product manual
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1. In display lastly selected channel along with unit selected displayed showing zero counts B Low voltage supplies failure condition For 24V amp 12V When 24V or 12V fail display shows failure condition as given below ALPHA MW XXXXXXCPS Blinking Both EHT failure 8 low voltage supply failure condition are sensed by recoding fraction of the voltage through ADC into microcontroller to indicate the above display status in the custom LCD display 23 C Detector failure condition D FL When the detector signal is not received for about 10 minutes this condition arises amp the custom LCD will show up as given below XXXXXXCPS Blinking When the Contamination Monitor CM712 unit is in operation with any of the detector probes it is pressured that atleast once in 10 minutes there will one radiation event that gets detected amp counts If there is no event received within 10 minutes then the microcontroller senses this failure to show up the above d FL display indication This also happens if no detector probe is connected amp operating voltage to the detector is not set to the desired value 24 6 1 6 2 AV AILING 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 instru2. AUTO ACK OFF ON 5 min Use A or keys to select the required mode When AUTO ACK mode is ON then the audio will get muted within 5 min of generation of alarm condition D jel Hk The next menu option is MAX SCALE which is prompted on pressing PROG button 18 5 1 10 CURRENT LOOP MAPPING A MAX SCALE Depending on the unit chosen i e CPS or CPM or Bq the maximum permissible scales are 2 000 50 000 and 50 000 respectively User can choose any value upto a max of this upper limit amp a value above the minimum value Any value chosen out of these boundaries will be ignored at the time of saving settings and default values will be loaded In the display chosen unit will appear amp appropriate max value desired can be entered by the user Similar is the case for other units such as CPS or After selection of max scale user can now select PROG button to go to next menu option as follows Default setting is 10 000CPM MAX CPM 4 20 view and modify the CURRENT LOOP MAPPING SCALE using PROG keys select below screen Li MAX CPM LAgh4 4 20mA Use A amp keys to enter the MAX count rate activity which corresponds 20 current ES M B MIN SCALE Depending on the scale selected initially appropriate unit i e typical CPM appears in the display User cannot enter the min scale value which is equal or
3. Pan Cake detectors Probe size 6 5 X 11 5 cm Active area 75 sq cm approx Gamma Sensitivity C S mR hr Co60 60 per detector Dimensions Detector Length 4 72 Inches Effective Depth 0 90 Inches Maximum Dia 1 96 Inches Application This is offered both for Beta Gamma Contamination Monitors g Alpha Contamination Probe ACP1 Alpha Contamination Probe type ACP1 of Nucleonix make serves as a large area Approx 100 sq cm alpha contamination probe It is designed to work with Nucleonix make contamination monitor CM712 or its equivalent Alpha Scintillator ZnS Ag Scintillation film covered with aluminized myler foil for light tightness is used as the detector PMT 2 PMT of EMI make 9266B Viewing area 100 sq cm Approx A ZnS Scintillator screen of 10x100mm will be used with a conical light guide for 2 PMT Operating Volage Range 950V to 1050V Efficiency Better than 25 Cable length One Meter by default PCP 1 PCP 2 ACP 1 Mobile Stand MS 1 Mobile stand with a base plate fitted with lockable caster wheels amp SS cylindrical column to support the top base plate amp the instrument has been designed amp made available as an accessory to the bench model contamination monitor Top base plate onto which instrument is mounted can be tilted slightly so that viewing angular face of the instrument is convenient to the user This top base plate can accommodate c
4. above the max scale value selected Any value not meeting boundary conditions will be ignored while saving the settings amp default value will be loaded Similar if the engineering unit changed then the min amp max scales are tabulated as follows MIN CPM 4 20mA 19 Engineering Unit Max scale 4 20mA Min scale 4 20mA CPS 2000 0000 CPM 50000 00000 Bq 50000 00000 To view and modify the CURRENT LOOP MAPPING MIN SCALE using PROG P keys select below screen MIN CPM lt ld MI 4 20mA Use A amp keys to enter the MIN count rate activity which KI gt corresponds to 4mA current Followed by this on pressing PROG button the following menu appears load default settings Note Max amp Min scales are primarily for current loop scaling for control room operation Also in the visual LED display also the same scales are set Any value exceeding this max scale will show as over range as per definition in the LED display However in the lower LCD display it continues to show dose rate as per actual value Default setting for Min Scale is 00000CPM 5 1 11 LOAD DEFAULT SETTINGS In case the user wants to retain default settings he can skip all the previous menus amp select this menu amp chose option by pressing A or Wkey for default settings To load FACTORY DEFAULT SETTINGS using PROG 4 amp PROG P Keys select below screen 20 LOAD DEFA
