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1. This Counting System will be an essiential tool for counting Beta activity in radioactive samples in Nuclear Research Institutes Atomic Power Stations Reprocessing Plants Enrichment Plants etc Also it can be used for carryingout a number of Nuclear Physics Radiation Physics amp Radio Chemistry experiments in academic institutions Universities etc Some important features of this unit are State of art microcontroller based design 20 X 2 LCD dotmatrix display for counts elapsed time and EHT Counts capacity 999999 Preset time 9999 sec Variable EHT 0 1500V 1 mA Store and recall facility for data counts Built in parallel port for direct data printing Built in USB serial port for data transfer to PC OOOO OOOO Programmability for lable assignment for a sample 2 1 2 2 2 2 1 2 2 2 2 2 3 2 2 4 CHAPTER II FRONT PANEL amp REAR PANEL CONTROLS FRONT PANEL CONTROLS AND INDICATIONS POWER ON SWITCH This is a miniature ROCKER switch which is used to power ON the unit When the switch is put ON the mains AC power is made available to the unit through 12V adaptor EHT 0 1500V This is a knob to be rotated in the clockwise direction for increasing HV which is applied to the GM Detector Current HV value is indicated on the LCD dotmatrix display INTELLIGENT KEYPAD a PROG key button This key is an important one which facilitates the user to programme the operation ofthe instrument for di2. has built in USB serial port for downloading the data into PC 12V adaptor about 1 4A at 230V at 50 Hz 340mm W X 102mm H X 292mm D ACCESSORIES i For Beta Counting Application The following accessories will be required for using the unit purposefully for Beta Counting Application a End Window G M Detector Stand Type SG200 b End Window G M Tube Type GM 120 or GM125 c Radioactive Source Kit Type SK210 d Aluminium Absorber Set Type AA270 OPTIONAL ACCESSORIES e Lead Castle Type LS240 f External Keypad with one meter cable g Inkjet Printer Dotmatrix printer with cable h Software for PC data communications for down loading the readings into PC with connecting cable i Embeded code for Beta sample activity calculations in Bg or Bq m CHAPTER IV OPERATING INSTRUCTIONS 4 1 SYSTEM INTERCONNECTIONS G M Detector MHV Socket on Rear Panel of GC602A Connection Remarks cable to be from to used 12V adaptor 12V adaptor 12V adaptor MHV Socket on G M Stand MHV to MHV cable Personal computer serial port Printer Optional USB connector on Rear Panelof GC602A Printer Connector on Rear Panel of GC602A 4 2 INSTRUCTIONS ON INTELLIGENT KEYPAD COMMANDS When we switch on the unit the display will show up GEIGER COUNTING SYSTEM NUCLEONIX SYSTEMS 4 2 1 ACQUISTION MODE SELECTION By default display changes to szcze OO OO GE OO ACQ MODE PR TIM
3. the parameters by pressing Aor V key If these parameters are not saved system will take and work according to the previous programmed parameter Once programme parameters are saved user will find the display as SAVE PRG HV OK XXXX NUMBER OF READINGS This displays the number of Readings taken during acquistion and also displays the HV By pressing PROG key again display changes to GN O READINGS GOO XXXX LABLE ASSIGNMENT FORA DATA READING Lable assignment is required and will be quiet useful for Researchers and Health physicists who may be counting Beta Samples or research samples They will record background count a reading with standard source and followed by this number of readings with different samples So a feature for lable assignment has been added in the micro controller software BG Background ST Standard SP Sample 4 2 5 4 2 6 Before acquisition for each reading lable is to be assigned If same lable is to be continued after a particular assignment then user need not do any thing the same lable will continue till such time one changes it By pressing PROG key display changes to LABLE XX HV xx Lable can be changed by using Aor W keys options are SP Sample ST Standard BG Background OO 8 0 me CO ot ala ITERATION PROGRAMMABILITY FOR A READING Iteration programmability is another useful feature that has been provided Sometimes user may like to iterate a readin
4. to facilitate product demonstration installation amp minor maintenance very soon 14 8 4 8 5 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 Itis best advised that each of the Radiation monitors including Area monitors are calibrated once in a year When you want to send your Radiation 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 a
5. E This signifies that by default acquistion is in preset time mode Because in majority of the situations counting is done for a preset time set If you want other modes of acquistion such as CPS Counts per second or CPM Counts per minute then press Aor VY keys to select required mode or else proceed as follows If ACQ MODE is required by PR TIME then skip the above selection and proceed as given below USB serial cable 25 pin D to D connector printer cable for 3 Sec for 3 Sec This always displays the current HV We can vary the HV by using helipot knob on the front panel As you turn the knob in clockwise direction HV increases This is the HV that is applied to G M detector 4 2 2 PRESET TIME SETTING 4 2 3 4 2 4 By pressing PROG key display changes to Cursor position OO O PRESET 7 HV a OC O TIME XXXX XXXX This displays the previous preset time for counting We can change the preset time by the following way A Key can be used to increase the value at the cursor position YV Key can be used to shift the cursor position to the left By the above method set the required PRESET TIME for acquistion Now steps 4 2 3 4 2 4 amp 4 2 5 as given below can be skipped by Normal users One can keep pressing PROG key till you find SAVE PRG This signifies that the set programmed parameters and their values are to be saved for operation of the equipment User can save
