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Model 52-1 Family 

Technical Manual   

Section 10

 

Ludlum Measurements, Inc. 

Page 10-1 

July 2018 

 

 

Drawings 

Front of Manual 

Front Panel, Drawing 215 x 999 

AC Panel Assembly, Drawing 215 x 999A 

 

Back of Manual 

Boards and Wiring Diagram 

Main Board, Drawing (6 sheets), 215 x 342-342E 

Main Board Layout, Drawing 215 x 343 

Detector Interface Board, Drawing 215 x 347 

Detector Interface Board Layout, Drawing 215 x 348A 

Power Supply Board, Drawing 215 x 1071 

Power Supply Board Layout, Drawing 215 x 1072 

1 1/8 inch Voltage Divider, Drawing 435 x 435 

1  1/8  inch  Voltage  Divider  Component  Layout,  Drawing  (2  sheets) 
435 x 436A 

Resistor Board, Drawing 215 x 782 

Resistor Board Layout, Drawing 215 x 781A (2 sheets) 

Wiring Diagram-Electronics, Drawing 215 x 1044 (2 sheets) 

 

Assembly and Setup 

Model 52-1 & 52-5 Series Packing Instructions, Drawing 215 x 225C 

Model 52-6 Series Packing Instructions, Drawing 215 x 633B 

Model 52-1 & 52-5 Series Overall Assembly, Drawing 215 x 225A 

Model 52-6 Overall Assembly Drawing 215 x 633A 

Section 

10 

Содержание 52-1

Страница 1: ...LUDLUM MODEL 52 1 FAMILY PORTABLE SCINTILLATION PORTAL MONITORS July 2018 Serial Number 210041 and Succeeding Serial Numbers ...

Страница 2: ...LUDLUM MODEL 52 1 FAMILY PORTABLE SCINTILLATION PORTAL MONITORS July 2018 Serial Number 210041 and Succeeding Serial Numbers ...

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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 7: ...el 4 3 Parameters and Functions 4 3 RS 232 Port 4 5 Water Resistant Sleeve 4 6 Theory of Background Management 4 6 Safety Considerations 5 Environmental Conditions for Normal Use 5 1 Cleaning Instructions and Precautions 5 1 Electrical Safety Precautions 5 2 Warning Markings and Symbols 5 3 Maintenance and Recalibration 6 Maintenance 6 1 Recalibration 6 1 Checkout Procedure 7 General 7 1 Equipment...

Страница 8: ...lation Porta Monitors 9 1 Main Board Drawing 215 x 342 342E 9 1 Detector Interface Board Drawing 215 x 347 9 4 Power Supply Drawing 215 x 1072 9 5 1 1 8 inch Voltage Divider Drawing 435 x 435 9 6 Resistor Board Drawing 215 x 782 9 7 Wiring Diagram Drawing 215 x 1044 9 7 Retrofit Miscellaneous 9 8 Drawings and Diagrams 10 ...

Страница 9: ...ches wider Model of Detectors Inside Width Volume Total 52 1 4 24 inches 672 in3 52 1 1 4 32 inches 672 in3 Model 52 5 52 5 1 52 6 and 52 6 1 The Model 52 5 and 52 6 have the same width dimensions as the Model 52 1 The Model 52 5 is about an inch taller due to the addition of a detector in the base It has 5 detectors The Model 52 6 uses 6 detectors with another additional detector located at the t...

Страница 10: ...uttons located below the LCD These portal monitors can be operated in a walk through basis with a quick scan occurring while a person is positioned within the portal In this mode checking is performed every 200 milliseconds while the portal is occupied 600 milliseconds before and 600 milliseconds after the portal is occupied The portal monitor can also monitor in a stop and count mode allowing for...

Страница 11: ...12 Vdc wall adapter supplied 12 Vdc cigarette lighter adapter cable or from three or six D cell batteries Typical battery life is 69 hours using six fresh alkaline batteries and 28 hours using three fresh batteries Output RS 232 and dry contacts for radiation alarm and failure conditions Sensitivity 1 µCi 37 5 kBq 137 Cs in walk though mode in 10 µR hr 0 1 µSv h background field Energy Response 30...

