13 Diagnostics and repair Source Functions Ohmview 2000 Version 2 0 0 3 File Communication Utilities Monitor Help la xi Firmware Version 1 00 Tag DEMO Type Level Communication Statistics 100 Select Tabs Gauge Setup Cal Parameters PY Units Spans Filtering Source Functions System Info Aux Input Process Info Setup Wipe Interval 100 days Calibration Type nt Wi 1 C3137 Next Wipe 00 days Gouge Info C Cobb Record Wipe A C Am241 Diagnostics C 0f252 C none Alarms Shutter Check Interval days Next Shutter Check 100 days Linearizer Type Record Shutter Check Table Non linear Status Disconnect Recording the source wipe and shutter check You can use the gauge s diagnostic alarms to re
4. Auxiliary Input Type Frequency input 0 100 kHz Capability 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 Diagnostics LED indication 6V Memory Corruption HART CPU Active Auxiliary High Voltage Relay and Field Strength 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 e Percent of solids in a carrier Interface between liquids flowing in a pipe when the liquids differ in density DSGH Installation and Operation Guide 1 5 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 The output range of the gauge is a4 mA 20 mA current loop signal in proportion to the density of the process System overview The gaug
5. 5 blinks Memory mismatch ON solid combination of errors HART HART ON blinks when None Check HART device communication receiving HART connection on loop and indicator messages HART device functioning CPU Central Blinks at rate of 1 time per LED does not Check power input processing unit second blink CPU not Replace CPU board on CPU board functioning Aux Auxiliary input Blinks if auxiliary input None Check auxiliary input frequency present OFF if no wiring terminals 11 and signal indicator auxiliary input present 12 with a meter for frequency signal Check auxiliary input equipment 5 12 DSGH Installation and Operation Guide Diagnostics and repair Table 5 8 CPU board LED summary LED Description Normal condition Error condition Recommendation HV Sensor high ON high voltage is OFF high Call VEGA Field Service voltage within specification voltage is outside of specification Field Radiation field Cycles in proportion to None indicator radiation field intensity at Check for closed source detector ON for 10 seconds for each mR hr then off for 2 seconds Can use LED 5 that blinks 1 time sec to time LED1 for field indicator shutter buildup and insulation Maintenance and repair Periodic maintenance schedule Since the VEGA gauge contains no moving parts very little periodic maintenance is required We suggest this schedule to prevent problems and comply with radiation
6. Counts Low The temperature and sensor uniformity gain compensated counts from the sensor at the Cal low density Determining the Cal low density occurs during the calibration Counts High The temperature and sensor uniformity gain compensated counts from the sensor at the Cal high density Determining the Cal high density occurs during the calibration Sensor Temp Comp Gain The current value of the temperature compensation gain Use this to adjust for inherent sensor output change with temperature Uniformity Gain Displays the current value of the uniformity gain Use this to force all density gauge sensors to output the same counts at a given radiation field Source Decay Gain The current value of the source decay gain Use this to compensate for the natural decay of the radiation source which produces a lower field over time Stdz Gain The current value of the standardize gain that adjusts with each standardize procedure HV Setting The set point for the sensor high voltage DSGH Installation and Operation Guide 4 3 Advanced functions Gauge Info tab ol xi File Communication Utilities Monitor Help Nan Scintillator sensor voltage Tag DEMO Type Density Communication Statistics 1002 Select Tabs Process Variables Min Max History Firmware s version on the i FLASH acess Info Sensor Voltage 1000 SE PGES E Hardware s version number Calibratio
7. D y Board Terminal Block _ _ 4 RS 485 ground 2 if applicable 6 Internal Housing CPU Board Ground Screw Mounting Bracket a Ye YES GEN2000 DSGH Installation and Operation Guide 1 7 Introduction Communicating with the gauge The gauge is a transmitter that produces the current loop signal directly at the measurement site Use a field communicator or HART modem and Ohmview 2000 software with a PC to enable e Initial setup e Calibration e Other communication with the gauge You can make a connection anywhere along the 4 mA 20 mA current loop line After setup and calibration of the gauge there are no everyday requirements for external electronics Using a field communicator VEGA s gauge is compatible with the Emerson 375 Field Communicator or equivalent To function the minimum load resistance on the 4 mA 20 mA loop must be 250 Q See the instruction manual for your field communicator for information about e Key usage Data entry e Equipment interface To effectively use the gauge features you must use VEGA s device description DD to program the HART communicator You can purchase a field communicator programmed with the DD through VEGA VEGA part number 244880 Use firmware 2000 00 or higher when you use the field communicator to use NORM or vapor compensation gt Note There are some minor differences in operation of the Ohmview 2000 software and the field communicator Most
8. Procedure 4 2 To reset the min max history 1 Select Gauge Info Min Max History 2 Click Reset History New hardware or corrupt EEPROM The gauge contains 2 EEPROMs electrically erasable programmable read only memory that store all data specific to that sensor electronics pair for the installation The EEPROMs are located e On the CPU board e On the sensor board Each EEPROM contains a backup of the other The system monitors both EEPROMs at power up to ensure accurate backups If you install a new CPU board the EEPROM performs a backup of information on the CPU The sensor boards memory does not match the CPU board memory The software DSGH Installation and Operation Guide 4 5 Advanced functions signals the discrepancy with an error message The gauge does not perform a backup in case the discrepancy is due to EEPROM corruption rather than new hardware gt Note Only use the New hardware functions if you replace the CPU or sensor assembly These functions are unnecessary if installing a new detector assembly which includes the CPU board and the sensor assembly New Hardware tab Frmware Version 1 00 Teg DEMO Twe Density Commurication Stahehce 100 Solect Tabe FrocessChain Test Gauge Sus Disgnostce STDZ History Ding History Now Hardware Process Info Setup Coltbrenon Gouge kto Diegnostcs New Sensor Alums Lneorizer Type Table Non inea Status Disconnect Responding t
9. data collect on sample to check interval 3 6 DCS 2 11 device description 1 10 Diagnostic alarm 5 1 diagnostic alarm acknowledging 5 4 messages 5 4 resetting relay 5 4 diagnostic history 5 9 Disconnect switch 2 8 E EEPROM corruption repair 4 8 equation linearizer 3 5 F Field service checklist 2 1 1 Field service See VEGA Customer Service 1 13 Firmware s version on the FLASH 4 5 G gain 3 10 Gauge Info 4 5 Gauge Info tab 4 5 Gauge info tab 4 5 GEN2000 CPU board s serial numbe 4 5 GEN2000 density gauge wiring 2 9 GEN2000 unit s serial numbe 4 5 ground screw 2 6 ground screw internal and external 2 6 H hand held terminal 1 10 Hardware s version number 4 5 HART Communicator 1 10 HART load resistance 1 10 History information 5 9 HV Setting 4 4 DSGH Installation and Operation Guide Index initial calibration repeating 3 12 Interconnecting terminals 2 7 J Jumper settings 5 12 jumpers 5 12 L Last reset 4 6 LED indicators 5 12 LEDs 5 11 Level instead of density is indicated See Select gauge type 4 14 linearizer choosing 3 4 M maintenance schedule 5 15 Max level 4 4 Min level 4 4 Min Max History 4 6 N New hardware advanced function 4 7 New hardware found alarm acknowledge 5 5 diagnostics check 5 5 in diagnostic history 5 9 New hardware found message responses to 4 8 O Ohmart Customer Service 1 13 Field Servic
10. endpoints of the calibration curve A direct measurement of the current is preferable hook the meter up in series with the instrument and the DCS However if you know the resistance of the DCS use a voltage measurement to calculate the current Measuring the current loop output DCS Ri Ri 5 7 A Current meter Voltmeter EERERERLELEE Detector Terminal block pins Detector Terminal block pins housing 13 and 14 housing 13 and 14 Before a current loop calibration M Connect an ammeter or the DCS to Terminal connections 13 mA and 14 mA Test points H1 and H2 Anywhere along the current loop M Make sure there is a 250 800 Q load on the current loop If no load or an insufficient load exists on the loop it may require temporary placement of a resistor across terminals 13 and 14 Hook the meter or DCS in series with the load resistor 3 2 DSGH Installation and Operation Guide Calibration 101 x Famware Version 1 00 5 Select Tobe 2 Port Cabbraton 1 Point Calibra on LineenrerOem Ft Osta Collect Curent Loop Cot Seedardia Cellbresjon Connect a reference meter and hen pres Exec Gauge Ife f beam Disconnect Procedure 3 1 To calibrate the current loop Select Calibration Current Loop Cal Click Execute Click OK Read the ammeter enter the actual milliamp reading Se No gt Note If using a voltmeter calculate the current value Click OK Click YES if the a