5. this facility before they are shipped dispatched re 4 XE 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 proposal e Name year amp data of purchase SI 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 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 tim
6. we can select Reset mode as AUTO MANU to reset alarms automatically or manually on user prompt after alarm levels fall below preset levels Once RESET MODE option is selected user can now press PROG button to go to next menu option i e Audio Status AUDIO STATUS AUDIO ON STATUS LI Audio STATUS is by default ON BAUD RATE Baud rate is to be selected for data communication in a networked environment for RS485 communication There are two options as indicated in LCD display BAUD RATE 9600 19200 One can select any of the two options for baud rate by using by A or keys Having done that user can go to next option by pressing PROG key The next option that appears in LCD display is hardware check Default setting is 9600 16 51 5 HARDWARE CHECK To perform hardware check using PROG or PROG keys select below screen 4 Ly il atv Conditions Message on 7 segment Display HV is faulty HW CHK OK Now press or buttons to perform self check Based on the various possible failure conditions appropriate messages are displayed as shown below 12V or 24V is faulty LS FL Zero counts for more than 10 min 5 1 6 DETECTOR EFFICIENCY To view and the set Detector Efficiency using PROG amp PROG P keys select below screen DETECTOR EFF Now press A amp buttons to adjust the detector efficiency This is required to display the measured value in terms of
7. weight amp elegant Choice of Beta Alpha contamination probes Counting accuracy 15 with contamination probes Alpha Beta contamination in CPS CPM with auto ranging Time Constants LO MED HI Modes CPS CPM Preset Scalar Built in serial port amp parallel port 2 1 2 2 2 3 2 4 2 5 2 6 CHAPTER Il TECHNICAL SPECIFICATIONS Detector assembly The instrument can be supplied with three detector probes two detectors for Beta gamma and one for alpha with the specifications given below Beta gamma detector Side window probe with Halogen quenched GM detector thin walled 25 30 mg sq cm in a protective housing with a rotatable shutter for cutting off beta particles This will be used for measuring beta as well as gamma contamination End window probe consisting of an End window Halogen quenched GM detector 30 mm dia 3 4 mg cm 2 thickness mica window housed in a suitable protective cover with handle The end window is provided with a removable cover e Detection Efficiency Greater than 2 2 5 for side shutter type probe amp Greater than 15 for End window type for Sr 90 Beta particles e Probe Construction Hand held type viewing side is provided with a removable cover Alpha Detector ZnS Ag scintillator approximately 20 mg cm 2 on perspex covered by 1 mg cm 2 aluminised pin hole free light resistant mylar film protected by a suitable thin metallic grill The scintillato
8. D PROG key button This key is an important one which facilities the user to program the operation of the instrument for different modes conditions There are two PROG keys i e left 8 right arrow keys These are useful to navigate while going through various program functions forward amp backward More details are covered under CHAPTER IV OPERATING INSTRUCTIONS START key button This is used for starting of acquisition and printing once all the program parameters have been set STOP key button This key can be used to terminate acquisition and printing in between 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 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 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 At the end of acquisition for a preset time if user presses this button data counts 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 c
