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SAIC Exploranium – GR-135 System Manual 

 

 

 

 

 

 

            page: 23 

VS 2K – means that the vertical scale is currently 2K (2000cps).  This is automatically changed if 

any channel exceeds this limit.  

 

 

 

 

 

 

 

 

 
DETECTOR – NaI shows that the Sodium-Iodide detector is currently in use 
 
D.TIME – shows the Sodium-Iodide dead time as a % 
 
NEUT – The count rate for the Neutron detector in cts/sec 
 
CURSOR – KEV - CTS – the cursor position data in Channels and Counts 
 
ROI# - CTS – the ROI# and counts in the ROI in counts 
 
TIME – shows sample progress (42 secs currently) 
 
SET – shows the preset sample time of 60 seconds.  
 
The sample accumulates until the preset sample time is reached but the user can stop the sample at 
any time by pressing ENTER.  When the sample is complete it automatically activates the Nuclide ID 
mode and the display results as shown in Fig. 11 are seen. 
 

7.4.1    DATA OVERFLOW 

The maximum count possible in any channel is 65535 during a sample.  If any channel exceeds this 
level the channel data is flagged and “frozen” but the sample time continues until it is complete.  
This way the high count rates of lower energy nuclides do not inhibit the analysis of higher energy 
peaks 
 

7.5   SEE SPECTRUM 

This display shows the spectrum of the last sample analyzed.  The 
figure shows a typical display.   Data are defined as described in 6.4 
above.  The only difference is: 
 
TIME/SET - show the sample preset time period – the fact they 

are the same means the sample terminated at it’s full count 
(in this case no premature termination due to overflow) 

 
 
 

Fig. 15 

 
7.5.1   SEE SPECTRUM 

The display is only 128 pixels (dots) wide and the GR-135 utilizes a 
1024 channel spectrometer.  Thus if the full spectrum is displayed, 
each pixel shows the average of 8 actual data channels.  In many 
cases the user wants to inspect the spectrum in greater detail so a 
zoom feature is available.  To activate this feature press ENTER and 
a new display appears (Fig. 16): 
 
The cursor goes immediately to the ZOOM RETURN selection and 
if ENTER is pressed again it goes back to the ANALYSIS menu 
 

The other selections permit the zoom feature: 

X8 – this is the maximum zoom selection and sets the display to show 1 pixel = 1 channel.  This 

means that the full display now covers 128 channels = 384keV 

67

sp 1

range 0 - 3000keV

DEAD-TIME:30%     DET:NAI
CURSOR    1812KEV    1234CTS
ROI#:        1                  1200CTS
TIME:       60  S

SET: 60 S

MEAS
VS 2K

IDENTIFY

NEXT

ZOOM   8x
ZOOM   4x
ZOOM   2x
ZOOM   1x

RETURN

RANGE       470 - 854 keV

       STOP

DETECTOR      NAI

CURSOR 1025 KEV          65535 CTS

ROI NO          0              1234567 CTS

VS 2K

ANALYSIS

PEAK         662 KEV               220 CH:

TIME            30 S        SET           30 S

Содержание GR-135

Страница 1: ...GR 135 THE IDENTIFIER SYSTEM MANUAL Part 87317 1 Rev 3 4 July 2004 ...

Страница 2: ...12 5 0 DETAILED OPERATION GUIDE 13 5 1 JOYSTICK 13 5 2 POWER 13 5 3 SWITCHING FROM AUTOMATIC MODE TO MANUAL MODE 15 5 4 DISPLAY CONTRAST 16 5 5 MAIN MENU 16 5 6 STABILIZATION 17 5 7 EXTERNAL AUDIO 17 6 0 SEARCH DOSE 18 6 1 SEARCH MODE 18 6 2 HIGH DOSE 18 6 3 NEUTRON ALARM 19 6 4 SEARCH ALARM 19 6 5 SEARCH AUDIO 19 6 6 SEARCH MODE DATA RECORDING 19 7 0 IDENTIFY 21 7 1 IDENTIFY DISPLAY 21 7 2 ANALYS...

