GUILIN SENJIE Technology SJ300 User manual

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Pleasekeepmanualproperly.
Beforeusingourequipment
pleasereadtheinstruction
manualseriously.
GUILIN SENJIE Technology Co.,Ltd.
E-mail:[email protected]
http://www.pf-bst.com/
TEL:[phone] FAX:[phone]
Digetal Guassmeter
Manual
SJ300

Introduction Introduction Introduction Introduction
TheTelemetersisaspecialinstrumentusedforinspecting&checkingflux
density,whichisalsooneofthemostuniversallydevicesinthefieldofmagnetic
measurement.
ModelBST200hdigitalTelemetersiscontrolledbytheSCM,whichissuitable
for
handleoperation.ItcanbeusedtomeasureDCmagneticfieldandfluxdensity.
Thedevicecanbecarriedonone
’ sperson.Itischaracterizedbyitswidemeasuring
range,simpleoperationandcleardisplay.Itisstilladdedwiththefunctionof
maintenancesuchasholdingMeasureValue/PeakValue,AsmTorGsunitofdisplay
canbechangeover,Measuringrangeof200mTor2000mTcanbechose,andothers
thatasresettingzerobykeyandsoon.Thepowerisonepieceofbattery 9V. Itcanbe
usedcontinuallyabout20hours.
RealityWorkingDomain:
1)Magneticfielddistributionofmaterialsurface
2)Workingmagneticfieldproducedfrosomeinstrumentthatasiron-removingdevice,
magnet-selectingmachine,magnetchuck,magnetspoolanddemagnetizingcoil
3)LeakageMagneticiron-surface
4)Magneticfieldwithinthestructureofthegap
avoidcondensation.
15Neverplacetheinstrumentinclosethemachinegeneratingstrongmagneticfield,
suchasmagnet-charger,demagnetizecoil,microwaveoven,electricwelding
equipmentelectricmotorandetc.
16Inconclusion,wesuggestyoutocalibratetheinstrumentintime.
Whole Whole Whole WholeSet Set Set Setof of of ofthe the the theInstrument: Instrument: Instrument: Instrument:
1.ModelBST200HDigitalGauss
meter
1pcs
2.Instructionforuse1pcs
3.ProduceCertificate1pcs
4.Probe1pcs
5.Battery1pcs
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4.Theinstrumentisguaranteedtokeepingoodrepairfor12monthsexceptthe
probe.
5.Donotusetheinstrumentininappropriateconditions.
6.Ifyoufindthevalueoftestingwereerrorinthestatusofmeasurement,youcould
loosenthehandleoftheprobetoadjustthescrewoftheresistancetinily.Ifdon’t
ensurethattheinstrumentisoperatedcorrectlydescribedbelow,therewouldbe
errororMistake.
7Don’tattempttorepair,ordisassemble,andanyreconstructthisinstrument.
8Useonlyrecommendedpoweraccessories.
9Don’tconnecttheterminalsoftheouterpowersupplyreversely.theinnerisplus,
theouterisMinus.
10Don’tdropthisinstrumentortheprobedownground.It’llbedamagedbystrong
vibration.
11 Donotallowhandsorotherobjectswithdirttotouchtheprobe.
12Avoidusing,placingorstoringtheinstrumentinplacessubjecttostrongsunlightor
hightemperature,soastohumidity,water,oil,rustair,vibrationandothers.
13Itwouldbeusedtotemperaturerangeorstoreupneedtocomplyasappointment.
14 You shouldnotmovingtheinstrumentrapidlybetweenhotandcoldtemperatureto
Working Working Working WorkingPrinciple Principle Principle Principle
ThisseriesofinstrumentsusesensorswhicharemadeaccordingtoHallEffect.
Thecircuitadoptsprecisionconstantcurrentsource,amplifierwithlowdriftandhigh
stabilitypowersupply.ItiscontrolledbytheSCM.Finallymeasuredvalueisdisplayed
bydigitalvoltmeterwitha4½LED.
1)PrincipleofHallEFFECT
Whenplacingthesemiconductorcarryingcurrentinthemagneticfield
axialtothecurrentdirection,thesemiconductorwillgeneratetransverse
galvanomagneticphenomenon,namelygenerateelectromotiveforceinthe
directionaxialtothemagneticfieldandcurrent,whichisHallEffect.Hall
Effectcanbeexplainedwithclassicalgalvanomagnetictheory.Generally,Hall
voltageUHisexpressedas:
UH=RHIB0/d=RHIIB0
Ofwhich:d—thethicknessoftheHalldevice
RH—Hallconstant
RHI=RH/d—ConstantoftheHalldevice
2
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I—CurrentintensitypassingthroughtheHalldevice
B0—Themeasuredmagneticinductionintensity
Itcanbeseenfromtheformula:ForacertainHalldevice,themagneticfieldB0
canbeindirectlymeasuredthroughmeasuringtheHalldeviceifonlythe
passingcurrentIisconstant.Sinceitcancountcontinuouslyandlinearlywith
simplemethodandlongservicelifewhenmeasuringthemagneticfieldwith
HallEffectandcanmeasurethemagneticfieldofsmallspaceandsmallgap,
HallEffectMethodhasbecomeoneimportantmethodamongmagneticfield
measurements.
2)ThatMethodofOperationoftheSensor
Note:Thesensitiveelementsofthemagneticfieldarelocatedatthefront
endoftheprobe.Forsurfacemagneticfieldmeasurement,thesidewithout
scaleofthetransverseprobeshallbeusedtocontactthemagnetsurface
andthefrontendsideoftheaxialprobeshallbeusedtocontactthemagnet
newpeakvalueandtheforecastvaluewillbelowerforecast.Thusyoucouldpress
theResetbutton(4)tomakeitshowingnewpeakvalue.
10. Iffinishedmeasurement,thecapshouldscrewedup.Itmaybebetterremovethe
batteryfromthecasetoprolongitstimeofuse.
11.TheHallprobecanbereplaceable.Thedifferencefromoriginalprobetoothersis
2%.
Note:0.1mT=1Gs1T=10000Gs
Maintenance Maintenance Maintenance Maintenanceand and and andNotes Notes Notes Notes
1.Asthestatusofmeasuring,iftheinstrumentcouldnotbeadjustedtothezeroorno
displayvalue.
You ’llfirstcheckthepowersupplywhetherinthecourseofnature.
Thanchecktheprobewhethernormalordamaged.Iftheconnectingwireswere
ruptureyoucouldconnecteditaccordingtotherightFig.Suchterminal1,2are
current,No.4andNo.5areterminalsofvoltage.
Ifyoudon’tfindanddamageinit,pleasesendittoourcompany.It
’ smaybewrong
withinthecircuits.
2.Theprobecan’tburdenforce,becrackedandsqueezed.
3.Whilemakingthezeroadjustment,theprobeshouldbeplacedfarawayfromthe
magneticfieldforfearthemeasurementerror.
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MeasurementofPeak-valueholding.Pressthekey(4)tochangeovernormal
measurementorPeak-valueholding.
8.LoosenthecapoftheHallprobe(seeupperFig).PlacetheeffectivepositionofHall
probetotouchonthesurfaceoftherestingmaterialtightly(DCmagneticfield)orat
zoneofmeasuredmagneticfield.Thescreen(1)willshowthevalueofthemagnetic
field.
9.ResetPeak-valueholdingWhenkeptthePeak-valueholding,butneedtomeasure
surface.Undersuchcircumstances,theprobesurfacewillsufferwearand
tear.
Theconnectingcableoftheprobeshallnotbekneadedorpulledforcibly,
theprobebracketshallnotbebeatenorimpactedandtheprobeleadwire
andweldingspotshallnotbecontactedwithotherconductororinshort
circuit.
a)Illustrationofmeasuringfield(seebelowfig.)
Asholdingthesensor,(nostaffgaugeside)torchthesurfaceofmeasuringobject
lightly.
b)Theworngmethodofholdingthesensor:
Nomakingthetopofsensortotorchthesurfaceofmeasuringobjectforcibly.
(AsbelowFig)Sothatit’lldamagethesensoreasily.
11 4
Normal Measarement Peakhold Measarement
7.

