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Manual Fluke 90100

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  • Fluke 90100 - page 1

    Model 90100 TRACKER ™ System Operators Manual May 2006 Manual No. 37826 Rev. 9 © 2006 Fluke Corporation, All right s reserved. Printed in U.S.A. All product names are trademar ks of their respective companies ...

  • Fluke 90100 - page 2

    Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com/rms ...

  • Fluke 90100 - page 3

    i Table of Contents Section 1: General Information ...................................................................................... 1-1 1.1 Introduc tion .................................................................................................. 1-1 1.2 Featur es.......................................................................... ...

  • Fluke 90100 - page 4

    ii Section 3: Theory of Operation ...................................................................................... 3-1 3.1 Introduc tion .................................................................................................. 3-1 3.2 Overall Function Description Of The Model 35360A TRACKER Display ..... 3-1 3.2.1 Powe r Supply ..... ...

  • Fluke 90100 - page 5

    General Information Introduction 1 1-1 Section 1 General Information 1.1 Introduction The Model 90100 TRACKER is a radiatio n measuremen t system intended for u se in quality assurance programs for high-en ergy accelerator s and Co 60 machines. Whil e its ease of operation make s it ideal for daily checks of beam constancy, sy mmetry, and flatness, ...

  • Fluke 90100 - page 6

    Model 90100 Operators Manual 1-2 cable is of a design that provides a hi gh degree of flex ibility and allows it to flatten to fit under a treatment room entrance door. Included with each 90100 TRACKE R System is an MS-DOS based Cu stomization program that provide s a means of performing field customi zation and calibra tions. Some of the items tha ...

  • Fluke 90100 - page 7

    General Information Before You Start- Safety Precaution s 1 1-3 WARNING CAUTION 1.3 Before You Start - Safety Precautions This product is design ed for quality assuran ce testing of therapeutic radiation treatment machin es. It is not for machine calibration nor is it intended a s a substitute for a precision dosimeter system (Farm er-type Probe an ...

  • Fluke 90100 - page 8

    Model 90100 Operators Manual 1-4 Recommended Operation Conditions Source Distance: 100 cm Collimated Field Size: 25 × 25 cm Source Dose Rate Range: 50 to 500 rads/min Nominal Ion Chamber Characteristics Wall and Window Material: Continental Polymers ACRYCAL-CP or equival ent Window Area Density: 600 mg/sq cm (0. 51 cm acrylic plastic) Window Trans ...

  • Fluke 90100 - page 9

    General Information Specifications 1 1-5 1.6.2 Model 35360A TRACKER Display Measurements Mode The measurement mode is use r-selected from the front panel prior to the start of the exposure. Dose (rad): Electrometer is ope rated in integrating mode with capacitive feedback. Dose Rate (rad/min): Electrometer is operated in non-integrating mode with r ...

  • Fluke 90100 - page 10

    Model 90100 Operators Manual 1-6 Offset Temperature Drift: The zero offset voltage will drift less than ± 1 count at the display over the operating range of 10°C to 35°C. High Performance Battery Charger Battery Type and Capacity: 6V (3 cell) L ead Acid (5 AH) provide 8 hours of conti nuous operation. Recharge Time: Fast recharge time on the ord ...

  • Fluke 90100 - page 11

    General Information Unpacking an d Inspection 1 1-7 Standard System Contents • Model 35360A TRACKER Display • Model 35300A Detector • 15 m Detector to Display Interface Cable (37783-15) • AC Line Cord • Customization Software Kit (37827): Contains disk, cable, and adapters. Optional Equipment • System Carrying Case (37780): Dimension s ...

  • Fluke 90100 - page 12

    Model 90100 Operators Manual (Blank page) ...

  • Fluke 90100 - page 13

    Operation Introduction 2 2-1 Section 2 Operation 2.1 Introduction This section contains set-u p and connection proce dures for the Model 90100 T RACKER System in order to measure therapy beam characteristi cs. If you want to use build-up to simulate tissue, you can put plates of either "solid water" or acrylic (optional accessories) secu ...

  • Fluke 90100 - page 14

    Model 90100 Operators Manual 2-2 WARNING WARNIN G C A U TI O N 2.2.1 Powering the System The Model 35360A TRACK ER Display may be o perated from either line or battery power. The li ne receptacle at the rear pane l of the Model 35360A TR ACKER Displa y mates with a 3-wire line co rd to provide a connection to line voltag e (high, neutral and earth ...