Страница 3: ... 30 10 0 SETUP 32 10 1 SEARCH 32 10 2 STABILIZE 34 10 3 IDENTIFY 35 10 3 1 DETECTOR 35 10 3 2 NaI 36 10 3 3 CZT 38 10 3 4 NEUTRON 38 10 4 DOSE 39 10 5 DATE TIME 40 10 6 ROIS 40 10 7 MISCELLANEOUS 40 11 0 MAINTENANCE 42 11 1 MAINTENANCE MENU 42 11 2 LIBRARY 42 11 3 CHARGING 42 11 4 REMOTE 42 11 5 DEFAULTS 43 11 5 ADC TEST 43 12 0 SPECIFICATIONS 44 APPENDIX A AUTOMATIC MODE OPERATION 48 APPENDIX B I...

Страница 4: ...SAIC Exploranium GR 135 System Manual page 4 APPENDIX J SENSOR LOCATIONS 76 APPENDIX X WARRANTY 77 APPENDIX Z DOCKING STATION TEST SOURCE SPECS 79 ...

Страница 5: ...SAIC Exploranium GR 135 System Manual page 5 GR 135 THE IDENTIFIER ...

Страница 6: ...ilizing a Sodium Iodide detector for high sensitivity and a G M detector for extended Dose Rate range This model replaces the older GR 130 model b GR 135N a 3 detector system in addition to the Sodium Iodide detector and G M detector there is an additional NEUTRON detector c GR 135CN a 4 detector system in addition to the Sodium Iodide G M and NEUTRON detectors this model incorporates an additiona...

Страница 7: ...the optional CZT detector is used the unit automatically decides on detector use as determined by the source signature so this is fully automatic 2 2 SYSTEM FEATURES a INSTRUMENT BODY The instrument body consists of 2 primary parts the lower case and top panel The lower case is deep formed aluminum that provides a strong basic structure The top panel is specially formed ABS plastic that minimizes ...

Страница 8: ...es excellent visibility in a low light environment The display contrast may also be manually adjusted depending on ambient light conditions The unit also incorporates automatic temperature compensation to maintain correct contrast even when the temperature substantially changes f BACK DOOR The GR 135 has a back door that is removable by a turn of the integrated handle The door may be removed to al...

Страница 9: ...feature means that a wide variety of battery types can be used in the instrument the user simply selects battery type and the charger automatically selects the correct charging parameters for this battery type i DOCKING STATION DS a Docking Station is normally supplied with the GR 135 This device is a cradle that the GR 135 unit sits in The cradle is connected to the AC connection has an internal ...

Страница 10: ...is supplied with a soft vinyl carrying case with shoulder strap for easy transportation of the GR 135 An easy open zipper flap allows access to the instrument while providing additional weather protection The carry case also has an external pocket for carrying notebooks etc n MANUAL This user manual is supplied with the instrument A special manual titled USER MANUAL AUTOMATIC mode which covers onl...

Страница 11: ...C Exploranium GR 135 System Manual page 11 3 0 JOYSTICK OPERATION The unit is supplied with a single button control device called THE JOYSTICK UP away from you LEFT RIGHT JOYSTICK ACTIONS DOWN towards you ...

Страница 12: ... unit will power ON and after a few seconds the MAIN MENU is shown e DOCKING STATION place the unit in the DS to charge the batteries f STABILIZE while in the DOCKING STATION which has an embedded 0 25uCi Cs137 stabilization source select STABILIZE then ENTER LONG DOWN and follow display prompts to automatically set the system gain e REMOVE from the DS and attach the Yellow boot for unit mechanica...

Страница 13: ...s ENTER is used to activate the selection highlighted on the display CLICK LEFT RIGHT SHORT click used in some menus to change parameters and in the Main Menu to adjust display contrast 5 2 POWER a BATTERIES The GR 135 has an integrated Battery Charging capability and operates with the supplied two D cell rechargeable NiCd batteries for Docking Station usage The internal battery charger permits th...

Страница 14: ...ws that the unit is in the MANUAL mode that permits full unit functionality d BACKLITE ON A BACKLITE option is built into the GR 135 such that the display may be viewed in low light conditions BACKLITE can be enabled in the system setup for frequent use or activated manually for intermittent use To enable the BACKLITE be sure that the unit is OFF then CLICK DOWN towards the user and HOLD the JOYST...

