CoRMaGeo Instruments RT-1 User manual

RT‐1MagneticSusceptibility
Meter


USERMANUAL
Version1.3(January2015)
Manufactured inAustralia

RT‐1MAGNETICSUSCEPTIBILITYMETER
ModelRT‐1

OPERATOR’SMANUALVersion1.2
Designed&ManufacturedinAustraliaby:

CoRMaGeo Instruments Pty. Limited
A 78 Wallis Avenue, STRATHFIELD NSW 2135AUSTRALIA
T [phone]
E [email protected]
W www.cormageo.com.au


©CoRMaGeoInstrumentsPty.Limited2015
Allrightsreserved.Nopartofthismanualmaybereproduced,copied,storedor
transmittedwithoutpriorwrittenpermissionofthecopyrightholder.
ThismanualhasbeenwrittentohelpusersoftheRT‐1MagneticSusceptibilityMeterto
gainthemostfromtheequipment.
Whilstallreasonableeffortshavebeentakentoensurethatfactsarecorrectandadvice
givenissound,theusermustacceptfullresponsibilityfortheoperationoftheir
equipmentandtheinterpretationofdata.

CONTENTS

PAGE
WARRANTY………………………………………………………………….…1
1.GENERALINFORMATION……………………………………………. 2
2.QUICKSTARTOPERATINGINSTRUCTIONS………………….. 3
3.DESCRIPTIONOFINSTRUMENT…………………………………..5
4.PRINCIPLEOFOPERATION………………………………………..10
5.DEFINITIONS/USEFULINFORMATION……………………….11
6.DETAILEDOPERATINGINSTRUCTIONS………………………..13
‐BASICOPERATION/NAVIGATION ……………………….
.
13
‐TAKING/STORINGAREADING……………………………. 15
‐REVIEWREADINGS…………………………………………….17
‐DUMPDATAVIABLUETOOTH………………………….. 18
7.MENUITEMS……………………………………………………………... 22
8.BLUETOOTHINTERFACE……………………………………………..27
9.TROUBLESHOOTING…………………………………………………..28
10.CALIBRATIONFREQUENCY….……………………………………29
11.SPECIFICATIONS………………………………………………………30
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CoRMaGeoInstrumentsRT‐1ManualPage1
WARRANTY

CoRMaGeowarrantstheRT‐1MagneticSusceptibilityMeteragainstdefectivecomponentsand
workmanshipforrepairattheofficeofCoRMaGeoInstrumentsorauthorizedrepairfacilitiesfree
ofchargeforaperiodoftwelve(12)monthsfromdateofsale.Shipmentcostsaretobeborne
bythecustomer.Malfunctionduetoimproperuseisnotcoveredinthiswarranty.CoRMaGeo
Instrumentsdisclaimanyliabilityforconsequentialdamageresultingfromdefectsinthe
performanceoftheequipment.TheRT‐1isnotwarrantedasbeingfitforaparticularpurpose
andthereisnowarrantyofmerchantability.

Thiswarrantyappliesonlyif:
I.Theitemsareusedsolelyundertheoperatingconditionsandinthemannerrecommended
intheRT‐1UserManual;
II.Theitemshavenotbeenmisusedorabusedinanymannerorrepairsattemptedthereon;
III.WrittennoticeofthefailurewithinthewarrantyperiodisforwardedtoCoRMaGeo
Instrumentsandthedirectionsreceivedforproperlyidentifyingitemsreturnedunder
warrantyarefollowed;and
IV.ThereturnnoticeauthorizesCoRMaGeoInstrumentstoexamineanddisassemblereturned
productstotheextentCoRMaGeoInstrumentsdeemsnecessarytoascertainthecausefor
failure.

Thewarrantiesexpressedhereinareexclusive.Therearenootherwarranties,eitherexpressed
orimplied,beyondthosesetforthherein,andCoRMaGeoInstrumentsdoesnotassumeany
otherobligationorliabilityinconnectionwiththesaleoruseofthesaidproduct.Anyproductor
servicerepairedunderthiswarrantyshallbewarrantedfortheunexpiredportionoftheoriginal
warrantyperiodonly.