9. INSTRUCTION MANUAL CONTAMINATION MONITOR FRISKER TYPE CM712 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 CM712 Man Date 20 03 2012 CONTENTS CHAPTER No Title of the contents Page No Unpacking CHAPTER I Introduction 01 01 CHAPTER II Technical Specifications 02 07 CHAPTER Ill Front panel and Side panel controls indications 08 10 CHAPTER IV Block diagram Description 11 13 CHAPTER V Operating Instructions 14 24 CHAPTER VI Availing services for Equipment Maintenance calibration and warranty clause 25 28 Contamination Monitor Frisker Type CM712 has been thoroughly tested and is dispatched in ready to assemble and use condition with required contamination probe s This can be used as a table top mounted unit or mounted on a mobile stand with castor wheels 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 cartons contain a CM712 Electronic main unit with mains cord b Contamination
10. 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 2 6 5 Gamma Survey instruments calibrator has Cs 137 source 161 5 mCi as on 05 Aug 2002 lt is basically a gamma survey instruments calibrator procured from AEA Technologies UK USA Has NIST traceability accuracy within 4 7 High Dose Rate Calibration Lab This lab has a 8 Ci 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
11. ULT OK E SETTINGS Use Aor key to load the default factory settings OK message is displayed once the settings are updated B5 e E 5 1 12 COUNTING CHANNEL SELECTION Each Electronic module can be operated as an Alpha counting module or Beta counting module For this the EHT has to be adjusted as 500V for Beta and 900V for Alpha and the corresponding detector is to be connected To select the corresponding channel adjusted using PROG 48 PROG keys select below screen COUNTING ALPHA BETA TEST CHANNEL Use A or V keys select the desired channel as ALPHA BETA or TEST mode In TEST mode internal pulses are generated which are fed to the pulse processing electronics This is independent of the Detector connected E je E HK 5 1 13 To view the set for the corresponding detector channel using PROG amp PROG keys select below screen lt Bel TES The currently set EHT to the corresponding detector is displayed on the LCD display Normally for ALPHA we set 900v and for BETA we set 500v EHT XXXX 5 1 14 MODIFY PASSWORD MODIFY PASSWORD YES NO If user wants to change the pass word he can do so by A or Wkey Select no option to retain same password Having done that finally we have completed all the PROG button functions amp are ready to save settings The next menu that appear as given below 5 1 15 SAVE SETTINGS Use A or keys to save all the above sett
12. activity Bq By default it is set to 00 096 default Having set this amp upon pressing PROG key the next menu option that appears is SET UNIT id ri BI lt 5 1 7 SET UNIT setting of engineering unit Here there are Three Units options that appear in the LCD display The measuring units are CPS CPM and Ba To view and modify the SET UNIT using PROG keys select below screen SET UNIT CPS CPM Bq RI lt M 17 Now using A or buttons modify the SET UNIT to either CPS CPM or Bq as needed gt II RI v 51 8 DEVICE ADDRESS This is a three character numerical value This is RS485 address of the instrument limits 0 255 Default settings is 000 To view and modify the DEVICE ADDRESS using PROG P keys select below screen DEVICE ADDRESS Lal ki E Use A or keys to select the device unit no Default address is 000 This is used when multiple units are networked U User can select desired three digit address ID of the instrument Use 4 or Wkevs to load this value Having completed this task press PROG button for the next menu i e AUTO ACK 5 1 9 AUTO ACKNOWLEDGE By A or Wone can select or toggle this option If it is selected as ON after 5 minutes automatically alarm is acknowledged amp audio alarm goes MUTE However visual alarm remains active Default setting is OFF To view and modify the AUTO ACK status using PROG keys select below screen
13. 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 e 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 will 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 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 8 serial number e 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 a reliable courier service to pick the consignment from your pla