11. gauge s current output remove the system from automatic control before entering a test mode as prompted by the software screens Test tab Current Loop Test milliamp output This mode manually forces the current output to a specified value This is useful for verifying the current loop calibration To calibrate the current loop see Chapter 3 Calibration Procedure 4 5 To perform a current loop test Select Diagnostics Test Current Loop Test Click Enter Remove the gauge from control Po NS Enter the current loop test value DSGH Installation and Operation Guide 4 7 Advanced functions 5 Click OK The transmitter functions in this mode until it times out 1 hour or you click Exit and OK Sensor Test This mode simulates the sensor output at a number of raw counts you define This is before application of Temperature compensation e Sensor uniformity gain e Standardize gain The true sensor output is ignored while the transmitter is in sensor test mode This mode is useful for verifying the electronics and software response to input counts without having to e Change the process e Shield the source e Vary the radiation field While in this mode after entering a number of counts it may be useful to look at the Process Chain tab to view the variables affected by the raw counts value Procedure 4 6 To perform a sensor test Select Diagnostics Test Sensor Test Click Enter Remove
12. in the On or Open position to create the required radiation field M Extreme build up on walls or other material shielding the detector from the radiation field M Damage or disconnection of electrical connections from the sensor assembly to the CPU board Process alarm This alarm alerts users when the process density is above high limit or below low limit a setpoint Enter the choice of low or high limit and the setpoint on the Alarm Relay Setup tab This alarm works only with the output relay HART messages gauge status diagnostics and history information are not saved for this alarm The gauge acknowledges or resets the process alarm when the process value returns to the setpoint value Depending on your usage of the process alarm relay you may install a process alarm override switch to manually turn off an annunciator when the gauge relay energizes X ray alarm This alarm compensates for falsely indicated process values that occur when the gauge detects external radiographic sources example vessel weld inspections often use portable radiographic x ray sources X rays that the gauge detects can cause a false low reading and adversely affect any control based on the gauge output This alarm can Alter the current loop output to indicate the alarm condition e Trip the output relay if it is configured to do so 5 6 DSGH Installation and Operation Guide Diagnostics and repair The gauge enters the x ra
13. points voltage level to are not receiving 6 Check fuse on power supply electronics V DC voltage board Check power input required for terminals 1 2 functioning 24 V Analog output ON OFF 24 V not Check loop wiring and jumpers loop voltage present on 4 mA JP1 JP2 on power supply 20 mA output board Replace power supply 4 mA 20 mA board output and HART communications are bad Relay Relay condition ON relay is None Check against relay output indicator energized terminals 3 4 and 5 If no relay OFF relay is output replace power supply de energized board DSGH Installation and Operation Guide Diagnostics and repair CPU board LEDs Use the LED indicators on the CPU board to check the basic functioning of the gauge They are visible when you remove the explosion proof housing pipe cap gt nj T D Q D E T G FU bo J lt x G H Normal LED pattern Memory corrupt pattern Note If the LED band displays this pattern call VEGA Field Service to report this condition The gauge does not operate if the FLASH chip is corrupt Table 5 8 CPU board LED summary LED Description Normal condition Error condition Recommendation Mem Memory OFF 1 blink CPU Check software corruption EEPROM corrupt diagnostics Call VEGA EEPROMs and 2 blinks Sensor Field Service FLASH EEPROM corrupt 3 blinks Both EEPROMs corrupt 4 blinks RAM corrupt
14. so they are below the entries to the housings and use weep holes where permitted You must use a conduit seal off near the housing when located in a hazardous area Distance must comply with local code If you use only one conduit hub plug the other one to prevent dirt and moisture from entering 2 8 DSGH Installation and Operation Guide Installation Commissioning the gauge Depending on the source holder s type the process of commissioning the gauge can include e Taking appropriate radiation field tests e Checking the pre programmed setup parameters e Calibrating on process Verifying the working of the gauge You must remove the source holder lock or shield the first time the gauge takes measurements in the field Only persons with a specific license from the U S NRC Agreement State or other nuclear regulatory body may remove the source holder lock 4 Note Users outside the U S must comply with the appropriate nuclear regulatory body s regulations in matters pertaining to licensing and handling the equipment 4 Note See the Radiation Safety for U S General and Specific Licensees Canadian and International Users Manual and the Radiation Safety Manual Addendum of Reference Information CD that came with the source holder and the appropriate current regulations for details Field service commissioning call checklist In many U S installations an VEGA field service engineer commissions the gauge To re
15. the diagnostic condition is selected in Alarms Diagnostic Alarm Enable e Relay output if it is set as a diagnostic alarm relay in Alarms Relay Setup Relay Functions 5 2 DSGH Installation and Operation Guide Diagnostics and repair Ohmview 2000 Version 2 0 0 3 ioj xj File Communication Utilities Monitor Help Firmware Version 1 00 Tag DEMO Type Level Communication Statistics 100 Select Tabs Relay Setup Diagnostic Alarm Enable Analog Alarm X Ray Alarm Process Info Setup Calibration Relay Functions Relay Action Diagnostid eu Gauge Info C Process Diagnostics C XRay ES Alarms Linearizer Type noo Table Non linear Status Disconnect Gauge status diagnostics screens e Tocheck the system s present status select Diagnostics Diagnostics tab e For historical information select the Diagnostic History and STDZ History tabs Some conditions are self repairing example RAM and EEPROM corruption Therefore these may appear in history screens but not diagnostic screens Acknowledging diagnostic alarms Diagnostic alarms turn off when the problem is solved except these alarms e Source wipe due Shutter check due Standardize due Perform the procedure to acknowledge them Note If the relay is set as a diagnostic alarm you must acknowledge all diagnostic alarms to reset the relay DSGH Installation and Operation Guide 5 3 Diagnostics and repair Diagn
16. the gauge from control Enter the value of the new counts to force Click OK The transmitter functions in this mode until it times out 1 hour or you click Exit and OK Pon Auxiliary Inout Test This mode simulates the auxiliary input frequency at a user defined number of counts The effect of auxiliary input counts depends on the auxiliary input mode Examples e Temperature probe Flow meter 4 8 DSGH Installation and Operation Guide Advanced functions e Second transmitter While in this mode after entering a number of counts it may be useful to look at the Process Chain tab to view the variables affected by the auxiliary input counts value Procedure 4 7 To perform an auxiliary input test Select Diagnostics Test Auxiliary Input Test Click Enter Remove the gauge from control Enter the auxiliary counts Click OK The transmitter functions in this mode until it times out 1 hour or you click Exit and OK PF oN gt Relay Test ital 2d Twe Density Communication Saisies 100 Select Tabs STOZ History Dioghsoy New Hardware Process Chan Tow Gmuge seas Depose Curent Loop Tert Enter Gouge into SensceTest O _ Enter Em Auiliany legua Test O Enter Ex PaloyTen Engis Deenaegize Em Tatia Non ires Tempeimtse Ten _ Enter Es Lneerizer Type Discoseect This mode manually toggles the relay On or Off to test the contacts This is useful
17. 3 Checking the gauge repeatability 0 0 3 5 Calibrations 203 ta a de tees al daa le de acd as a a ean 3 6 1 Setting the low density and collecting Cal Low data 3 6 2 Setting the high density and collecting Cal High data 3 7 3 Calculating the calibration o o e e 3 8 Repeating the calibration s sca 0 o e e o 3 8 Periodic standardization o e e e 3 9 Standardization reminder o oo 3 9 Standardization on water ooo e 3 9 Standardization ON process o oo e 3 9 Standardization on absorber plates 2 2 a ee es 3 10 Chapter 4 Advanced functions 0000000000eeeee 4 1 Process chaise m waa tee fee ade td aa he tes ee hi ie 4 1 Gauge Information oaoa aa a e 4 3 Process Variables tab be SS hae oe ea eae ee Poe Ba ee 4 3 GAUGE INO taD ene aig Site A BPO go bots We Ab ve mee gaa ee Ge te el 4 4 Min Max History tab 2 o 4 4 New hardware or corrupt EEPROM 0000 ee eee eee 4 5 New Hardware tabi otci ccinn Gracie he beh Aa te ead GO De Sle ek 4 6 Responding to the New hardware found message o o 4 6 When new hardware is installed 0 o ee 4 6 When new hardware is not installed 0 o 4 6 TESUMOGES fate ME AA ee E AI pt ea E IA e 4 7 TOS A A A A e A Soe eet ee 4 7 Current Loop Test milliam
18. E mail fieldservice vega com manner that this manual describes per VEGA specifications Warning To ensure CE compliance use this equipment only in the Otherwise damage to the unit or personal injury may result DSGH Installation and Operation Guide NOTES DSGH Installation and Operation Guide Table of Contents Revision history s e a sa ra sea aeae ee i Prelate ARA ooo eee a a ee bette vii Explanation of symbols 2 aa a a vii Your comments aoaaa a a viii Chapter 1 Introduction 00 cece eee eee ees 1 1 Nuclear materials notice 2 o e 1 1 Unpacking the equipment 2 2 a 1 1 Storing the equipment a 1 2 Source holder ocio e eR GS a a AA e wo 1 2 Gauge sa eta ede eg a a ee re ee N 1 2 Certifications 2 4 2 5 ao aisha wa e dea eee Re a eae a ee Ge 1 3 Safety Information for EX Areas 2 e a 1 3 DSGH specifications o a e 1 4 Typical applications 2 o e 1 5 Principle of operation a 2 aa a 1 6 System overview oaa a a 1 6 Sourceholder so ee gec a i ae A A a a e a 1 7 Detector assembly a a ee 1 7 Communicating withthe gauge oaoa a ee 1 8 Using a field communicator a 1 8 Using Ohmview 2000 Software ona PC aaoo a eee ee 1 9 Customer Service a 1 11 U S and Canada 1 11 WONGWIS vico e a E eh eh is E a ir e i E 1 11 Have this information ready
