product manual
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1. Now to erase all previous readings press A or W lbuttons This will clear entire sample data 5 2 1 7 ACQUIRE amp GENERATE PLATEAU DATA Using this option plateau response of a GM detector for different EHTs can be acquired for the default preset time Plateau data is generated for EHTs starting from 300V to 675V in steps of 25V and recorded automatically in E2PROM to do so first AAAdetector channel is to be selected amp A AAdetector will have to be connected to the instrument Press PROG key to select below menu option Nv C C C GENERATE BH LI LM start HV in the OLI A PLATEAU NOW FORBI ata press START button On pressing will be set to 300V and acquisition will e as shown in below screen XXXX A Blinks Acquiring CNT XXXXXX Now acquisition will go on fo o x P TIME secs and each of the readings at 300V 325V 675V will be stored automatically PRINT PLATEAU DATA Now to print the plateau data onto the printer port press A or V Abuttons Once all the above settings are set user can begin actual acquisition 5 2 1 9 VIEWING OF BAUD RATE Using this option baud rate used for communication with instrument can be viewed Press PROG key to select below menu option C C C BAUD RATE BH i 20 5 2 1 10 PARALYSIS TIME Press PROG key to select below menu option LL IL B PARALYSIS OFF Now to print the plateau data onto the printer port press A2. b g deviation of the reduced by increasing the counting time and lowerin ackground The lower the MDA the more accurately the activity of samples with low w counting rates can be determined Example what is the MDA in dpm for a counter with a back efficiency of 50 for the nuclide of interest MDA 3 X 750 10 min 8 net cpm N S cpm N nd of 750 counts in ten minutes and an n 6 oscd 16dpm or 7 2 X 10 uCi 1Bq 22 7 X 10 Ci C 16 dom 0 266 dps AN 0 266 Ba 0 266 X 2 7 X 10 Ci 0 7199 X 10 Ci 7 199 X 10 Ci N 7 2 X 10 uCi C 12 CHAPTER III 3 1 3 1 1 2 1 2 a b c d e 3 1 3 dus 3424 1 Duis FRONT amp REAR PANEL CONTROLS amp INDICATIONS FRONT PANEL CONTROLS AND INDICATIONS POWER ON SWITCH This is a miniature ROCKER switch which is used to power up the unit When the switch is put ON the mains AC power is made available to the unit INTELLIGENT KEYPAD PROG key button This key is an important key which facilities the iser to programme for the Nf are covered under CHAPTER VII OPERATING INSTRUCTIONS START key button This is used for starting of acquisition once all the programme parameters have been set STOP key button This key can be used to termi ate acquisition and printing in between In the REAR PANEL CONTROLS AND INDICATIONS DC SOCKET This is used to connect 12V adaptor SCINT PROBE This is
3. N 42 17 e Complies to IS 9000 part III amp V for climatic test e Complies to Interference test as per IEC61000 or equ Detector testing A 2 Instrument has provision for interfacing with GM detectors of different types makes It is capable of calculating the plateau and slope of the detectors For this purpose the counti g stem can be programmed to vary the EHT i in steps and to carry out the counting for a given time interval B Both the EHT step size and the Detector probe assemblies Instrument is supplied with five types of detector probes tw excepting for side window GM detector End Window GM detector probe Wide End window probe consisting o d equivalent with 1 dia 3 4 mg c x 2 thi socket Side Window GM detector issembly consists of an ZnS Ag Scintillator approximately 20 mg sq cm on Perspex covered aluminized pin hole free light resistant mylar film The Scintillator is optically coupled to a suitable photomultiplier tube along with an appropriate low noise pre amplifier etc The probe is provided with a drawer arrangement for 1 dia 2 dia sample filter paper for air activity measurement e Detection Efficiency Greater than 25 for plutonium alphas over complete detector area e Probe Construction Suitable for table top mounting With a strong base plate and drawer assembly with sample holder Beta Scintillation detector The beta scintillation detector consists of
4. a Plastic Scintillator which is optically coupled to a suitable photomultiplier tube along with an appropriate low noise pre amplifier etc The detector assembly is housed in a lead castle with door arrangement for loading of samples The probe is mounted on a base provided with a drawer type arrangement for 1 dia 2 dia sample filter paper measurement e Probe Construction Suitable for table mounting With a strong base plate and drawer assembly with sample holder Covered with lead shielding Gamma Scintillation detector The gamma scintillation detector supplies is of a Nal TI Scintillator of 2 dia x 2 thick or ordered size which is optically coupled to a suitable photomultiplier tube along with an appropriate low noise pre amplifier etc The 7 detector assembly is housed in a lead castle with door arrangement for loading of samples The probe shall be provided with a drawer type arrangement for 1 dia 2 dia sample filter paper measurement Computer Interface The Counting system has an Ethernet PCB port for interfacing with a PC The PC and the counting systems operate in a host slave configuration in a multi drop network through this interface The PC as the host give commands and sends queries The counting system carries out various functions as per the commands and provides required information in response to the queries The firmware of the instrument is able to send the instrument data like Instrument ID Instrumen
