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Manual Fluke 35040

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  • Fluke 35040 - page 1

    35040 Therapy Dosimeter Operators Manual February 2005 Manual No. 37870 Rev. 10 © 2004, 2005 Fluke Corporat i on, All rights reserved . Printed in U .S.A. All product names are trademar ks of their respective companies ...

  • Fluke 35040 - page 2

    Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 1180 1 516.870.0100 www.flukebiomedical.com/rms ...

  • Fluke 35040 - page 3

    i Table of Contents Section 1: General Info rmation ................................................................................... 1-1 1.1 Introduction ............................................................................................................... ............. 1-1 1.2 Features .................................................. ...

  • Fluke 35040 - page 4

    ii 3.9.12 Using the Reset/Measu re Button .................................................................................. 3-17 3.9.13 Overrange Condition s.................................................................................................... 3-17 3.9.14 Reset Error ................................................................... ...

  • Fluke 35040 - page 5

    iii Appendix B: Addendum Features of Firmware Ve rsion “27JAN00” or Later ............. B-1 B.4.5 Reset Error (with Automati c Leakage Compensation Enabled) ......... ............................. B-8 B.4.6 Annuciators, Indicators, and Overrange Co nditions ........................................................ B-9 B.5 Theory of Operation ... ...

  • Fluke 35040 - page 6

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  • Fluke 35040 - page 7

    General Information Introduction 1 1-1 Section 1 General Information 1.1 Introduction The Model 35040 Therapy Dosimeter is designe d for calibration dosimetry of the rapeutic radiation treatment machines includi ng high-energy accelerators, 60 Co, and brach ytherapy equipment. The instrument can be used for calibration, gove rnment co mpliance test ...

  • Fluke 35040 - page 8

    35040 Operators Manual 1-2 WARNING • The ion chamber bias voltage may be set to one of 11 user-customized settings. The display indicates the polarity of the central electrode an d the actual measured output voltage generated by the ion chamber bias supply. • Highly regulated, stable, electr oni c ion chamber bias supply. • The level of the i ...

  • Fluke 35040 - page 9

    General Information Safety Symbols and Terms 1 1-3 CAUTION The heading used in this manual expl ains hazards that could dam age the instrument. Such damage may invali date the warra nty. 1.5 Manual Addenda Any improvements or ch anges concerning the inst ru ment or man ual will be explained in an addendu m included with the manual. Be sure to note ...

  • Fluke 35040 - page 10

    35040 Operators Manual 1-4 Measurement Accuracy: Cha rge measurement accura cy is warranted to be better than ± (0.20%rd g + 2 counts) over the operating temperature range of 18 °C to 28°C for 1 year. Field Calibration: Field cali brations may be perform ed via a restricted distribution MS-DOS Calibration program. This program is available to th ...

  • Fluke 35040 - page 11

    General Information Specifications 1 1-5 1.0000 μ A 0.0001 μ A Measurement Method: Average current measurement is derived by monitoring t he charge integrated over the time interval beginning 1.33 second s after the detection of the start of the exposure, an d ending 1.33 seconds prior to the detection of th e end of the exposure. Dividing the ch ...

  • Fluke 35040 - page 12

    35040 Operators Manual 1-6 0.10% 0.10%] 5 Period [ Error Charge Observed + × ≤ and 0.15% 0.10%] 5 Period [ Error Current Observed + × ≤ where “Period” is the time interval in ye ars between calibrations. Gain Temperature Stability: The maximum temperature effect is less than ± 0. 05%rdg for both charge and current measurements over opera ...

  • Fluke 35040 - page 13

    General Information Specifications 1 1-7 command, or exposure detection ). The automatic po wer down feature applies o nly when the instrument is operating from battery power. In addition, all fr ont panel settings are saved a s part of the automatic power down sequence. Internal Electronic High Voltage Ion Chamber Bias Supply Voltage Range: A maxi ...

  • Fluke 35040 - page 14

    35040 Operators Manual 1-8 - CD, 35040 Standard Customization (37870CD) - 9-pin connect or adaptor (37616) - 7 foot RJ-45 Cable (105-260) ...