19. EGA Field Service Standardize Due No Yes Standardize Due Perform a new standardization Source Wipe Due No Yes Source Wipe Due Perform a source wipe Acknowledge it on the Source Functions tab Shutter check due No Yes Shutter Check Due Perform a Shutter Check Acknowledge it on the Source Functions tab New hardware found No Yes New hardware found The CPU board detects a configuration mismatch The CPU board or sensor assembly may have been replaced or one of the EEPROM configurations is erroneous See page 4 7 Process out of range No Yes Process out of measurement range The current process value is not within the limits set by the Max density and Min density in the gauge span settings Call VEGA Field Service X Ray Alarm No Yes Note that there are high levels of x rays in your area that may be affecting process measurement Contact VEGA for further information DSGH Installation and Operation Guide 5 5 Diagnostics and repair Analog alarm If the current loop output analog output is stable at 2 mA or 22 mA the analog alarm is set The analog alarm is set when the counts from the detector fall below a set threshold indicating that the detector is not outputting enough counts to make a meaningful measurement This is known as 0 counts If the analog alarm is on verify M Source holder shutter is
20. Operating Instructions DSGH Radiation Based Detector with GEN2000 Electronics for Density Measurement Document ID 31392 Nuclear Revision history Version Description Date 1 0 Initial release Formerly 245638 EN 051201 1 1 Changed CD part number 32700 061201 Corrected copyright and registered symbols and date 1 2 Electronics revision 090306 1 3 Added certification information and 090814 IECex label 1 4 Changed logo company name and 110301 website 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 GEN20000 is a registered trademark of the VEGA Americas Inc VEGA View and Ohmview 2000 are trademarks of VEGA Americas Inc HARTO is a registered trademark of The HARTO 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 VEGA Americas Inc 4170 Rosslyn Drive Cincinnati Ohio 45209 1599 USA Tel 1 513 272 0131 Fax 1 513 272 0133 Website www vega com us Field service
21. SGH Installation and Operation Guide 1 9 Introduction e Ohmview 2000 Electronic User Manual When you insert the CD the program installs these programs onto your hard drive gt Note The HART Communication Server must always be on when using Ohmview 2000 s main program and Ohmview 2000 Logger 1 10 DSGH Installation and Operation Guide Introduction Customer Service U S and Canada On site field service is available in many locations Often a field service engineer is at your plant for your gauge s startup Field service engineers also provide assistance by phone during office hours For emergencies example line shut down because of VEGA equipment you can reach us 24 hours a day Table 1 2 Contact information Tel Monday Friday 8 00 A M 5 00 P M EST 1 513 272 0131 Tel emergencies follow the voice mail instructions 1 513 272 0131 Fax 1 513 272 0133 Field service e mail fieldservice vega com Worldwide Contact your local VEGA representative for parts service and repairs Have this information ready I VEGA Customer Order C O Number Located on the source holder s engraved label M Sensor s serial number Located on the gauge s housing inside the external housing DSGH Installation and Operation Guide 1 11 Introduction 1 12 DSGH Installation and Operation Guide Testing on the bench CHAPTER INSTALLATION To ensure a quick start up after
22. Sensor status diagnostics check 5 5 Sensor temp probe alarm acknowledge 5 4 Sensor Temperature 4 6 Sensor temperature in diagnostic history 5 9 Sensor Test mode 4 11 Sensor voltage status diagnostics check 5 5 Set high density 3 10 shutter check frequency 5 15 recording when complete 5 16 Shutter check due alarm acknowledge 5 5 diagnostics check 5 5 Source Decay Gain 4 4 source wipe 5 16 frequency 5 15 recording when complete 5 16 Source wipe due alarm acknowledge 5 5 source wipe due diagnostics check 5 5 spare parts 5 17 specifications DSGH 1 4 standardization due alarm 3 13 Standardization on absorber plates 3 14 Standardization on process 3 13 Standardization on water 3 13 Standardize 5 15 Standardize Gain 4 4 Standardize gain 3 12 storage 1 3 Switch for CE compliance 2 8 T TC temperature compensated counts 4 2 Temp Comp Gain 4 4 Temperature Test mode 4 13 Test modes 4 9 Test points 5 11 two point calibration 3 9 U Uncompensated level 4 3 Uniformity Gain 4 4 V Vessel s inner diameter system parameter 3 4 vessell inner diameter 3 7 X x ray alarm 5 1 5 7 Z zero counts 5 7 DSGH Installation and Operation Guide Index lll Index IV DSGH Installation and Operation Guide VEGA VEGA Americas Inc 4170 Rosslyn Drive Cincinnati Ohio 45209 USA Phone 1 513 272 0131 Fax 1 513 272 0133 E mail americas vega com www
23. Verify the sensor temperature on the Gauge Info Min Max History tab If the temperature reads 0 5 C constantly the probe is broken and the sensor assembly may need replacement Call VEGA Field Service Source wipe due No Yes Source wipe due Acknowledge the alarm by logging a shutter check in the Source Functions tab See page 5 14 CPU EEPROM CPU EEPROM corrupt To check for recurrence Pass Fail A critical memory corruption acknowledge the alarm Cycle occurred on the CPU board power to the unit EEPROM that may not be resolved If the alarm recurs there is a internally hardware problem Perform the procedure to repair the corrupted EEPROM on page 4 7 5 4 DSGH Installation and Operation Guide Diagnostics and repair Table 5 3 Diagnostic alarm conditions continued Diagnostic check and Normal Error conditions HART message Diagnostic description Action Alarm type 1 Not used Not used in standard software Consult VEGA special software Alarm type 2 Not used Not used in standard software Consult VEGA special software Sensor Status Pass Fail Sensor fail lt 1 count seen in the last 10 seconds Configurable by Field Service Indicates the sensor is malfunctioning Call VEGA Field Service Sensor Voltage Status Pass Fail Sensor high voltage fail The high voltage on the PMT is outside the usable range Call V
24. afety information for installation and operation in EX areas OHMAATVEGA MAR 2000 CINCINNATI OHIO U S A 45209 Patent No 6 198 103 GEN2000 IECEx CSA 09 0005X MODEL INPUT 115VA 25 W 50 60 Hz CONTACT RATINGS 240VAC 2A OR 24VDC 2A OR 1 4HP 120VAC Ex d IICT6 Ta 20 C TO 60 C OR Ex d IIB H2 T6 Ta 50 C TO 60 C IP66 WARNING USE A CABLE OR WIRING RATED FOR AT LEAST 90 C WARNING POTENTIAL ELECTROSTATIC CHARGING HAZARD SEE INSTRUCTIONS WARNING DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT lECex Label DSGH Installation and Operation Guide 1 3 Introduction DSGH specifications Table 1 1 DSGH specifications System Accuracy 1 of span Accuracy depends on specific application parameters typical 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 AC 100 230 10 VAC 90 250 VAC or with Requirements internal heater kit 115 230 VAC at 50 60 Hz at 15 VA maximum power consumption 25 VA lt with heater CE compliance requires 100 230 10 VAC DC 20 60 VDC lt 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 GEN2000 4 wire hookup with 1 02 0 643 mm
25. and collecting Cal Low data You must 1 Use the gauge to measure the low process density 2 Enter the actual density This sets the low end sometimes called 0 of the calibration curve Perform this procedure before or after setting the high density gt Note Perform the data collection for the low and high density within 10 days of each other for a good calibration The low and high values must be more than 10 of the process span apart for the most accurate calibration Increasing the process span usually increases the gauge accuracy Before starting the Cal Low data collection MI Check that the correct parameters vessel inner diameter engineering units measurement span and source type are correct M Power up gauge one hour before start of calibration K Fill vessel or pipe with low process M Prepare to draw a sample while the gauge is collecting data 3 6 DSGH Installation and Operation Guide Calibration Firmware Version 1 00 Select Tabs LinuerzorDetaFt OeteCollect CuneetLoopCat Sesdardiro PowtCalbra on Point Calioreaon UneanzerTabie CalLowCounte 0 CollLowPY 1000 Gouge irto Cel Low Dele 0 0 2000 Cel High Cours 0 ColHighPY 0600 Lnearizer Type CARREY 0800 Cal High Deto 0 0 2000 Col High Colect Table Non hew Stews Colcwete Resuts Disconnect Procedure 3 4 To set the cal low density m 2 O NA Select Calibration 2 Point Calibration Cal Low Colle
26. anual and the Radiation Safety Manual Addendum of Reference Information CD that came with the source holder and the appropriate current regulations for details Vertical pipe with upward flow Mount the measuring assembly on a vertical pipe with upward flow of the process material This position provides the best possible self cleaning action with a minimum possibility of gas or heavy solids collecting in the measuring section You can mount the gauge on a horizontal pipe but a vertical flow is preferable Keep the velocity above five feet per second to avoid build up on the pipe walls and to keep the heavier solids in suspension This is particularly true in sludge applications Pump considerations Mounting the density gauge near a pump can be good or bad depending on the application Check with VEGA application engineers for a recommendation on your application No line hammering The design of the density gauge requires operation in low vibration conditions Install it in a location with no line hammering or excessive vibration Quickly changing flow conditions 2 2 DSGH Installation and Operation Guide Installation may cause line hammering If necessary you can physically mount the density gauge apart from the vessel or pipe but notify VEGA at the time of the order to ensure proper source size and shielding Stable temperature Mount the gauge on a portion of the line where the temperature of the process material is relat