14. area window display and loud audio alarm Distinctive EHT Detector failure alarm Large Area instrument indication Provision for display of alarm set point on demand through keypad Alarm set point is adjustable continuously by the front panel keypad hand held configurator or from Remote PC with password protection Alarm annunciation scheme The audio and visual alarm will go off automatically when the reading falls below the alarm set point Housing All the electronic sub systems are housed in a single enclosure All the controls and display are on the front panel The cabinet is Vapour tight rugged amp elegant 3 2 11 2 12 2 13 2 14 2 15 2 16 2 17 Remote External Console e 4 20mA full scale output Output circuitry shall be able to drive 200 mtrs of twisted pair of wires e Two sets of potential free contacts of Alarm relay Change over Contact rating 3 Amps at 250 VAC e 9pin D connector for RS485 communication e All these signals are terminated a suitable connector Allied Connectors The corresponding unwired mating plug will be supplied with the monitor RS 485 Specification Type Isolated Multi drop serial communication port half duplex bi directional communication Address User configurable from 0 to 255 Protocol MODBUS RTU Bit Rate user 19200 Connector 9 Pin D Type Connector Self Diagnostics The monitor has built in self diagnostics On being powered
15. ce 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 COURIER RPP 25 b 6 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 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 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 oend 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
16. e 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 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 28
17. e on the analog bar scale Additionally fault diagnostic failure indication is also shown on this custom LCD Details are explained under Operating instructions Audio visual alarm status indicators These are NORMAL ACTIVE amp Buzzer are interface through microcontroller control ports amp drivers Under program control alarm annunciation takes place as per the set conditions DAC Current loop output circuit A programmable serial DAC interfaced to microcontroller provides analog signal output proportional to the digital value of the selected range This output is converted to current output 4 20mA by a single chip amp RESET commands These keys are directly connected to the microcontroller 12 FIG BLOCK DIAGRAM OF CONTAMINATION MONITOR FABS How PC 16x2 LCO 44 ola 4 20mA coupler Custom LCO Gom LCD ideato Audio Visual Alarm Status Indicator Relay dirve okt MCU P89V51 RD2 Remote Alarm ACK amp RESET Scintillator Zn plastic 5 1 CHAPTER V OPERATING INSTRUCTIONS CONFIGURATION AND OPERATION OF THE INSTRUMENT INTRODUCTION This chapter illustrates details on configuring and operating the instrument for a desired installation in a plant environment Basically operating instructions are illustrated with the help of menu options responses that appear on 16x2 LCD Analog LCD displays Each of the menus facilitate the user to choose f
18. ely in the range of 1 sec to 10 sec Display 16x2 LCD display is provided for display of countrate and for textual message indication The instrument also displays the reading in a calibrated LCD Bar graph display with the shape of an analog meter scale Audio indication Chirping audio is provided to indicate the contamination of the object being monitored The audio will be one chirp per pulse Overflow 50000 CPM Over load 99999 CPM Accuracy 5 Full scale Calibration Accuracy 5 Over the full range Calibration Stability Better than 5 over a period of six months Testing Facilities Provision to inject a suitable pulse generator signal for routine testing of Alpha Beta Count rate sections is provided on the rear panel Additionally a test pulse mode through software for checking count rate meter is provided Instrument Fault indication EHT failure Visual alarm with flashing red LED indication amp Eht message on LCD display Detector failure Visual alarm with flashing red LED amp d FI message on LCD display Microprocessor microcontroller failure Visual alarm with flashing green lamp Fault indications are cleared automatically if normal status is resumed Audio Visual Alarm system Alarm setting range 0 to full scale of the range selected Alarm setting accuracy amp stability Better than 4 1096 over a period of six months Alarms are indicated by Red LED large
19. end 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 directly 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 aft
20. er 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 26 6 4 6 5 charges in both the countries Nucleonix systems plans to introduce audio visuals on web 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 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 Monitor