Страница 12: ... For Model 52 1 206 x 61 cm 81 x 24 in H x W For Model 52 1 1 206 x 81 cm 81 x 32 in H x W For Model 52 5 206 x 61 cm 81 x 24 in H x W For Model 52 5 1 206 x 81 cm 81 x 32 in H x W For Model 52 6 206 x 61 cm 81 x 24 in H x W For Model 52 6 1 206 x 81 cm 81 x 32 in H x W Case Dimensions 122 x 61 x 30 5 cm 48 x 24 x 12 in H x W x D Same case is used for all four models Detector Size Each of the four...

Страница 13: ...p the system are 1 Base 1 Bottom Left Section L1 1 Top Left Section L3 1 Top Section 1 Electronics Section 1 Power Cord 1 Remote electronics extension cable optional 2 Stabilizer Legs optional Unpack the container and inventory to ensure that all pieces are present Any of the four models of the portal monitor can be assembled without tools All connections are made with latches To connect a latch l...

Страница 14: ...nto the back of the Bottom Left section with the blank end facing down First engage the black connectors Then ensure that the pin on the back of the Bottom Left section goes into the hole on the electronics Attach the latches If you are using the optional Remote Electronics Extension Cable connect one end of the cable to the Bottom Left section and the other end to the Electronics Locate the elect...

Страница 15: ...e the portal to enter the RADIATION ALARM status until the alarm time parameter is complete In stop and count mode you should stand in the portal for the duration of the count time At the end of the count time the portal should enter the RADIATION ALARM status until the alarm time parameter is complete Repeat alarm checks for all four sections to confirm that all detectors are functioning To also ...

Страница 16: ...nfrared beam and the green READY light will start flashing indicating that the portal is now CHECKING A soft low pitched beep will also occur In walk through mode the subject may simply continue walking through the portal In stop and count mode the yellow INCOMPLETE light will illuminate if the subject leaves the portal before the count is complete A soft low pitched beeping will also warn the sub...

Страница 17: ...e an alarm has been validated after one or two confirming measurements the subject can be moved away 10 m from the monitor and a secondary scan with a hand held meter can be performed to identify the location s of the contamination or point source Note The red detector alarm light LEDs will offer guidance as to the probably location s of the radioactivity on the subject ...

Страница 18: ...may only be changed while in the setup mode Decrement Down Arrow Button decreases or changes a parameter when in setup mode During instrument operation pressing this key will show the number of alarms and the number of passages since power up Enter Key selects or advances display If the ENTER key is pressed while turning the instrument ON the instrument is loaded with a set of default parameters T...

Страница 19: ...es to indicate the system is checking for excess radiation It stops flashing at the end of the count time in stop and count mode or whenever the user leaves the portal in walk through mode Incomplete Updating yellow LED indicates that a count was in progress and the subject stepped out of the portal before the count was complete The INCOMPLETE LED stays on for the incomplete time or until the subj...

Страница 20: ...P4 Instrument Fail Normally Closed P5 Instrument Fail Common P6 Instrument Fail Normally Open EXT Switch 3 pin connector for an external activation switch External switch can be a passive push button switch or can be an NPN transistor output infrared sensor Parameters and Functions This section lists the different parameters of these instruments and their functions To enter setup mode press and ho...

Страница 21: ...ound radiation has increased or that a detector has failed Sigma This parameter sets the number of standard deviations above background that it takes to set off an alarm A standard deviation is assumed to be equal to the square root of the background count As a simple example a 3 sigma alarm of a detector with a background count rate of 100 counts is calculated as 3 0 times the square root of 100 ...

Страница 22: ...the audio RS 232 Port The RS 232 port allows the instrument to be connected to a printer or a computer so that a record can be kept of the activity of the instrument When connected to a printer When the instrument is first turned on the printer will print the parameter settings From then on when an alarm occurs the printer will print out the time and date the background counts and the number of si...

Страница 23: ... connector Fold the sleeve over the top of the electronics and then attach the electronics to the detector section Proceed with operation of the instrument Theory of Background Measurement These Ludlum instruments are designed to detect very small increases in radiation above the ambient background radiation The ambient background fluctuates due to variations in cosmic radiation radon gas buildup ...

Страница 24: ...kground and by using the attenuation parameter to compensate for the attenuation of a person inside the portal During setup have an average sized person stand in the portal while the initial background is calculated Figure the average percentage change in background between unoccupied and occupied background and use that number for the attenuation parameter During setup another parameter that can ...