Страница 15: ...chargeable batteries To provide some level of warning of imminent battery life if the batteries fall below a certain level then a 3 beep audio occurs and the Battery ICON changes to the message LOW The user has between 2 and 10 minutes of measuring time left in the battery at this time When there is no longer enough power to allow measuring the GR 135 turns off Full Charge Charge Low Battery Warni...

Страница 16: ...item selected Menu items are selected by highlighting the desired item and using ENTER to activate the selection Fig 4 NOTE Manual contrast adjustment is only enabled during the first 60 seconds after power on This is to prevent inadvertent contrast adjustment during other system operations 60 seconds is usually long enough for adjusting contrast however if further adjustment is required switch th...

Страница 17: ...O On the rear of the unit is a special connector as shown in the rear view of the instrument shown in the figure external audio Normally this connecter is fitted with a sealing plug for weather protection However users with the optional external earphone can plug it into this socket When this occurs the internal audio is silenced and the audio tones are only audible through the external earphone T...

Страница 18: ...ails DOSE is the TOTAL DOSE accumulated from the point in time SEARCH DOSE mode was activated see Section 9 4 for more details STOP to stop this function press ENTER and the display will go back to the Main Menu If the user presses AND HOLDS the joystick in the ENTER position the display will stop updating and permit the user to inspect the data Releasing the joystick goes back to the menu 6 2 HIG...

Страница 19: ...e audio gives occasional beeps of low intensity audio on normal background this shows the user that the audio system is alive but in the presence of a real radioactive field the audio frequency changes rapidly With this feature it is very easy to scan back and forwards to readily locate the highest audio pitch which is the maximum radiation intensity 6 6 SEARCH MODE DATA RECORDING The data display...

Страница 20: ... to 6 SEARCH samples Therefore if a large number of separate SEARCH samples are stored in memory slightly less memory is available for samples than if the SEARCH was taken in one complete set When the internal DATA MEMORY is full as described above users should return to MAIN MENU ENTER and dump the data to an external PC as detailed in Appendix B To log data directly to a PC refer to Appendix B ...

Страница 21: ... is started from the MAIN MENU Section 7 2 7 8 cover a different mode of operation 7 1 IDENTIFY DISPLAY As the sample progresses the display is updated at a 1 sec rate as shown in Fig 10 until the preset sample time is reached For full details of this display see section 7 4 below Fig 10 ANALYSIS DISPLAY When the sample terminates the Nuclide Identification function is automatically activated The ...

Страница 22: ...ampling display shown in 7 1 above is shown and data accumulation begins again As the sample progresses the display is updated at a 1 sec rate as shown in Fig 14 until the preset sample time is reached NOTE If the IDENTIFY analysis capability is started from the START MEASUREMENT menu item then at the end of the sample the display goes to the ANALYSIS menu so the user can select subsequent actions...

Страница 23: ...This display shows the spectrum of the last sample analyzed The figure shows a typical display Data are defined as described in 6 4 above The only difference is TIME SET show the sample preset time period the fact they are the same means the sample terminated at it s full count in this case no premature termination due to overflow Fig 15 7 5 1 SEE SPECTRUM The display is only 128 pixels dots wide ...

Страница 24: ...wn as 470 854keV and this range is shown on the display If the user moves the cursor the cursor stays at the center of the display and the spectrum scrolls past it until the limits of the display are reached PEAK DISPLAY In the SEE SPECTRUM mode as the cursor moves across the display any peaks that have been identified in the analysis routine are highlighted and if the cursor enters this highlight...

Страница 25: ... of all the relevant peaks Non Identified this shows the sum of all the peaks that cannot be identified Usually these peaks are very small so they are suppressed in the simplified analysis screen as for most users they are confusing however for specialized users they may be of interest Note in the AUTO display any peaks that are statistically unimportant are suppressed HIGHLIGHTING when the displa...