21. ings These are permanently stored in the EEPROM will be recalled at next powering on of the instrument Having configured for required settings unit is now ready for operation once settings are saved unit automatically gets into operation mode and starts acquiring Count rates and indicates in the display visually To save confabulated parameters in EEPROM using PROG keys select below screen ka SAVE SETTINGS2 Now press Aor Wbuttons to store the data into EEPROM After data is stored appears on the screen This indicates that the data has been stored 5 1 16 ACQUISTION MODE The unit goes back to COUNT RATE measurement mode within 15 seconds of last key press The unit displays count rate of the selected detector in CPS or CPM or Bq mode depending upon the detector selected The Time constant for the system is in the range of 2 seconds to 8 seconds inversely varying with respect to the count rate Typical screen shot during acquisition mode is shown below 22 5 1 17 FAULT DIAGNOSTIC FAILURE INDICATION IN THE DISPLAY A EHT failure This EHT failure is indicated in the custom LCD as follows under following conditions 1 ON OFF switch is kept or in OFF position ii EHT output has failed completely amp there is no output or it is below specified value XXXXXXCPS Blinking In this EHT failure condition in analog display EHT is appeared along with unit previously selected
22. is calculating countrate The countrate in Alpha Beta channels are refreshed on the large LCD segment display every 4 seconds Average countrate of last 4 measurements is written to LCD 7 segment displays Now the unit can be configured through a detachable keypad Now on pressing PROG key the display shows as below ENTER A PASSWORD XXXX Now using A or keys enter password to get authorization to change program settings Alternatively enter factory default password PRESET ALARM LEVEL Contamination Monitor will show the current default alarm set value of 50 CPM If user wants he can change to another value by A keys Use PROG P key to select below screen PRESET ALARM LEVEL Now using A amp buttons set the preset level for alarms activation On pressing A digit at location of the cursor is incremented by one unit rollover E AM 15 5 1 2 5 1 3 RESET MODE RESET option user can either set it as AUTO or MANU manual In manual reset user has to press the RESET button to bring back the unit into normal mode once the dose rate falls below the alarm set point In auto mode once the dose rate falls below the alarm set point the unit automatically returns to normal mode and the alarm condition is turned off AUTO MANU option can be selected by A or keys Default setting is Manual Select below option by using PROG keys RESET MODE AUTO MANU By pressing A or keys
23. it will perform tests to ensure that all components and sub systems are functioning properly It will check for the Power supply High Voltage Supply Detector Counting and measuring circuits Alarm Systems and Display Systems The firmware will not halt monitoring data acquisition function any time The firmware is designed for high reliability and availability Test points are provided for checking the EHT voltage and jumpers are provided for connecting external input pulse signals Input Power 230VAC 10 50Hz single phase supply Power ON OFF indication is provided with Neon indicator Spike suppressor and line filter are provided Environment The instrument shall be able to withstand temperature upto 50 C and relative humidity upto 9096 in radiation areas Instrument Trolley The instrument is provided with trolley as an accessory to house all the hardware like detector probes Electronic unit etc The Instrument trolley is made of M S with castor wheels Environmental EMI RFI amp performance Compliance This instrument is designed to comply to IEC 60325 for its radiation performance environmental amp EMI RFI compliance For EMI compliance test specifications specified by IEC 61000 standards are applicable ACCESSORIES Beta Gamma Contamination Probe a G M Detector BCP1 thin walled Thin walled GM detector Type with GM 137 housed in S S envelope having handle and sliding
24. ments 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 162 A 8 B PHASE II 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 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 n 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 e 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