Страница 25: ...ions is shown below 1 0 Sigma 15 87 or 15 87 nuisance alarms in 100 chances 2 0 Sigma 2 28 or 2 28 nuisance alarms in 100 chances 3 0 Sigma 0 13 or 13 nuisance alarms in 10 000 chances 3 1 Sigma 0 10 or 1 nuisance alarms in 1 000 chances 3 7 Sigma 0 01 or 1 nuisance alarms in 10 000 chances 4 0 Sigma 0 003 or 3 nuisance alarms in 100 000 chances 5 0 Sigma 0 00003 or 3 nuisance alarms in 10 000 000...

Страница 26: ...aximum transient voltage of 1500 Vac Installation Category II Overvoltage Category as defined by IEC 1010 1 Pollution Degree 3 as defined by IEC 664 Cleaning Instructions and Precautions The Model 52 1 52 5 and 52 6 series of instruments may be cleaned externally with a damp cloth using only water as the wetting agent Do not immerse the instrument in any liquid Observe the following precautions wh...

Страница 27: ...t which is specified may result in fire or electric shock Do not cut kink otherwise damage nor modify the power supply cord In addition avoid using the power cord in close proximity to heaters and never place heavy objects including the unit itself on the power cord as doing so may result in fire or electric shock Avoid installing or mounting the unit or its power supply in unstable locations such...

Страница 28: ...ing point for the safety ground This symbol is visible inside the chassis CAUTION per ISO 3864 No B 3 1 designates hazardous live voltage and risk of electric shock During normal use the stabilizer legs must be installed to avoid a tip over of the unit Without the stabilizer legs a substantial impact to the front or back of the unit could cause the unit to tip and fall This symbol appears on the s...

Страница 29: ...nstrument to sit for one minute before cleaning Recalibration Recalibration is required after any repairs or adjustments have been made to the instrument Recalibration is not normally required following instrument cleaning battery replacement or detector cable replacement Note Ludlum Measurements Inc recommends recalibration at intervals no greater than one year Check the appropriate regulations t...

Страница 30: ...nation of the pulse threshold and high voltage of each detector interface board located on each detector of the portal frame No adjustments are possible to the threshold voltage level which is fixed by component values The design threshold level is 4 mV and operating high voltage is approximately 700 1200 Vdc Proper high voltage setting is determined by completing a high voltage plateau with the i...

Страница 31: ...round on the two pin connector on the detector interface board Attach the counter or oscilloscope to pin 1 of the TLC372 comparator Adjust pulser amplitude to approximately 4 mV 1 mV until pulses just appear Adjust R18 until the Model 500 Pulser reads within 5 of the correct high voltage The correct high voltage should be determined by running a voltage plateau with the detector and one or more ra...

Страница 32: ... 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 electronics products and should be recycled separately The list is not all inclusive nor does it suggest that all materials are present i...

Страница 33: ...Assembled Model 52 6 Portal Monitor 48 3611 UNIT Completely Assembled Model 52 6 1 Portal Monitor 48 3603 BOARD Completely Assembled Main Circuit Board 5215 340 C1 68µF 6 3V 04 5654 C2 C4 0 1µF 50V 04 5663 C5 10µF 25V 04 5655 C6 0 1µF 50V 04 5663 C7 10µF 25V 04 5655 C8 0 01µF 50V 04 5664 C9 27pF 100V 04 5658 C10 0 01µF 50V 04 5664 C11 10µF 25V 04 5655 C12 27pF 100V 04 5658 C13 C14 0 01µF 50V 04 56...

Страница 34: ...0 Q9 2N7002L 05 5840 Q11 Q21 2N7002L 05 5840 U1 CD74HC138M 06 6339 U2 PCF8593TD 06 6403 U3 CD74HC00M 06 6308 U4 MAX232D 06 6382 U5 27C512 15N DIP28 06 6264 U6 HM62256ALP 10SL 06 6301 U7 ICL7660SCBA 06 6437 U8 24C65ISM 06 6401 U9 N80C51FA 06 6332 U10 CD74HC573M 06 6298 U11 PCF8574TD 06 6402 U15 U16 N82C54 06 6309 U17 TLC372ID 06 6290 U18 PCF8574TD 06 6402 U19 U20 TLC372ID 06 6290 CR1 MMBD914LT1 07 ...