Страница 26: ...ully automatic however in the MANUAL mode the user must use SETUP IDENTIFY DETECTOR and set DETECTOR CZT then carry out data analysis In this case the Sodium Iodide spectral analysis and the CZT spectral analysis are totally separate Fig 23 NOTE USERS ARE ADVISED THAT IN THE MANUAL MODE THE SODIUM IODIDE DATA ANALYSIS RESULTS ARE SEPARATE FROM THE CZT ANALYSIS RESULTS SO IT IS NECESSARY TO NOTE TH...

Страница 27: ... starts automatically stabilizing on the very small 0 25uCi Cesium source embedded in the DS The display shows system activity and advises the user when stabilization is complete During the entire time the unit spends in the DS the batteries are continually charged and the system is continually stabilized See full details in Appendix A 8 3 MANUAL STABILIZATION IN THE DOCKING STATION For normal ope...

Страница 28: ...be removed from the Docking Station and used However if the user is not ready then the GR 135 may be left in the DS to keep the batteries charged This process also keeps the unit warmed up as well as continuously charging the batteries so when not in use it is recommended that the unit remains in the DS NOTE In this software release automatic stabilization in the DS in the MANUAL mode is NOT suppo...

Страница 29: ...e is 8 bytes Thus a 10 sample record contains Header 47 bytes 10xSample 8 80 bytes Checksum 1 byte TOTAL 128 bytes Therefore the amount of memory space occupied by data is a function of how many samples are recorded The system automatically computes available space based on this information but considers the presence of only one set of header information and the rest being data If the user takes s...

Страница 30: ...Selecting DUMP will produce the display shown in fig 27 When the appropriate PC software is operating data may be transferred by CLICK DOWN Pushing the button up will cancel this function When data transfer is complete Fig 27 9 3 ERASE Selecting this function produces a new display The display shows Pressing the button down three times erases the data memory completely The first two times the butt...

Страница 31: ...the selected spectrum is selected and the MEM SCAN menu is shown The user may select PEAK ANALYSIS etc as required The features and displayed data are exactly the same as in the IDENTIFY features described in sections 6 4 etc Fig 28 MEM SCAN START MEAS SEE SPECTRUM PEAK ANALYSIS NUCLIDE IDENT MAIN MENU REANALYSIS ...

Страница 32: ... selection is advisable if the unit is being used in a continuous search mode and numeric data is required NOTE The Audio response is NOT affected by this time selection as it is updated at a fixed 20 times second rate c CHART RANGE This sets the maximum vertical chart scale in counts for the chart recorder display Selections are 64cps 128 256 512 1K 2K 4K 8K 16K 32K 64Kcps and AUTO Some users pre...

Страница 33: ...ich directly follows the radiation level Thus a sudden increase in radiation level will give a corresponding increase in audio pitch This is a very important feature of the SEARCH mode as it permits a very sensitive eyes free search tool The data is sampled at a 20Hz 50mSec rate with an optimized filter to give a quick audio response as radiation increases If this mode is selected then when the SE...

Страница 34: ...raw data only no data averaging 3P 3 point averaging 5P 5 point averaging 10P 10 point averaging 10 2 STABILIZE Selections are CZT FINE GAIN and RE STAB MODE 10 2 1 CZT FINE GAIN Set by Exploranium see system CALIBRATION SHEET for the correct setting The calibrated value for this parameter is stored in system memory When defaults are loaded the calibrated value is automatically loaded 10 2 2 RE ST...

Страница 35: ...only the Sodium Iodide NaI detector CZT is disabled if present CZT this selects only the optional CZT detector NaI is disabled b PILEUP this sets the Pile up rejector ON or OFF The Pile up rejector only applies to the NaI detector as the relative inefficiency of the CZT detector does not require this function So this parameter controls only the NaI data collection CZT analysis automatically disabl...

Страница 36: ... setting of 25 is a reasonable compromise for normal operation and prevents semi skilled users from having unnecessary concern when operating in the AUTO mode as unimportant peaks are just suppressed 10 3 2 NaI Selections here are a MEAS TIME sets the sample time in seconds for acquiring a Sodium Iodide spectrum in the IDENTIFY mode selections are 10 20 30 40 50 55 60 100 200 600 1200 1800 3600 se...