27. ate it to relate the detection of radiation from the source to the density of the process material e Calibrate the current loop to a reference ammeter or the DCS e Periodically you must standardize the system on process to adjust for changes over time Calibration establishes a reference point or points that relate the detector output to actual or known values of the process You must make a calibration before the gauge can make accurate measurements Perform the calibration after the installation and commission of the gauge at the field site You do not need to repeat the calibration procedures if certain critical process and equipment conditions remain unchanged The gauge requires only a periodic standardization to compensate for changing conditions Current loop analog output calibration Calibrating the current loop adjusts the 4 mA 20 mA output to a reference the PLC DCS or a certified ammeter It forces the 4 mA and 20 mA outputs to the external reference The VEGA factory pre adjusts the current loop with a certified ammeter so it is very close to the outputs required DSGH Installation and Operation Guide 3 1 Calibration To correlate the 4 mA 20 mA to the process value set the span of the current loop output gt Note The current loop and process spans are independent and set separately The current loop span sets the density indications for the 4 mA and the 20 mA outputs The process span sets the
28. best orientation in this case is for the source holders to be on the inside with radiation beams pointing away from each other DSGH Installation and Operation Guide 2 3 Installation Mounting the measuring assembly You can mount the density gauge on the pipe by positioning the detector housing and source holder brackets with the bolts that VEGA provides If the pipe has insulation the density gauge and source holder should have external support to prevent crushing of the insulation Note In some cases the handle on the source holder operates a rotating VAN shutter When installing or removing the assembly from the pipe you must turn the handle to the closed OFF position and lock the handle with the combination lock provided Mounting the DSGH gauge 2 4 DSGH Installation and Operation Guide Installation Wiring the equipment gt Note If you received an interconnect drawing from VEGA or the engineering contractor and the instructions differ from the instructions in this manual use the drawing It may contain special instructions specific to your order Use the drawing notes and the steps that follow to make the input and output connections Make the connections at the removable terminal strips mounted on the power board To access the power board remove the explosion proof housing cap VEGA provides an internal and external ground screw to connect the power earth ground wire Remove the top cover
29. ct Click Start Click Accept Enter the actual value in engineering units Click OK 2 Setting the high density and collecting Cal High data You must Use the gauge to measure the high process condition Enter the actual density This sets the gain of the calibration curve Perform this procedure before or after setting the low density Before starting the Cal High data collection m M Check that the correct parameters vessel inner diameter engineering units measurement span and source type are correct Power up gauge one hour before start of calibration Fill vessel or pipe with high process or close the source holder shutter to simulate high process Prepare to draw a sample while the gauge is collecting data DSGH Installation and Operation Guide 3 7 Calibration Procedure 3 5 To set the cal high density Select Calibration 2 Point Calibration Cal High Collect Select Start Click Accept Enter the actual density process value from the laboratory in engineering units Click OK MA ANS 3 Calculating the calibration Procedure 3 6 To calculate the calibration Select Calibration 2 Point Calibration Click Calculate Results Click OK Click OK SUNS Repeating the calibration Typically the system requires only periodic standardization to compensate for drifts over time However these events require you to repeat the calibration e Measurement of a new proces
30. d screw Electronics housing bracket CO y a 7 aa Mounting 4 GA Of or DSGH Installation and Operation Guide 5 9 Diagnostics and repair COUNTS Power Supply and CPU Boards Test points Located on the power supply and CPU board Table 5 4 Power supply board test point labels Label Description H1 HART connection H2 HART connection TP1 Isolated ground TP2 Loop current test point 200 mV mA loop current Referenced to isolated ground 5 10 DSGH Installation and Operation Guide Diagnostics and repair Table 5 5 CPU test point labels Label Description Count Raw input signal coming from the preamplifier GND Logic ground U5 pin 8 5 V power supply test points Referenced to logic ground Jumpers Jumpers JP1 and JP2 on the power supply board set the current loop source or sink mode gt Table 5 6 Jumper settings Note Do not change the jumpers from the current setting without calling VEGA Field Service Mode Gauge current loop Jumper setting Source mode Self powered JP1 1 2 JP2 2 3 Sink mode DCS powered JP1 2 3 JP2 1 2 The gauge does not use jumpers J1 J4 on the CPU board LED indicators Table 5 7 Power supply board LEDs Normal LED Description Condition Error condition Recommendation 6 V 6 VDC ON OFF electronics Verify 6 V on test
31. duce service time and costs use this checklist to ensure the gauge is ready for commission before the engineer arrives M M M M M Mount the source holder and detector per the VEGA certified drawings Allow access for future maintenance Make all wiring connections per the certified drawings and page 2 5 Tie in the wiring from the field transmitter analog output to the distributed control system DCS programmable logic controller PLC chart recorder Ensure that the AC power to the transmitter is a regulated transient free power source UPS type power is the best If using DC power verify that the ripple is lt 100 mV 1 1 000 Hz at 15 W gt Note The equipment warranty is void if there is damage to the gauge due to m incorrect wiring not checked by the VEGA field service engineer Have process ready for calibration DSGH Installation and Operation Guide 2 9 Installation MI When possible have process available near both the low and high end of the measurement span A density change of at minimum of 0 1 SpG is a common requirement M When possible have the material used for periodic standardization of the gauge available usually water M Do not remove the lock or shield on the source holder Notify VEGA Field Service if there is damage to the source holder 2 10 DSGH Installation and Operation Guide CHAPTER CALIBRATION Before using the gauge to make measurements you must e Calibr
32. e 1 13 Ohmart Field Service 5 19 Ohmart View software 1 11 differences with communicator 1 10 VEGA Parts and repairs 5 17 Ohmart VEGA Field Service 1 13 Ohmview 2000 software kit 1 11 One point calibration 3 7 one point calibration 3 7 P Periodic maintenance 5 15 Periodic process standardization 3 12 PLC 2 11 Power Supply Board 5 11 Power supply board test 5 11 Process alarm 5 1 process alarm 5 7 override switch 5 7 Process alarm override switch 2 9 Process chain 4 2 Process out of range alarm acknowledge 5 6 diagnostics check 5 6 R RAM corrupt alarm acknowledge 5 4 RAM status diagnostics check 5 4 Raw counts 4 2 Real time clock fail alarm acknowledge 5 4 in diagnostic history 5 9 Real time clock test diagnostics check 5 4 Relay 2 8 Relay Test mode 4 12 Repair 5 17 repairs material return authorization MRA number 5 20 returning equipment to VEGA 5 20 repeatability 3 6 RS 485 2 8 S Scintillator sensor voltage 4 5 SD source decay counts 4 2 Select gauge location 4 15 Select gauge type 4 14 4 15 Sensor Coefficients 4 5 Sensor Coefficients TO to T3 4 5 Sensor Counts 4 6 Sensor EEPROM corrupt 4 8 alarm acknowledge 5 4 Sensor EEPROM status diagnostics check 5 4 Sensor fail alarm acknowledge 5 5 in diagnostic history 5 9 Sensor high voltage fail alarm acknowledge 5 5 Sensor Serial Number 4 5 Index ll DSGH Installation and Operation Guide
33. e Communication Liites Montor Heip Firmware Version 1 00 Tog DEMO Tye Density Commuricetion Statieice 100 Select Tabs Fiterng SowcoFunciona Syutaminto Aux input Gauge Sep ColPoramotors pyues Spans Process fo Setup Dato Collect letra Colbrotion Wem ColSpan 000 Gouge ito Diegnostcs i Lab Semple Alams Detest Value Standardize interval 0 Lneoriser Typo OT e D Unte mn Ca Pipe ip P0 C mm en Cm Tatie Nor lear Stone ooo Stems Disconnect The equation linearizer is appropriate for a one or two point calibration Fle Communication tiles Mentor Hep Firmware Version 1 00 Teg DEMO Type Density Communication Sta ebce 100 Select Tabe Fiterng SowceFuncions Systeminto Auxcinput GougeSeup ColParemeters Pvumts Span Process hifo Gouge Type C Laval Set Coltora on Density Gouge kto Diegnostcs Tronamitor Loce on Alarms Local Remote Lnesrizer Type Equation Lingesizar Type Sis Equation Tablo Non incor Table Lunes Disconnect 3 4 DSGH Installation and Operation Guide Calibration Procedure 3 2 To choose an equation linearizer type 1 Select Setup Gauge Setup Linearizer Type 2 Click Equation Checking the gauge repeatability Check the gauge s measurement repeatability before performing the calibration To check the repeatability of the sensor perform a data collection 3 4 times on th
34. e equipment to VEGA s Repair Department in U S or your local representative outside the U S See page 1 11 for contact information DSGH Installation and Operation Guide 5 17 Diagnostics and repair Notes 5 18 DSGH Installation and Operation Guide index Symbols process span 4 3 2 wires for power 2 for 4 mA 20 mA Relay 2 8 A Absoprtion co efficient 3 4 Acknowledging diagnostic alarms 5 3 Adj counts 4 2 Advanced Functions 4 1 Advanced Fxns 4 1 alarm analog alarm 5 7 Alarm type outputs 5 2 Analog alarm 5 1 analog alarm acknowledging 5 7 analog output See current loop output 3 2 output fixed at 2mA or 22mA 5 7 applications 1 6 Aux in min max 4 6 Auxiliary Input Test mode 4 12 Auxiliary x ray alarm 5 8 C calibration current loop analog output 3 2 Commissioning the gauge 2 10 Communication 2 9 component layout 5 1 1 Conduit 2 9 Counts High 4 4 Counts Low 4 4 CPU Board 5 11 CPU board jumpers 5 12 LED indicators 5 12 replacing 5 15 5 17 CPU EEPROM corrupt 4 8 alarm acknowledge 5 3 5 5 in diagnostic history 5 9 CPU EEPROM status diagnostics check 5 5 CPU serial number 4 5 CPU test point 5 11 current loop calibrating on the bench 2 1 2 2 calibration 3 2 output fixed at 2mA or 22mA 5 7 output test mode 4 9 power source or sink mode 5 12 Customer Order C O Number 1 13 required for repairs 5 20 D Data collection interval using