5. amp date of STD data can be viewed by selecting below menu option by pressing PROG key L IL IL I B EFF XX XX XX XX AT 5 2 3 2 TO SET PRESET TIME The last acquired time amp date of BG data can be viewed by selecti PROG key UOL B E JN LIE 5 2 3 3 TO SET DPS OF STD Select below menu opti ing PROG button STD DPS XXXX To adjust the current DPS to desired value use A or W buttons 5 2 3 4 TO ACQUIRE FOR STD Select the below menu option by pressing PROG button EEE B Now press STAHT key for acquiring STD for the selected B preset time TO ACQ STD PRESS START KEY EIN Once acquisition for BG amp STD is complete user may now acquire for samples 22 5 2 4 TO ENTER SAMPLE MODE Select the below menu option by pressing PROG button L JL IL B Now using A or V buttons select SAMPLE mode if any E E E other mode is displayed LIE ACQ MODE XXXXXX Now by pressing PROG button different sub menu options under ACQ mode menu can be chosen 5 2 4 1 TO SET PRESET TIME The last acquired time amp date of BG data can be viewed by selecting below menu option by pressing PROG key L IL IL B m IN LII Now using A or V the requirement 5 2 4 2 TO SET LABEL OF THE SAMPLE 2 select below menu option by pressing PROG b itto LIL IL B data is an alphanumeric data A Z 0 9 amp the balance 2 are digits 0 9 VOLUME XXX
6. of the probe as given by the manufacturer or after checking it with a standard source one can calculate the activity of sample under study D o 26 STUDENT EXPERIMENTS WITH BETA PROBE CONNECTED TO RADIATION COUNTING SYSTEM Experiment 1 Calculation of gross beta efficiency of the beta probe End window GM tube based Beta probe plastic scintillator beta probe with a known DPS Disintegration per second of a Beta standard source Here it is assumed that efficiency of Beta probe is unknown Items Required a Radiation Counting System with AC mains cord b Beta Probe with connecting cable c Beta standard source known activity DPS Procedure 1 Make connections to Radiation Counting System with Beta probe 2 Power up the Radiation Counting System unit amp increase the HV to Beta probe to operating voltage 3 Fora known preset time say 1 minute take background BG counts 4 Now place standard Beta source of known DPS amp count for same time 5 By subtracting the BG obtain net counts CPM 6 Take ratio of CPM Vs DPM to obtain efficiency of the probe Experiment 2 Calculation of unknown sample gross Beta activity by knowi probe with Radiation Counting System efficiency of the Beta Items Required a Radiation Counting System with AC mains cord b Beta Probe with known efficiency c Sample prepared deposited on a SS planchat or SS pa Procedure 1 Make connections to Radiation Countin
7. than 6 0 lakhs during one year warrantee free service is offered at site Field service Engineer will be deputed subject to warrantee terms amp conditions e Th Yot include personal computer related problems for which local computer service provi f the PC vendor is to be contacted Also for software related oo online support e When the equipments are sent to our works for warrantee services they are to be properly packed with adequate cushion to prevent any transportation damages Nucleonix Systems is not responsible for damages or loss during transportation e Packing Freight charge is to be borne by customer when he sends the equipment to our works However when we return after servicing packing will be Nucleonix responsibility amp Freight charges will be to your account Only services are free e Please indicate in your correspondence equipment model amp serial number All the equipments are to be sent to our works only on door delivery basis For Door Delivery Transportation contact XPS GATI cargo in your city town or a reliable courier service to pick the consignment from your place For their nearest local address amp phone no s look into their websites Transit insurance if the customer feels is necessary it is to be covered e Nucleonix Systems will not receive the equipments sent by other modes of transportation such as Rail Road e After servicing equipments will be sent back by same mode of transport such as XPS GATI C
8. 00V It has good plateau length and plateau slope Its operating voltage is approximately 500V It is enclosed in a PVC cylindrical enclosure for protection amp supplied An MHV socket provided on one side of the PVC enclosure facilitates one to connect to detector socket on rear panel of the counting system SPECIFICATIONS Application Suitable for Beta sample Counting Operating Voltage A Range 450 750V Tube Dimensions Max Over all length 1 93 inches Gamma Sensitivity l 50 cps mR hr with Co 60 Background with 40mm lead shielding 20cpm Efficiency at 1 cm 9 ical a TI 204 15 b Sr 90 2096 c Am 241 796 d Cs 137 3 Max Diameter d 1 13 inches Gas filled Ne Hal End Window mica 2 0 mg cm sq density E BETA SCINTILLATION PROBE PLASTIC SCINTILLATION BASED TYPE SBP 2 Beta probe assembly type SBP 2 is a plastic scintillator based assembly consisting of 2 Dia scintillator coupled to 2 PMT It has thin aluminized foil as Beta entrance window It is primarily designed to serve as a Beta Probe when connected to a Radiation Counting System Operating Voltage Range 900 1000V Background typical with 40 mm lead shielding lt 110 cpm Efficiency typical for a Sr 90 at 1 cm gt 40 b TI 204 gt 18 10 F GAMMA SCINTILLATION PROBE WITH STAND This essentially consists of a 2 x 2 Nal Integral detector with PMT HV bleeder wired amp enclosed in a cylindric