Страница 37: ...ount for all the pulses that would have been lost because the electronics were too busy to process the incoming pulse If LIVE mode is selected the preset sample period is AUTOMATICALLY extended by the Dead Time so the final data is automatically Dead Time corrected Thus if you set a 100 second sample period and there is a 10 Dead Time then the actual sample period will be approximately 110 seconds...

Страница 38: ...IBRATION SHEET for the correct value 10 3 4 NEUTRON This sets the parameters for the Neutron detector a N SUMMING Selects the data averaging Selections are OFF 3P 5P 10P this parameter only applies to the SEARCH mode data analysis The default selection 5P sets a 5 sample moving SUM for the data Users should note that this is NOT a moving average but a moving SUM The reason for this is to improve e...

Страница 39: ...s prefer to see the raw Neutron counts So this parameter permits the user to select what they require 10 4 DOSE These selections set the DOSE parameters a MEAS UNIT sets the Dose measurement units selections are R Sv Gy Gy GRAYS the system is calibrated to the AIR KERMA RATE for Dose in GRAYS R Roentgen a conversion factor is used GRAYS R x 114 NUREC ICRU 47 Sv Sievert Unit is directly calibrated ...

Страница 40: ...e Since all stored data is date stamped it is important to set this up correctly as an aid in locating data for data analysis Use LEFT RIGHT cursor to select the digit to change then UP DOWN to change it Ensure you follow the displayed conventions for Year Month etc to set the data correctly 10 6 ROIS This selection permits the user to select 3 ROIs to whatever channel range in the spectrum is req...

Страница 41: ...o is only recommended when essential d ACTIVE LIBR this sets the Library used for analysis selections are STAND Standard MEDIC Medical INDUST Industrial WASTE Waste sites or USER These libraries have been selected as optimum for the different applications However some users have special requirements and require a special library In this release of software all special libraries must be constructed...

Страница 42: ...ribed in Appendix B This setting works as a latch the first activation sets the port ACTIVE and the next activation sets it INACTIVE Normally the port should be INACTIVE for normal system functions In the system architecture the RS232 port and the AUDIO sound share a common data point This is normally not an issue as the Audio is not normally active during RS232 functions Users are advised that wh...

Страница 43: ...figure appears NOTE LOADING DEFAULT PARAMETERS ERASES ALL DATA MEMORY SO IF NECESSARY THE USER SHOULD SAVE THE DATA USING IdentiView BEFORE LOADING DEFAULTS As the display shows press ENTER 3 times to activate this feature The screen then shows the figure on the right The unit will return to the Maintenance screen when defaults have been loaded Fig 40 11 5 ADC TEST This special feature is used dur...

Страница 44: ...tion Better than 11 0 FWHM for Barium 133 at 81 keV ANALOG TO DIGITAL CONVERTER Type Buffered high speed high linearity 8 ΦS Successive Approximation ADC of channels 1024 Lower threshold Internally adjustable set at 15keV Upper threshold Fixed to Ch 1023 all pulses above this level are Cosmic and are accumulated and displayed in Channel 1024 ADC Offset Internally adjustable Maximum Count per Chann...

Страница 45: ...187 spectra IDENTIFY mode 1024 channels including time date Data Retention Time Typically 10 years limited by Li battery life Stored Data Retrieval Via serial channel to a computer DATA OUTPUT Type Serial channel RS 232C 1 start bit 8 data bits no parity 1 stop bit Baud Rate 19200 Bd Format Binary data in packets see Appendix I GENERAL DATA DISPLAY Type WTSTN Wide Temperature Super Twist Nematic g...

Страница 46: ...mm power circular jack on the center pin Mating connector 2 5 mm power circular plug Serial Channel 3 5 mm stereo jack Mating connector 3 5 mm stereo plug Docking Station 4 spring loaded pins for power and RS232 PHYSICAL Dimensions L 9 25 235 mm W 4 5 110 mm H 3 9 100 mm 6 75 170 mm including handle Weight 1 9 kg 4 4 lbs without battery 2 4 kg 5 5 lbs including battery ENVIRONMENTAL Operating Temp...

