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Ludlum Measurements 251450 Скачать руководство пользователя страница 46

Model 3030P

Technical Manual

Section 7

Ludlum Measurements, Inc.

Page 38

February 2021

MDA Calculations

This screen shows the calculated MDA values for all count times based on
the current background and efficiency values. The confidence level may be

set at 90%, 95%, or 99%. This screen is only available when the instrument
is in DPM mode. The data may also be printed to a printer.

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Содержание 251450

Страница 1: ...LUDLUM MODEL 3030P ALPHA BETA SAMPLE COUNTER February 2021 Serial Number 251450 and Succeeding Serial Numbers Software Version 1 6 4 and Succeeding Versions ...

Страница 2: ......

Страница 3: ...TER February 2021 Serial Number 251450 and Succeeding Serial Numbers Software Version 1 6 4 and Succeeding Versions LUDLUM MEASUREMENTS INC 501 OAK STREET P O BOX 810 SWEETWATER TEXAS 79556 800 622 0828 USA CANADA 325 235 5494 FAX 325 235 4672 ...

Страница 4: ...anty of merchantability or fitness which extend beyond the description of the face there of If the product does not perform as warranted herein purchaser s sole remedy shall be repair or replacement at the option of Ludlum Measurements In no event will Ludlum Measurements be liable for damages lost revenue lost wages or any other incidental or consequential damages arising from the purchase use or...

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Страница 6: ...ck Panel 16 Internal Controls 16 5 SAFETY CONSIDERATIONS 17 Environmental Conditions for Normal Use 17 Cleaning Instructions and Precautions 17 Warning Markings and Symbols 18 Electrical Safety Precautions 19 6 CALIBRATION AND MAINTENANCE 20 Calibration 20 Recommended Sources 20 Calibration Procedure 20 Maintenance 22 Cleaning a PIPSTM Detector 22 7 COMPUTER SOFTWARE 29 Parameters 31 QC Check 34 ...

Страница 7: ... Loss of Count Timer 44 RNn Read MDA 44 RP Read the PC Time 44 RQn 44 RR Read Count 45 RS Read Samples 45 RT Read Current Count Time 45 RU Read Comment 45 RXn Read the Crosstalk 46 RY Read Recycle Mode Status 46 Rn Read the Alarm Set Points 46 Xn Set Crosstalk Mode 46 SBnxxxxxx Set Background Subtract 46 SCmmddyyyy Set Calibration Date 46 SDmmddyyyyz Set Date 46 SEnxxx Set Efficiency 47 SHnxxxxxxx...

Страница 8: ...FTWARE LICENSE 50 8 RECYCLING 52 9 PARTS LIST 53 Model 3030P Alpha Beta Sample Counter 53 Main Board Drawing 337 245 53 Preamp Board Drawing 337 335 55 Display Board Drawing 337 89 57 Wiring Diagram Drawing 337 354 57 10 DRAWINGS AND DIAGRAMS 59 ...

Страница 9: ...r count time or may be enabled to operate with advanced features The USB type B connector on the back of the instrument allows attachment to a computer Software is provided to allow the setup of parameters or advanced features A computer is NOT necessary for normal operation of the unit The counts per minute CPM or disintegrations per minute DPM modes may be enabled to allow the count to be conver...

Страница 10: ...l shielding kit is available to reduce the beta background especially in area of elevated radiation levels This kit may be installed after purchase and increases the weight by approximately 4 5 kg 10 lb Notice The detector is sensitive to microphonics Vibration or shock to the instrument during counting could produce noise or false counting Avoid touching the tray while counting and place the inst...

Страница 11: ...ipment using a small set screw which can be removed using a 1 16 inch Allen wrench It is suggested that after the screw is removed that the screw is re secured in place with a small amount of Loctite thread locker either using the Thread locker SR Type 222 Purple or 222MS MIL SPEC MIL S 46163A for existing designs ASTM D 5363 NSF P1 CFIA or equivalent Every returned instrument must be accompanied ...

Страница 12: ...matically install If desired double click setup exe to manually install the software If the software is to be installed on a computer laptop without a CD drive software is available by calling the Ludlum Measurements Sales Department Navigate to the directory where the software has been downloaded and extracted to and double click on the Model_3030P_Installer X X X version of the installer softwar...