35. e same sample If the sensor counts vary widely you should increase the Data collection interval parameter Perform a data collection to enable simple measurement of the process without altering the calibration or standardization values It lets the system measure the process and report the number of sensor counts Uhmview 2000 Version 2 09 Liias Montar Hep Firmware Version 1 00 Twe Density 2 Poist Calbeton 1 Point Calibration Linaanrer Data Fr Osto Colloc CureetLoop Cat Stsadardire Calibration Gouge ino Exocute Diegnostcs Alarms Lneorizer Type Tabi Mon inoa Status Disconnect Procedure 3 3 To perform a data collection Select Calibrations Data Collect Click Execute Set the process to a known point Click Start After the data collection the number of counts output by the gauge appears PON gt a Click Accept 6 Repeat as often as necessary if checking repeatability DSGH Installation and Operation Guide 3 5 Calibration Calibration The recommended calibration for a density gauges is a two point calibration The two point calibration measures the low and high process conditions gt Note The two point calibration method is useful in conjunction with any linearizer method The two point calibration method involves three main steps 1 Setting the low density 2 Setting the high density 3 Calculating the calibration 1 Setting the low density
36. e uses VEGA s GEN2000 VEGA s newest compact electronics that support 4 mA 20 mA HARTO protocol frequency or fieldbus output The density measurement system includes e Source holder e Detector assembly Communication device HART modem with PC and VEGA software or Emerson Field Communicator 375 Power Hand held terminal Control system 6A relay alarm 4 to 20mA current loop Computer 1 6 DSGH Installation and Operation Guide Introduction Source holder A cast or welded steel device that houses a radiation emitting source capsule e Directs the radiation in a narrow collimated beam through the process vessel e Shields the radiation elsewhere The model chosen for each system depends on the source capsule inside and the radiation specifications e Its shutter completely shields the radiation source off or lets it pass through the process source on if applicable Detector assembly e Mounts opposite the source holder e Inside the detector is a scintillator material which produces light in proportion to the intensity of its exposure to radiation A photomultiplier tube detects the scintillator s light and converts it into voltage pulses The microprocessor receives these voltage pulses after amplification and conditioning by the photomultiplier tube The microprocessor and associated electronics convert the pulses into an output that can be calibrated 7 Power Supply
37. es in the table are percent count range and percent process span Unfiltered PV The density in inches without the time constant or rectangular window filter Uncompensated PV The density of process before any process compensation Final PV The process value in engineering units after applying the filter This value relates to the current loop output Aux Counts The frequency input counts from optional auxiliary input Filtered Aux Counts The filtered auxiliary counts Enter the filter dampening value for the auxiliary input s filter time constant 4 2 DSGH Installation and Operation Guide Advanced functions Gauge Information Process Variables tab BS SANS sip Fla Communication Utites Mentor heip Firmware Version 1 00 Tog DEMO Twe Density Communicahon Stabehes 100 Select Tabe Process Variables Gauge Into MinyMex History Process info Low Process Col Yolues High Process Cal Values Maffy 0000 Max PY 0 000 Setup z Courts Low 000 00 Courts High 200 00 Coloration Gouge kto Semor Temp Comp Gain 1 0000 Diagnostics Ureborreety Gam 1 0000 Merne Sowce Decay Gain 1 0000 SuteGnin 1 6600 Lneorizer Ty fre MVSeteg 1000 Table Nin new Stars Disconnect Table 4 2 Process Variables tab display values Value Description Min PV The value in process units as entered in the setup tab Use this to Max PV calculate the measurement span
38. ew2000 software under the Diagnostics and Gauge Info tabs These functions are primarily for use by VEGA personnel for advanced troubleshooting and repair gt Note VEGA strongly recommends that you ask our advice before using any advanced function Process chain The process chain is a description of the gauge software s calculation of a density measurement from a radiation reading In the Process Chain tab you can view intermediate values of the calculation to verify proper functionality of the software Tle Communication ties Mentor Hap Firmware Version 1 00 Teg DEMO Twe Density Commurication Staieice 100 Suleci Tade STDZ History Disg History New Hardware Process Chen Tent Gouge Semis Diagnostics Process blo F Sensor Tomporomre oo Setup Colman F Sensor Counts 0 F Tomp Come Cours 1 F Row Counts 1000 Diegnostcs F Adjusted Courts 0 Enable All Gouge into F Source Decry Courts 0 Alam wS Disable All E Sanderdice Counts 0 Pas PUR a a F Percer Court Range F Parcent Process Spen Lneorizor Type o 0 F Untitored PY 0 1 0 Table Non ine F Uncompensaind PY F Final PY I Au Counts 0 I Fitaend Aux Counts 0 Disconnect DSGH Installation and Operation Guide 4 1 Advanced functions Table 4 1 Process Chain tab display values Value Description Sensor Temperature The internal probe s measurement of the sensor temperature Sensor Counts True count
39. ey 22 ey A eae A A Rae AA eo 5 10 JUMPS 8 Je Gang piesa dl e aid a de Ooms doe oh te a A ee 5 11 LED indicators es 3h ee a ae a es ee we SE a ee ee Pe 24 5 11 CPU board LEDSine oo ih ape ena oh Slee tl BS aE doe 4 5 12 Maintenance and repair a aoaaa a a a a 5 13 Periodic maintenance schedule a 5 13 Source Functions lt sos ss aa ra a hae waa he eae ee a 5 14 Recording the source wipe and shutter Check a 5 14 Field repair procedures a aoaaa a a 5 15 Spare Darse bee e Ba a A eae fa te eet ca AA te 5 15 Replacing the CPU or power supply board 00 00 eee eee 5 15 Requesting field Service 0 e e 5 16 Returning equipment for repair to VEGA 2 2 2 ee 5 17 vi PREFACE Explanation of symbols In the manual AA Radiation notice Introduces information concerning radioactive materials or radiation safety A 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
40. for verifying whether alarm annunciators are functioning Procedure 4 8 To perform a relay test 1 Select Diagnostics Test Relay Test 2 Select Energize relay or De energize relay 3 The transmitter functions in this mode until it times out 1 hour or you click Exit DSGH Installation and Operation Guide 4 9 Advanced functions Temperature Test This mode manually forces the sensor s temperature probe output to a specified value This is useful for verifying the scintillator sensor temperature compensation Procedure 4 9 To perform a temperature test 1 Select Diagnostics Test Temperature Test 2 Click Enter 3 Remove the gauge from control Enter the value of the new temperature to force 4 Click OK 5 The transmitter functions in this mode until it times out 1 hour or you click Exit and OK Selecting the transmitter s type and location Gauge Setup tab Ubmview 2000 Version 2 0 0 9 Fle Communication ties Mentor Hap Firmware Version 1 00 Tag DEMO Tye Density Communication Ste eice 100 Select Tebe Fiteng SowcoFunciona Systominto Ameinput Gouge Seup Cal Parameters PVs Spans Process fo Gouge Typo C Level Setup Collbretion E Density Gouge Into Diegnostcs Tronsmitor Loco co Alim Locel Remoto Lncorizor Type Table Non irea Linoeizor Tupe Saws Equation Teble Non near f Table Unear Disconnect Type The GEN2000 level and density gauges l
41. ing the CPU or power supply board You may have to replace a circuit board if there is damage to one of its components Before replacing a circuit board check the troubleshooting flowcharts or call VEGA Field Service to be sure a replacement is necessary The sensor EEPROM contains a backup of the CPU board EEPROM After replacing the CPU board you must perform a memory backup to update the CPU board s EEPROM with the information in the sensor board EEPROM Procedure 5 3 To replace the CPU or power supply board Shut off the power to the gauge Remove the housing cover Remove the plastic electronics cover Remove the terminal wiring connector Remove the three 3 screws holding the electronics package in place Carefully pull the electronics package out of the housing N O Ol A O NS Remove the appropriate board from the clamshell assembly by removing the three 3 mounting nuts gt Note If you are changing the CPU board you must move the old firmware chip to the new board if the new board firmware is different DSGH Installation and Operation Guide 5 15 Diagnostics and repair Carefully reconnect any ribbon cables Install the electronics package in the housing 10 Replace the three 3 mounting nuts 11 Reconnect the terminal wiring connector 12 Install the plastic electronics cover 13 Install the housing cover 14 Turn on the power to the unit 15 Connect a HART communicator to the unit and verify
42. installation you can test the detector assembly with the HART compatible communication device a field communicator or a PC with a HART modem and VEGA software Bench testing lets you check Power Communication e Initial setup software parameters e Some diagnostics GEN2000 terminals 13 and 14 z 250 800 Q load resistor optional Mini clips Hi He Transmitter test points PC running VEGA software Bench test setup DSGH Installation and Operation Guide Installation gt Note You may need to reset the time and date if the gauge has not had power for gt 28 days The Real Time Clock Fail message may appear You must enter the correct time and date The clock is the basis for source decay calculations You can calibrate the current loop output on the bench before mounting the detector on the process See page 3 3 Location considerations When you ordered the gauge VEGA sized the source for optimal performance Notify VEGA before installing the gauge if its location differs Satisfactory operation depends on proper location Note Locate the source holder where process material cannot coat it This VAN ensures the continuing proper operation of the source ON OFF mechanism if applicable Many regulatory bodies example the U S NRC require periodic testing of the ON OFF mechanism See the Radiation Safety for U S General and Specific Licensees Canadian and International Users M