6. INSTRUCTION MANUAL G M COUNTING SYSTEM G M COUNTING SYSTEM AT TYPE GC602A NUCLEONIX SYSTEMS PRIVATE LIMITED Plot No 162 A amp B PHASE II D A Cherlapally Hyderabad 500 051 Ph 91 040 27263701 32918055 32914548 FAX 27262146 e mail info nucleonix net or info nucleonix com Website www nucleonix com File Name GC602A Man Date 20 08 2013 CONTENTS Description Pg No CHAPTER I Introduction 1 1 CHAPTER II Front panel and Rear panel diagrams 2 3 CHAPTER III Specifications 4 4 CHAPTER IV Operating Instructions 4 1 System Interconnections 5 5 4 2 Instructions on Intelligent keypad commands 5 9 4 3 Operating Procedure 9 9 CHAPTER V PC Communication 10 10 CHAPTER VI Block diagram amp Description 11 11 Optional Items Accessories CHAPTER VII Lead Castle with Door For G M Detector 12 12 Type LS240 CHAPTER VIII Availing of maintenance calibration services and warranty clause with in india 13 16 CHAPTER I INTRODUCTION Geiger Counting System AT Type GC602A manufactured by NUCLEONIX SYSTEM is a versatile integral counting system designed around eight bit micro controller chip This system is highly recommended for research work apart from its usefullness in the academic fields for teaching This system along with our wide end window G M Tube Type GM 125 and Lead Castle will serve as an excellent Beta counting system useful for swipe sample counting by Health Physics Labs
7. V cable GM detector mounted in the GM stand gets connected here HV through a load circuit is applied to the detector 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 USB This is ethernet connector used for data communication with PC FRONT VIEW OF G M COUNTING SYSTEM AT TYPE GC602A REAR VIEW OF G M COUNTING SYSTEM AT TYPE GC602A G M lnput From G M Counter a Polarity b Amplitude Resolving time EHT output Display Counts capacity Preset time Data storage Command Buttons Programmability G M Socket Printing option Data Transfer Power Mechanical Dimensions CHAPTER Ill SPECIFICATIONS Negative 500 mV min 6 micro sec approx Variable EHT using ten turn pot upto a maximum of 1500 volts at 1 mA Line and load regulation better than 0 05 20 X 2 LCD dotmatrix display has been provided to indicate data counts Elapsed time and EHT 999999 counts 0 9999 seconds Upto 6665 readings START STOP PROG STORE INC 8 DEC command buttons have been provided on the front panel key board Includes selection of preset time storing recalling of data starting and stoping of acquisition lable assignment for data counts BG Background ST Standard and SM Sample etc UHF connector for connecting to G M Detector Unit has built in parallel port for data printing Unit
8. ange of 0 1500V 1mA Display for current EHT is achieved through aADC chip which logs sample of HV and through microcontroller it goes to LCD display under software control and HV is indicated The LV and input circuit PCB generates 5V 12V required for circuit functioning in this PCB Also the negative tail pulse output from th G M tube is processed by a pulse shaper circuit to give a standard TTL pulse which is sent to paralysis gating logic and to counter chip as indicated in block diagram For every second micro controller reads data from counter and it displays on the 20 X 2LCD module Once the preset time is completed microcontroller reads the data from counter and resets the counter The microcontroller stores the data in EEPROM and recalls the data whenever we select recall mode Whenever we press any key an interrupt is generated and the corre sponding action will be processed The communication between PC and the unit USB PC initiates the communication between the two fl DETECTOR HIGH VOLTAGE amp FILTER CIRCUIT INPUT CIRCUIT PARALYSIS TIME GATING 20 X2 ALPHANUMERIC SS aa MICRO CONTROLLER COUNTER 12V 5V i POWER SUPPLY KEYPAD CHAPTER VII LEAD CASTEL WITH DOOR FOR G M DETECTOR LS240 This consists of 40mm lead shielding cylindrical rings assembly with total of eight lead assembly parts There is a hinged door in the bottom ring through which sample can be loaded in to the G M stand samp
9. c 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 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 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 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 equipment cost of components packing charges Return Freight charges actual Once our customer support department responds amp requests you to despatch the equipment to our works for repairs you may do so by following the steps given below Followed by this you can send the equipment straight away if it is within 5 yrs old If the equipment is beyond 5 yrs old then also you can send it for repairs however only after you receive confirmation from Customer Support Division that it is repairable amp is not an obsolete model If t