Страница 13: ...Model3030P TechnicalManual Section2 Ludlum Measurements Inc Page 5 February 2021 Agree to the license terms Select Next Note the install directory and select Next ...

Страница 14: ...y 2021 Take note of the directory to which the executable file is saved After completion of the installation the program may be accessed through the directory in which it was saved and or the program start menu shortcut Select the Start Menu folder and select Next Select Next ...

Страница 15: ...l Section2 Ludlum Measurements Inc Page 7 February 2021 Select Next The software will complete installation After the installation is complete the FTFI CDM Drivers will be installed and the following install dialog will appear ...

Страница 16: ...Model3030P TechnicalManual Section2 Ludlum Measurements Inc Page 8 February 2021 Select Extract Select Next ...

Страница 17: ...Model3030P TechnicalManual Section2 Ludlum Measurements Inc Page 9 February 2021 Accept the license agreement and select Next Select Finish ...

Страница 18: ...d and then turn the instrument on using the back panel power switch upper left corner Upon power up the LCD displays become backlit the front panel indicators LED s illuminate and the alpha and beta displays show all eights 888888 Next the firmware version is displayed in the alpha display Instrument parameters will display before initialization completes if the Show Parameters during Power Up box...

Страница 19: ...n Section 6 of this manual Also if desired perform a QC check See Section 6 of this manual for further details on QC check The COUNT TIME MINUTES switch should be set based on the count rates being observed and the desired statistical sensitivity and performance Set the VOLUME control to the desired level of audio Proceed to use the instrument For further information on instrument controls or func...

Страница 20: ...indicators for QC daily QC check needed LOW BATT MEANS battery voltage is low CPM DPM means counting in CPM or DPM mode αAL βAL means count has exceeded the alarm set point Section 3 When the Model 3030P is counting there will be colons present on the display as shown in the top right photo The display also has a rollover indication showing that the counts have exceeded the display capability seen...

Страница 21: ...lts could be wrong Warning If in cpm dpm count averaged rate the value goes over 999999 but falls back under 999999 by the end of the count the decimal points will also be displayed both when 999999 is exceeded and when the count time is complete Count Time Select 0 1 0 5 1 2 5 10 or 60 minutes or the user defined PC setting which is defined during setup using the USB port User defined count time ...

Страница 22: ...diameter samples with provided aluminum insert carrier up to 1 02 cm 0 4 in thick Audio dual tone one for each channel click per event type with volume control Power universal AC input 95 250 Vac 50 60 Hz wall mount supply outputting 5 Vdc at up to 1 amp or 4 each D cell batteries provide power for 48 hours Size 19 x 20 3 x 25 4 cm 7 5 x 8 x 10 in H x W x D including handle in height and drawer ha...

Страница 23: ...output from off to full volume Tray A slide out tray is used to hold the sample during a count cycle The tray will hold samples that are up to 1 02 cm 0 4 in thick by either 2 5 cm 1 in or 5 1 cm 2 in in diameter The tray insert is held in place by a set screw right side and is reversible by loosening the set screw for selection of sample diameter ALPHA A six digit backlit LCD readout indicates co...

Страница 24: ... red LED indicator illuminates whenever the beta count exceeds the alarm level established during setup Back Panel ON OFF a rocker switch used to apply power to the instrument when in the ON position USB a type B connector for connection to a computer Power Input Jack 5 0 Vdc 5W 2 Battery Tubes Each tube holds 2 D cell batteries Internal Controls The following dipswitches and jumpers are located o...

Страница 25: ...gory II Overvoltage Category as defined by IEC 1010 1 Pollution Degree 3 as defined by IEC 664 Occurs when conductive pollution or dry nonconductive pollution becomes conductive due to condensation This is typical of industrial or construction sites Cleaning Instructions and Precautions The Model 3030P Alpha Beta Sample Counter may be cleaned externally with a damp cloth using only water as the we...

