Fluke 35040 manual Unpacking and Inspection

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General Information

Specifications 1

command, or exposure detection). The automatic power down feature applies only when the instrument is operating from battery power. In addition, all front panel settings are saved as part of the automatic power down sequence.

Internal Electronic High Voltage Ion Chamber Bias Supply

Voltage Range: A maximum of 11 output level settings in the range of -500 V to +500 V may be programmed during user customization. Once programmed, these output levels become available for use and may be selected from either the front panel or via the RS-232 interface.

Level Accuracy: Bias voltage is warranted to be within ± 0.3 V over the full operating temperature range for loads < 0.2 mA.

Internal Verification: The voltage level is continuously measured during operation and compared to the selected setting. A “LoBias” or “HiBias” annunciator is displayed if the measured level differs from the selected setting by more than 1 V.

Capacitive Loading: Maximum ion chamber cable capacitance is 5,000 pF from ground to guard or from guard to center. For a typical 100 pF per meter triaxial cable, the maximum cable length is therefore 50 meters.

Output Current Limit: The output current is limited to < 0.5 mA for operator safety.

General

RS-232 Interface: Single RJ-45 style jack mounted on rear panel. Interface operates at 9600 bps, with 8 bits, no parity, and one stop bit. Xon/Xoff handshaking is employed.

Display: 4 line by 20 character vacuum florescent type.

Environment

Operating: 8°C to 38°C with an absolute humidity of £ 20 g/m3 (the equivalent R.H. is 75% at 25°C, 60% at 30°C, 50% at 35°C).

Storage: -25°C to +65°C. For maximum battery life, always bring the batteries to a level of full charge prior to storage, and maintain the storage temperature at 25°C or below. Under these conditions the batteries should receive an annual maintenance recharge to compensate for the self-discharge effects. Decrease the time interval between maintenance recharges by one-half for each 10°C increase in storage temperature above the 25°C baseline.

Mechanical

Dimensions: 21.6 cm wide x 8.9 cm high x 26 cm deep (10 in. x 9.4 in. x 4 in.).

Weight: 4.5 kg (10 lbs.).

1.7 Unpacking and Inspection

The Model 35040 Therapy Dosimeter was carefully inspected before shipment. Upon receiving the Model 35040 Therapy Dosimeter, carefully unpack all items from the shipping carton and check for any obvious signs of physical damage that might have occurred during shipment. Report any damage to the shipping agent at once. Retain the original packing material in case reshipment becomes necessary. The following items are included with the Model 35040 Therapy Dosimeter:

Standard System Contents

•Model 35040 Therapy Dosimeter

•AC Line Cord – USA (CO-19)

•Customization Software Kit (37886)