  • Fluke 35040 - page 15

    Theory of Operation Introduction 2 2-1 Section 2 Theory of Operation 2.1 Introduction The Model 35040 Therapy Dosimeter is a radiati on measurement instrument intended for u se in calibration procedures for hig h-energy ac celerators , 60 Co, and brachytherapy. Basi c theory of operation of the instrument is explained in the following paragraphs. F ...

  • Fluke 35040 - page 16

    35040 Operators Manual 2-2 2.2.1 Power Supply During operation, the instrument ma y be powered by line voltage in the range of 100 to 240 VAC or from the internal 6 volt sealed lead acid battery for up to 8 hours. The po wer supply consi sts of a high performance charger that continuous ly charges the ba ttery whenever t he instrument is plugge d i ...

  • Fluke 35040 - page 17

    Theory of Operation Functional Description 2 2-3 2.2.5 Electrometer The electrometer is a singl e range, resettable, integr ating amplifier. The high speed solid state reset is activated either by the operato r pressing the RESET/MEASURE button or automatically when the instrument detects the end of an exposure. Errors resulting from temperatur e d ...

  • Fluke 35040 - page 18

    35040 Operators Manual 2-4 Table 2-1. Description of Quantities Quantity Description Units Comments ADCF Air Density Correction Factor None Calculated by instrument and dep ends on front panel Temperature and Pressure settings. QExposure Charge during exposure C Electrical charge delivered to readout in respo nse to radiation incident upo n detecto ...

  • Fluke 35040 - page 19

    Theory of Operation Basic Operating Equatio ns 2 2-5 Charge and Current Measurements The instrument’s electrom eter char ge and current measurements are fa ct ory calibrated to a United States National Institute for Standards and Technology (NIST) traceable standa rd. Governing regulatory agencies or best of practice protocol s may require that t ...

  • Fluke 35040 - page 20

    35040 Operators Manual 2-6 Figure 2-2. Leakage Cu rrent and Start of Exposure When automatic exposure detection is disabled (sta rt and stop threshold set to 0.0 pA), there is no correction for extrapolated charge due to leakage cu rrent. The dosimeter must b e manually reset between exposure s and the leakage current kept as l ow as possible for b ...

  • Fluke 35040 - page 21

    Theory of Operation Basic Operating Equatio ns 2 2-7 Q 1 represents the next sample of charg e at time T 1 following the activation of the timer. Q 2 corresponds to the interpolated charge at time T 2 , where T 2 is an integral num ber of seconds that is restricte d to times within the range: T 1 < T 2 ≤ ( T 1 + Timer Interval Setting ). Predi ...

  • Fluke 35040 - page 22

    35040 Operators Manual 2-8 or dielectric absorptio n. The start and stop thresh olds are set independently, but the stop threshold must be less than the start threshold. The thresholds are se ttable in 0.1 pA increments from 0.0 pA to 9.9 pA. In some test setups, it may be necessary to rai se the thresholds to reliably detect an exposure in the pre ...

  • Fluke 35040 - page 23

    Theory of Operation Basic Operating Equatio ns 2 2-9 Figure 2-3. Average Current and Exposu re Time 2.3.3 Air Density Correction Factor The air density correction factor is used to corr ect dose and dose rate measurements for a vented ion chamber. where the pressure “P” is expressed in mmHg, t he temperature “T” is in Kelvin, and the calibr ...

  • Fluke 35040 - page 24

    35040 Operators Manual 2-10 Table 2-2. Air Density Adjustme nt Ranges and Resolutions Units Display Minimum Maximum Standard Resolution % Error * inches of mercury inHg 20.55 31.30 29.90 0.05 0.12 millimeters of mercur y mmHg 522 795 760 1.0 0.10 altitude in feet ft -1200 10,000 0 25 0.07 altitude in meters m -360 3050 0 10 0.09 millibars mbar 697 ...

  • Fluke 35040 - page 25

    Operation Setup 3 3-1 Section 3 Operation 3.1 Setup Introduction This section contains set-u p and connection proc edures for the Model 35040 Th erapy Dosimeter. The instrument is factory calibrated to measure charg e (Coulombs) and curr ent (Amperes). It is recommended that the use r customize the Model 35040 Therapy D osimeter prior to its first ...