  • Fluke 90100 - page 15

    Operation Real Panel Familiarization 2 2-3 Display. Be sure to use the correct end of the cable. 3. Secure the cable at each end by twisting t he thumbs crews in a clockwise dire ction until tight. Figure 2-2. Connecting the Interface Cable to the Model 353 60A TRACKER Display Figure 2-3. Connecting the Interface Cable to the Model 353 00A Detector ...

  • Fluke 90100 - page 16

    Model 90100 Operators Manual 2-4 WARNIN G 4. Power can now be applied to the system. Wait for the Test/Detector scre en shown below before pressing any keys. Reverse the above pro cedure to disconnect t he interface cable from the 35300A Detector. Always turn the Model 35360A TRACKER Display's power off prior to connecting or disconnecting the ...

  • Fluke 90100 - page 17

    Operation Positioning the Model 353300A Detector in the Beam 2 2-5 WARNING Figure 2-4. Setup for 0-Degree Gantry An gle (NOTE: Build-up not shown for clarity) For those who have purchased the opti onal Build-Up Peg and Retainer Kit, gantry angle s other than 0 degrees may be used. For gantry angles of 90 or 2 70 degrees, place the 35300A Detector o ...

  • Fluke 90100 - page 18

    Model 90100 Operators Manual 2-6 Figure 2-5. Setup for 90- and 270-Degree Angl es (NOTE: Build -up not shown for clarity) 2.4 Operation Instructions This section contains detailed inst ructions on t he front panel operation of the Model 35360A TRACKER Display. The 35360A TRACKER Displ ay front panel keys and display are explai ned. Please note that ...

  • Fluke 90100 - page 19

    Operation Operation Instructions 2 2-7 Figure 2-6. The Model 35360A TRACKER Display Front Panel Power The POWER button toggles the system power on or off. Test/Detector The TEST/DETECTOR button displays and se quences the Test/Detector scree ns. Units Select The UNITS SELECT button displays the Units Se lect screen. Subseque nt pre sses toggle the ...

  • Fluke 90100 - page 20

    Model 90100 Operators Manual 2-8 NOTE 2.4.2 Powering Up the Model 35360A TRACKER Display Pressing the POWER button turns on the instrument. Initially, it runs self -tests, restores the temperature, pressure, air density correction facto r, front panel gain factors and measurement units to their previous values, and waits for the bias supply to stab ...

  • Fluke 90100 - page 21

    Operation Operation Instructions 2 2-9 Figure 2-9. Test/Detector Screen 2 - Ion Chambe r Calibration Factors Figure 2-10. Test/Detector Screen 3 - Bias an d Battery Voltage s Plus an Option Text Line In Figure 2-10, the battery current, "+0.1 A", is displa yed to the right of the bat tery voltage, "6.8 V". A positive current val ...

  • Fluke 90100 - page 22

    Model 90100 Operators Manual 2-10 2.4.6 Using the AIR DENSITY Button Pressing the AIR DENSITY button displays the Air Density screen , see Figures 2-12 and 2 -13. This screen contains the temperature valu e, pressure value, and Air Den sity Correction Factor (ADCF). Press the AIR DENSITY button to advance the " X " cursor to the next fiel ...

  • Fluke 90100 - page 23

    Operation Operation Instructions 2 2-11 N O TE N O TE The FPGF for the center ion chamber is displayed on the bottom line of the VFD. Use the UP and DOWN buttons to toggle the FPG an nunciator on or off. The FPG annunci ator in the upper right-hand corner of the displa y signifies that FPG corrections are ena bled, see Figure 2-15. When the FPG ann ...

  • Fluke 90100 - page 24

    Model 90100 Operators Manual 2-12 N O TE Figure 2-18. An Absolute Rate Measurement With Air Density Correctio ns and the Front Panel Gain Factors Disabled Prior to making a dose measurem ent, press the RESET button to ze ro all ion chamber readings. Pressing this button has no affect when performing dose rate mea surements. 2.4.8.2 Percent-of-Cente ...

  • Fluke 90100 - page 25

    Operation Operation Instructions 2 2-13 2.4.8.3 Underranging and Overranging Conditions The 35360A TRACKER Di splay displays an un derrange indicato r when a preset thresh old has not yet been reached, and an overrange indicator when the e l ectrometer’s maximum limi t has been exceeded (see Figures 2-22 and 2 -23). An underrange occurs in the pe ...