9. Co 60 standard housed in a CRC 2 camera operated remotely viewed through CCTV arrangement High dose rate survey meters High level Area monitors etc are calibrated in this lab This CRC 2 camera is housed in a separate concrete building All the radiation monitors manufactured by Nucleonix Systems are authentically calibrated at this facility before they are shipped dispatched oa 27 i CRC 2 camera has Co 60 standard obtained from Bhabha Atomic Research Centre Mumbai It is a certified source ANNUAL MAINTENANCE CONTRACT AMC Annual maintenance contract AMC services For all sophisticated instruments amp systems and also for installed monitors amp networked systems in a nuclear facility or a Radiological lab or in a Medical cyclotron facility where no of instruments are networked it is advised that customer enters into an economical Annual maintenance contract with Nucleonix system Detailed AMC proposal can be obtained from our customer support division CSD by giving required inputs Inputs required by our CSD to send you AMC proposal e Name year amp data of purchase Sl Nos of equipments Model No s No of equipments for which AMC is required Additionally no of calls per annum required for preventive amp breakdown maintenance may also be indicated Advantage of entering into AMC e Equipment services offered will be prompt amp timely e Nucleonix systems maintain required spares spare teste
10. INSTRUCTION MANUAL RADIATION COUNTING SYSTEM AT NUCLEONIX SYSTEMS PRIVATE LIMITED Plot No 162 A amp B Phase II I D A Cherlapally Hyderabad 500 051 Ph 91 040 27263701 Fax 27262146 e mail info nucleonix com File Name RC605A Man Date 13 08 2014 CONTENTS CHAPTER No Title of the contents Page No Unpacking CHAPTER I Introduction 04 05 CHAPTER II Technical Specifications K 06 11 CHAPTER III Front panel and Side panel controls EM 12 14 CHAPTER IV Block diagram Description Q 15 16 CHAPTER V Operating Instructions C 17 23 CHAPTER VI Procedure for Alpha Be ctivity Calculations 24 26 CHAPTER VII Calculations for x ctable activity 27 27 CHAPTER VIII Availing of e pment aintenance calibration services and warranty clause 28 31 S e KS UNPACKING Radiation Counting System Type RC605A with accessories has been thoroughly tested and is dispatched in ready to assemble condition However on unpacking and prior to operation it is advisable to check visually and make sure that there is no visible damage caused in transit Also checkup the items instrument sub systems accessories cables etc physically by verifying with the packing list contents for correct types amp quantities Any discrepancy if found may please be communicated by email to Head Customer support division Typical packed carton amp wooden crates contain a Radiation counting system RC605A b Detector probe s wi
11. ODE Select below menu option by pressing PROG if any other menu HN _ option is displayed B i ACQ MODE SETUP L HN Now select using A or Wbuttons SET UP mode if any other a un mode is displayed Now by pressing PROG button different sub menu options under setup menu can be chosen 18 5 2 1 1 PASSWORD SETTING Select below menu option by pressing PROG if any other menu E option is displayed LIE PASSWORD XXXX Now select using A or Wbuttons set the given password Now by pressing PROG button different sub menu options under setup menu can be chosen 5 2 1 2 SELECTION OF DETECTOR TYPE Press PROG key to select below menu option LIL IL B m m LII 5 2 1 3 HV ADJUSTMENT LIL IL B Press PROG key to select below menu option PARALYSIS OFF The user can select appropriate paralysis time by using A or W keys It can be set to OFF 250u sec 350u sec 550p sec 5 2 1 5 SELECTION OF INSTRUMENT ID Using this option assign a unique address to the instrument for RS485 Communications Press PROG key to select below menu option C C C INSTRUMENT B ADDRESS Now select using A or W buttons set the given password Now using A or Wbuttons assign a unique ID to the instrument between 0 99 19 5 2 1 6 CLEAR SAMPLE READINGS Using this option all the sample readings are erased Press PROG key to select below menu option C C C ERASE SAMPLE B DATA
12. OURIER RPP 29 b 7 3 a e All types of Radiation detectors glass ware PMTs etc which are fragile are not covered in warrantee if the failure is due to physical damage external or internal due to shock dropping miss handling etc If the failure is due to a natural fault then only it is covered under warrantee for a limited period of three months However complete electronics is covered for 1 year warrantee e You can also send the equipment personally to our works for repairs either during or after warrantee after fixing up with our service dept Customer Support Division If possible we may repair on same day or your person can stay for a day or two amp get it repaired amp or calibrated After warrantee Services e On expiry of 1yr warrantee if you like to send the equipment low cost less than 6 0 lakhs for repairs to our works you may please observe the following procedure e Send an e mail with details mentioning that you agree to pay service charges which includes Basic service charges per unit module in the range of Rs 2500 to Rs 10 000 depending on the sophistication of the unit calibration charges if applicable for your SDE ERN cost of components packing charges Return Freight charges actual e Once our customer support department responds amp requests you to despat sh the equipment to our works for repairs you may do so by following the steps given below 2 e Followed by this you can send t
13. XML By using A or V buttons adjust the volume of sample as required enu option 5 2 4 3 TO SET VOLUME Select below men 5 2 4 4 TO SET NO OF ITERATIONS Select below menu option by pressing PROG button gO ITERATIONS ii XX Now using A or VW buttons the no of iterations can be set 23 5 2 4 5 TO PRINT SAMPLE DATA Select below menu option by pressing PROG button Noo PRINT DATA ii Now press A or V button to take a printout on the connected printer 5 2 4 6 TO RECALL DATA Select below menu option by pressing PROG button LIL IL B RECXXX XXX CPMXXXX XX XX XXXXX Now press A or V button to view T y 5 2 4 7 TO ACQUIRE FOR SAMPLE N Select the below menu option by pressing PROG button OC B Z LILI W TO ACQ SAMPLE EH PRESS START KEY EM Now press START key for acquiring BG for the selected preset 24 CHAPTER VI PROCEDURE FOR ALPHA BETA SAMPLE ACTIVITY CALCULATIONS Nucleonix make Radiation Counting System RC605 has built in embedded software which will facilitate the user to perform the above calculations and generate reports on connected printer or through RS232 RS485 port on a remote PC using data communication software The following is the procedure for activity calculation in Bq mR or Bg ms After connecting the system to appropriate probe a or B switch ON the unit and select detector type apply required operating voltage to th