Страница 26: ...t please pack appropriately Caution Verify instrument voltage input rating before connecting to a power converter If the wrong power converter is used the instrument and or power converter could be damaged The Model 3030P Alpha Beta Sample Counter is marked with the following symbols DIRECT CURRENT DC IEC 417 No 5032 designates an input receptacle that accommodates a power cord intended for connec...

Страница 27: ...g instructions to avoid a potentially hazardous situation which if mishandled could result in death or serious personal injury as well as property damage Do not expose the unit to rain or an environment where it may be splashed by water or other liquids as doing so may result in fire or electric shock Use the unit only with the voltage specified on the unit Using a voltage higher than that which i...

Страница 28: ...ources should be as close to these geometries as possible If you want to count for 60 seconds then a source activity of about 20 000 dpm will generally result in counts given a nominal 4π efficiency of 3000 counts Counting this activity source in a tenth of a minute will result in a count of only about 300 above background and your percentage error will be greater Increasing the activity of the so...

Страница 29: ...mining the optimum operating voltage and is defined as 𝛼SourceC𝛽 BackC𝛽 𝛼NetC𝛼 100 𝐴𝑙𝑝ℎ𝑎 𝑐𝑟𝑜𝑠𝑠𝑡𝑎𝑙𝑘 and 𝛽𝑆𝑜𝑢𝑟𝑐𝑒𝐶𝛼 𝐵𝑎𝑐𝑘𝐶𝛼 𝛽𝑁𝑒𝑡𝐶𝛽 100 𝐵𝑒𝑡𝑎 𝑐𝑟𝑜𝑠𝑠𝑡𝑎𝑙𝑘 where αSourceCβ α source count in β channel BackCβ background count in β channel αNetCα Net α source count in α channel βSourceCα β source count in α channel BackCα background count in α channel βNetCβ Net β source count in β channel For the alpha beta P...

Страница 30: ...t Parameters option from the interface software in order to save a copy of the parameters efficiencies and backgrounds Maintenance Instrument maintenance consists of keeping the instrument clean and periodically checking the batteries and calibration An instrument QC check may be performed prior to each use by exposing the detector to a known source and confirming the proper reading Recalibration ...

Страница 31: ...Texwipe model TX762 or equivalent moistened with Propanol 2 Be careful to not over moisten the swabs Wipe very gently from the edge of the detector to the center to reduce the possibility of pushing contaminated materials into the bevel of the housing where it is very difficult to remove See photos below Repeat the cleaning treatment with fresh swabs as needed to eliminate traces of contamination ...

Страница 32: ...ay be done without removing the entire shielding cylindrical mounting assembly from the chassis The suggested primary method to get access to clean and or replace the PIPS detector is as follows The system should be unplugged and turned off The unit should remain powered down for approximately 5 minutes before removing the cover Using a flat blade screwdriver unscrew and remove the eight screws th...

Страница 33: ...connectors from the circuit board Now remove the four lock nuts on either side of the lead support bracket using a 7 16th socket and driver and put them aside The top of the four screws with lock washers holding the lead support bracket to the top of the detector assembly must also be removed and set aside see Drawing 337 x 236D below Carefully lift the lead support bracket up and to the side bein...

Страница 34: ... housing The detector can be detached from the electronics assembly by twisting the bayonet mount and pulling the detector away from the electronics assembly At the bottom of the detector housing there is a rubber ring with an O ring inserted in the outer ring which has some optical grease on it The detector sets inside this ring and sets almost flush with the bottom of the entire assembly shown w...

Страница 35: ...screws holding the shielding and detector assembly also seen in the lower portion of Drawing 337 x 236D using a flat blade screwdriver and set them aside The entire lead and detector assembly can be lifted and moved off to the side Be careful not to snag wires and connections while moving the assembly The assembly is heavy with the lead so ensure that you have a firm grasp on it prior to removal I...

Страница 36: ...ned as described previously or as seen in the PIPS cleaning video Re assembly of the system entails reversing the above steps with the replacement of the detector back into the housing as well as the replacement of the foam pucks and securing the assemblies back into place The system should be powered up and checked for function prior to securing the cover ...

Страница 37: ...event changes that could affect the calibration of the instrument When the software is started a dialog box is displayed allowing the user to select the instrument serial number from the drop down list The number of devices attached their serial numbers and the device descriptions are displayed in the text box After a serial number is selected the instrument s parameters are downloaded and the mai...