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Contents Therapy Dosimeter 35040Fluke Biomedical Table of Contents Addendum Features of Firmware Version 27JAN00 or Later Troubleshooting and ServiceSample Customization Reports Iii Blank Introduction FeaturesIntroduction Safety Symbols And Terms Before You Start Safety PrecautionsOperators Manual Factory Calibration Error Source ± %rdg SpecificationsMaximum Error Manual AddendaFull Scale Range Display Resolution Full Scale Range Display Resolution Noise ± countsTimed Charge Measurements Current MeasurementsEffective Exposure Time Measurements SpecificationsGeneral Measurements High Performance Power Supply and Battery Charger Unpacking and Inspection 35040 Functional Description Hardware Block Diagram of the Model 35040 Therapy DosimeterFront Panel Power SupplyMicroController Serial Communications PortElectrometer Basic Operating EquationsBias Supply Multiplexer and A/D ConverterQExposure Quantity Description Units CommentsQAccum QAccumpreviousLeakage Measurements Charge and Current Measurements= time of electrometer conversion s Timed Charge and Dose Exposure Charge and DosePredicted Timed Charge and Dose Setting ThresholdsAccumulated Charge and Dose Exposure Current and RateDoseRate = I a × Iccf Units/C × Adcf × RateMultiplier s Exposure Time⎝ P Air Density Correction FactorMm Hg = inch Hg x Units Display Minimum Maximum Standard Resolution ErrorSetup SetupFront Panel Familiarization IntroductionRear Panel Familiarization Powering The SystemIon Chamber Connector Power-Up Self-Test and Display MessagesGeneral Considerations Basic Measurement TechniquesMaking Non-Timed Exposure Measurements Timer Use Timer Setup3Making Timed Exposure Measurements Using Other Ion Chambers Battery CareBattery Care PowerOperation Instructions Front Panel ControlsPowering Up the Model 35040 Therapy Dosimeter Using the Test Function Button Powering Down the Model 35040 Therapy DosimeterOperation Instructions QScaleFactor=1.0000 IScaleFactor=1.0000 5Automatic Leakage Compensation 12. The Test Function Screen Showing the Timer SettingsCalibrated by Keithley RMD Nov 15 17. The Test Function Screen Showing the Timer Settings 6Timer SetupUsing the AIR Density Button Using the Detector Select ButtonUsing the Bias Select Button Using the Units Select ButtonSet 300.0 V 100% Central Electrde Pos IC Bias 300.0 V CEP Overranging Conditions Using the RESET/MEASURE ButtonOverrange Conditions Reset ErrorCondition Values Overranged Annunciators Reset Error With Automatic Leakage Compensation EnabledAnnunciators Annunciator ConditionIndicator Measurement Condition Measurement Indicators and Conditions? left of value Condition Overranged MeasurementCustomization Installing/Uninstalling Customization SoftwareConnection to the Computer Starting the Customization SoftwareMenu Items and Controls DownloadingCOM Port Drop Down List Close or File Close Ion ChambersFile Save AS and File Print Edit Special Items OK and Cancel36. The Special Items Menu Calibration Temperature has focus Download and CancelMeasurement Displays Display Line Operators Manual Available Display LinesDisplay Line Group Selection Using the APPEND, DELETE, and Insert ButtonsSelecting an Item and Placing It Changing a Line on a Display38. The Timer Intervals Form Timer Intervals39. The Bias Settings Form Bias SettingsExamples Customizing a Measurement Display Changing the Pressure UnitsAppending a Display Deleting a DisplayErrors Troubleshooting Troubleshooting and ServiceSymptom ??Bias annunciator displayed Symptom Display does not light up when Power is pressedSymptom HiBias annunciator displayed Symptom LoBias annunciator displayedSymptom Configuration Error displayed Symptom Internal Reset Error displayedBit Description Action Do not makeSymptom Dashes displayed instead of digits Symptom Current Overrange DisplayedSymptom Bias voltage measurement changes by one digit Measurements. ReturnExample 299.9 to Display Will Not Light Hours? Is the battery voltage greater than 5.9 volts? Low BatteryGo to Bias ErrorLine Model 35040 Therapy Dosimeter Fuse Replacement Line Fuse ReplacementCleaning The Instrument Interface Connector CleaningReplaceable Parts Information Replaceable Parts List Warranty InformationRecalibration, Repair Information & Technical Assistance Replaceable Parts InformationBlank Sample Documents Sample Customization Reports35040 Appendix Sample Customization Reports 35040 Appendix Sample Customization Reports Blank Overview Introduction New FeaturesTimed Measurements Specifications Update New Features B SetupTimer Use Procedure Timer Setup ProcedureMaking Timed Exposure Measurements Setup B RESET/MEASUREAutomatic Leakage Compensation ADC ALCOperation Instructions B Start NA pA Stop Thres CurrentDecimal Places Timer SetupTable B-2. Measurement Indicators and Conditions Annunciators, Indicators, and Overrange ConditionsTable B-1. Annunciators Condition Overranged Measurement1 Table B-3. Overrange ConditionsTheory of Operation Theory Of OperationConfiguration Error Service Required Error Number Measurement Menu Main MenuMeasurement Displays Figure B-9 shows the Measurement Displays dialog box Table B-4. Available Display Lines Figure B-10. The Timer Intervals dialog box Page Fluke Biomedical
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