14. a UHF socket to which scintillation detector probe Alpha or Beta plastic Scintillator based detector or Gamma scintillation Nal detector of Nucleonix make or its equivalent can be connected through a MHV to UHF cable The system will work as an Alpha Beta Gamma counting system under this condition with appropriate probe 13 dubi d 3 2 4 3 2 5 3 2 6 dui s 3 2 8 G M DETECTOR This is a UHF socket to which End window GM detector GM125 End window detector probe or GM detector LND 72314 or its equivalent can be connected through a MHV to MHV cable TO PRINTER This is a 25 pin D female connector through which one can connect a printer with centronics interface cable for direct printing of data EHT 0 1500V MHV SOCKET This is a HV output socket provided for checking HV output MINIATURE BANANA SOCKET TEST POINTS for LV supplies These are provided on the rear panel as test points for 45V 12V 24V amp GND TEST INPUT S A GM This is a BNC socket at which a ve test tail pulse is injected for testing of the functionality of Ethernet Connector Ethernet modbus connector o 14 O eee ADIATION COUNTING SYSTEM A xe Fig a Front view of Radiation counting system RC605A LM INL Fig b Rear view of Radiation counting system RC605A 15 CHAPTER IV BLOCK DIAGRAM DESCRIPTION While going through these following paragraphs please refer to the block diagram given
15. al shell with appropriate connector brought out for applying HV bias to PMT amp also for taking signal output to the Radiation Counting System This probe with Nal crystal facing downwards is placed in a sample holder having slotted arrangement for placing sample tray Samples either filter paper deposited air activity sample or in a SS planchet can be kept for gross gamma activity counting This Radiation counting system cannot be used for selection of a specific energy band For applications requiring counting for a specific energy band on e has opt for Gamma ray spectrometer NV 11 MINIMUM DETECTABLE ACTIVITY The minimum detectable activity MDA is that amount of activity which is the same counting time gives a count which is different from the background by three times the standard deviation of the background counting rate MDA Bkg cpm 3 X Bkg t Example What is the MDA for a counter with a background of 750 counts in ten minutes MDA 75 cpm 3 X 750 10 min 83 gross cpm Thus any gross count over 83 cpm can be considered to be due to radioactivity However the MDA for a counting system must be expressed in terms of a net count so that the results can be converted to dom or uCi Thus the MDA becomes S ide MDA 3 X Bkg t To calculate the MDA in dpm for a known nuclide divide by the efficiency of the Report the MDA for any nuclide for which a net count of zero is rng fie b r never the standard
16. counting c If it is a filter paper deposited air activity sample from a Nuclear facility it can be straightaway counted d If it is a soil sample it can be ground to required soil particle size amp spread uniformly in the SS pan amp put it for counting STUDENT EXPERIMENTS WITH ALPHA PROBE CONNECTED TO RADIATION COUNTING SYSTEM Experiment 1 Calculation of gross alpha efficiency of the alpha probe with a known DPS Disintegration per second of an Alpha standard source Here it is assumed that efficiency of Aloha probe is unknown Items Required UN a Radiation Counting System with AC mains cord b Alpha Probe with connecting cable c Alpha standard source known activity DPS Procedure 1 Make connections to Radiation Counting System with alpha probe E 2 Power up the Radiation Counting System unit amp increase the o Alpha probe to operating voltage 3 Fora known preset time say 5 minutes take background l 4 Now place standard Alpha source of known DPS amp coun 5 By subtracting the BG obtain net counts CPM 6 Take ratio of CPM Vs DPM to obtain efficiency of t probe with Radiation Counting System Items Required a VV a Radiation Counting System w ficient AC mains Procedure 1 Make connections to 2 Power up the Radiati 3 Fora known pres time 4 Now place unknc wn same preset time of 5 min Obtain net counts by subtracting obtained counts from BG By knowing the efficiency
17. d PCBs detectors amp other critical components which may become obsolete e Obsolescence in electrons is quite rapid If you enter into AMC guaranteed service for the period of AMC will be the responsibility of Nucleonix Systems e Nucleonix Systems will maintain Engineers at your disposal to attend to AMC calls on time e Without AMC prompt service calls are not guaranteed e If some critical components become obsolete then Nucleonix systems may request you to upgrade the product with new model or new electronics which may be expensive if you are not under AMC Training on maintenance servicing e oa limited extent we offer training on maintenance repairs at our works to customers on chargeable basis Details can be obtained from our customer support division by customers who may require such services 32