Страница 47: ... ROM with IdentiView Windows software RS 232 cable for PC connection Reference Source Cesium 137 0 25 µCi Operating Manual Padded compartmentalized carrying case Optional 220 VAC Charger Adapter for battery charging DOCKING STATION for automatic charging and PC connection External earphone system 2uCi Cs source if permitted by local regulations ...

Страница 48: ...hows LEFT RIGHT UP away from you and DOWN towards you are the 4 normal actions of the joystick For mechanical reasons the user can also press the button IN into the handle BUT THIS HAS NO EFFECT AT ALL For ease of use the system is arranged so ANY ACTION EXCEPT UP is considered an action and is referred to in this manual as ENTER This means that LEFT RIGHT and DOWN towards you any of these actions...

Страница 49: ... the DS Place the GR 135 unit in the DS so the pads match the pins the rim around the DS ensures that correct positioning of the unit in the DS is very easy The audio should beep as the unit is automatically switched ON as it is seated in the DS The front panel CHARGE YELLOW light on the DS should come ON to show that the batteries are charging A 5 STARTUP DISPLAYS The unit automatically switches ...

Страница 50: ...ly occurs when the unit is first put in use or if the unit has been left out of the DS for an extended period of time see section 10 2 c SYSTEM READY Once the system has AUTOMATICALLY adjusted the basic system parameters correctly the display shows SYSTEM READY means that internal parameters are set correctly REMOVE WHEN REQUIRED means the unit is ready for use As commented above if this is a firs...

Страница 51: ...en the unit is removed from the DS this mode is automatically selected and the display shows the SEARCH display see fig Data displayed are SEARCH the function currently activated i e SEARCH a battery icon that shows battery status TOTAL an operating mode set by the supervisor 1234 this is the radiation level in cps counts per second This level will always show some counts even if no apparent radio...

Страница 52: ...is bar graph Once the is limit is exceeded the user is warned see the HIGH DOSE section A 10 below PRESS ENTER TO IDENTIFY pressing the JOYSTICK is referred to as ENTER so the user is advised that pressing ENTER will change the operating mode to the IDENTIFY mode described below As noted above when the center of the radiation is located in the SEARCH mode then the user presses ENTER to analyze the...

Страница 53: ...s library can be updated so in future this type of material would be identified UP TO REPEAT SAMPLE sometimes if the radiation levels of the material being analyzed are very low it is possible that at the end of a 60 second sample period the analysis of the sample may show NO NUCLIDES FOUND In some cases the user may wish to take a longer sample to improve the analysis If the button is pressed UP ...

Страница 54: ... prolonged operation significantly above this level is not recommended A 11 NEUTRON ALARM If the integrated Neutron detector computes an alarm above it s preset alarm threshold then a Neutron Alarm is declared A distinctive audio warning tone occurs and the display changes see fig A 12 NEUTRONS DETECTED DURING IDENTIFY If any Neutron activity is detected during IDENTIFY this data is shown on the d...

Страница 55: ...spectrum was also stored so at the end of the CZT spectrum period the displayed stored spectrum is for the CZT and the one before is the NaI spectra Thus if after CZT analysis the spectra is stored as SPECTRUM 9 then SPECTRUM 8 is the related NaI spectrum after data storage the spectra from the NaI and CZT are automatically analyzed and the combined result shown to the user on the display NOTE CZT...

Страница 56: ...ng the BACKLITE feature allows the user to use the remaining battery life optimally Note that to turn off the BACKLITE the unit must be switched OFF then switched ON again with the normal short click action The BACKLITE feature may be selected to be ON all the time for some applications but users should be aware that enabling the BACKLITE feature reduces battery life by an estimated 50 A 16 LOW BA...

Страница 57: ...x is the version number Select the file setup exe and click OK 3 Select desired install location default C IdentiView 4 Click FINISH After some screen activity the screen should show Successful Installation 5 Once the IdentiView Application program appears right click and use Send to to setup an icon on the Desktop 6 Close this window 7 Follow screen prompts to install the LabView engine software ...