25. nS screen covered with aluminized mylar foil of 25mm dia will be used PMT 2 PMT of Hamamatsu or ETL or Equivalent Viewing area 20 sq cm Approx Operating Voltage Range 800V to 900V Efficiency Better than 25 Cable length One meter by default Application Recommended for use where viewing area of the order of 2 dia is adequate 1 2 v ULT n BCP 3 ACP 2 e Pan Cake Detector Probe type PCP 1 manufactured amp supplied by NUCLEONIX SYSTEMS is an ideal choice for Contamination Monitor both with bench model amp portable type of units It has a wide circular viewing area of 1 75 dia window to allow Beta Detector body is enclosed in a thin SS enclosure having a lid which is closed for gamma doserate measurements This probe measures gamma doserates upto 500m R hr amp Beta contamination both CPS amp CPM Probe has a nice handle to hold made in black nylon Detector Type Pan Cake 1 Gamma Sensitivity C S mR hr Co60 60 Dimensions Detector Length 3 0 Inches Effective Depth 0 5 Inches Maximum Dia 2 11 Inches Application This is offered both for Beta Gamma Monitors f Pan Cake Detector Probe type PCP 2 manufactured amp supplied by NUCLEONIX SYSTEMS is an ideal choice for Contamination Monitor both with bench model amp portable type of units Probe has a nice handle to hold made in black nylon Detector Type 2no s of
26. 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 the 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 s
27. ontamination probe also Mains supply board with required sockets and switches are provided on the trolley Mobile Stand Material Fabricated in SS Base Plate Size 52 cm Length x 43cm Depth 55 column a Height 101 cm b Diameter 16 cm Top plate size 43 5 L x 29 D cm Adjustable Angle 209 3 1 3 2 3 2 1 3 2 2 3 2 3 CHAPTER Ill FRONT amp REAR PANEL CONTROLS amp INDICATIONS FRONT PANEL CONTROLS AND INDICATIONS CUSTOM LCD ANALOG DISPLAY This is a visual LCD display specially designed by Nucleonix systems to have FOUR digit Digital value indication of the parameter under measurement with decimal indication option Additionally there is analog scale bar graph indication which is lit proportional to the digital value This also shows up other parameters such as measurement unit selected EHT failure indication Additionally there are two symbolic mimic icons for audio ON buzzer condition amp Head phone ON condition NORMAL LED LAMP This glows when the count rate has not exceeded preset level after last reset MAINS ON LED INDICATION This LED glows when the AC mains power is switch ON to the unit ACTIVE LED DISPLAY This a large size RED LED indication gets lit when the countrate exceeds preset level NORMAL LED INDICATOR This is a green LED indicator glows ON always in the normal condition That is when the countrate is below the preset value set for alarm condition INTELLIGENT KEYPA
28. probes ordered with connecting cables c Mobile stand with castors fixed for placing CM712 unit if ordered All these items on receiving are to be unpacked carefully amp inspected visually If any damage to the instrument is observed do not switch ON the unit and report the matter immediately to Head Customer Support Division Nucleonix Systems Private Limited Plot No 162 8 B PHASE II I D A Cherlapally Hyderabad 500 051 Ph 91 040 27263701 30918055 FAX 91 040 27262146 e mail info nucleonix net In all correspondence regarding the instrument please mention the type serial number of the unit date of supply etc of the unit CHAPTER INTRODUCTION Contamination Monitor Type CM 712 manufactured amp supplied by Nucleonix systems essentially serves as a frisker and is primarily designed to measure Alpha Beta amp Gamma contamination on work benches clothing hands etc in Radiochemical plants Nuclear Power plants and other similar installations t is designed to be table top model it can be mounted on a mobile stand with castors It operates on mains 230V 50 Hz This unit has a wide choice of contamination probes for Alpha amp Beta gamma contamination measurement FEATURES Manufactured confirming to ANSI N 42 17 to performance specifications Complies to IS 9000 part III amp V Interference test as per IEC61000 otate of art electronics uses microcontroller Compact light
29. r is optically coupled to a suitable photomultiplier tube along with an appropriate low noise pre amplifier etc e Detection Efficiency Greater than 25 at centre and uniform within 5 for plutonium alphas over complete detector area e Probe Construction Hand held type viewing side is provided with a removable cover e Sensitive Area 100 sq cm Electronic Unit The electronic Unit shall comprise of Low voltage power supplies EHT supply unit count rate meter based on Intel family microcontroller and an audio visual alarm system The unit is provided with two UHF connectors one for Alpha detector and other for Beta gamma detector along with the corresponding input circuit At a time only one detector can be used Low Voltage power supply The low voltage power supply unit will supply the DC power supplies required for the operation of the electronic module It has very good line voltage and load regulation It is fitted with Mains line filters to avoid line interferences Supply It provides voltage for the working of the GM scintillation detectors Its output is continuously variable from 300V to 1500V Output can be adjustable through front panel keypad and EHT should be displayed on the display 2 2 7 2 8 2 9 2 10 Count rate meter Ranges 0 50 0 500 0 5000 and 0 50 000 counts per minute The range selection is automatic depending upon current countrate Time Constant Varies invers
