Protean Instrument MPC-900 Manual de usuario

Protean

Instrument

Corporation

MPC-900

Gas Flow Detector

Revision 1.2

Protean Instrument Corporation 2

Preface MPC 900

Contents

AboutThisManual........................................................................................................................................8

InstallationOverview....................................................................................................................................9

MPC900Contents....................................................................................................................................9

PreliminaryPreparations..........................................................................................................................9

VisualInspection.......................................................................................................................................9

PreliminaryProcedures...........................................................................................................................10

ConnecttheCountingGas......................................................................................................................11

PrinterTesting.........................................................................................................................................12

ManuallyCountaTestSource................................................................................................................15

PrintandSaveFactoryPlateau...............................................................................................................17

SettingtheCalendar/Clock....................................................................................................................18

InstallationsWithoutAttachedPrinter...................................................................................................18

ReadtheManual.....................................................................................................................................18

MPC900Overview......................................................................................................................................19

MenuDrivenOperation..........................................................................................................................19

PassCodeProtection..............................................................................................................................19

CountFunction........................................................................................................................................19

CalibrationFunction................................................................................................................................19

ControlCharts.........................................................................................................................................19

ProgramFunction...................................................................................................................................20

CountingParameters..............................................................................................................................20

BackgroundParameters..........................................................................................................................20

EfficiencyParameters.............................................................................................................................20

BatteryBackup........................................................................................................................................20

Printer.....................................................................................................................................................21

ComputerConnectivity...........................................................................................................................21

InternationalPowerEntry.......................................................................................................................21

LimitedWarranty....................................................................................................................................21

SampleLoading.......................................................................................................................................22

Protean Instrument Corporation 3

Preface MPC 900

GasFlowControl&Gas‐Pro....................................................................................................................23

TheMPC900Console.............................................................................................................................23

TheRearPanel........................................................................................................................................23

GettingStarted............................................................................................................................................24

CountaSample.......................................................................................................................................24

Step1Define...........................................................................................................................................24

DefineCountingRoutines.......................................................................................................................25

RoutineDefinitionPage1.......................................................................................................................26

RoutineDefinitionPage2.......................................................................................................................27

RoutineDefinitionPage3......................................................................................................................27

RoutineDefinitionPage6.......................................................................................................................28

Step2Calibrate.......................................................................................................................................29

Step3Count............................................................................................................................................31

Review.....................................................................................................................................................33

SetupMenu.................................................................................................................................................34

ScreenUtilities........................................................................................................................................34

CalibratingtheTouchScreen..................................................................................................................34

BacklightBrightness................................................................................................................................35

BeepVolume...........................................................................................................................................35

ProgramMenu............................................................................................................................................36

ImportSettings........................................................................................................................................36

InstrumentParameters...........................................................................................................................37

Printer.....................................................................................................................................................38

GasFlowOption......................................................................................................................................39

SetCalendar/Clock..................................................................................................................................40

SetupPassCodes....................................................................................................................................41

SetInstrumentID....................................................................................................................................42

DefineCountingRoutines.......................................................................................................................42

CountRoutineDefinitionPage1.............................................................................................................43

NamingtheCountRoutine.....................................................................................................................43

Protean Instrument Corporation 4

Preface MPC 900

PresetTime.............................................................................................................................................43

MinimumCountTime.............................................................................................................................44

Repeats...................................................................................................................................................44

PresetCounts..........................................................................................................................................44

SpecifyingtheCountingMode................................................................................................................45

AlphaOnly...........................................................................................................................................45

AlphaandBeta....................................................................................................................................45

ResultsStorage........................................................................................................................................45

SaveResults............................................................................................................................................45

1PageperSample...................................................................................................................................45

AutomaticPrint.......................................................................................................................................