  • Fluke 35040 - page 26

    35040 Operators Manual 3-2 3.3 Rear Panel Familiarization Figure 3-2. The Model 35040 Ther apy Dosimeter Rear Panel RS-232 Receptacle (RJ-45 Style): Th e RS-232 Computer Interface is used for computer controll ed factory test, for calibration, for customizat ion, and for remote control/data acquisition. AC Line Power Receptacl e: The AC line input ...

  • Fluke 35040 - page 27

    Operation Powering the System 3 3-3 The Model 35040 Therapy Dosimeter operates on batter y power for eight hours after a full charge. The dosimeter can be re charged quickly, usually in two to three hours, eve n during instrument operation. A low battery annunciator is displayed when 30 minutes or less of operation remains. Wh en the battery pack i ...

  • Fluke 35040 - page 28

    35040 Operators Manual 3-4 Mating and unmating to this connector (or to the other end of a cable already con nected to it) should be done only when the bias is set to 0 volts, or when the instrument power is turned off. The central pin and inner shield shell of the triaxial connector are operated at the bias voltage ab ove the outer shell and instr ...

  • Fluke 35040 - page 29

    Operation Basic Measurement Technique s 3 3-5 Procedure: • The annunciator line on the Measurement screen di splays "WAIT System Not RDY" while the instrument is acquiring the minimum n umber of sa mples required for leakage co mpensation. Wait for this message to disappear. • Wait for the leakage current to return to the nominal valu ...

  • Fluke 35040 - page 30

    35040 Operators Manual 3-6 Use the predicted timed charge or dose measurement to diagnose a problem at the onset of a timed measurement for sources that deliver at a constant exposure rate. If the predicted timed measurement is drastically different from the expected value, there is no reason to wait for the complete timer interval to expire before ...

  • Fluke 35040 - page 31

    Operation Battery Care 3 3-7 instrument will not be available for use. Dep ending upon the le vel of discharge, this period of unavailability may be on the order of days, and in extr eme cases the battery will be permanently damaged. 3.9 Operation Instructions This section contains detailed inst ructions on t he front panel operati on of the Model ...

  • Fluke 35040 - page 32

    35040 Operators Manual 3-8 and bias voltages, automatic leakage compensation settings, and timer settings. • When the Test Function screen is displayed, pr es sing the TEST FUNCTION button displays a cursor that allows modificat ion of the following settings: - Enabling or disabling auto matic leakage compensa ti on or setting of the start and st ...

  • Fluke 35040 - page 33

    Operation Operation Instructions 3 3-9 When attempting to turn the instrument on, firmly press the POWER button and hold for approximately one second. Always allow several seconds between retries. During this self-test period, the Model 3 5040 Therapy Dosimeter displays a sequ ence of screens. The first screen to appear after pre ssing the POWER bu ...

  • Fluke 35040 - page 34

    35040 Operators Manual 3-10 Figure 3-8 shows the ion chamber bias voltage (IC Bias), the sy stem leakage cu rrent (Leakage), and the battery voltage and current. The bias voltage sh own is 300.0 volts. The central electrode is positive (CEP). The leakage current is 0.001 pi coamps. The batte ry current is a small positive number, thus the battery i ...

  • Fluke 35040 - page 35

    Operation Operation Instructions 3 3-11 Figure 3-11. The Test Function Screen Showing the Automatic Leakage Compensation Settings Figure 3-12 displays the settings for the timer interval , count mode, and decimal places. Refer to Section 3.9.6 for details. Figure 3-12. The Test Function Screen Showing the Timer Settings Figure 3-13 shows the displa ...

  • Fluke 35040 - page 36

    35040 Operators Manual 3-12 With the automatic leakage compen sation settings di splayed (Figu re 3-14), press the TEST FUNCTION button. The " f " cursor will appear to the left of the AL C annunciat or. Use the UP and DOWN arrow buttons to toggle the setting between on (ALC) and of f (OFF). With automatic leakage compen sation enabled, p ...