30. s 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 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 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
31. s the counts value into microcontroller amp displays on to custom LCD display amp also proportionate value on analog bar scale 11 4 8 4 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 12 bit DAC This is programmed through microcontroller to set any desired DAC value The output of DAC sets desired HV in the HV module 4 CH ADC This reads fraction of 24V 12V 8 HV into microcontroller amp reports any failure of LV or HV supplies once they fall below a preset value EEPROM There is another memory chip that is interfaced to microcontroller through I C bus This stores all program parameters amp data values 5V ISO amp GND ISO This isolated 5V amp GND are generated by a DC DC converter chip which take 5V of SMPS as the input source This opto isolated supplies are used by opto isolator chip RS485 converter receives opto isolated transmit amp receive signals This chip give data amp Data output for data communication into PC Microcontroller amp other associated peripheral chips Keypad is interfaced through I O expander to microcontroller Custom LCD display amp 16x2 LCD display Both these are interfaced to microcontroller through FC bus 16x2 LCD display facilitates selection of program parameters and loading of their values User can program amp set the values through keypad interface Custom LCD displays digit value of the countrate Bq it also show up proportional valu
32. ulse to test functionality of aloha channel counting electronics B Beta This is BNC input to inject ve tail pulse to test functionality of beta channel counting electronics 17 PIN I O CONNECTOR This MS series I O connector provides current loop output amp relay contact for external use 9 PIN D TYPE CONNECTOR PAIR This pair of connectors carry RS485 IN OUT signals FIG CONTAMINATION MONITOR FRONT VIEW FIG CONTAMINATION MONITOR REAR VIEW 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 CHAPTER IV BLOCK DIAGRAM DESCRIPTION The following paragraphs are to be read by referring to the block diagram Fig on next page Block diagram illustrates complete system realization including one G M detector probe amp a second Alpha contamination probe Of course at a time one probe only is to be activated This contamination monitor Frisker CM712 is an integral mains operated model It can be table top mounted or mobile stand mounted It is basically designed for Frisking of personnel in Radiochemical plants or waste immobilization plants or similar other facilities SMPS It draws 230V A C 50 Hz and generates 12V 9 0 5 24V 1A amp 5V 4A HV module generates 0 1500V 1 04 This current essentially takes input power from 12V amp 24V amp generates 1500V 9 1mA This circuit is primarily a DC to DC converter Primary DC power is switch at RF frequency through MOSFET differential drivers Secondar
33. unction value to be set or entered as desired for its operation at the installed location Front panel keypad is used for programming the contamination monitor for its functionality amp operation An important note to follow for the user is lt gt PROG key be used to enter to the menu A key can be used to increase the value at the cursor position toggle the option v key can be used to shift the cursor position from right to left toggle the option Once all necessary interconnections are made as per the system interconnection table the unit may be switched ON POWER ON CONDITION When instrument is switched on initially the audio visual observations noticed till the indications shown are stable is called power on condition When the power is switched on the following audio visual indications are noticed First to start with one audio beep is heard Followed by this the following visual indications will be lit Red cluster LED window will glow for a while and goes off Followed by this normal cluster LED window will be lit The status of LCD and large custom LCD display with power on condition is given in the following table As soon as the unit is switched ON the below screen appears CONTAMINATION MONITOR By default unit goes into acquisition mode and displays the following 14 XXXXXXCPS Blinking Now a blinking character A appears indicating that unit is in acquisition mode and