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Main Main Main MainTechnical Technical Technical TechnicalParameters Parameters Parameters Parameters
Range0~200mT~2000mT
Accuracy±2%,±3words;±5%,±5words(1000mT)
Sensitivity0.01mT,0.1mT
Measuredmagnetic
field
DC
ApplicationExamples
Magnetsurfacemagneticfield,ferromagnetic
materialsurfacemagneticfield,DCmotor,
speakers,magneticseparator,permanentmagnetic
separatorofthesurfacemagneticfield,the
exchangefrequencymagneticfield,magneticfield
inductioncookerwork
5.Selectdisplayunit.Pressthekey(7)ofconversion,thedisplayunitwouldbe
transformedfrommTtoGs.
6.Resetzero.Keepthesensorfarawayfrommagneticfieldasthestateofholding.If
thedisplayscreenshouldnotshow“000”.youmustpressthekey(3)toadjustitto
zero.
5
Note:AfterchangeoverthemeasurementrangeortransformtheAC/DCmode,
youallneedtoreset

3.PressthekeyofthePowerOn/OFFinthepanelandthedigitaldisplayscreen
shoulddisplayzero.
4.Selectasuitablemeasurementrange.PressthekeyRANGEswitchoveragainand
again,themeasurementrangewouldbetransformedwithin0~200mTor0~2000
mT.
Temperatureof
environment
5℃～40℃
Relativehumidity
20%～80%(nocondensation)
PowerSupply
Battery9V,Or9VDCexternalpowersupply
regulator
Dimension
150mm(L)*70mm(W)*25mm(H)
Weight
N.W400gG.W900g
Display4½LED
Horizontalsensor
Verticalsensor
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Manipulation Manipulation Manipulation ManipulationProcedure Procedure Procedure Procedure
1.Putthe9Vbatterytocasewhichinthebackoftheinstrument;ifusedtheouter
power,connecttheterminalofthepowertothesocketwhichisinthesideofthe
instrumentandputanotherplugtoelectricsupply.
2.InserttheHallprobeintothesocketonthepanel(accordingtothearrowmarked
thesensor).
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InstrumentFunctionKeys：
1.LEDScreen
2.PowerOn/OFF
3.Zero/Restreading
4.PeakHold/Realvalueswitch
5.RangeChange
6.
7.
mT/Gsunitchange
sensorconnect