  • Fluke 35040 - page 37

    Operation Operation Instructions 3 3-13 3.9.6 Timer Setup The Test Function screen provides for configuring th e timer interval, count mode, and decimal places (see Figure 3-17). With the timer settings displayed, pre ss the TEST FUNCTION button. The " f " cursor will appear to the left of the timer interval setting. Use the UP and DO WN ...

  • Fluke 35040 - page 38

    35040 Operators Manual 3-14 3.9.8 Using the DETECTOR SELECT Button Pressing the DETECTOR SELECT button displays th e De tector Select screen, see Figure 3-18. This screen displays informatio n about the selected ion chambe r calibration factor. An ion chamber consist s of two text lines and an ion chamber cali bration factor (I CCF) with units. All ...

  • Fluke 35040 - page 39

    Operation Operation Instructions 3 3-15 Figure 3-20. The Air Density Screen With Air Density Corrections Disabled Air density correction is onl y applied to dose or dose rate measurements such as, Roentgens, rads, Grays, Sieverts, etc. These measures are de pendent on correctly compen sating for the mass of air in the ion chamber. Electrical units ...

  • Fluke 35040 - page 40

    35040 Operators Manual 3-16 Figure 3-23. The Bias Select Screen With the Bias Set to a Positive Voltage Figure 3-24. The Bias Select Screen With the Bias Turned Off Figure 3-25. The Bias Select Screen With the Bias Set to a Negative Voltage In the example of Figures 3-23 to 3-25, the maximu m voltag e setting is 300.0 V. Thus, 300.0 V is 100% of 30 ...

  • Fluke 35040 - page 41

    Operation Operation Instructions 3 3-17 3.9.12 Using the RESET/MEASURE Button The RESET/MEASURE button has dual functionality. If no Measurement screen is displayed, pressing the RESET / MEASURE button displays one. When a Me asurement Screen is di splayed, pr essing the RESET/MEASURE button zeroes all measurement readings and causes the Model 3504 ...

  • Fluke 35040 - page 42

    35040 Operators Manual 3-18 Figure 3-28. The Measurement Screen With the Charge and Current Limits Exceed ed After the First 60 Seconds Figure 3-29. The Measurement Overrange Screen Table 3-1 specifies the conditions that cause the Model 3504 0 Therapy Dosimeter to display the overrange indicator for a m easurement. Table 3-1. Overrange Conditions ...

  • Fluke 35040 - page 43

    Operation Operation Instructions 3 3-19 A reset error will not occur for ion chambers calibrated in dose rate units (i.e. Brac hytherapy chambers) since the measurement is prima rily concerned with am ps or dose rate. 3.9.15 Reset Error (With Automatic Leakage Compensation Enabled) The following discussion is only applicable whe n automatic leakage ...

  • Fluke 35040 - page 44

    35040 Operators Manual 3-20 Figure 3-32. Annunciator positions Table 3-2 lists the indicators the in strument uses to signal that a measur ement quantity ha s not been compensated for leakage o r is not available due to the specified condition. Table 3-2. Measurement Indicators and Conditions Indicator Measurement Condition ? (left of value) All No ...

  • Fluke 35040 - page 45

    Operation Customization 3 3-21 3.10 Customization 3.10.1 Introduction The Model 35040 Therapy Dosimeter is shipped with valid settings allowing you to make measurem ents immediately. Should the need arise to change or modify an y of the items described below, the Customization software pr ovides for customizing the Model 35 040 Therapy Dosimeter to ...

  • Fluke 35040 - page 46

    35040 Operators Manual 3-22 35040 Customization Softwa re, verify that COM PO RT indicator is green, and click on the UPLOAD button. We recommend that you print a copy of the customi z ation report (Print) as your first step in the customization process. Thi s report contains all of the customization values and thus serves a s a guide for returning ...

  • Fluke 35040 - page 47

    Operation Customization 3 3-23 CONNECT Select CONNECT to force an initialization the computer ’s se rial port for use with the 35040 Customi zation Software. Normally initialization is done automati cally at the start of the 35040 Customization Software or by selecting the serial port from the Com Port drop down list. UPLOAD Select UPLOAD to requ ...