Страница 35: ...923 RN2 NETWORK 22k 12 7917 RN3 NETWORK 220k 12 7923 RN4 NETWORK 4 7k 12 7918 Y1 6 144MHZ 01 5262 Y2 32 768Khz 01 5305 L1 L6 470 µH 21 9699 P1 P2 640456 5 MTA 100 13 8057 P3 P4 640456 3 MTA 100 13 8081 P5 640456 2 MTA 100 13 8073 P6 1 640456 6 13 8134 P7 640445 3 MTA 156 13 8125 P8 640456 7 MTA 100 13 8115 P9 640456 2 MTA 100 13 8073 P10 1 640456 0 MTA 100 13 8066 P17 P18 640456 2 MTA 100 13 8073 ...

Страница 36: ... 50V 04 5664 C11 0 001µF 2kV 04 5703 C12 10 pF 100V 04 5673 C13 0 01µF 50V 04 5664 C14 0 01µF 2KV 04 5722 C15 47 pF 100V 04 5660 C16 10µF 25V 04 5655 C17 0 01µF 2kV 04 5722 C18 C22 0 001µF 2kV 04 5703 C23 C27 0 01µF 500V 04 5696 CR1 CMSH1 40M 07 6411 CR2 CR8 CNOD2004S 07 6402 Q1 MTD2N50E 05 5855 R1 R4 150 OHM 12 7965 R5 R6 47 5 OHM 12 7966 R7 100k 12 7834 R8 1 82k 12 7030 R9 10k 12 7839 R10 4 75k ...

Страница 37: ...05ACM 05 5864 L1 L2 470 µH 21 9224 P20 640456 2 MTA 100 13 8073 P34 640456 2 MTA 100 13 8073 W1 COAXIAL CONNECTOR 21 9463 DS1 LED SML LX1206SRC TR RED 1206 07 6648 BOARD Completely Assembled Power Supply 5215 1071 C1 C5 68µF 25V 04 5828 C6 C7 0 1µF 100V 04 5792 C8 100pF 100V 04 5661 U1 LT1304CS8 06 6434 U3 MAX1771 06 6845 CR1 CR5 CMSH1 40M 07 6411 CR6 SSA34 E3 61T 07 6610 CR7 CR10 CMSH1 40M 07 641...

Страница 38: ... 8276 L1 l2 22µH 21 9208 VR1 OKI 78SR 5 21 8637 P1 640456 6 MTA100X6 13 8095 P15 640456 5 MTA100X5 13 8057 P16 640456 2 MTA100X2 13 8073 P33 640445 2 MTA156X2 13 8098 BOARD Completely Assembled Voltage Divider 5435 182 C1 C3 0 01µF 200V 04 5725 C4 0 0047µF 3KV 04 5547 R1 10M 1 8W 1 12 7996 R2 7 5M 1 8W 5 12 7971 R3 R10 10M 1 8W 1 12 7996 R11 2 21M 1 8W 1 12 7002 R12 R13 6 04M 1 8W 1 12 7071 TRANSI...

Страница 39: ...95 P104 P105 640456 2 MTA 100 13 8073 P106 640456 5 MTA 100 13 8057 P107 640456 4 MTA 100 13 8088 P108 640456 7 MTA 100 13 8115 S1 DM62J12S205PQ 08 6715 J12 L712AS 21 8795 J29 RM12BRD 3PH 71 3PM 13 8546 J31 RS 232 9 PIN D 13 8556 J38 IR RECEIVER 2310737 J40 IR TRANSMITTER 2310738 B1 B6 BATTERY D 21 9313 FP5 MEMBRANE SWITCH KEYPAD 7215 779 SP1 ALARM TXC V86 515 Q 5 15VDC XLOUD 21 8802 Model 52 1 12...

Страница 40: ...Power Supply Board Drawing 215 x 1071 Power Supply Board Layout Drawing 215 x 1072 1 1 8 inch Voltage Divider Drawing 435 x 435 1 1 8 inch Voltage Divider Component Layout Drawing 2 sheets 435 x 436A Resistor Board Drawing 215 x 782 Resistor Board Layout Drawing 215 x 781A 2 sheets Wiring Diagram Electronics Drawing 215 x 1044 2 sheets Assembly and Setup Model 52 1 52 5 Series Packing Instructions...

Страница 41: ... Section10 Ludlum Measurements Inc Page 10 2 July 2018 Model 52 1 52 5 Series Dimensions Drawing 215 x 225 Model 52 6 Series Dimensions Drawing 215 x 633 Car Base Assembly Drawings 215 x 332 332A Car Base Setup Drawing 215 x 374 374B ...

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