  • Fluke 90100 - page 26

    Model 90100 Operators Manual 2-14 N O TE Figure 2-24 illustrates the locations of the annu nciato rs on the VFD. The High Bias annun ciator would appear in place of the Low Bias annun ciator should this condition b e detected. Figure 2-24. Positions of the Battery and Bias Annunciators See Section 4 for information on how to deal with the LoBat, Hi ...

  • Fluke 90100 - page 27

    Operation Operation Instructions 2 2-15 2.4.10.1 Changing Front Panel Gain Fact or's From the Measurement Screen The five FPGF's may be set by adjusting the mea sur ement readings to achieve a set of desir ed values. Press the MEASURE SELECT button until the desire d Measurement screen is displaye d. Press the GAIN SELECT button to advanc ...

  • Fluke 90100 - page 28

    Model 90100 Operators Manual (Blank page) ...

  • Fluke 90100 - page 29

    Theory of Operation Introduction 3 3-1 Section 3 Theory of Operation 3.1 Introduction The Model 90100 TRACKER System is a radiation measurement system int ended for u s e in quality assurance programs fo r high-energy accele rators and Co 60 . The two main compone nts of the system are the Model 35300A Detector and the Model 35360A T RACKE R Displa ...

  • Fluke 90100 - page 30

    Model 90100 Operators Manual 3-2 Figure 3-1. Hardware Bl ock Diagram of the Model 35360A TRA CKER Display 3.2.1 Power Supply The Power Supply convert s AC line power in the range of 100 to 240 VAC, or 6 VDC from the intern al rechargeable battery pa ck, to the various DC voltage l eve ls that are used to power all of the other blocks of the system. ...

  • Fluke 90100 - page 31

    Theory of Operation Overall Functional Descript ion of the Model 35360A Tracker Di splay 3 3-3 3.2.2 300-VOLT Electronic Bias Supply The 300 volt ionization potential is ge nerated internally by an electronic bi as supply circuit. The suppl y eliminates the need for the 35360A TRACKER Displ a y to contain high voltage batteries. As expl ained below ...

  • Fluke 90100 - page 32

    Model 90100 Operators Manual 3-4 3.2.6 Serial Communications Port A computer interface has been p rovided in the form of a DCE configured RS-2 32 port. This port is configured for operation at 9600 baud and uses a standard Xon/Xoff hand shaking protocol. The associated RJ-45 type con nector is located on the 35360A TRA CKER Display's rear pane ...

  • Fluke 90100 - page 33

    Theory of Operation Overall Functional Descript ion of the Model 35360A Tracker Di splay 3 3-5 Above values assume nom inal electrical and radiologi ca l sensitivity, air density correction and front panel gain factors set to unity, and nominal value for the Di splay Units Conve rsion Factors. The following u nity conversion factors were used; 3. 5 ...

  • Fluke 90100 - page 34

    Model 90100 Operators Manual 3-6 Pressure Temperature mm Hg = inch Hg ∗ 25.4 K = (5/9) ∗ ( ° F -32) - 273.15 mm Hg = 760 ∗ (54,041 - feet ASL) / (54,041 + feet ASL) K = ° C + 273.15 mm Hg = 760 ∗ (16,472 - meters ASL) / (16,472 + meters ASL) mm Hg = mB ∗ 0.75006 mm Hg = hPa ∗ 0.75006 3.5 Basic Operating Equations This section lists th ...

  • Fluke 90100 - page 35

    Theory of Operation Basic Operating Qua ntities 3 3-7 3.6 Basic Operating Quantities Table 3-3. Basic Operation Quantities Quantity Description Units Comments I Current nC/Min Electrical current delivered to readout in response to radiation incident upon detector. Q Charge nC Electrical charge delivered to readout in response to radiation incident ...

  • Fluke 90100 - page 36

    Model 90100 Operators Manual (Blank page) ...

  • Fluke 90100 - page 37

    Maintenance & Serv ice Introduction 4 4-1 WARNIN G Section 4 Maintenance & Service The Model 35360A TRACKER Display and 35300A Detector contain no internal operator serviceable parts. Disassembly of either unit could resu lt in electrical shock. Always turn the 35360A TRACKER Display's power off prior to connecting or disconnecting the ...

