Fluke 90100 manual Definitions

Page 51

Customization

Definitions 5

5.6 Definitions

This section describes all of the Items that may be customized with the Customization software. It is split into two sections matching the two screens.

CUSTOMIZATION ITEMS

Power Down Interval

The power down interval is used to specify the number of minutes the 35360A TRACKER Display remains powered during periods of inactivity. If the 35360A TRACKER Display senses no operator input in the form of a key press, exposure, or RS-232 command for the duration of the power down interval, it will turn itself off. This interval must be in the range of 5 to 255 minutes. An entry of zero will disable the automatic power down feature.

Temperature Units

This Item provides a selection of temperature scales for use on the 35360A TRACKER Display's Air Density screen. The choices are: Celsius, Fahrenheit, and Kelvin.

Pressure Units

This Item provides a selection of pressure scales for use on the 35360A TRACKER Display's Air Density screen. The choices are: millimeters of mercury (Hg), inches of mercury, feet from sea level, meters from sea level, millibars, and hectoPascals.

Optional Message

Text entered for this Item will appear on the bottom line of the 35360A TRACKER Display's Test screen. The Item is limited to a maximum of 20 characters.

Ion Chamber Calibration Units (ICCU)

The Ion Chamber Calibration Units Item defines the units in which the ion chambers in the 35300A Detector were calibrated. The default is roentgens per nanocoulomb.

This means that the Ion Chamber Calibration Factor (ICCF) given on the Display Calibration Items screen MUST be in units of R/nC. Choices for units are roentgens per nanocoulomb, grays per nanocoulomb, sieverts per nanocoulomb, and rads per nanocoulomb.

Display Units

The Display Units Item defines the units in which measurements will be displayed on the 35360A TRACKER Display screen. The choices are roentgens, grays, sieverts, rads, and monitor units. The default is rads.

Display Units Conversion Factor (DUCF)

The 35360A TRACKER Display uses the Display Units Conversion Factor (DUCF) Item to convert the output of the ion chambers (in units defined by the Ion Chamber Calibration Units) to the units required for display (defined by Display Units).

IMPORTANT

You must set the Display Units Conversion Factor correctly and accurately to convert the ion chamber output to displayed units. The default is 0.879 rads/R.

5-5

Page 50 Page 52
Image 51
Page 50 Page 52
Contents Tracker System ModelFluke Biomedical Table of Contents Customization Maintenance and ServiceAppendix a Using Build-Up Theory of OperationIntroduction General InformationModel FeaturesManual Addenda Before You Start Safety PrecautionsSafety Terms SpecificationsIon Chamber Factory Calibration Nominal Ion Chamber CharacteristicsMechanical Specifications Recommended Operation ConditionsElectrometer / A-D Converter Measurements ModeDisplay Mode Model 35360A Tracker DisplayEnvironment High Performance Battery ChargerUnpacking and Inspection Interface Cable Detector to DisplayOptional 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 InstructionsUnits Select PowerReset Test/DetectorPowering 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 SupplyVFD Display Front Panel Switches2 300-VOLT Electronic Bias Supply ProcessorSerial 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 Screen Formats Make a Working DiskConnection to the Computer Starting the Customization SoftwareDisplay Customization Items Screen Appearance F10 Exit F1 Help On-Line Help for using the Customization softwareF2 Edit Item Editing F6 Print Report PrintingDefinitions Ion Chamber Calibration Factor Iccf Setting the Electrometer Gains and OffsetsCharge Gain QG Current Gain, Current Zero IG and ADZElectrometer 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
Top Page Image Contents