18. e detector Now allow a warm up time of 5 minutes Now acquire for background radiation by going to BG mode in ACQ mode option In this menu enter the preset time depending upon detector type and background expected Typically one can select 60 sec 300 sec for 8 detectors and 300 sec 3600 sec for a an N Now once preset time is selected press START button to acquire At the end of c STORE button to update background CPM oN Note Ensure to keep radiation sources away from unit to prevent radiatio ni standard radiation source of known activity Select STD mode of N subsequently enter preset time amp dps of std depending upon activity of t e standard Now acquire for the standard for the selected preset time At the end of preset time store the obtained efficiency data by pressing STORE button aN Efficiency n Counts from STD Preset time of std Once the instrument is METTE mim an be analyzed amp their activities per unit volume could be estimated Select le amp itera moc Y ACQ mode option Now enter T like preset Activity of sample X in Bq unit volum e e Sample Preset time 60 Sample Counts BG CPM x il 1 X Volume in ml or m Field samples for study of gross Beta or gross Alpha activity Sample for study may involve a environmental samples soil water waste water or b Filter paper wipe sample taken from a radiological facility work areas of a Nuclear medici
19. e part module or sub system by interacting with the customer if required Skype will be used for communication e During warranty free replacement of sub system or board PCB will be done However customer has to send defective sub system back to Nucleonix system with in 15 days on arranging replacement e During amp after warranty any Freight charges amp customs clearance charges are to be borne by customers both ways e fitis a manufacturing defect then Nucleonix system will bear the replacement cost of sub system unit However any Freight charges amp customs clearance charges in their country are to be borne by customer e After warranty services will be similar to that of services during warranty However customer will have to pay for cost of parts replaced freight charges both ways amp customs clearance 30 7 4 7 5 charges in both the countries Nucleonix systems plans to introduce audio visuals on web or on CDs to facilitate product demonstration installation amp minor maintenance very soon HOW TO AVAIL CALIBRATION SERVICES FOR INDIAN CUSTOMERS Nucleonix Systems offers radiation calibration services to its customers Calibration services are provided for Nucleonix Systems manufactured products only in general as a company policy How to avail calibration services It is best advised that each of the Radiation monitors including Area monitors are calibrated once in a year When you want to send your Radia
20. f these events after amplification in the RCS will be counted The required high voltage is applied which is typica y d 900V through RCS to the Alpha Probe N Probe has a drawer assembly which facilitates sample placement on aa tray for counting applications The counting samples are usually deposhag on planchets of 25mm diameter or filter paper upto 38mm diameter SPECIFICATIONS Detector material Zns Ag Screen covered Ven Aluminized E foil Density 10mg cm2 j Efficiency Better than 2596 for U 238 alpha or Ah 241 Background counts 5to6countsinonehour Photomultiplier tube PMT of ETL or Hamamatsu make or its equivalent Size 50 8 dia 2 Operating Voltage Range 700 to 950V Drawer Assembly Holds both 25mm dia SS Spence or 50mm dia filter paper ALPHA STANDARD SOURCE Am 41 alpha standard source can be supplied as an optional item This is an electro deposited source on an SS planchet Typical activity is in the range of 3000 to 5000 dpm B BETA PROBE ASSEMBLY gt NX TYPE LS240 This is essentially an integration of the following units i Lead Castle LS 240 ii G M Stand SG 200 iii G M Detector GM 120 or iv G M Detector GM 125 or v Plastic Scintillation Detector SBP2 The Lead Castle Type LS 240 is designed to shield the G M Counters from background radiation Lead Castle type LS 240 can house G M counters mounted on Geiger tube stand of NUCLEONIX make The shield is of 45 mm
21. g Syston with Be 2 Power up the Radiation Counting System ugs i S 3 4 D o 2 CHAPTER VII CALCULATIONS FOR MINIMUM DETECTABLE ACTIVITY Minimum Detectable Activity The minimum detectable activity MDA is that amount of activity which is the same counting time gives a count which is different from the background by three times the standard deviation of the background counting rate MDA Bkg cpm 3X Bkg 7 t Example What is the MDA for a counter with a background of 750 counts in ten minutes MDA 75 cpm 3 X 750 2 10 min 83 gross cpm Thus any gross count over 83 cpm can be considered to be due to radioactivity However the MDA for a counting system must be expressed in terms of a net count so that the results can be converted to dpm or uCi Thus the MDA becomes MDA 3 X Bkg 2 t To calculate the MDA in dpm for a known nuclide divide by the efficiency of the nuclide Report the MDA for any nuclide for which a net count of zero is calculated or whenever the standard deviation of the reduced by increasing the counting time and lowering the background The lower the MDA the more accurately the activity of samples with low counting low counting rates can be determined Example what is the MDA in dpm for a counter with a background of 750 counts in ten minutes and an efficiency of 50 for the nuclide of interest MDA 3 X 7501 2 10 min 8 net cpm o cpm Q sc d 1 Bq 2 7 X 10 11 Ci 16 dpm 0 266 dp