10. etectors built in or external probes will not have one year warranty but only inspection warranty at the time of supply is provided Since detectors will may have fragile glass construction we do not provide warranty In case of failure of these components Nucleonix will supply detector replacement at cost cost price Note In respect of all types of portable radiation monitors it may be necessary to checkup and recalibrate the equipment once a year at our works EQUIPMENT REPAIRS SERVICING POLICY WITH IN INDIA During Warrantee The following procedure is to be followed by the customers with in India for availing services repairing facility during warrantee period Equipments are to be sent to our works for availing free repair services during warrantee after the customer receives approval from the customer support division by sending an e mail e For all equipments costing less than 6 0 lakhs one year warrantee amp free service is offered when the equipments are sent to our works only For larger systems such as installed systems networked systems specialized systems costing more 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 This does not include personal computer related problems for which local computer service provider of the PC vendor is to be contacted Also for software related problems online support wil
11. f 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 8 timely Nucleonix systems maintain required spares spare tested 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 O 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 To a 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 16
12. fferent modes conditions More details are covered under CHAPTER IV OPERATING INSTRUCTIONS b START key button This is used for starting of acquisition and printing once all the programme parameters have been set c STOP key button This key can be used to terminate acquisition and printing inbetween course of action In the normal course acquisition will stop automatically at the end of preset time and the data printing will stop once the end serial number setting for printing has reached d INC DEC key button These keys are used while setting the programme parameters to increment and decrement a value or to change the option selected to another value available e STORE key button This key is used for storing the readings or data values in the following way in the manual mode of storing only Atthe end of acquisition for a preset time if user presses this button data counts and with or without EHT will be stored and the SI No in the display increments to the next value In CPS CPM modes the current CPS CPM is saved on pressing this button LCD DOTMATRIX DISPLAY This is a 20 X 2 alpha numeric LCD dotmatrix and responds to all the commands from the keypad and displays programme parameters current HV data counts serial number preset and elapsed times etc REAR PANEL CONTROLS AND INDICATIONS 12V ADAPTOR SOCKET This is a low voltage socket for supply to the board G M DETECTOR This is a MHV socket through a MHV to MH
13. g 2 or 3 times The system allows this and it displays averaged reading only at the end of two or three iterations Acquistion for iterations once initiated will go till all the iterations are completed Users intervention is not required Ww lt Y D a a v J Q e A D display changes to O o O ITERATION OO O o By default 1 is displayed Number of iterations can be changed by using O o O Aor VW keys SAVING PROGRAMMED PARAMETERS All the programmed parameters are to be saved by the user before he can start acquisition Without saving the system will use the previous parameters for acquisition By pressing PROG key display changes to SAVE PRG SAVE To save the above parameters press Aor W keys OO 80 6 OO OO UO OK will be displayed on saving of parameters PRG 4 2 7 4 2 8 4 2 9 RECALL DATA READINGS This is a very useful feature that has been provided in this unit At the end of storing saving of a set of readings this feature will enable the users to recall the readings on to the display from the SI No set in the RECALL mode By pressing PROG key display changes to eS RECALL e O C XXXX SI No No of counts OBU OBO Recall serial number can be changed by Aor V keys ERASING MEMORY This option facilitates the user to Erase the memory completely By pressing PROG key display changes to a O ERASE MEMORY ASK O a O By pressing A
14. he design is obsolete then customer support division CSD may give you buy back offer to replace with new model or upgrade it with electronic circuit boards amp enclosure For all installed equipments costing above Rs 6 0 lakhs which are larger in size amp for which field servicing only is recommended you can obtain a quotation with relevant details by sending an e mail amp avail the services accordingly For all field servicing jobs since we need to depute engineers it is likely to take time amp also it will cost more which includes Engineer s TA amp DA etc apart from basic service charges cost of spares etc Please note that basic service charges will be different for different products depending upon sophistication Also in some cases it may not be possible to fix up the problems in the field itself in such cases we may advise you to send them to our works For all jobs to be serviced in the field customer is requested to provide adequate details on the nature of problems to enable our engineer to come prepared with adequate spares For any additional information send an e mail to info nucleonix com Atten Customer support division EQUIPMENT REPAIRS SERVICING POLICY FOR EXPORTS Equipments manufactured amp exported are subjected to a well defined quality assurance QA plan amp Factory acceptance tests FAT Nucleonix systems has the following policy to provide maintenance support to overseas customers either di