46

CompletingCountRoutineDefinitionPage1.........................................................................................46

CountRoutineDefinitionPage2.............................................................................................................47

CountRoutineDefinitionPage3.............................................................................................................52

CountRoutineDefinitionPage4.............................................................................................................53

CountRoutineDefinitionPage5.............................................................................................................54

CountRoutineDefinitionPage6.............................................................................................................55

CalibrationMenu........................................................................................................................................57

PlateauDetermination

............................................................................................................................58

AcquiringaPlateau.................................................................................................................................59

ViewingaPlateau....................................................................................................................................60

ManualBackground/EfficiencyEntry......................................................................................................61

RadonEfficiencyFactors.........................................................................................................................63

ImportControlChartLimits....................................................................................................................64

PrintAllCalibrationInfo..........................................................................................................................64

ControlCharts.............................................................................................................................................65

AcquiringControlChecks........................................................................................................................66

DataMenu..................................................................................................................................................68

ViewCountRoutineData........................................................................................................................69

RoutineDataView..................................................................................................................................70

Protean Instrument Corporation 5

Preface MPC 900

DisplayOption.........................................................................................................................................71

FullRecordView.....................................................................................................................................71

PageSelection.........................................................................................................................................72

DeleteCountRoutineData.....................................................................................................................73

ViewControlCheckData........................................................................................................................74

BackgroundControlChart.......................................................................................................................74

AlphaControlChart................................................................................................................................76

BetaControlChart..................................................................................................................................78

ExportData.............................................................................................................................................80

DiagnosticsMenu........................................................................................................................................82

Trending..................................................................................................................................................83

AcquiringTrendingData.........................................................................................................................85

PrintingTrendingData............................................................................................................................87

ManualCount.........................................................................................................................................88

TheDataDisplay.....................................................................................................................................89

PrinterTest..............................................................................................................................................90

GuardingAgainstObsolescence.................................................................................................................91

PlateauDataCSVFileFormat.....................................................................................................................92

AlphaControlChartChecksDataCSVFileFormat.....................................................................................93

BetaControlChartChecksDataCSVFileFormat.......................................................................................94

BackgroundControlChartChecksDataCSVFileFormat............................................................................95

SampleDataCSVFileFormat......................................................................................................................96

TrendDataCSVFileFormat........................................................................................................................97

RadonSubtraction....................................................................................................................................100

DeterminationofRadonEfficiencyFactors..........................................................................................101

RoutineCountingwithRadonSubtraction...........................................................................................101

ExternalControl........................................................................................................................................102

ServiceGuideIntroduction.......................................................................................................................103

ThePowerSupplySubsystem...............................................................................................................103

TheLinearElectronicsSubsystem.........................................................................................................103

Protean Instrument Corporation 6

Preface MPC 900

GasFlowSubsystem..............................................................................................................................104

GasTankPrecautions............................................................................................................................104

TheCPUSubsystem..............................................................................................................................105

GeneralInstructions..............................................................................................................................105

CoverRemoval......................................................................................................................................106

CoverInstallation..................................................................................................................................106

RemovingtheSampleDetector............................................................................................................106

InstallingtheSampleDetector..............................................................................................................107

PowerEntry...........................................................................................................................................107

LineVoltageSelection...........................................................................................................................107

CheckingtheLowVoltagePowerSupply(LVPS)...................................................................................108

RemovingLowVoltagePowerSupply..................................................................................................108

InstallingLowVoltagePowerSupply....................................................................................................108

OperatingEnvironment........................................................................................................................109

GeneralElectricalFailures.....................................................................................................................109

BlowsMainFuses..................................................................................................................................109

FailuretoInitializeonPower‐up...........................................................................................................110

IntermittentLockup..............................................................................................................................110

APA‐10‐DandHV‐20‐DStatusIndicators.............................................................................................111

BetaBackgroundisHigh?.....................................................................................................................111

SampleCountsarezero?......................................................................................................................111

PerformanceChanges–Background....................................................................................................111

GasQuality............................................................................................................................................111