Страница 58: ...d the GR135 are both powered on If the icon is still not visible remove the GR135 from the DS and power off Exit the software File Exit restart the software then place the GR135 in the DS If the icon is still incorrect contact Exploranium 3 2 DOWNLOADING DATA As soon as the IdentiView software recognizes that the GR135 is in the Docking Station it automatically starts to download the data and the ...

Страница 59: ...nied by a numerical value based on the number of set bits in the message The receiving station then applies the same formula to the message and checks to make sure the accompanying numerical value is the same If not the receiver can assume that the message has been garbled IdentiView has two checksum processes Transfer occurs during RS232 download only A transfer error can occur due to improper pa...

Страница 60: ...pe libraries The installed LabView software comes with a standard isotope library You can load this library or other isotope libraries into your IdentiView software 1 Click the Upload Library button on the main screen The Library dialog box appears 2 Click the Select Library Directory button The Select a Library Directory dialog appears 3 Find a library folder and click the Select Cur Dir button 4...

Страница 61: ...default value is 3 0 Upper signal to noise threshold This is the level at which peaks are considered to be significant and can be used to identify isotopes Unidentified peaks above this level are shown as a red line The default value is 6 0 Sum of all peaks signal to noise threshold This is a threshold that will reduce the number of false positives by requiring that for each isotope identified the...

Страница 62: ...utomatically set every time the unit is placed in the docking station Synchronize off Allows you to set the time manually Date format Lets you choose one of the following options for displaying the date MMM DD YYYY MM DD YYYY DD MM YYYY YYYY MM DD 3 4 VIEWING SPECTRA DATA Once the spectra have been down loaded and stored on the PC they can be inspected Click the View Spectra Data button to see the...

Страница 63: ...135 is the same as the one that can be loaded for analysis The data will be re analyzed with the new isotope library The registry will remember the last library selected and will always use that library CZT data is shown in the same manner In the event that CZT spectra have been collected the software recognizes this and changes the labels at the middle right to define which detector the spectrum ...

Страница 64: ...ns the cursor to its normal state Examining the spectra in detail You can examine on certain portions of the spectra in more detail by using the Cursor Legend 1 Turn off Auto scaling by clicking the Scale menu and deselecting X Auto Scale and Y Auto Scale 2 If you don t see the Cursor Legend right click anywhere on the graph select Visible Items and select Cursor Legend from the sub menu The Curso...

Страница 65: ... button on the IdentiView main screen The Chart display appears Identifies the GR 135 unit firmware version sample time and date and time of the spectrum Each specific has its own date time stamp Adjust cps scale Gamma data Neutron data Plot Legend enabled from Visible items on the context menu gives you various styles and options for displaying the spectra Sets the average for the number of data ...

Страница 66: ...as part of the setup 3 7 EXPORTING DATA From the main display you can choose to export spectra search and or dose data to a separate file The box to the right of each export function shows the number of spectra The exported data is reformatted and stored under a similar filename with at txt extension These data are Live Time corrected and stored in an ASCII text format that permits direct loading ...

Страница 67: ...mits ASCII or GBS GBS data is a standard used by the IAEA for data analysis ASCII is text data that can be easily imported into any spreadsheet Click Continue to save the data to any required location We recommend a txt file extension if ASCII format is selected to make it easier to import into Excel as required However since this will be an ASCII file then the user can use it as required The save...

Страница 68: ...SAIC Exploranium GR 135 System Manual page 68 ...

Страница 69: ...STABILIZE then proceed as described in Section 7 3 except in this case the source is held against the face of the unit rather than sitting the unit in the DS b AUTOMATIC MODE In this case it is necessary to let the unit think it is in the DS as the Automatic mode functions are optimized for this mode of operation This is easily done as follows place the Test Source against the face of the instrume...

Страница 70: ... may be insufficient Approximately 8 to 10 hours of charging is required to charge a fully discharged set of batteries NOTE APPLYING EXTERNAL POWER TO THE GR135 OPERATES THE UNIT BUT ALSO CHARGES THE BATTERIES THE BATTERY CHARGERS PROVIDED WITH THE GR 135 IS FOR USE WITH NICD D CELL BATTERIES ONLY OPERATING THE CHARGER WHILE ALKALINE BATTERIES ARE IN THE UNIT MAY CAUSE BATTERY LEAKAGE AND MAY SERI...