  • Fluke 90100 - page 38

    Model 90100 Operators Manual 4-2 4.2 Troubleshooting This system contains a number of troublesh ooting procedures that may be executed by the u ser in the field. Each procedure is illustrated in the form of a flow chart and is directed towa rd resolving the specific symptom listed in the first block of the chart. Problem Figure The 35360A TRACKER D ...

  • Fluke 90100 - page 39

    Maintenance & Serv ice Troubleshooting 4 4-3 35360A TRACKER Display will not turn on (display will not light) Figure 4-1. No Display Flowch art No Y es No Y es No Y es Y es No Return 35 360A TRACKER Display Repla ce 35 360A T RACKE R Fu se s O K ? Check A C l ine fuses at rear pa nel of 35360A T RA CK ER Displ ay. A C line vol t age present? Ve ...

  • Fluke 90100 - page 40

    Model 90100 Operators Manual 4-4 Low Battery Indication at the Display Figure 4-2 Low Battery Flowchart Y es No Y es Y es No Y es No No 35360A TRACK ER Display is faul ty and will r equir e repair or r epl acem ent. Replace 35360 A T RA CK ER Fuse s OK? Check AC l ine fuses at r ear panel of 35360A T RACKER Displ ay. A C line vol t age pr esent? Ve ...

  • Fluke 90100 - page 41

    Maintenance & Serv ice Troubleshooting 4 4-5 Bias Error (LoBias or HiBias) Indication at the Display Figure 4-3. Bias Error Flowchart No No Yes Yes No Yes The 35300A D etector is faulty and will requir e repair or repl acement. Interface cable i s faulty a nd will require re pair or replace ment. The bias error has disap peared. Repeat the trou ...

  • Fluke 90100 - page 42

    Model 90100 Operators Manual 4-6 Dose Measurement Value Drifts Prior to (or following) the Exposure Figure 4-4. Leakage Flowchart No Y es Y es No Y es Y es No Yes No No Y es No Clean 35360 A TRACKER Display's interface connector via procedure giv en later in t h is s ectio n and The drift problem has been eliminated and the system is ready for ...

  • Fluke 90100 - page 43

    Maintenance & Serv ice Troubleshooting 4 4-7 WARNING Dose Rate Measurement Value Does Not Return to Zero in the Absence of a Radiation Beam Figure 5-5 Dose Rate Measurement Zero Problem Flowchart 4.3 Line Fuse Replacement Disconnect the 35360A TRACKER Display fr om other equipment along with the AC line power and turn off power before continuin ...

  • Fluke 90100 - page 44

    Model 90100 Operators Manual 4-8 WARNING NOTE 1. Position the instrument on its display face. Figure 4-6. Model 35360A TRACKER Display Fuse Repl acement 2. Remove the fuse drawer. With your fingernails, squeeze together the two ends of the fuse drawer and pull it out of its slot. 3. Replace the fuses with IEC 127 type FST5X20, 0.63 A, 250 V time-la ...

  • Fluke 90100 - page 45

    Maintenance & Serv ice Interface Connector Cleaning 4 4-9 WARNING WARNIN G 4.4 Interface Connector Cleaning Always turn the 35360A TRACKER Display's power off prior to cleaning the interface connectors. Failure to do so may result in an electrical shock. The presence of dust or lint at t he interface connectors ca n produce leakage current ...

  • Fluke 90100 - page 46

    Model 90100 Operators Manual 4-10 Table 4-1. Replaceable Parts List Description Part Number Therapy Beam Evaluator 35300A Readout 35360A System Carrying Case 37780 Fuse 38476 AC Line Cord (USA) CO-19 AC Line Cord (Europe CE E 7/7) 86512060 AC Line Cord (UK & Ireland) 86583000 AC Line Cord (Denmark) 86536041 AC Line Cord (Italy) 86531031 AC Line ...

  • Fluke 90100 - page 47

    Customizati on Introduction 5 5-1 C A U TI O N Section 5 Customization 5.1 Introduction From the factory, the Model 35360A TRACKER Di splay arrives wit h valid settings allowing you to make measurements immediately. Should the need arise to change or mo dify any of the Items described below, the Customization software provi des a friendly environm ...

  • Fluke 90100 - page 48

    Model 90100 Operators Manual 5-2 CAUTION 5.2 Make a Working Disk Before using the Customization software, we re commend that a worki ng disk be made. To make a working disk, simply copy all of the files from the disk to a blan k, formatted disk. Store the original in a safe place. Always operate the Model 90100 TRACKER System from an AC line power ...