43. ively stable Process temperature can effect the gauge indication The amount of the effect depends upon the following e Sensitivity of the gauge e Temperature coefficient of the process material Temperature compensation is available but requires an VEGA temperature probe in the process as an input to the gauge Protect insulation If insulation is between the measuring assembly and the process protect the insulation from liquids The absorption of a liquid such as water can affect the gauge indication because it blocks some radiation No air entrainment Mount the gauge on a portion of the line where there is no possibility of air or gas entrainment and where the pipe is always full of process material Air or gas entrainment in the process or a partially full pipe can result in an inaccurate gauge indication Standardization considerations The gauge requires periodic standardization Use process absorber plates or other easily repeatable reference fluid such as water for this standardization You must be able to empty or fill the pipe with water if you plan to standardize with absorber plates or water Often you can purge the measuring section of a pipe by rerouting the process material through a bypass section Avoid source cross talk When multiple adjacent pipes or vessels have nuclear gauges you must consider the orientation of the source beams so each gauge senses radiation only from its appropriate source The
44. mind you when a source wipe and shutter check are due If you do you must record the source wipes and shutter checks in the software to acknowledge the alarm and reset the timer Perform this procedure after a source wipe or a shutter check Note See the Radiation Safety for U S General and Specific Licensees AN Canadian and International Users Manual and the Radiation Safety Manual Addendum of Reference Information CD that came with the source holder and the appropriate current regulations for details Procedure 5 1 To record a source wipe or shutter check 1 Select Setup Source Functions 2 Click Record Wipe or Record Shutter Check Procedure 5 2 To change the due date of source wipe or shutter check 1 Select Setup Source functions 2 Change the number of days in the Wipe Interval or Shutter Check Interval field 3 Click OK DSGH Installation and Operation Guide Diagnostics and repair Field repair procedures Very few parts are field repairable but you can replace entire assemblies or boards These parts are replaceable e CPU circuit board e Power supply circuit board gt Note Use great care to prevent damage to the electrical components of the gauge VEGA recommends appropriate electrostatic discharge procedures Spare parts Contact VEGA Field Service at 1 513 272 0131 for parts service and repairs Outside the U S contact your local VEGA representative for parts service and repairs Replac
45. mmeter reads 4 00 mA or NO for any other reading Repeat until the meter reads 4 00 mA The meter approaches the 4 00 mA successively 8 Read the ammeter enter the actual milliamp reading Click OK 10 Click OK You can check the current loop output calibration at any time by using the test mode to output a user specified milliamp setting See page 4 7 Choosing the linearizer type The gauge s response curve is non linear due to the measurement method of radiation transmission The linearizer determines the shape of the curve between the endpoints DSGH Installation and Operation Guide 3 3 Calibration The gauge s linearizer type is part of the signal processing necessary to produce a linear final output with respect to the change in density of process material The majority of density applications use the equation linearizer method to perform the one point calibration method For density applications the equation is the default and we recommend it in most circumstances If the results from the equation linearizer method are not satisfactory contact VEGA Field service to further explain the other options The linearizer equation calculates a density reading for a given count reading at the detector To make the correction calculation it relies on the following information e Vessel s inner diameter system parameter Span settings parameter Data used in the calibration e Absorption co efficient 101 Fi
46. n Hardware Version 1 Gauge Info CPU SerialNumber G Diagnostics Sensor SerialNumber GEN2000 CPU board s serial number Alarms Sensor Coefficients Linearizer Type To 1 000000 i gt Table Non linear a po unit s serial HA T2 1 000000E 0 number eee 3 1 000000 0 on Sensor Coefficients TO T3 Disconnect Table 4 3 Gauge Info tab additional display values Value Description Sensor Coefficients The algorithm that compensates for variations in measurement output with changes in temperature uses temperature coefficients The factory determines the coefficients through rigorous testing You cannot change them through normal operation Procedure 4 1 To check the equipment version serial numbers and temperature coefficients 1 Select Gauge Info Gauge Info 2 The Gauge Info tab appears Min Max History tab The Min Max History displays the minimum and maximum values for parameters since the last min max reset 4 4 DSGH Installation and Operation Guide Advanced functions l Table 4 4 Min Max History tab display values Value Description Sensor counts The raw uncompensated counts from the detector Aux in min max The auxiliary input counts if used Sensor The internal temperature of the scintillator sensor in the gauge Temperature Last reset The date of the last min max reset You can reset these values so they record from the time of the reset
47. n Safety for U S General and Specific Licensees AA Canadian and International Users Manual that came with the source holder and the appropriate current regulations for details Unpacking the equipment with your U S Agreement State U S NRC or other nuclear regulatory body Caution You must be familiar with radiation safety practices in accordance before unpacking the equipment MI Unpack the unit in a clean dry area DSGH Installation and Operation Guide 1 1 Introduction 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 XK ARAK 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 M Ifyou must return the equipment see the section Returning equipment for repair to VEGA in the Diagnostics and repair chapter M 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 Note Most source h
48. no 18 or 20 AWG 4 conductor Electronics Housing DC shielded Certification to Designed to meet National Electric Code U S and CSA and UL Canada standards Class Groups A B C and D Div 1 and 2 e Class Il Groups E F and G Div 1 and 2 ATEX Certification 112 G D EEx d IC T6 IP66 20 60 C 4 F 140 F 112 G EEx d IIB H2 T6 50 C 60 C 58 F 140 F Enclosure rating NEMA 4X IP 66 Ambient 20 50 C 4 F 122 F option for lower temperature 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 DSGH Installation and Operation Guide Introduction Table 1 1 DSGH specifications continued Weight Housing detector 5 44 kg 12 Ib Communication Current Loop Output Rating 4 mA 20 mA isolated into 250 800 Q Power Jumper selectable source active or sink passive mode Relay Output Software Diagnostic alarm or process high low alarm user settleable function Rating 6 A at 240 VAC or 6 A 24 VDC SPDT Form C or 1 4 HP at 120 VAC HART 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
49. o the New hardware found message When new hardware is installed When you install a new CPU board or sensor assembly you must verify installation in Ohmview 2000 to enable new backups of the EEPROMs Procedure 4 3 To verify the New Hardware Found message 1 Select Diagnostics New hardware New CPU or New Sensor 2 Click OK When new hardware is not installed If the error message New hardware found appears an EEPROM is probably corrupt The messages CPU EEPROM Corrupt or Sensor EEPROM Corrupt may also appear in the history 4 6 DSGH Installation and Operation Guide Advanced functions Usually you can repair the corruption using the EEPROM backup Caution If you suspect an EEPROM is corrupt please call VEGA Field Service for advice before performing the following procedure Procedure 4 4 To repair the corruption using the EEPROM backup 1 Select Diagnostics New Hardware No New Hardware 2 Click OK Test modes In the test modes the transmitter stops measuring the process material and allows manual adjustment of critical variables for troubleshooting The test modes function independently but you can use them in combination to test multiple variable effects All test modes time out after one hour if you do not exit Caution While in a test mode the gauge is not measuring process so its AN current output does not reflect the process value If your DCS is controlling from the
50. older models accept a lock Call VEGA Field Service see AN page 1 11 for contact information for more instructions if 1 The source holder does accept a lock and there is no lock on it 1 The lock is not secured 1 You cannot secure the lock 1 The 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 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 lt 50 relative humidity Store equipment in dry conditions until installation 1 2 DSGH Installation and Operation Guide Introduction Certifications This gauge is designed for certification compliance from the following agencies e ATEX Standard e CCOE India CEPEL INMETRO Brazil e CSA e FM Standard e GOST B Standard e COST R Standard e IECex e JIS Japan e KTL Korea e NEPSI China Safety Information for EX Areas Please note the EX specific s