  • Fluke 35040 - page 48

    35040 Operators Manual 3-24 Figure 3-34. The Ion Chambers Form EDIT To modify existing ion chamber parame ters, click twice with the mouse on a title within the Ion Chamb er List Box. A form titled “Program Ion Chamber” appe ars with the parameters of the sele cted Ion Chamber and two buttons: OK and CANCEL. Refer to Figure 3 -35. The following ...

  • Fluke 35040 - page 49

    Operation Customization 3 3-25 OK and CANCEL When you complete your editing of ion chamb er parameters, you may use OK or CA NCEL to exit the Parameter Editor. If you select CANCEL, all modifi cations are discarded and the origi nal parameter settings of the ion chamber rem ain. If you select OK, the ion chamber paramete rs (modified or not) are se ...

  • Fluke 35040 - page 50

    35040 Operators Manual 3-26 Figure 3-36. The Special Items Menu (Calibration Temperature has focus) To modify the Power Down Interval o r Optional Text, click on the desired text box and type in the new te xt from the keyboard. To select the Calibration Tempe rature, or different Temperature or Pressure Units, click on the DO WN arrow key and selec ...

  • Fluke 35040 - page 51

    Operation Customization 3 3-27 3.10.9 Measurement Displays The Model 35040 Therapy Dosimeter can contain up to sixte en (16) measurement displays, which are viewed from the Measurement Displays Form. With this form you may custom ize the appe arance of any of the measurement displays. All screens must show an Annun ciators Status Line (see Section ...

  • Fluke 35040 - page 52

    35040 Operators Manual 3-28 Table 3-4. Available Di splay Lines Display Line Group Title Appearance (on a Measurement Displa y) Blank Line Air Density Setting ADCF = -.--- Temperature Pressure --.- C ---- h Pa Bias Setting Set: >+---.- V +---% Firmware Revision FW Rev: 15OCT92 A Time Interval Setting Interval: ---- s IC Calibration Factor ICCF = ...

  • Fluke 35040 - page 53

    Operation Customization 3 3-29 Display Line Group Selection Click on the Group’s DO WN arrow key and select anothe r group from the drop down list by clicki ng on it. Each group on the drop down list will bring up a di fferent Display Line List. Refer to Table 3-4. Selecting an Item and Placing It Use the mouse to move an item from the Display Li ...

  • Fluke 35040 - page 54

    35040 Operators Manual 3-30 Upon completing the insertion, the Customization software tells the Model 35040 Therapy Dosimeter to insert the Display you specified. Initially, the inserted Display has two Blank Line s and a Charge measurement. 3.10.10 Timer Intervals The Model 35040 Therapy Dosimeter can contain up to twenty (20) timer interval setti ...

  • Fluke 35040 - page 55

    Operation Customization 3 3-31 The Model 35040 Therapy Dosimeter displays the timer intervals in the same order they are entered. That is, it does not sort the timer interval settings. The UP arr ow key displays t he timer interval set tings in an increasing interval number o rder (e.g., Interval 1 , Interval 2 … Interval 20 ), while the DOWN arr ...

  • Fluke 35040 - page 56

    35040 Operators Manual 3-32 When you press Bias Select on the Model 3504 0 Ther apy Dosimeter front panel, the UP & DOWN ke ys allow you to select the bias settings in the order you entered them in the Bias Se ttings dialog box. 3.10.12 Examples The following examples describ e many f unctions of the Customization program. Editing an Ion Chambe ...

  • Fluke 35040 - page 57

    Operation Customization 3 3-33 1. Clicking on the Power Do wn Interv al places the input focus there. 2. Keyboard: Enter 15 into the Edit Box. 2. Click on DOWNLOAD. The Cu stomization software downloads the new Power Down Interval to the model 35040 Therapy Dosi meter. Changing the Pressure Units To change the Pressure Units, sele ct Special Item s ...