Thiswarrantydoesnotapplytolimitedlifecomponentssuchascables,batteries,etc.
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

February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage2
1.GENERALINFORMATION

TheRT‐1MagneticSusceptibilityMeterisdesignedtomeasurethemagneticsusceptibilityof
rockoutcrops,rocksamplesanddrillcore.

Themineralthatlargelygovernsthemagneticbehaviourofarock,andwhichaccountsformost
ofthesusceptibilityobserved,ismagnetite.Thesusceptibilityofmagnetitedependsonseveral
factors,suchastheintensityofthemagnetisingfield,thechemicalcompositionofthe
magnetiteanditsgrainsize.Susceptibilitycan,however,beusedtodeterminethemagnetic
abundance,providedthatthedependencebetweensusceptibilityandmagneticabundanceis
known.

February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage3
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2. QUICKSTARTOperatingInstructions
BATTERIES
RT‐1instrumentsoperateonthreeAAbatteries.Use1.2Vor1.5Valkaline,NiMH,orlithium
batteries.

Toinstallthebatteries:
1. OnthebackfaceoftheRT‐1,unscrewthetwoscrewsandremovethebatterycover.
2. Insertthree(3)“AA”typebatteries,observingpolarity.
3. Replaceandscrewdownthebatterycover.

ToturntheRT‐1onoroff:
1. ToturnontheRT‐1,press
Note:Duringstartup,holdinairawayfromanythingmetallicasunitautomaticallyzeros
2. ToturnofftheRT‐1,either:
i. Pressandholdfor~2.5sec.3beepalertswillsoundandtheRT‐1will
poweroff.Ifisreleasedbeforethe3rdbeepsounds,theRT‐1will
remainon.
OR
ii. GototheMainMenu,pressandscrolltothe“PowerOff”menuitem
usingthearrowkeysand,thenpress.

Whenturnedontheunitwillautomatically:
1. Displaythestart‐upscreenforabout2seconds;
2. Zeroinair(~4seconds);
3. GodirectlyintoMeasuring(reading)mode.


February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage4
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
TozerotheRT‐1:
1. GototheMainMenu.
2. Holdtheinstrumentclearofanymagneticorconductivematerialoranyelectronic
devices.
3. Selectthe“Zero”menuitemandthenpress.
4. Youarenowreadytotakeareading
Note:thezeroingshouldtake4seconds

TotakeareadingwiththeRT‐1:
IntheMeasuringscreen,readingscanbetakenineitherSCANorSTEPmode:
SCANmode(continuousreadings):
1. PlaceandholdthesensorendoftheRT‐1againstthesample.
2. ContinuousreadingswillbedisplayedontheRT‐1screen(seeFig4).
3. Presseithertherightorleftblackround“Measure”buttonsonthesideoftheRT‐1
(seeFig1and2)tostoreareading.
4. ThereadingwillbedisplayedontheRT‐1screen(seeFig4).
STEPmode(individualpointreading):
1. PlaceandholdthesensorendoftheRT‐1againstthesample.
2. Presseithertherightorleftblackround“Measure”buttons onthesideoftheRT‐1
(seeFig4)tostoreareading.
3. ThereadingwillbedisplayedontheRT‐1screen(seeFig4).



February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage5
3.DESCRIPTIONOFINSTRUMENT

TheRT‐1isdesignedasaonepieceinstrumentwithagraphicsdisplayforthepresentationof
themagneticsusceptibilityvaluesinbothdigitalandanalogformat.Anaudibletoneofvarying
frequencyrelatedtothevalueallowstheoperatortofindthepeakreadingusingthegraphical
displayorthehighestfrequencysoundandthenrecordadigitalvalue.Ithassolid‐state
memorywiththeabilitytostorereadingsintogroupsandlabel(withaflag)individualreadings.

TheRT‐1hasBluetoothconnectionfortransferringdatatoaPCcomputer.
UNITLAYOUTOVERVIEW
Figure1FrontFigure2Back

February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage6
OPENINGSCREEN

Onstartup,theRT‐1willflashtheopeningscreen,showingthefirmwareversionoftheunit
(Fig3a).Followingthis,itwillautomatically“zero”(Fig.3b)beforemovingtotheMeasuring
Screen(seenextsection).