Contamination......................................................................................................................................112

ElectronicNoise....................................................................................................................................112

PerformanceChanges–Efficiency........................................................................................................112

Geometry..............................................................................................................................................112

GasQuality............................................................................................................................................112

PlateauSettings....................................................................................................................................113

VariableDefinitionsandEquations...........................................................................................................114

Protean Instrument Corporation 7

Preface MPC 900

ConceptsofAlpha/BetaCounting...........................................................................................................119

TheAlpha/BetaCounter.....................................................................................................................119

GasFilledProportionalDetectors.........................................................................................................119

CountTimeRequirements....................................................................................................................120

LowBackgroundMaterialSelection.....................................................................................................120

BackgroundStability.............................................................................................................................120

AbsoluteCountingEfficiency................................................................................................................121

IntrinsicDetectorEfficiency..................................................................................................................121

CountingGeometryandEfficiency.......................................................................................................121

SampleSelf‐AbsorptionandCountingEfficiency..................................................................................122

CalibratedConversionFactors..............................................................................................................123

TheControlChart..................................................................................................................................123

MPC900OPTIONS....................................................................................................................................124

MPC900SPARES&ACCESSORIES.............................................................................................................124

LIMITEDWARRANTY.................................................................................................................................125



AboutThisManual

This manual provides the information to install, operate, and service the MPC 900

Alpha/Beta Counting instrument. Also included is a brief introduction to fundamental

concepts of alpha/beta counting and instrument architecture. The MPC 900 is a

sophisticated counting instrument that is very easy to use. The operations embedded in

the instrument adapt to almost every alpha / beta counting application. At the same

time, simple counting tasks remain simple, and can be done with the MPC 900 quickly

and easily.

For additional assistance or information contact us at:

Protean Instrument Corporation

231 Sam Rayburn Parkway

Lenoir City, TN 37771

Phone: (865) 717-3456

FAX: (865) 717-3456

www.proteaninstrument.com

WARNING: The power plug for this instrument shall only be inserted in a socket

outlet provided with a protective earth contact. Any interruption of the protective

conductor, inside or outside the instrument is likely to make the instrument

dangerous.

WARNING: Opening the cover of this instrument is likely to expose dangerous

high voltages. Disconnect the instrument from all voltage sources while it is

being opened.

WARNING: Using this instrument in a manner not specified by the manufacturer

may impair the protection provided by the instrument.

Protean Instrument Corporation 9

Installation MPC 900

InstallationOverview

This section is intended to provide guidelines for unpacking and installing your MPC 900

Alpha/Beta Counting instrument. The installation procedures will introduce many of the

diagnostic tools provided by the instrument. The intention is to get all hardware

connected and verified before embarking on the setup and calibration of the instrument.

MPC900Contents

•Instruction Manual and Companion Software

•Power Cord

•Sample Carriers and Control Plates

•Sample Carrier Inserts (Planchet Holders)

PreliminaryPreparations

Before applying power and pressing buttons, there are a few preliminary details to

consider. The instructions that follow assume that the instrument is positioned in its

permanent location in preparation for usage. Allow about six inches in the rear of the

instrument for access for peripheral cables.

VisualInspection

Visually inspect the instrument for any obvious damage. If everything looks in order

proceed with the following tests. The procedures that follow are not intended to cover

detailed calibration and counting operations. The intention is to verify everything is

operable before starting the detailed setup and calibration procedures.

WARNING: If your main power is not USA standard 120 VAC 60Hz, check the

power configuration and fusing before proceeding. Refer to the section titled

Service Guide Introduction.

Protean Instrument Corporation 10

Installation MPC 900

PreliminaryProcedures

•Attach the power cord to the IEC power entry module on the bottom left of the

rear of the instrument. Plug the power cord into the power mains and switch on

the power. The power switch is also located in the power entry module above

the cord.

The display should then show the Top Menu screen seen below.

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