22. he equipment straight away if it is within 5 yrs old If the irs how only after you equipment is beyond 5 yrs old then also you can send it for repai receive confirmation from Customer Support Division that it is re ble amp s not an obsolete model If the design is obsolete then customer support division ay give you buy back offer to replace with new model or upgrade it with electronic rcuit boar e For all installed equipments costing above Rs 6 0 lakhs which are e larger in size amp for which field servicing only is recommended you can obtain a quok XQ with relevant details by sending an e mail amp avail the services accordingly depending upon sophistication e Also in some cases it may not be possible e For all jobs to be serviced in the fi nature of problems to enable out RS SER ICING POLICY FOR EXPORTS tured amp exported are subjected to a well defined quality assurance QA plan FAT Nucleonix systems has the following policy to provide ninor Boone which can be handled by customers servicing tips have been provided in the user manual servicing manual e Also most of the equipments have built in fault diagnostic features which will indicate to the user nature of problem in the equipment Based on the visual indication in the instrument Display user can take corrective action or contact Nucleonix systems by email for help e Nucleonix systems will guide in localizing the defectiv
23. ne centre Or Reactor building or Radiochemical plant etc or c Air activity deposited on a filter paper taken from a continuous air monitor in a Nuclear facility Radiochemical plant waste immobilization plant Efficiency of the detector probe Alpha probe When Nucleonix systems supplies Alpha probe along with RCS for alpha sample counting application they specify typically efficiency for the Alpha probe with a particular Alpha standard source Taking that efficiency as the standard one can do sample counting amp from the counts obtained interpret calculate the activity of the sample under study Efficiency of the detector probe Beta probe When Nucleonix systems supplies Beta probe End window GM tube based Beta probe plastic scintillator beta probe along with RCS for alpha sample counting application they specify typically efficiency for the Beta probe with a particular Beta standard source Taking that efficiency as the standard one can do sample counting amp from the counts obtained interpret calculate the activity of the sample under study 25 IV Sample preparation both for alpha amp beta a Usually samples are to be preferred in advance before they are loaded into the sample holder or sample tray for counting b If it is a water or waste water sample approximately litre of it can be taken evaporated to obtain it in the form of precipitate which can be deposited on a SS pan amp put it in sample tray for
24. on the next page This is an advanced Radiation counting system RC605A Integral table top model designed around microcontroller chip 89C51 and can be used with a choice of alpha beta gamma detector probes This unit has a High Voltage PCB Microcontroller PCB Power supply pulse processing circuits and 20X2 LCD dot matrix display and a front panel tactile keypad High Voltage circuit block HV circuit PCB consists of DC to DC converter with external drive oscillator This typically operates in the frequency range of 25 KHz to 35 KHz A 555 oscillator is used R F transformer steps up the voltage A voltage doubler filter regulator etc will give highly stable variable HV i 1mA 0 5mA There is a 12 bit DAC which is programmed through microcontrolle output goes to HV circuit Display for HV is achieved through a 10 bit ADC chip which logs fraction o nd through microcontroller it goes to LCD display under software control and HV is indicated counter and it displays on the 20 X 2 LCD module Once the preset time is completed microcontroller reads the data from counter and is presented to the display Keypad has command buttons for user interface with instrument for programming and operation of the product under program control Unit has EEPROM for data storage and recall on to display when needed There is a built in printer port to facilitate printing of raw data as well as processed results which may include user s
25. or V Abuttons Once all the above settings are set user can begin actual acquisition The user can select appropriate paralysis time by using A or WV keys It can be set to OFF 250jsec 550j sec 5 2 2 TO ENTER BG MODE Press PROG to select below menu option OL B ACQ MODE XXXXX LIE LIE Now by pressing PROG button an be chosen 5 2 2 1 TIME OF ACQ OF LAST BG The last acquired time amp date of BG data can be vi by selecting below menu option by pressing PROG key L IL IL B DATE BG XX XX XXXX 7 2 2 2 TO SET PRESET TIME The last acquired tim PROG key The time for OW G can be set by selecting below menu option by pressing PROG key dE b PR TIME Now using A or Wl buttons the preset time can be set as per the NH A requirement 5 2 2 3 TO ACQUIRE FOR BG Select the below menu option by pressing PROG button OL B G data can be viewed by selecting below menu option by pressing TO ACQ PRESS START KEY BG NN ULI Now press START key for acquiring BG for the selected preset time 21 5 2 3 TO ACQUIRE STD MODE Select the below menu option by pressing PROG button C C E ACQ MODE XXXXXX B i Now using A or Wbuttons select STD mode If any other mode a M is displayed LM Now by pressing PROG button different sub menu options under ACQ mode can be chosen 5 2 3 1 TIME OF ACQ OF LAST STD The last acquired time
26. ors are EURO type e Counts capacity 999999 preset time 9999 sec e Variable HV 0 1500V 0 5mA e Store and Recall facility for data counts e Built in parallel port for direct data printing e Builtin Ethernet connection to PC e Programmability for lable assignment for a sample e Facilitates connection to Alpha amp Beta and gamma probes for sample counting e Builtin RTC Fig 1 RADIATION COUNTING SYSTEM AT TYPE RC605A m with Beta probe with Gamma probe CHAPTER II TECHNICAL SPECIFICATIONS P M Input From p y scintillation detector probe a Polarity Negative b Amplitude 100 mV min G M Input From G M Counter a Polarity Negative b Amplitude 500 mV min c Built in load resistor 4 7 or 3 3M Ohms HV Output HV 0 1500V 1mA continuously variable through front panel ee in steps of 1 volt ripple less than 20mV line amp load regulation better than 0 05 HV indication On LCD dot matrix provided Display 20 x 2 LCD dot matrix display has been provided to indicate data caet Elapsed Time and HV Counts Capacity 999999 counts l Preset time 1min to 24 hrs HH MM format Overflow gt 999999 Counts CPM gt 099999 CPS Measuring range 999999 Counts Storage capacity 1000 readings Data storage Configuration parameters Sample particulars amp data values Count ON indication Red LED Y Modes of operation Preset time mode P