  • Fluke 35040 - page 58

    35040 Operators Manual 3-34 2. The Customization software prompt s you to enter a Display number ahe ad of which to insert a new Display. Type 3 and press ENTER. The Customization software insert s a new Display ahead of Display 3. The Customi zation software downloads the insert opera tion to the instrument. The new Display contains two Blank Li n ...

  • Fluke 35040 - page 59

    Troubleshooting and Service Introduction 4 4-1 Section 4 Troubleshooting and Service The Model 35040 Therapy Dosimeter contains no internal operator serviceable parts. Disassembly of the unit could result in electrical shock. Always select 0 volts bias or turn off the Model 35040 Therapy Dosimeter prior to connecting or disconnecting the ion chambe ...

  • Fluke 35040 - page 60

    35040 Operators Manual 4-2 The decision trees of the seco nd part are presented in text format. To use the d ecision tree, start with statement number 1. The text may state one o r more actions to be completed followed by a question. Choose the most appropriate answe r. Use the number after the ans wer to find the next statement. Eventually, you wi ...

  • Fluke 35040 - page 61

    Troubleshooting and Service Troubleshooting 4 4-3 Explanation: The low battery annu nciator is a remi nder that while running o n the battery, there is a finite amount of energy available. For the battery in this instrument and the en ergy consumption of the instrument, when the batte ry voltage drops below 5.9 volts there i s less than 30 minutes ...

  • Fluke 35040 - page 62

    35040 Operators Manual 4-4 7 Additional operator settings are invalid. Select the proper settings from the front panel. 8 Timer interval customization settings are invalid. Reinstall settings using the Customization software. 9 Additional calibration settings are invalid. Do NOT make measurements. Return instrument for repair. Explanation: The inst ...

  • Fluke 35040 - page 63

    Troubleshooting and Service Troubleshooting 4 4-5 Example: 299.9 to 300.0 Cause: Rounding error in meas urement. Action: None. Explanation: The bias voltage is not actually changing . The control for the bias is in discrete steps. The measurement is also in discrete ste ps. The control program may select a setting that causes the measurement to be ...

  • Fluke 35040 - page 64

    35040 Operators Manual 4-6 4.3 Display Will Not Light Go to line: 1. Is the instrum ent connected to line voltage? YES NO 2 4 2. Disco nnect the line cord. Check the fu se. (See Section 4.6.) Is the fuse filament intact? YES NO 3 11 3. Attach kn own operational appliance to outlet. Does the appliance wo rk? YES NO 4 12 4. Connect instrument to AC l ...

  • Fluke 35040 - page 65

    Troubleshooting and Service Low Battery 4 4-7 4.4 Low Battery Go to line: 1. Is the instrum ent connected to line volt age? Is the instrument connected to line voltage? YES NO 2 6 2. Turn the instrument off. Wait a few seconds. Turn the instrument on. A sequence of screen s will appear. On the last screen, the battery voltage and current are displa ...

  • Fluke 35040 - page 66

    35040 Operators Manual 4-8 4.5 Bias Error Go to line: 1. Is "??Bias" displayed? YES NO 2 6 2. Has the instrument been o n for more than one minute? YES NO 3 8 3. Turn off the power. Wait 10 seconds. Turn on the power. Wait 1 minute. Is "??Bias" displayed? YES NO 4 -- 4. PROBLEM: Electrometer fault. See Section 4.10. YES NO 5 -- ...

  • Fluke 35040 - page 67

    Troubleshooting and Service Line Fuse Replacem ent 4 4-9 4.6 Line Fuse Replacement Disconnect the Model 35040 Therapy Dosimeter from other equipment along with the AC line power and turn off power before continuing with this section. 1. Position the instrument on its display fa ce. Figure 4-1. Model 35040 Therapy Dosimeter Fu se Replacement 2. Remo ...

  • Fluke 35040 - page 68

    35040 Operators Manual 4-10 If fuses continue to fail - return the instrument for repair. 4.7 Interface Connector Cleaning Select 0.0 V bias setting AND turn off the Model 35040 Therapy Dosimeter 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 ...