51. ook similar and use the same software If your density transmitter indicates Level it was set incorrectly for a density application Procedure 4 10 To select the transmitter s type 1 Select Setup Gauge Setup Gauge Type 2 Select Density 4 10 DSGH Installation and Operation Guide Advanced functions Location The local transmitter refers to a gauge that has its sensor electronics and processing electronics all contained in the same housing Set a gauge to Remote if the sensor electronics and processing electronics are in separate housings and the process signal connects to the auxiliary input of the processing electronics Procedure 4 11 To select the transmitter s location 1 Select Setup Gauge Setup Transmitter Location 2 Select Local or Remote DSGH Installation and Operation Guide 4 11 Advanced functions Notes 4 12 DSGH Installation and Operation Guide CHAPTER DIAGNOSTICS AND REPAIR Software diagnostics The density transmitter system can alert users to potential problems by e Posting messages on the Ohmview 2000 message screen Energizing the output relay e Distinctly changing the current loop output e Tracking the current status and history in the Gauge status screens Table 5 1 Alarm types Name Description Diagnostic Provides information about the density gauge system and alerts users when alarm periodic procedures are due Analog ala
52. ostic alarm messages Active alarm messages may appear on the Ohmview 2000 menu if the alarm condition is selected You can select individual alarm conditions in the Alarms Diagnostic Alarm Enable tab When a HART device initially connects to the gauge any conditions in alarm appear on the screen Table 5 3 Diagnostic alarm conditions Diagnostic check and Normal Error conditions HART message Diagnostic description Action RAM Status Pass Fail RAM corrupt RAM memory corruption occurred and was resolved internally Repeated triggering of this alarm suggests a hardware problem Consult VEGA Field Service Sensor EEPROM Pass Fail Sensor EEPROM corrupt A critical memory corruption occurred on the sensor pre amp board EEPROM that may not be resolved internally To check for recurrence acknowledge the alarm Cycle power to the unit If the alarm recurs there is a hardware problem Perform the procedure to repair the corrupted EEPROM on page 4 7 Real Time Clock Status Pass Fail Real time clock fail The clock failed This can cause a miscalculation of timed events If the gauge had no power for gt 28 days reset the time and date Reset the time and date If they do not reset call VEGA Field Service Sensor Temp Probe Pass Fail Sensor temp probe fail The sensor temperature probe may not be functioning which results in erroneous measurements
53. p output o o e 4 7 SENSORES areae SAIRE a A A ak oe ee ha 4 8 Auxiliary Input Tests s oo a a A e ee ME 4 8 Relay Test duo dls a rar A fom A A E qed eee e 4 9 Temperature Tests aod e muh grama ra A a e A Boe 4 10 Selecting the transmitter s type and location 0 o 4 10 Gauge Setup tabi a os it Bok eee aa ee A e ed woke ee i hk 4 10 TYPO 2s cael cet On a Re Be Bed Bek Aide BR Si we ee A 4 10 Location aaasta tee he si Bene a Ye Gus fare a A ete ee oa a A 4 11 Chapter 5 Diagnostics and repair 0oooooooooo 5 1 Software diagnostics 2 2 oeoa e a 5 1 Gauge Statlis tab a cus tet a a ee a e a a et DETA dsd 5 2 Diagnostic alarms and HART messages oaoa aa a 5 2 Relay Setup tos cd a ee ets ot eG uy ee a ae a a aed at Ete ed 5 3 Gauge status diagnostics screens ooa oo e e e 5 3 Acknowledging diagnostic alarms 2 1 ee e e 5 3 Diagnostic alarm messages e 5 4 Analog alii ia OA e e ane ie aie alk Gees OA a 5 6 Process ala Za ea A A eee a 5 6 Xray alarm s es bad A rl a bal ae a ah hae a pale 5 6 Auxiliary x ray alartt o cee4 40 Spd ee Roh Be ek He oes See eee he BAe ee 5 7 History information 2 weve a aed hee tag A eel a fe amp Ba a 5 8 Diag Historytab 00 cat e a Re a et wd Sale 5 8 Troubleshooting a 20000 e dale dt agi qoeia Gia ale ed wma le Boke a 5 9 Circuit board identifications ooo ee 5 9 TESt POINtS
54. parate earth ground The DC power source voltage input is 20 60 VDC lt 100 mV 1 1 000 Hz ripple at 15 VA maximum power consumption DC power cable can be part of a single cable 4 wire hookup or can be separate from output signal cable See Output current loop section Use wire for power per local code Use supply wire suitable for 40 C above surrounding ambient temperature All field wiring must have insulation suitable for 250 volts or higher gt Note HART signal may not operate with some isolating barriers or other non resistive loads Switch for CE compliance For CE compliance install a power line switch lt 1 m from the operator s control station Output current loop Output signal is 4 mA 20 mA into 250 800 Pin 13 is and Pin 14 is HART communication protocol BEL202 FSK standard is available on these connections The output is isolated to standard ISA 50 1 Type 4 Class U When using signal current loop or 4 mA 20 mA output cables that VEGA did not supply they must meet these specifications Maximum cable length is 1 000 m 3 280 All wires should be per local code When using DC power the signal and power can run on a single cable 4 wire hookup 2 wires for power 2 for 4 mA 20 mA Relay Use relay contacts rated at 6 A at 240 VAC 6 A at 24 VDC or 1 4 HP at 120 VAC Frequency input signal is 0 100 kHz lt true digital RS 485 The maximum cable length is 609 me
55. rm Sets the current loop mA output to 2 mA or 22 mA when the detector outputs 0 counts Process The process alarm lets the relay output trip when the process density is alarm above high limit or below low limit a setpoint X ray alarm Distinctly changes the current loop mA output in response to a marked increase in the radiation field This prevents control problems when external radiographic sources are in the area for vessel inspections DSGH Installation and Operation Guide 5 1 Diagnostics and repair Table 5 2 Alarm type outputs Diagnostic Analog Process X ray ion to trigger Option to trigge X Xx X relay Display HART play Optional message Current loop X X output affected Gauge status and X gauge history Gauge Status tab AT File Communication Utilities Monitor Help Firmware Version 1 00 Tag DEMO Type Level Communication Statistics 100 Select Tabs STDZ History Diag History New Hardware Process Chain Test Gauge Status Diagnostics Process Info sup Relay Status De energized Calibration CurrentLoop Output 450 mA Gauge Info Diagnostics Alarms Linearizer Type Table Non linear Status Disconnect Diagnostic alarms and HART messages Diagnostic conditions that are currently in alarm alert users by e Diagnostics screens in the Messages box on the main Ohmview 2000 screen HART messages that appear when a HART device connects if
56. s application contact VEGA for recommendation e Process requires a new measurement span Entering a new measurement span setting into the software e Installing a new radiation source holder e Moving the gauge to another location e Changes to pipe size schedule or any other change in process piping Excessive buildup or erosion of pipe that standardization cannot compensate for check standardize gain e Standardize gain gt 1 2 after a standardization indicating it made a 20 adjustment from the previous calibration 3 8 DSGH Installation and Operation Guide Calibration Periodic standardization Standardization adjusts the system by resetting one point of the calibration curve to an independently measured or known sample The frequency of standardization depends on several factors including the reading s accuracy During the standardization procedure the system displays A default value for the standardization condition A prompt to enter the actual process value of the standardization condition Standardization reminder If you enable the standardization due alarm the gauge produces an alarm when standardization is due The standardize interval is programmed in Setup Cal Parameters You can perform a standardization using any of the following e Process e Water or other repeatable fluid Absorber plates Standardization on water Standardization on water is the best choice if water is readil
57. s output from the sensor but before application of Temperature compensation Standardize Sensor uniformity gains Temp Comp Counts The temperature compensated counts that are sensor counts with application of temperature compensation Raw Counts Temperature compensated counts with application of uniformity gain Adjusted Counts Sum counts that are raw counts plus auxiliary raw counts In most applications this does not use auxiliary input so sum counts raw counts Source Decay Counts Sum counts with application of source decay gain Standardize Counts Displays standardize counts that are source decay counts with application of standardization gain Percent Count Range The compensated measurement counts that express as a percent of the counts at the high and low endpoints of the calibration determined with the two point initial calibration This quantity shows where the current measurement is in relation to the total count range count range 100 x CL Cs C1 Cy where Cg sum counts C Cy counts at Cal Low density and Cal High density C Cy counts range Percent Process Span The measurement value as a percent of the measurement span Enter the maximum and minimum density values in the Setup tab A graph of percent count range vs percent process span indicates the non linearity of the radiation transmission s measurement If using a table linearizer the valu