Страница 71: ... an appropriate library to fulfill their special requirements Note that a future software release will permit 5 libraries to be stored in memory and the user can select the appropriate library required for special functions as required The current list of nuclides in the library are Library names S Standard M Medical I Industrial W Waste U User Labels in columns I labeled as Industrial M Medical S...

Страница 72: ... 2 connectors on the rear for external DC and RS232 connection 2 LEDs The 3 LEDs operation is as follows ERROR RED POWER GREEN CHARGE YELLOW DS STATUS OFF ON ON CHARGING OFF ON FLASH END OF CHARGING OFF ON OFF ALKALINE batteries in 135 or Battery fully charged FLASH ON OFF DOCK EMPTY OFF FLASH OFF ERROR 1 ON ON ON ERROR 2 FLASH ON FLASH ERROR 3 OFF OFF OFF NO INPUT POWER Error 1 Low Input Voltage ...

Страница 73: ...600 1200 1800 3600 5400secs MEAS MODE CLOCK LIVE CLOCK REP ADC 1024 1024 AUDIO ON ON OFF GAIN CORR ON ON OFF CZT MEAS TIME 300 10 100 200 600 1200 1800 3600 5400secs MEAS MODE CLOCK LIVE CLOCK ADC 1024 1024 AUDIO ON ON OFF CZT OFFSET read 10 10 NEUTRON N SUMMING 3P OFF 3P 5P 10P ALARM LEVEL 3 OFF 1 2 3 4 5 6 7 8 9 10 20 50 100 SAMPLE TIME 1 1 2 3 4 5 6 7 8 9 10 15 20 50 100 N IDENT THR 5 OFF 1 2 3...

Страница 74: ...splay shows UP WIPE ENTER IDENTIFY 5 Click UP for WIPE The display shows the message BACKGROUND NEEDED MOVE AWAY FROM VEHICLE THEN PRESS ENTER 6 Move the GR135 at least 10ft away from any vehicle in the SEARCH mode keep the test sample bag at least 3 ft away from the GR135 and check that the local Dose Rate where the test will be carried out is below 10uR h then press ENTER Higher background will ...

Страница 75: ... system will give a special warning as follows The process is 1 Press ENTER until the display shows the SEARCH mode The bottom of the display shows UP WIPE ENTER IDENTIFY 2 Click UP for WIPE The display shows the message BACKGROUND NEEDED MOVE AWAY FROM VEHICLE THEN PRESS ENTER 3 Move the GR135 at least 10ft away from any vehicle then press ENTER 4 At this time if the local Background is above 20u...

Страница 76: ...SAIC Exploranium GR 135 System Manual page 76 APPENDIX J SENSOR LOCATIONS ...

Страница 77: ...oes not cover consumables or damage caused by improper use or unauthorized repairs To make a warranty claim the product must be returned freight prepaid to SAIC Exploranium s factory in Mississauga Canada Exploranium will repair or replace the product at its discretion and return the product freight prepaid Ship to SAIC EXPLORANIUM 6108 Edwards Blvd Mississauga Ontario L5T 2V7 Canada Attn Service ...

Страница 78: ...SAIC Exploranium GR 135 System Manual page 78 APPENDIX Y MANUAL CHANGES Updated for Identiview software version 7 6 Feb 2004 ...

Страница 79: ...ckaging shipping paper and certification marking and labeling requirements of this subchapter and requirements of this subpart if a Each package meets the general design requirements of 173 410 b The activity of the instrument or article does not exceed the relevant limit listed in table 7 in 173 425 c The total activity per package does not exceed the relevant limit listed in table 7 in 173 425 d...

Страница 80: ...ispose the source accordingly External check sources Licensing Requirements Radioactive material contained in these sources is exempt from USNRC or US Agreement State licensing requirements Safe Handling Although quantities of radioactive material contained in these products are extremely small the basic radiation protection principles of time distance and shielding should be practiced as effectiv...

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