  • Fluke 35040 - page 69

    Troubleshooting and Service Replaceable Parts Information 4 4-11 Table 4-1. Replaceable Parts List 4.10 Recalibration, Repair Information & Technical Assistance If your instrument needs recalibration o r repair, we request that you contact Fluke Biomedical at 440.248.9300. More information concerni ng the operation, application, or servi ce of ...

  • Fluke 35040 - page 70

    35040 Operators Manual (Blank Page) ...

  • Fluke 35040 - page 71

    Appendix Sample Customization Reports A A-1 Appendix A Sample Customization Reports A.1 Sample Documents This section contains sample docume n ts that the Customization Software can produce. It produced these documents on a HP LaserJet ® All of them contain the header “35040 THERAPY DOSIMETER”. ...

  • Fluke 35040 - page 72

    35040 Operators Manual A-2 ...

  • Fluke 35040 - page 73

    Appendix Sample Customization Reports A A-3 ...

  • Fluke 35040 - page 74

    35040 Operators Manual A-4 ...

  • Fluke 35040 - page 75

    Appendix Sample Customization Reports A A-5 ...

  • Fluke 35040 - page 76

    35040 Operators Manual (Blank page) ...

  • Fluke 35040 - page 77

    Appendix Features of Firmware Version “27 JAN00” or Later B B-1 Appendix B Features of Firmware Version”27JAN00” or Later B.1 Introduction This addendum updates inf ormation provided in the Model 35040 Therapy Do simeter Instruction Manual . Particularly, the instrument now supp orts a measur ement timer and extended charge and current rang ...

  • Fluke 35040 - page 78

    35040 Operators Manual B-2 Refer to the following sections for detail s on the timed measurements: • Section B.3.2, Making Timed Exposure Mea suremen ts, presents an overvie w on configuring and using the timer. • Section B.4.1, Front Panel Controls: RESET/MEASU RE, discusses how to start and stop the timer as well as zero measurements. • Sec ...

  • Fluke 35040 - page 79

    Appendix New Features B B-3 1.000 μ A 0.001 μ A 1 Average Current Measurements Range and Resolution: Full Scale Range Display Resolution 200.00 pA 0.01 pA 2.0000 nA 0.0001 nA 20.000 nA 0.001 nA 200.00 nA 0.01 nA 1.0000 μ A 0.0001 μ A Effective Exposure Time Measurements Range and Resolution: Full Scale Range Seconds Hours/Minutes/Seconds Displa ...

  • Fluke 35040 - page 80

    35040 Operators Manual B-4 Procedure • The annunciator line on the Measurement screen di splays "WAIT System Not RDY" while the instrument is acquiring the minimum n umber of sa mples required for leakage co mpensation. Wait for this message to disappear. • Wait for the leakage current to return to the nominal value. • Make the expo ...

  • Fluke 35040 - page 81

    Appendix Setup B B-5 a timed measurement for sources that deliver at a constant exposure rate. If the predicted timed measurement is drastically different from the expected value, there is no reason to wait for the complete timer interval to expire before investigating the cause of the discrepancy. To differentiate the predicted and non-predicted t ...

  • Fluke 35040 - page 82

    35040 Operators Manual B-6 Interval: 60 s Count: UP Decimal Places: 0 ADC ALC B.4.2 Using the Test Function Button Figure B.1 shows the automatic leakage com pensation settings, which consi st of the ALC status, start and stop threshold current s, and the instantaneous cu rrent measureme nt. Refer to Section B.4.3 for details. Figure B-1. The Test ...

  • Fluke 35040 - page 83

    Appendix Operation Instructions B B-7 the instrument will cease updating the exposu re m easurements when the current drops bel ow the stop threshold and will return to measuring leakage. The instrument uses the start and stop threshold settings to sense when an exposure is in progress. With the automatic leakage compen sation settings displayed (F ...

  • Fluke 35040 - page 84

    35040 Operators Manual B-8 B.4.4 Timer Setup The Test Function screen provides for configuring th e timer interval, count mode, and decimal places (see Figure B-6). With the timer settings displayed, pre ss the TEST FUNCTION button. The " " cursor will appear to the left of the timer interval setting. Use the UP and DO WN a rrow buttons t ...