34. urrent HV data counts preset and elapsed times etc REAR PANEL CONTROLS AND INDICATIONS MAINS ON OFF TOGGLE SWITCH This is a DPDT toggle switch switches ON 230V A C mains power to the unit HV Preset This is a trimport adjustment to set the HV value to the desired biasing value HV socket This is an MHV socket on to which HV output is brought out service as a test point HV ON OFF toggle switch This is a DPDT toggle switch to power up HV circuit for its functionality MAINS SOCKET This is a 3 pin mains socket for connecting the power cord FUSE HOLDER This is a fuse protection provided in the mains supply 1 54 3 2 4 3 2 5 3 2 6 3 2 7 3 2 8 ALPHA PROBE This is socket to which Alpha contamination probe of Nucleonix make its equivalent can be connected through a MHV to UHF cable The system will work as an Alpha Contamination monitor under this condition BETA PROBE This is socket onto which this Beta contamination probe Beta gamma probe side either shutter type or End window hammer type of probe or pancake detector probe gets connected On the detector side of the contamination probe RG59 cable is fixed into the cable gland The other end of this cable which has MHF male connector is connected onto the unit oystem permits connection to a variety of Beta gamma contamination probes as indicated in figures TEST INPUT S A Alpha This is BNC input to inject ve tail p
35. window for Beta radiation discrimination Cable length One Meter Operating Voltage 500V Cathode wall thickness 40 60 mg cm Probe dimension 210L x 32D in mm Gamma sensitivity 45 c s mR hr b End window G M Detector Probe BCP2 Uses GM125 detector with 1 end window thickness 1 5 2 mg cm2 End cap is to be removed for Beta Contamination measurement For Gamma radiation measurement end cap is to be retained c Beta Gamma Contamination Probe BCP3 This probe is offered as a part of Beta Gamma Radiation Survey Meter type RM703E This uses a thin walled GM tube which is housed in a cylindrical shell made of Aluminum Detector side of the cable has a cable gland arrangement with cable length being 1 0 meters There is a rotating shutter arrangement made of SS shell which is kept open for Beta measurement Detector Thin wall Beta Gamma detector GM133 or its equivalent Detector Probe 35cm L x 3 2cm Dia Operating Voltage 900V Cable Length 1 0 meter This also serves as a clothing probe for Beta Gamma hand foot amp clothing monitor or as a Contamination probe for bench model Contamination Monitor d Alpha Contamination Probe type ACP2 of Nucleonix make serves as a Alpha Contamination Probe with a viewing area of approx 20 sq cm 2 dia It is designed to work with Nucleonix make Contamination Monitor Bench Model CM712 or its equivalent Alpha Scintillator Screen Circular Scintillator Z
36. y of the RF transformer steps up the AC voltage by 60 times it is converted to DC through a voltage doubler circuit Through feedback loop amp regular chip regulation is achieved Depending upon the detector connected one can set the HV bias to the desired voltage Typically for a G M detector contamination probe it may be 500V or 900V and for Alpha contamination probe it is 900V Alpha amp Beta contamination probes These are essentially an a Alpha contamination probe of 100 Sq cm area Zns scintillator coupled to PMT serves as the alpha detector PMT HV biasing circuit amp suitable anode load resistor amp coupling capacitors give ve tail pulses for the alphas detected This goes to ve tail to TTL converter b Beta gamma contamination probe which essentially is a thin walled long GM detector covered with an SS sliding shutter type of enclosure Detector output ve tail pulses go to tail to TTL converter from here Tail pulse to TTL converter These are two separate hybrid pre amplifiers with built in font end charge sensitive stage amp amplifier Followed by this there is a comparator amp a monostable One is in Alpha detector probe path amp the other in the Beta probe path AMUX This is addressed by microcontroller port control to select either Beta or Alpha detector output to the counter 6 digit counter AMUX output goes to counter which is connected to IC bus through which this counter read
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