Note:AlwaysturntheRT‐1onandperform“zeroing”intheopenair,awayfrompresenceof
itemswithhighmagneticsusceptibility(seeDefinitions/UsefulInformationformoredetails).

a)b)

Figure3a)Theopeningscreenandb)zeroingscreen

February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage7
MEASURINGMENUSCREEN

TheMeasuringScreenisusedtoviewandrecordmagneticsusceptibilityreadings.Abargraph
indicatingthestrengthofthemagneticsusceptibilityislocatedontheleftsideofthescreen,
withthesetupandmemoryparametersdisplayedcentrally(thesevaluescanbechangedusing
thevariousmenus–seefollowingsections).
Figure4Measuringscreen

February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage8
CONTROLS

TheRT‐1hasfourtoppushbuttonsassociatedwiththeoperationofthemenusystem(control
keys)andtwosidepushbuttons(leftandright)associatedwithtakingreadings(measurekeys).
TheseareshowninFig.5:

a)b)

Figure5a)TheRT‐1keysandb)TheRT‐1keylocations.


February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage9

FLAGSYMBOLS

Aflagsetsamarkernexttoanindividualreading.Flagsareusefulforsuchthingsashelpingto
rememberreadingsofinterest,tonotebadreadingsorreadingstorechecketc.Thereare4
markersavailable:
SymbolSuggestedCorrespondedMeaning
E error
X bad
Ccheck
i interesting

ItisimportanttonotethatonceareadinghasbeenflaggedintheRT‐1unit,theFlagcannotbe
removed.



February2015RT‐1UserManualVer1.2
CoRMaGeoInstrumentsRT‐1ManualPage10

4.PRINCIPLEOFOPERATION

ThefunctionoftheRT‐1isbasedonelectromagneticinduction.Therearetwocoilsplaced
orthogonallytoeachotherinthedetectorhead,whichismountedinthetopoftheRT‐1case.
Inthenon‐magneticenvironmentthevoltageinducedfromthetransmittercoiltothereceiver
coiliszero.Whenarocksampleisbroughtnearthecoils,avoltagewhichisproportionaltothe
magneticsusceptibilityofthesampleisinducedinthereceivercoil.Thissignalisdetectedbya
phase‐lockedamplifierandafterrectificationitisusedtodrivethecircuitryforthedisplayof
themagneticsusceptibilityreadings.Thereadingisdirectlycalibratedforsusceptibility.SeeFig.
6below.



Figure6Principleofoperation:A750Hzsignwaveisconstantlyfedintothetransmitter(TX)
Coil,theresultingmagneticfieldinducesa750HzsignwaveintheRXCoil.Thesignalinducedin
thereceiver(RX)Coilvariesduetothemagneticsusceptibilityandconductivityofthesample.
Themagneticsusceptibilitycomponentisvirtually90degreesoutofphasetotheconductive
component.

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
5.DEFINITIONS/USEFULINFORMATION

OperationMode
TheRT‐1operatesintwomodesbeingcontinuousSCANmodeorsinglereadingSTEPmode.

SCANmodeupdatesthereadingscontinuouslybylocatingpeakreadings,approximatelyonce
persecond.
STEPmodetakesreadingsonlywhenabuttonisactivatedandessentiallytakesa“snap‐shot”of
themagneticsusceptibilityatthatpoint.SelectingSTEPmodewhenstoringmeasurementswill
freezethedisplaywiththevaluejuststoredinmemory.

BarGraph
Thebargraphisalogscaletobaseten(10)andiscapableofshowingvaluesbetween1x10‐5
SIunitsand9.999SIunits.

BatteryReplacement
TheRT‐1doesnotcurrentlyhavealowbatterywarning(Firmwareversion1.6H).Toreplacethe
batteries,removethelidonthebackfaceoftheRT‐1byunscrewingthetwoscrewsand
replacethebatterieswiththree(3)“AA”typebatteries.

Note:Infutureversionsofthefirmware,thedevicewilldisplaya“lowbatterysymbol”when
thebatteriesarelowandan“emptybatterysymbol”whenthebatteriesareexhausted.

Zeroing
TheRT‐1mustbezeroedoccasionallytocorrectfordrift.Thisisthereferencepointagainst
whichallotheranalyticalsignalswillbemeasured.Thisisproperlyperformedunderthe
instrument’snormaloperatingconditions.