Страница 38: ...and Beta Crosstalk The password operation can be enabled in the Parameters menu Selecting the Password Protect menu item will enable password protection A check mark next to this menu item will indicate if password protection is on or off The password is required in order to change this setting The default password is blank until it is changed by the user using the Change Password menu item The pa...

Страница 39: ...that required the password This feature allows the user to only have to enter the password once when performing a series of operations while maintaining the security of the settings if the operator is away from the instrument for a period of time Parameters The Update button at the bottom of the window will save all changes to the instrument File Menu Load Defaults This menu item loads the file de...

Страница 40: ...ttings A value of 999999 will disable the alarm If the unit is in CPM the alarms are in CPM If the instrument is in DPM the alarms are in DPM It is up to the user to make sure that the alarms are set accordingly to the count mode Loss of Count Timer If the detector receives no counts on either the alpha or beta channel after this time expires the display will show LOC FAIL and will not operate unt...

Страница 41: ...rns on off the background subtract It will subtract the background from each channel and display the net count Alpha Beta Background Subtract These values will be subtracted while the instrument is counting For example in CPM mode with an input of 2000 CPM and a background subtract value of 1000 the reading will display 1000 The QC mode has a function to update the background subtract with values ...

Страница 42: ... a background count and stores that reading in the instrument When the QC Check is enabled every day the user must perform the QC Check procedure and receive acceptable values in order to utilize the instrument for normal use After 24 hours the instrument will light the red indicator marked QC and not allow normal use until the next QC check The predetermined steps are 1 The instrument counts a sp...

Страница 43: ... This option is only available in the Normal and Background Only QC check modes Override Count Time If enabled the count times set by the count time switch on the front of the instrument are overridden Last QC Performed the last date and time a successful QC check was performed Last Alpha Beta Efficiency the last time a QC check was run this was the computed efficiency Standard Alpha Beta Efficien...

Страница 44: ...for the Standard Alpha Efficiency and the Standard Beta Efficiency The values input here should reflect the average efficiency with the given sources After entering the values press the Update button 4 Enter values for the Allowable QC Efficiency These percentage values entered allow the instrument to accept efficiencies that are somewhat higher and lower than the standard efficiency For example i...

Страница 45: ...anging Thresholds Read Pressing this button will read the current instrument threshold and window settings for alpha and beta Update Pressing this button will update the instrument with changes to the alpha and beta threshold and window and will update other changes made in other tabs ...

Страница 46: ...A Calculations This screen shows the calculated MDA values for all count times based on the current background and efficiency values The confidence level may be set at 90 95 or 99 This screen is only available when the instrument is in DPM mode The data may also be printed to a printer ...

Страница 47: ...le On This will activate the recycle function As soon as the count completes another one is started automatically Direct Output On When activated the instrument will output the count data to the serial port No handshaking is active A serial printer may be connected to display the data The date time alpha reading beta reading count mode and count time is output The count mode is indicated by a sing...

Страница 48: ... is useful for generating an alpha spectrum for an unknown sample This process is slow essentially the unit adjusts the threshold and window and takes a reading at each step within the specified range The user can choose the beginning threshold the region width and the ending window set points all in mV The user also chooses the count time for each step When the count time is chosen the time switc...

Страница 49: ...s as follows Window width 10 mV Starting Threshold 100 mV Ending Threshold 2800 mV Count Time 6 seconds USB Communication The Model 3030P communicates by way of a USB interface A standard type A to type B USB cable is required The Model 3030P uses the line feed character LF to terminate commands It is acceptable to terminate commands with a carriage return and a line feed character All messages re...

Страница 50: ...ous count functions The count time is determined by the positioning of the COUNT TIME SWITCH on the front panel unless otherwise noted See command RR for the format of the count results 1 Start a count 2 Stop a count in progress 3 Clear alarms 4 Start a count and automatically return the results 5 Start a one minute count and automatically return the results Dn Display Mode The display can be set ...