27. oss during transportation both ways 6 Immediately on receipt of the equipment we will send an acknowledgement amp also a proforma bill by email post 7 Based on the proforma bill once we receive the payment equipment will be dispatched back by similar mode of transportation as mentioned above HOW TO AVAIL CALIBRATION SERVICES FOR FOREIGN CUSTOMERS Foreign customers can calibrate Nucleonix make Radiation monitors equipments in their country at any of their accredited Radiation calibration labs Nucleonix systems will be happy to provide any help and guidance if needed for calibration Alternatively if you send the equipment here to India we can also provide calibration services Calibration Standards Lab amp Facility We have two calibration labs i Low Level Calibration Lab li High Dose Rate Calibration lab Low Level Calibration Lab This has a Cs 137 165 mci standard Gamma Survey Instruments Calibrator from Amersham This calibration service has NIST Traceability standard Calibration of all portable radiation monitors survey meters contamination monitors Area monitors etc is carried out in this lab upto 1 R hr max dose rates 7 9 Gamma Survey instruments calibrator has Cs 137 source 161 5 mCi as on 05 Aug 2002 It is basically a gamma survey instruments calibrator procured from AEA Technologies UK USA Has NIST traceability accuracy within _ 7 High Dose Rate Calibration Lab This lab has a 8 Ci
28. pecific calculations There is a buffered opto isolated RS232 485 interface chip connected to microcontroller RS232 485 signals are terminated on a 9 pin D connector on the rear panel Unit can be connected PC through this connector for data communication amp programming Net Count software is exclusively designed by Nucleonix Systems for Networking of multiple counting systems to PC 16 CHAPTER V OPERATING INSTRUCTIONS 5 1 SYSTEM INTERCONNECTIONS Remarks mo From cable to be used di 230 V A C Mains Mains Socket on to power ON the Mains cord Socket Rear Panel unit Beta Probe UHF Socket Beta Probe unit UHF to UHF RG59 cable For Beta Probe on Rear Panel of GM stand of 1 meter length i Personal computer RS485 9 pin serial D connector on RS485 serial cable ae Rear Panel of RC605 pone 25 pin D to Printer Connecior on D connector for data printin Rear Panel of RC605 9 p 5 printer cable i DAT UHF to UHF RG59 cable 0 probe Alpha probe unit ufusfo eter length For Alpha probe on R P of RC605 ug for serial 01 02 03 04 Printer Optional 5 5 2 INSTRUCTIONS ON INTELLIGENT KEYPAD COMMANDS When we switch on the unit the display will show up as below RC605A SLNo XX for 3 Sec NUCLEONIX SYSTEMS for 3 Sec Now display appears as shown ACQ MODE SETUP Now user has to initially configure the instrument by selecting SETUP mode amp set various parameters 5 2 1 TO ENTER SETUP M
29. reset Count CPS and CPM Preset cycles Itekations 1 to 10 Command Buttons START STOP PROG STORE INC amp DEC command buttons have been provided on the front panel key pad Paralysis Time A choice of three paralysis times 250 350 and 550 micro sec plus OFF position selected through PROG key Programmability Includes selection of Preset Time Storing Recalling of data starting and stopping of acquisition label assignment for data counts BG Background ST Standard amp SP sample etc RTC Built in RTC provides real time clock information which is stamped in the activity report when printed Built in Real time clock facilitates the user to generate sample analysis reports with RTC stamping Both date month amp time in hrs and minutes are printed Scintillation detector probe socket This is a UHF socket for connecting to or Bl scintillation Probe G M Socket MHV connector for connecting to G M Detector s Printer Port Built in centronics port facilitates connection to a printer for direct data printing selectively Ethernet Port Bulit in Ethernet PCB facilitates data downloading into PC through Ethernet cable Data Communication Software Can be provided for serial transfer of data readings into PC Power This unit RC605 is powered through AC to DC 12V 20 5A adaptor at jack Operating Temperature 0 to 509C Relative Humidity Upto 9096 Type test compliances e Manufactured confirming to ANSI
30. s 0 266 Bq 0 266 X 2 7 X 10 11 Ci 0 7199 X 10 1Ci 7 199 X 10 12 Ci 7 2 X 10 uCi 16dpm or 7 2 X 10 6 uCi 28 7 1 7 2 a CHAPTER VIII AVAILING OF EQUIPMENT MAINTENANCE CALIBRATION SERVICES AND WARRANTY CLAUSE GENERAL As per the warranty clause of the company we provide one year warranty during which period we provide free service at our works Hence in case of any mal function in our instruments you are requested to send the unit back to our works by RPP COURIER SPEED POST PARCEL GATI XPS door delivery We shall arrange immediate rectification replacement within two weeks from the date of receipt of the equipment at our place Please note that the equipment will be serviced at our works only The equipment is to be sent to The Servicing Department NUCLEONIX SYSTEMS PRIVATE LIMITED Plot No 162 A amp B PHASE Il I D A Cherlapally Hyderabad 500 051Ph 040 27263701 329145448 32918055 E mail info nucleonix com www nucleonix com For all the Radiation monitoring equipment detectors built in or exte R supply i or Since detectors will may have o glass construction we do not PRIN A In case of failure of these Note n respect of all types of portable radia S M ors it may be necessary to checkup and recalibrate the equipment once a year at our works e For all equipm eni y f os D N when the equa D Lae i networked syst S specialized systems costing more