  • Fluke 35040 - page 85

    Appendix Operation Instructions B B-9 B.4.6 Annunciators, Indica tors, and Overrange Conditions Table B-1 specifies the annunciato rs that may appear on the top line of the disp lay. Table B-1. Annunciators Annunciator Condition ??Bias No bias measurement possible since the electrometer is not read y ADC Air density correction in us e (only applica ...

  • Fluke 35040 - page 86

    35040 Operators Manual B-10 Table B-3 specifies the condition s that cause the Model 35040 Th erapy Dosimeter to displa y an overrange indicator (OVER) for a mea surement quantity. Table B-3. Overrange Conditions Condition Overranged Measurement 1 charge > 19.999 m C charge average current accumulated charge effective exposure time accumulated c ...

  • Fluke 35040 - page 87

    Appendix Theory of Operation B B-11 B.5 Theory Of Operation Basic Operating Equations Quantity Description Units Comments Q Timed Timed Charge C The electrical charge delivere d during the timer interval. Q Timed_Predicted Predicted Timed Charge C The total amount of timed charge that should be accumulated at the completion of the timer interval, b ...

  • Fluke 35040 - page 88

    35040 Operators Manual B-12 B.6 Troubleshooting This section outlines steps t hat the operator may take to identify and correct pro blems. Symptom: "Configuration Error" displa yed. Cause: The instrument has lost the calibratio n or customization data. Action: Convert the configuration error number to a bina ry value usin g a program such ...

  • Fluke 35040 - page 89

    Appendix Operation Instructions B B-13 Cause: The input current has ex ceeded the 1.200 uA limit. Action: Stop the exposure. Change the setup to reduce the current. Explanation: The instrument has a 1.00 0 uA limit on me asurable current and will continue to measure charge for currents up to 1 .200 uA. The instrument can accept an input curr ent up ...

  • Fluke 35040 - page 90

    35040 Operators Manual B-14 Figure B-9 shows the Measur ement Displa ys dialog box. Figure B-9. The Measurement Displays Dial og Box (shown with the rotating rack ha ving focus) The display lines a re grouped within the Rotating Rack a c cording to their function. The grou ps consist of “Configuration,” “Amps, Coulombs, Volt s,” “Do se, R ...

  • Fluke 35040 - page 91

    Appendix Customization B B-15 Table B-4. Available Displ ay Lines Display Line Group (on the Rotating Ra ck) Title (on the Rotating Ra ck) Appearance (on a Measurement Displ ay) Blank Line Air Density Setting ADCF = -.--- Temperature Pressu re --.- C ---- hPa Bias Setting Set: >+---.- V +---% Firmware Revision FW Rev: 15OCT92 A Time Interval Set ...

  • Fluke 35040 - page 92

    35040 Operators Manual B-16 Figure B-10. The Timer Intervals dialog box Select a field by pressing T AB until it is highlighted, or click on it with the mouse. Enter an integral number of seconds for the timer interval setting. Wh en you select OK, the Cu stomization software send s the timer interval settings to the instrument and retu rns the pro ...

  • Fluke 35040 - page 93

    ...

  • Fluke 35040 - page 94

    Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 1180 1 516.870.0100 www.flukebiomedical.com/rms ...

Manufacturer Fluke Category Light Therapy Device

Documents that we receive from a manufacturer of a Fluke 35040 can be divided into several groups. They are, among others:
- Fluke technical drawings
- 35040 manuals
- Fluke product data sheets
- information booklets
- or energy labels Fluke 35040
All of them are important, but the most important information from the point of view of use of the device are in the user manual Fluke 35040.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Fluke 35040, service manual, brief instructions and user manuals Fluke 35040. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Fluke 35040.

Similar manuals

A complete manual for the device Fluke 35040, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Fluke 35040 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Fluke 35040.

A complete Fluke manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Fluke 35040 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Fluke 35040, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Fluke 35040, that we can find in the current document
3. Tips how to use the basic functions of the device Fluke 35040 - which should help us in our first steps of using Fluke 35040
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Fluke 35040
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Fluke 35040 in a specific country, if it was not possible to solve the problem on our own.

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