Страница 51: ...is command reads the next sample number Subtract one from this number to get the total number of samples logged Returns nnnn RBn Read Background Subtract This command reads the alpha or beta background subtract value The value returned must be divided by 10 to get the correct value Returns nnnnnn 1 Read alpha background subtract 2 Read beta background subtract RC Read Calibration Due Date This com...

Страница 52: ... 4 Read beta scaler MDA RP Read the PC Time This command reads the PC or user defined count time in seconds The PC time is used when the COUNT TIME SWITCH on the front panel is set to PC Returns nnnnn n RQn This command reads the specified QC parameter 01 Reads QC enabled status Returns ON or OFF 02 Reads current alpha efficiency Returns nn 03 Reads current beta efficiency Returns nn 04 Reads stan...

Страница 53: ...aaaaa bbbbbb x tttt t aaaaaa alpha count bbbbbb beta count x S scaler C cpm and D dpm tttt t count time in minutes If count is in progress this value shows count time remaining RS Read Samples This command reads all logged samples from memory While reading samples the audio is stopped and the displays show a scrolling series of dashes along with the sample number A marks the end of the samples Ret...

Страница 54: ... the specified alarm set point Returns nnnnnn 1 Read alpha alarm set point 2 Read beta alarm set point 3 Read alpha beta alarm set point Xn Set Crosstalk Mode This command sets crosstalk ON OFF or returns crosstalk status where n is a value of 0 1 or 2 0 Sets crosstalk OFF 1 Sets crosstalk ON 2 Returns status SBnxxxxxx Set Background Subtract This command sets the alpha or beta background subtract...

Страница 55: ...lpha and beta MDA 1 Set alpha MDA 2 Set beta MDA SPxxxxx x This command sets the user defined count time when the COUNT TIME SWITCH is in the PC position The maximum is 99999 9 seconds SQnn Set QC parameters This command sets the specified QC parameter 01 Set QC enabled status 0 OFF 1 ON 04 Set standard alpha efficiency format 05 Set standard beta efficiency format 06 Set alpha source size cpm for...

Страница 56: ...This command sets a user defined 10 character comment which is saved with the logged samples SXnyyy Set Crosstalk This command sets the beta to alpha or alpha to beta crosstalk The crosstalk must be multiplied by 10 before sending 1 Set beta to alpha crosstalk 2 Set alpha to beta crosstalk SYn Set Recycle Mode This command sets recycle mode If recycle mode it ON after a count completes another one...

Страница 57: ...Measurements Inc Model 3030P Sample Data 02 02 2009 06 59 57 PM Instrument Serial Number 251450 Header 1 John Q Publi Header 2 Serial 12345 Header 3 Site Buildin Header 4 Room 7 EastW Header 5 More Comment Header 6 More Comment Calibration Due Date 1 30 2010 Last QC Check 1 30 2009 03 18 Sample Date Time Alpha Count Beta Count Count Time Type Comment 001 02 02 2009 06 59 25 436520 18850 0 1 D Text...

Страница 58: ...Model3030P TechnicalManual Section7 Ludlum Measurements Inc Page 50 February 2021 ...

Страница 59: ...Model3030P TechnicalManual Section7 Ludlum Measurements Inc Page 51 February 2021 ...

Страница 60: ...ut simply desires to inform its consumers of the range of recyclable materials present in its products so that the user will have flexibility in following all local and federal laws The following types of recyclable materials are present in Ludlum Measurements Inc electronic products and should be recycled separately The list is not all inclusive nor does it suggest that all materials are present ...

Страница 61: ...25V 04 5655 C2 0 1µF 100V 04 5792 C3 C8 0 1µF 250V 04 5772 C9 C16 0 1µF 100V 04 5792 C17 22µF 100V 04 5799 C18 100pF 3KV 04 5735 C19 100pF 100V 04 5661 C20 C25 100µF 16V 04 5794 C26 C32 0 1µF 100V 04 5792 C33 100µF 16V 04 5794 C34 C37 1µF 16V 04 5701 C38 0 001µF 2KV 04 5703 C39 C49 0 1µF 100V 04 5792 C50 C51 27pF 100V 04 5658 C52 0 1µF 100V 04 5792 C53 C54 27pF 100V 04 5658 C55 10pF 100V 04 5673 C...