15. l be provided Software support doesn t include cleaning of virus problems etc 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 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 O All the equipments are to be sent to our works only on door delivery basis e 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 O 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 COURIER RPP 13 b 8 3 a 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 et
16. le tray A 1mm aluminum lining is provided on the inside surface of the lead shielding When it is dispatched from here usually it is packed in about four wooden boxes So on unpacking there parts could be assembled as shown in the enclosed drawing LEAD CASTEL WITH DOOR FOR G M DETECTOR WITH STAND TYPE ASSEMBLED VIEW There is a small cutout on the top ring to take the cable connection between G M Stand to rear panel of the unit GC 601 602 or RC605 The top ring has a handle for lifting and this closes the lead castle from top side 12 8 1 8 2 a CHAPTER VIII AVAILING OF MAINTENANCE CALIBRATION SERVICES AND WARRANTY CLAUSE with in India GENERAL As perthe warranty clause ofthe 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 II D A Cherlapally Hyderabad 500 051Ph 040 27263701 329145448 32918055 E mail info nucleonix com www nucleonix com For all the Radiation monitoring equipment d
17. or Wkeys we can Earase the Memory OBO FORPRINTING DATA By pressing PROG key display changes to PRINT DATA Now connect the Printer and Press START to print the data 00 18 0 OOOO 08 OO 4 2 10 FOR STORING DATA AUTO OR MANUAL This option facilitates the user to store the Data automactic or manual By pressing PROG key display cahnges to STORE DATA AUTO By pressing Aor V keys we can change to AUTO or MANUAL mode OUI 886 U OOJOO 4 2 11 FOR STORING DATA WITHOUT HV OR WITH HV This option facilitates the user to store the Data with HV or without HV By pressing PROG key display cahnges to Siete ASK 08O O 0 STORE DATA WITHOUT HV By pressing Aor V keys we can Store Data with HV or without HV 4 2 12 PARALYSIS TIME 4 3 A By pressing PROG key display cahnges to PA TIME OFF By default PA Time is OFF We can set PA time to 250 psec or 350 usec or 550 usec by pressing Aor V keys OO 0 86 OO OO O0O OPERATING PROCEDURE FOR BETA COUNTING APPLICATION After making the interconnections as detailed under 4 1 the unit can be switched ON Before switching ON please ensure that the GM Detector is mounted inside the G M Stand and interconnections are made between the detector and crocodile clips with proper polarity Wrong connections will damage the G M tube permanently Also ensure before switching ON that EHT knob is in anti clockwise posi
18. rator 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 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 15 8 5 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 R 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 O Name year amp data of purchase SI Nos of equipments Model No s No o
19. re 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 loss during transportation both ways 6 Immediately on receipt of the equipment we will send an acknowledgement amp also a proforma bill by email post fa 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 ii High Dose Rate Calibration lab Low Level Calibration Lab This has a Cs 137 165 mci standard Gamma Survey Instruments Calib
20. rectly or through international dealers distributors During amp after warranty For minor problems which can be handled by customers servicing tips have been provided in the user manual servicing manual 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 Nucleonix systems will guide in localizing the defective part module or sub system by interacting with the customer if required Skype will be used for communication 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 During amp after warranty any Freight charges amp customs clearance charges are to be borne by customers both ways If it is 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 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 charges in both the countries Nucleonix systems plans to introduce audio visuals on web or on CDs
21. tion completely so that HV applied is almost zero volts Now user can place a radioactive source in the source tray and increase the HV after switching ON the unit User can notice that HV value will be displayed on the dot matrix display Now it may be better to go through the instructions given in 4 2 Instructions on intelligent keypad commands Having practiced the commands on keypad user can carryout the sample counting etc User can set the HV bias to operating voltage of the detector and use it for sample counting CHAPTER V PC COMMUNICATION optional Serial Data Communication software for downloading data from GM Counting System to PC can be provided seperately at extra cost Necessary instructions for using this software are been provided in the file in floppy 10 CHAPTER V1 BLOCK DIAGRAM 8 DESCRIPTION While going through these following lines please refer to the enclosed block diagram This is an advanced Nuclear counting system Integral designed around microcontroller chip AT89852 This unit has a High Voltage PCB Microcontroller PCB LV Power supply and GM pulse shaper circuit PCB and 20 X 2 LCD dotmatrix display HV circuit consists of DC to DC converter with external drive oscillator This typically operates in the frequency range of 25 KHz to 35 KHz A555 oscillator is used R F transformer steps up the voltage A voltage doubler filter regulator etc will give highly stable EHT variable in the r
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