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Whenyou"zero"theRT‐1youaretellingtheinstrumenttousetheelectricaloutputofthe
sensoratthetimethesensoriszeroedasthepointofreferenceforallfuturereadings.Change
insensoroutputisthenmeasuredwithrespecttotheoutputatthetimetheinstrumentwas
zeroed.

Alwaysperform“zeroing”awayintheopenair,awayfrompresenceofitemswithhigh
magneticsusceptibility.WhenyouzerotheRT‐1,theelectricaloutputofthesensoratthat
momentbecomesthepointofcomparison.Ifthesensoriszeroedclosetosomethingwithhigh
magneticsusceptibilitythentheinstrumentmaydisplayafalsereading.

Re‐zeroingtheRT‐1
Whentakingreadingsonsamplesofhighmagneticsusceptibilityitmaybenecessarytore‐zero
themeterbeforetakingreadingsagainonsamplesofmuchlowersusceptibility.Thisisdueto
remnantenergybeingstoredinthesensorcoilmakingreadingswithlowmagnetic
susceptibilityappeartoohigh.

DrillCoreCorrectionFactors
Ingeneral,ifsamplesaretoosmallsothatairissensedbythedetector,thereadingwillbe
somewhatlessthanthetruevalue.Howmuchdependsonactualdimensionsbutitisrarelyless
thanhalf.

CorrectionfactorsforcertaindrillcoresizesaregiveninTable1.

Table1Drillcorecorrectionfactors
COREDIAMETERCORRECTIONFACTOR
AQ27mm1.82±0.02
BQ33mm1.77±0.02
NQ48mm1.51±0.02
HQ62mm1.44±0.02
PQ85mm1.24±0.02

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4.DETAILEDOPERATINGINSTRUCTIONS

WARNING
Verystrongmagneticfieldscanaffectcalibration.

IMPORTANT
Alwaysperform“zeroing”intheopenair,awayfrompresenceofitemswithhighmagnetic
susceptibility.

BATTERIES
RT‐1instrumentsoperateonthree(3)AAbatteries.Use1.2Vor1.5Valkaline,NiMH,orlithium
batteries.

Toinstallthebatteries:
1. OnthebackfaceoftheRT‐1,unscrewthetwoscrewsandremovethebatterycover.
2. Insertthree(3)“AA”typebatteries,observingpolarity.
3. Replaceandscrewdownthebatterycover.

NOTICE
RemovethebatteriesforshippingorwhenyoudonotplantousetheRT‐1forseveralmonths.
Storeddataisnotlostwhenbatteriesareremoved.

ToturntheRT‐1onoroff:
1. ToturnontheRT‐1,press
2. ToturnofftheRT‐1,either:

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i. Pressandholdfor~2.5sec.3beepalertswillsoundandtheRT‐1will
poweroff.Ifisreleasedbeforethe3rdbeepsounds,theRT‐1will
remainon.
OR
ii. GototheMainMenu,pressandscrolltothe“PowerOff”menuitem
usingthearrowkeysand,thenpress.

Whenturnedontheunitwillautomatically:
1. Displaythestart‐upscreenforabout2seconds;
2. Zeroinair(~4seconds);
3. GodirectlyintoMeasuring(reading)mode.

TonavigatebetweentheMeasuringscreenandMainMenuscreen(Fig4and8respectively):
1. TomovefromtheMeasuringscreentotheMainMenuscreen:pressOReitherof
thearrowkeysand.
2. TomovefromtheMainMenuscreentotheMeasuringscreen:press.

NavigatingandSelectingtheMainMenuoptions:
1. Tonavigatebetweenthemenuoptions,usethearrowkeysand.
2. Toselectamenuoption,press.
3. Toescapeamenuoption,press.

TozerotheRT‐1:
1. GototheMainMenu.
2. Holdtheinstrumentclearofanymagneticorconductivematerialoranyelectronic
devices.