Страница 62: ...93TD 06 6403 U12 U13 24C65ISM 06 6401 U14 U15 CD74HC4538 06 6686 U16 U19 MAX998 06 6674 U20 DAC124S085 06 6734 U22 FT232BL 06 6733 CR1 CR3 CMPD2004S 07 6402 CR4 CMSH1 40M 07 6411 CR5 C9 MMBD914LT1 07 6353 CR10 C13 CMSH1 40M 07 6411 CR14 CR15 MMBD914LT1 07 6353 R1 R9 100K 1 4W 1 12 7834 R10 500M 330mW 10 12 7045 R11 1M 1 10W 1 12 7081 R12 100K 1 4W 1 12 7834 R13 9 1Meg 0 1W 5 12 7208 R14 R19 10K 1 ...

Страница 63: ...1 R41 R44 22 1K 1 8W 1 12 7843 R45 1K 1 4W 1 12 7832 J1 RAPC712 13 8445 J2 67068 8000 USB 13 8575 P1 640445 3 13 8125 P2 P3 640456 5 MTA100 13 8057 P4 1 640456 2 MTA100 13 8066 P5 640456 6 MTA100 13 8095 P7 640456 2 MTA100 13 8073 L1 220uH 21 9678 L2 22uH 21 9808 L3 L4 Inductor 21 9009 L5 22uH 21 9808 L6 Inductor 21 9008 SW1 DF62J1252AHQA 08 6840 SW2 SW DIP 2 08 6712 CR16 LM385M3 1 2 05 5881 B1 LI...

Страница 64: ... 06 6737 CR1 CR2 MMBD914LT1G 07 6353 CR3 CR4 MMSZ5236B V GS08 07 6539 L1 L2 220µh 21 9678 R1 R4 1K 1 4W 1 12 7832 R5 10K 1 4W 1 12 7839 R6 R7 1K 1 4W 1 12 7832 R8 14 7K 1 4W 1 12 7068 R9 10M 1 4W 5 12 7955 R10 100M 330mW 10 12 7044 R11 49 9 OHM 1 10W 1 12 7138 R12 10K 1 10W 1 12 7083 R13 49 9 OHM 1 10W 1 12 7138 R14 10K 1 10W 1 12 7083 R15 49 9OHM 1 4W 1 12 7011 R16 475K 1 4W 1 12 7858 P1 BNC 50 O...

Страница 65: ...12 7834 R19 200 OHM 1 4 W 1 12 7846 R20 100K 1 8W 1 12 7834 P1 MTA100 1 640457 0 13 8168 DSP1 DSP2 3918 365 920LCD 07 6252 DS1 DS4 HLMP 2300 2304 07 6377 DS5 DS6 HLMP 2500 GRN BAR 07 6403 DS7 DS8 LED BACKLITE 07 6451 SW1 SW2 SW 3CTH9 PB 08 6716 DS1 UNIMORPH MZ35290BDO 21 9251 J1 CONN 3 640428 3 MTA156 13 8124 J2 J3 J9 J11 CONN 3 640441 5 MTA100 13 8463 J4 J10 CONN 4 640441 0 MTA100 13 8197 J5 CONN...

Страница 66: ... Description Part Number B1 B2 2 EA 1 5 VOLT D DURACELL 21 9313 R1 POT 10K RV6NAYSD103A PNON LKG 09 6753 KNOBS KNOB PKG 508 1 8 08 6601 FEET BUMPER SELF LOCKING K717 21 8717 BATT HOLDER BATERY HOLDER BXS017 22 9400 D1 PIPS DETECTOR CAM 1700ABM 01 5811 BATTERY RESISTORS MISCELLANEOUS DETECTOR ...

Страница 67: ... 4 sheets Model 3030P Main Board Layout Drawing 337 x 246A 2 sheets Model 3030P Detector Preamp Board Drawing 337 X 335 Model 3030P Detector Preamp Board Layout Drawing 337 x 356A 2 sheets Model 3030P Display Board Drawing 337 88 4 sheets Model 3030P Display Board Layout Drawing 337 x 89 Model 3030P Wiring Diagram Drawing 337 x 354 Section 10 ...

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