58. significantly Ohmview 2000 software writes entries immediately to the transmitter but a field communicator must be manually told to sends changes 1 8 DSGH Installation and Operation Guide Introduction Using Ohmview 2000 Software on a PC When you use a PC with MS Windows and a Pentium processor to communicate with the gauge or other VEGA HART transmitter field devices you must have a HART modem and the Ohmview 2000 software kit part number 243008 which includes Modem e Cables e Software Ohmview 2000 RS 485 Network Ohmview 2000 Logger and Ohmview 2000 Configurator software are Windows programs that emulate the Field Communicator Model 375 Ohmview 2000 e Charts the 4 mA 20 mA current output graphically Stores and retrieves configuration data to disk Enables offline editing of configurations rig File Communication Utilities Monitor Help Firmware Version 1 00 Tag DEMO Type Density Communication Statistics 100 Select Tabs Process Info Process Info Setup Process Value 4 500 Messages Messages Salle mA Output 4 50 mA Gauge Info Diegnasiics Process Variables Alarms s Counts High 400 00 Linearizer Type Counts Low 5000 00 Table Non linear Status Disconnect Example of Ohmview 2000 Software The Ohmview 2000 Software includes Main Ohmview 2000 software HART Communication Server e Launcher program e Ohmview 2000 Logger e Ohmview 2000 File Configurator D
59. sion 1 00 Tag DEMO Type Level Communication Statistics 100 Select Tabs Process Chain Test Gauge Status Diagnostics Diag History New Hardware You can view the newest Bracessiinio and oldest trigger records Ae Oldest Newest for these events oaa oaa alibration Sensor EEPROM Fail 07070 07070 Gaug m a Flash Fail 070 0 0 070 Real Time Clock Fail 0 0 0 0 0 0 Diagnostics Sensor Temp Probe Fail 0 0 0 00 0 Alarms New Hardware 070 0 070 0 CPU EEPROM Fail 070 0 070 0 Linearizer Type Unit Reset 0 0 0 0 0 0 stes Sensor Fail 0 070 0 0 0 Standardize Due 07070 07070 Status Source Wipe Due 070 0 0 0 0 Alarm 2 0 0 0 0 0 0 Shutter Check Due 07070 07070 Process Out Of Range 0 0 0 0 0 0 Disconnect The Diagnostics Diag History tab displays information about critical events Use this information to determine whether a problem recently occurred and was internally repaired example EEPROM corruption 5 8 DSGH Installation and Operation Guide Diagnostics and repair Troubleshooting Two circuit boards in the density gauge are field replaceable energizing before opening the Gen2000 for internal inspection to i Caution A minimum of 10 minutes should be allowed after de permit cooling and full capacitor discharge Circuit board identifications Power supply board Terminal block O RS 485 ground S if applicable E CPU board Internal housing groun
60. terminal intended for connection to an external conductor DSGH Installation and Operation Guide vii Preface Your comments Manual DSGH Installation and Operation Guide Date Customer Order Number Your contact information optional Name Title Company Address Did you find errors in this manual If so specify the error and page number Did you find this manual understandable usable and well organized Please make suggestions for improvement Was information you needed or would find helpful not in this manual Please specify Please send your comments to VEGA Americas Inc Director of Engineering 4241 Allendorf Drive Cincinnati OH 45209 1599 USA Fax 1 513 272 0133 viii DSGH Installation and Operation Guide CHAPTER INTRODUCTION 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 e Install e Maintain e Relocate e Repair e 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 11 for contact information Note See the Radiatio
61. ters 2 000 Use shielded wire per local code DSGH Installation and Operation Guide 2 7 Installation Connect positive terminals together Connect negative terminals together Connect ground terminals together System architecture Sensor locations Control room I I i Auxiliary frequency input GND i P3 i PC NA S RS 485 mA Interface Optional Input to modem DCS local Pot per local codes H Output signa Power l cable 1 4 Earth 7 l iOptional field communicator E Emerson 375 Communication The HART hand held terminal can connect anywhere across the 4 mA 20 mA wires to communicate with the gauge A minimum requirement is a 250 Q load resistance on the current loop A HART modem may connect across the 4 mA 20 mA wires to enable communication between the gauge and a PC ATEX ground Example GEN2000 density gauge wiring Process alarm override switch If the output relay is set as a process alarm relay high or low density alarm you can install an override switch to manually deactivate the alarm If you do not the process alarm relay de energizes only when the measured density is out of the alarm condition Conduit Conduit runs must be continuous and you must provide protection to prevent conduit moisture condensation from dripping into any housings or junction boxes Use sealant in the conduit or arrange the runs
62. that the unit is operational gt Note If you change the CPU board a New Hardware Found error message appears when you connect with the HART communicator This is normal Follow the procedure on page 4 6 for installing new hardware so the non volatile memory on the CPU configures properly Mounting Nuts Replace Power Supply or CPU Board Requesting field service Contact OVEGA Field Service at 1 513 272 0131 for parts service and repairs 5 16 DSGH Installation and Operation Guide Diagnostics and repair Returning equipment for repair to VEGA Have this information ready m M M M M M M M M Product model that is being returned for repair Description of the problem VEGA Customer Order C O Number Purchase order number for the repair service Shipping address Billing address Date needed Method of shipment Tax information Procedure 5 4 To return equipment for repair Contact your local Vega representative using the information on above and ask for repair service VEGA assigns the job a material return authorization MRA number gt Note You must first contact VEGA and receive a material return authorization number MRA before returning any equipment VEGA reserves the right to refuse any shipment not marked with the MRA number Indicate the MRA on the repair service purchase order Clearly mark the shipping package with the MRA number Send the confirming purchase order and th
63. the internal ground screw is located at the front of the housing The external ground screw is located next to the conduit entry Terminal Block os y r Power supply board RS 485 ground if applicable External housing CPU board ground a y gt Er Mounting bracket y Si are DSG Exploded View DSGH Installation and Operation Guide 2 5 Installation Customer Earth Ground and Ground to Housing PS O O DSG Perforated View 11 Power ii L AC or DC power input L2 Power in N RY NO Relay normally open RYC common RY NC normally closed Not used in HART applications eo Auxiliary input power 6V E Common Aux L Auxiliary input frequency signal Aux mA Current loop output OANA UAWHN 00000000000000 Interconnecting terminals GEN2000 with HART gt Note Not all connections are required for operation For example Terminal 10 6V Auxiliary Input Power may not be used with newer electronics The power input terminals are not polarity sensitive 2 6 DSGH Installation and Operation Guide Installation Power Caution Do not apply power until thoroughly checking all wiring The AC power source voltage input is 100 230 VAC 10 90 250 VAC at 50 60 Hz at 15 W or 25 W with optional heater maximum power consumption AC power must not be shared with transient producing loads Use an individual AC lighting circuit Supply a se
64. vega americas com All statements concerning scope of delivery application practical use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing VEGA Americas Inc Cincinnati Ohio USA 2011 Subject to change without prior notice 31392 US 111121
65. y alarm condition when it detects a radiation field above a set threshold The gauge sets the current loop output at its value 10 seconds before the condition It periodically dithers the output about the average cycling until the radiation field is back to the normal density or until a time out period of 60 minutes The standard x ray alarm only triggers when the counts are greater than the Cal Low count value These counts are found on the process variable menu If the x ray source is configured so the counts increase but do not exceed the Cal Low counts the x ray alarm does not trigger and the gauge reads the x ray interference as a true process shift Auxiliary x ray alarm To detect x rays that are causing process changes a second detector can be placed outside of the radiation beam of the primary detector The second detector only monitors x ray interference and has a frequency output that wires to the auxiliary input of the primary detector The primary detector s programming triggers the x ray alarm when the counts of the secondary detector are above a threshold Call VEGA for more information current loop output mA output 10s before x ray time ms l Dither time aaa Cycle period X ray interference alarm output DSGH Installation and Operation Guide 5 7 Diagnostics and repair History information Diag History tab P ohmview e A File Communication Utilities Monitor Help Firmware Ver
66. y obtainable For example if the process is water based or if the process is slurry with water as the carrier gt Note This method requires you to select Default Value and enter the Standardize Default Value on the SetUp Cal Parameters tab Advantages If the source of water is of consistent purity for example city vs pond standardization on water is highly accurate Water is a good choice if the density of the process is around 1 0SpG because standardization on water would be within the process span This ensures high accuracy at the point on the calibration curve Disadvantages You must be able to empty and fill the process pipe with a consistent source of water Standardization on process This method requires measuring the process in the pipe with the density gauge and entering the laboratory measured density into the software gt Note Select Lab Sample on the Setup Cal Parameters tab DSGH Installation and Operation Guide 3 9 Calibration Advantages Standardization on process is the easiest method It ensures the density gauge reads what the laboratory reads at that density Disadvantages It is not the most accurate or repeatable method In addition it requires a laboratory for results Standardization on absorber plates gt Note This method requires you to select Default Value and enter the Standardize Default Value on the SetUp Cal Parameters tab Absorber plates have the following features

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