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3. Selectthe“Zero”menuitemandthenpress.
4. Youarenowreadytotakeareading
Note:thezeroingshouldtake4seconds

TotakeareadingwiththeRT‐1:
IntheMeasuringscreen,readingscanbetakenineitherSCANorSTEPmode:
SCANmode(continuousreadings):
1. PlaceandholdthesensorendoftheRT‐1againstthesample.
2. ContinuousreadingswillbedisplayedontheRT‐1screen(seeFig4).
3. Presseithertherightorleftblackround“Measure”buttonsonthesideoftheRT‐1
(seeFig1and2)tostoreareading.
4. ThereadingwillbedisplayedontheRT‐1screen(seeFig4).
STEPmode(individualpointreading):
1. PlaceandholdthesensorendoftheRT‐1againstthesample.
2. Presseithertherightorleftblackround“Measure”buttons onthesideoftheRT‐1
(seeFig4)tostoreareading.
3. ThereadingwillbedisplayedontheRT‐1screen(seeFig4).

Note1:ThedisplaywillindicatewhetherthereadingisinSIorCGSunits.Eithercanbeselected
fromthemenu(seeSettingsMenu|Unitsbelowonhowtochangeunits).

Note2:IfyouneedtoturntheRT‐1upside‐downforthis,youwillnoticethescreendisplaywill
fliparoundforeaseofuse!

TostoreareadingintheRT‐1:
Beforeyoucanstoreareading,youmustturnthememoryon.MemoryOnorMemoryOffis
indicatedatthebottomoftheMeasuringscreen(seeFig4).
Turnthememoryon:
1. GototheMainMenu.

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2. Selectthe“Memory”menuitemandthenpress.
3. Selectthe“LogRecord”menuitemandthenpresstotoggleON(orOFF).
4. GototheMeasuringscreen.WhenthememoryisONthebottomofthescreenwill
show‘NextMemory’followedbythememorylognumber(Mxx‐xx)andrecordnumber
(Mxx‐xx).WhenthememoryisOFF,thescreenwillshow“MemoryOff”.

Changethememorygroup*:
*MemorygroupreferstoaspecificsubsetofrecordnumberswithintheRT‐1memorybank
wherereadingscanbestored.Thereare99memorylogs,namedM01toM99.Eachmemory
groupcanholdupto99readings.
1. GototheMainMenu.
2. Selectthe“Memory”menuitemandpress.
3. Selectthe“ChangeLog”menuitemandpress.
4. Selectthenewgroupandpress.
5. Thememorygrouphasnowbeenupdated.

Note1:An*symbolnexttoagroupindicatesthattherearereadingsstoredinthatgroup.You
cancontinuetosavereadingstoanygroupuntilthegroupisfull(99readings).(Firmware
version1.6H).
Note2:Infutureversionsofthefirmware,thedevicewillflashawarningnoticeoncethe
memorygroupisfullanditwillautomaticallyjumptothenextemptygroup.

Takeandstoreareading
1. PlaceandholdthesensorendoftheRT‐1againstthesample.
2. Presseithertherightorleftblack“Measure”buttons (seeFig1and2)totakea
reading(see“TotakeareadingwiththeRT‐1”).
3. Therecordnumber(Mxx‐xx)atthebottomofthescreenwillincreasebyonevalueifa
readinghasbeensuccessfullystored.

February2015RT‐1UserManualVer1.2
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Toviewareading/logofreadings:
1. GototheMainMenu.
2. Selectthe“Memory”menuitemandpress.
3. Selectthe“ViewLog”menuitemandpress.
4. Selectthegroupofinterestandpress.
5. Usingthearrowkeysand,scrollupanddowntoviewreadingswithinthegroup.
6. ToFlagareading:
a. Highlightthereadingofinterest
b. PresstoviewtheFlagoptions
c. Scrollupanddownusingthearrowkeysand
d. PresstoselectaFlag
e. TheselectedFlagwillappearnexttothe“Flag:”textinthemiddleofthedisplay
screeniftheFlaghasbeensuccessfullystored
7. Toexit,press.
ImportantNote:Onceareadinghasbeenflagged,theFlagcannotberemovedorchanged

Toerase/clearalog:
Note:Itisnotpossibletoeraseindividualreadings,onlyentiregroups–byerasingagroupall
thereadingsinthatgroupwillbedeletedandcannotberecovered!ItispossibletoFlagsuspect
individualreadingsforfuturereference,withouttheneedtodeletetheentiregroup.
1. GototheMainMenu.
2. Selectthe“Memory”menuitemandpress.
3. Selectthe“EraseLog”menuitemandpress.
4. Byscrolling,selectthelogyouwanttoeraseandpress.
5. Asasafeguard,youwillbeasked“EraseGroupXX–No/Yes”.