Fluke 90100 Using the Units Select Button, Test/Detector Screen 2 Ion Chamber Calibration Factors

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Operation

Operation Instructions 2

Figure 2-9. Test/Detector Screen 2 - Ion Chamber Calibration Factors

Figure 2-10. Test/Detector Screen 3 - Bias and Battery Voltages Plus an Option Text Line

In Figure 2-10, the battery current, "+0.1 A", is displayed to the right of the battery voltage, "6.8 V". A positive current value of up to 2.5 amperes indicates that the battery is being charged from the AC line. As the battery approaches full charge, this current will decrease to near zero. A negative current value will be shown when the instrument is operated from battery power, and indicates the actual current consumption of the instrument.

The battery voltage number displayed is the terminal voltage of the battery. During a charging cycle, the voltage can be anywhere from 5.5 volts to 8.5 volts. After the battery reaches its full charge, the charging circuit switches to trickle charge mode with a corresponding terminal voltage of approximately 7 volts.

The unit will remain in this trickle charge mode as long as the instrument is attached to an AC line. When the instrument is operated with battery power, the voltage will read between 6.5 volts (battery fully charged) and 5.4 volts (low battery shutdown voltage).

2.4.5 Using the UNITS SELECT Button

Pressing the UNITS SELECT button displays the Units Select screen, see Figure 2-11. The "X" cursor points to the currently selected measurement unit. Press the UNITS SELECT button to toggle the "X" cursor between the dose and dose rate measurement units.

Figure 2-11. The Units Select Screen with Dose Measurement Units Selected

The Display Units Conversion Factor (DUCF) is displayed at the bottom of the Units Select screen. The 35360A TRACKER Display uses the DUCF to convert from the detector calibration units to the display units selected during the customization process (see Section 5).

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Contents Tracker System ModelFluke Biomedical Table of Contents Appendix a Using Build-Up Maintenance and ServiceTheory of Operation CustomizationIntroduction General InformationModel FeaturesSafety Terms Before You Start Safety PrecautionsSpecifications Manual AddendaMechanical Specifications Nominal Ion Chamber CharacteristicsRecommended Operation Conditions Ion Chamber Factory CalibrationDisplay Mode Measurements ModeModel 35360A Tracker Display Electrometer / A-D ConverterUnpacking and Inspection High Performance Battery ChargerInterface Cable Detector to Display EnvironmentOptional Equipment Standard System ContentsBlank Rear Panel Familiarization OperationDetector Input Powering the SystemDisplay. Be sure to use the correct end of the cable 3 RS-232 Computer Interface RJ-45 Style Positioning the Model 35300A Detector in the BeamOperation Positioning the Model 353300A Detector in the Beam Front Panel Controls Operation InstructionsReset PowerTest/Detector Units SelectPowering Up the Model 35360A Tracker Display Powering Down the Model 35360A Tracker DisplayUsing the TEST/DETECTOR Button Test/Detector Screen 2 Ion Chamber Calibration Factors Using the Units Select ButtonUsing the Gain Select Button Normal Mode Using the AIR Density ButtonAbsolute Measurements Using the Measure Select Button Normal ModePercent-of-Center Measurements Underranging and Overranging Conditions Battery and Bias Annunciators24. Positions of the Battery and Bias Annunciators Gain Setting ModeAborting the Fpgf Changes Saving the Fpgf ChangesBlank Theory of Operation Hardware Block Diagram of the Model 35360A Tracker Display Power Supply2 300-VOLT Electronic Bias Supply Front Panel SwitchesProcessor VFD DisplaySerial Communications Port ElectrometerMultiplexer and A/D Converter Air Density Corrections Model 35300A Ion Chamber DetectorsBasic Operating Equations Basic Operating Quantities Blank Maintenance & Service Problem TroubleshootingNo Display Flowchart Low battery Yes Annuciator displayed? Low Battery Indication at the Display35360A Tracker Bias Error LoBias or HiBias Indication at the DisplayLeakage Flowchart Dose Rate Measurement Zero Problem Flowchart Line Fuse ReplacementIf fuses continue to blow return instrument for repair Interface Connector Cleaning Cleaning the InstrumentReplaceable Parts Information Recalibration & Repair Information / Technical Assistance Replaceable Parts ListCustomization Connection to the Computer Make a Working DiskStarting the Customization Software Screen FormatsDisplay Customization Items Screen Appearance F2 Edit Item Editing F1 Help On-Line Help for using the Customization softwareF6 Print Report Printing F10 ExitDefinitions Charge Gain QG Setting the Electrometer Gains and OffsetsCurrent Gain, Current Zero IG and ADZ Ion Chamber Calibration Factor IccfElectrometer Charge Gains QG Electrometer Current Gain IGUsage Examples Changing the Power Down IntervalChanging the ION Chamber Calibration Factor Units Input Errors ErrorsBuild-Up, Peg, and Retainer Kit Options Using Build-UpNominal Number of build-up Solid Water Appendix Fluke Biomedical