  • Fluke 90100 - page 49

    Customizati on Screen Formats 5 5-3 Figure 5-1. Display Customization Items Screen A ppearance In the middle of the both screens, you may select any Item by pla cing the cursor on it. As you move through the list, the Help box update s its information to reflect the cursor po sition. This is the Selection mode. Figure 5-2. Display Calibration Items ...

  • Fluke 90100 - page 50

    Model 90100 Operators Manual 5-4 At the bottom of both screens, the Customization soft ware displays the active keys and a short definition for each key. On the Display Customi zation screen, the serial num b er of the 35360A TRACKER Display, the firmwa re's version, and the cu rrent date appear. The date of the last calibration appears in the ...

  • Fluke 90100 - page 51

    Customizati on Definitions 5 5-5 IMP O RTANT 5.6 Definitions This section describes all of the Items that may be cu stomized with the Customization software. It is split into two sections matchi ng the two screens. CUSTOMIZATION ITEMS Power Down Interval The power down interval is used to specify the number of minutes the 3536 0A TRACKER Display re ...

  • Fluke 90100 - page 52

    Model 90100 Operators Manual 5-6 The 35360A TRACKER Di splay supports four u nits of radiation. To convert between the se units, use Table 5-1. This table was developed from accepted de finitions of radiation units. While Table 5-1 shows sieverts and grays as e quivalent, we acknowle dge that other factors may contribut e to this conversion. Additi ...

  • Fluke 90100 - page 53

    Customizati on Setting the Electrometer Gains and Offsets 5 5-7 WARNIN G ELECTROMETER OFFSET (ADZ) The procedure for setting the electrometer offset s for current and charge is the same. For every electrometer channel, repe at this procedure once. Turn the instrument off and disconnect the interfa ce cable if it is connected. Always turn the Model ...

  • Fluke 90100 - page 54

    Model 90100 Operators Manual 5-8 C A U TI O N where Measurement is the value on the 3536 0A TRACKER Displa y, and ICCF and DUCF are defined on page 60 and page 59 respectivel y. Enter the value calculated in Step 2 into the Disp lay Calibration Items screen of the Customization software. Be sure to enter it in the correct co lumn and row. For examp ...

  • Fluke 90100 - page 55

    Customizati on Usage Examples 5 5-9 CAUTION C A U TI O N CHANGING THE ION CHAMBER CALIBRATION FACTOR UNITS This example changes the current value of a factory-set calibration factor. Make a note of the value BEFORE changing it so that it may be set to this value at the end of the example. 1. Press the Page Down key until the Di splay Calibration It ...

  • Fluke 90100 - page 56

    Model 90100 Operators Manual 5-10 5.9 Errors During program operation s, errors may appear. The error me ssages are grouped into input errors, a hardware error, and communication erro rs. INPUT ERRORS Input errors may appear while changing Item values. When these errors occur, pre ss any key to clear the error and enter a different value. After cle ...

  • Fluke 90100 - page 57

    Appendix Using Build-Up A A-1 Appendix A Using Build-Up A.1 Build-Up, Peg, and Retainer Kit Options If you want to use build-up to simulate tissue, you can put plates of either "solid water" or acrylic (optional accessories) secu rely on one or both sides of t he Model 35300A De tector. Build-up pegs and retainer rings for securing the ac ...

  • Fluke 90100 - page 58

    Model 90100 Operators Manual A-2 Recommended build -up for photons is given in T able A-1; recommended build-up for electrons is gi ven in Table A-2. Table A-2 takes into account the 0.56 cm wate r-equivalent inhe rent in the 35300A Detecto r. Cobalt-60 radiation does n ot require any added build-up. Table A-1. Recommended Amount of Build-up to Use ...

  • Fluke 90100 - page 59

    Appendix Using Build-Up A A-3 Table A-2. Recommended Amount of Build-up to Use With the Model 35300A Detector to Attain Electrons d max for Linear Accelerators. 37051C-1 Plates are 0.44 cm Each Nominal Accelerator Potential, MeV Number of build-up plates (37051C-1) "Solid Water" thickness (cm) 2 1 0.5 3 1 0.5 4 1 0.5 5 2 1.0 6 2 1.0 7 3 1 ...

  • Fluke 90100 - page 60

    Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com/rms ...

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