31. t type Input range Display range alarm settings alarm data current reading etc to the Host PC on demand The firmware is able to receive commands from Host PC and carry out the settings of different parameters like Instrument ID Instrument type Input range Display range alarm settings etc Detailed list of the command and response for the Host slave communication is provided to the user Environment S The instrument is able to withstand temperature upto 50 deg C and relative humidity upto 90 in radiation areas Mechanical Dimensions 250mm W X135mm H X325mm D Approx APPLICATIONS This system can be used for counting a B or y samples on a 25mm dia planchet or 47 50mm dia filter paper N facility System can also be used for wipe DETECTOR PROBE ACCESSORIES OFFERED WITH RADIATION COUNTING SYSTEM RC605A A ALPHA PROBE TYPE AP 165 Alpha Probe type AP165 manufactured by NUCLEONIX is meant to be used along with Radiation Counting System model RC 605A for counting alpha samples Radiation Counting System along with Alpha Probe essentially works as an Alpha Counting System Alpha Probe of NUCLEONIX make is essentially an integration of ZnS Ag scintillator screen optically coupled to a 2 PMT amp covered by a pin hole free aluminized mylar foil to provide sealing against ambient light Scintillations received by PMT because of Alpha particles will be converted to electrical charge and inturn to voltage pulses Each o
32. th stand amp other accessories including cables c Lead shielding castle for the detector probe KV All these items on receiving are to be unpacked carefully amp inspected Q If any damage to the instrument is observed do not switch ON the uni report the matter immediately to Head CSD Cust M Division Goo stems Private Limited lot 62 A amp B PHASE II ally Hyderabad 500 051 30918055 FAX 91 040 27262146 e mail info nucleonix net Ph 91 040 272637 In all corresponden arding the instrument please mention the type serial number of the unit date of supply etc of th CHAPTER I INTRODUCTION Radiation Counting system type RC605A manufactured by NUCLEONIX is a versatile state of art integral counting system designed around eight bit microcontroller chip for using with a variety of detector probes such as Alpha Beta Gamma Scintillator detector probe or End window G M detector probe or thin walled G M detector probe s The system is suitable for counting Alpha Beta and Gamma sample counting with appropriate detector probes Radiation Counting System essentially has a processor card and other electroni ts to generate continuously variable HV upto 1500V to be applied to scintillation detector Prol 220 202 or End window G M detector s amplify the detector output and convert them to digital puls counting and displaying the recorded counts for a preset time e All PCB Edge connect
33. thickness and is built up of six interlocking rings The top and bottom are covered by similar interlocking discs A door is fitted in the bottom ring with 150 degree opening to facilitate easy access to the sample holding tray of G M Stand The door is fitted with heavy duty hinges and the inside of the lead shield is lined with thin aluminium sheet to minimize scattering C STAND FOR G M DETECTOR TYPE SG 200 Stand for G M tube type SG 200 has been designed to hold end window G M tubes This stand can be housed inside the lead shielding if required It has both sample and absorber trays The position of these trays can be adjusted from the end window of the detector The stand made up of acrylic sheet is precisely milled for sliding in of sample and absorber trays Sample tray is made up of SS material designed to hold planchets or disc type radioactive standard source Beta or Gamma Aluminimum absorber discs can be interposed between the source and the detector for attenuating the radiation as seen by the detector This stand is an essential accessory for connecting end window G M tube to any of the G M counting systems or Radiation Counting System manufactured by NUCLEONIX D END WINDOW G M DETECTOR TYPE GM 125 GM 125 is a Halogen Quenched wide End Window GM Detector supplied by NUCLEONIX It is highly recommended for swipe sample counting of Beta samples by health Physics labs Its operating voltage is approximately 5
34. tion monitor Area monitor Contamination monitor for calibration to our works You may send the equipment for calibration by following the steps given below 1 Our standard calibration charges per equipment All types of Radiation monitors including portable survey meters contamination monitors amp Area Gamma Monitors are Rs 2500 Packing Freight charges You can email a work order accepting these charges 2 Email your work order and despatch send the equipment to our works if it is 5 years old or less including details of mode of transport sent with docket particulars 3 Also mention in your work order amp clearly indicate that you will agree to pay calibration charges amp also equipment repair charges additionally if the unit is faulty amp requires repairs before one can take it up for calibration 4 You are requested to ensure good packing to avoid any transportation damages Especially if there are external detector probes they are to be packed with sufficient soft foam to ensure no damage in transportation 5 Use only the specified following mode of transportation system for dispatching on door delivery basis XPS GATI cargo Courier RPP Speed Post parcel etc Send the equipment on freight paid basis Equipments sent by other methods such as Rail Road etc will not be collected Also you can cover for transit insurance both ways if you wish Nucleonix system is not responsible for any transportation damages or l
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