RayTek MI Miniature Infrared Sensor User manual

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MI
Miniature Infrared Sensor
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Operating Instructions
Rev. F 04/2006
54301

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DeclarationofConformityfortheEuropeanCommunit
y
Thisinstrumentconformsto:
EMC:IEC/EN61326‐1
Safety:EN61010‐1:1993/A2:1995

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Contacts
Europe
RaytekGmbH
13127Berlin,Germany
BlankenburgerStr.135
Tel:+4930478008–0
+4930478008–400
Fax:+49304710251
[email protected]
USA
RaytekCorporation
CA95061–1820,SantaCruz
1201ShafferRd.POBox1820
Tel:+1831458–1110or
+1800227–8074
Fax:+1831458–1239
[e-mail]
UnitedKingdom
Tel:+441908630800
Fax:+441908630900
[email protected]
France
Tel:0800888244
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[email protected]
RaytekChinaCompany
Beijing,China
Tel:+861064392255
Fax:+861064370285
[email protected].cn
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Internet:http://www.raytek.com/
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©RaytekCorporation.
Raytek,theRaytekLogo,andDataTempareregisteredtrademarksofRaytekCorporation.
Allrightsreserved.Specificationssubjecttochangewithoutnotice.

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WARRANTY
Themanufacturerwarrantsthisinstrumenttobefreefromdefectsin
materialandworkmanshipundernormaluseandserviceforthe
periodoftwoyearsfromdateofpurchase.Thiswarrantyextends
onlytotheoriginalpurchaser.Thiswarrantyshallnotapplytofuses,
batteries,oranyproductthathasbeensubjecttomisuse,neglect,
accident,orabnormalconditionsofoperation.
Intheeventoffailureofaproductcoveredbythiswarranty,the
manufacturerwillrepairtheinstrumentwhenitisreturnedbythe
purchaser,freightprepaid,toanauthorizedServiceFacilitywithin
theapplicablewarrantyperiod,providedmanufacturer’s
examinationdisclosestoitssatisfactionthattheproductwas
defective.Themanufacturermay,atitsoption,replacetheproductin
lieuofrepair.Withregardtoanycoveredproductreturnedwithin
theapplicablewarrantyperiod,repairsorreplacementwillbemade
withoutchargeandwithreturnfreightpaidbythemanufacturer,
unlessthefailurewascausedbymisuse,neglect,accident,or
abnormalconditionsofoperationorstorage,inwhichcaserepairs
willbebilledatareasonablecost.Insuchacase,anestimatewillbe
submittedbeforeworkisstarted,ifrequested.
THEFOREGOINGWARRANTYISINLIEUOFALLOTHER
WARRANTIES,EXPRESSEDORIMPLIED,INCLUDINGBUT
NOTLIMITEDTOANYIMPLIEDWARRANTYOF
MERCHANTABILITY,FITNESS,ORADEQUACYFORANY
PARTICULARPURPOSEORUSE.THEMANUFACTURER
SHALLNOTBELIABLEFORANYSPECIAL,INCIDENTALOR
CONSEQUENTIALDAMAGES,WHETHERINCONTRACT,
TORT,OROTHERWISE.

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TABLEOFCONTENTS
1SAFETYINSTRUCTIONS............................................1
2DESCRIPTION ...............................................................3
3TECHNICALDATA ......................................................4
3.1MEASUREMENTSPECIFICATIONS ...............................4
3.2OPTICALSPECIFICATIONS ..........................................6
3.3ELECTRICALSPECIFICATIONS ....................................7
3.4ENVIRONMENTALSPECIFICATIONS ...........................8
3.5DIMENSIONS ...............................................................9
3.6SCOPEOFDELIVERY .................................................10
4BASICS...........................................................................11
4.1MEASUREMENTOFINFRAREDTEMPERATURE.........11
4.2EMISSIVITYOFTARGETOBJECT................................12
4.3AMBIENTTEMPERATURE .........................................12
4.4ATMOSPHERICQUALITY ..........................................12
4.5ELECTRICALINTERFERENCE ....................................13
5INSTALLATION ..........................................................14
5.1POSITIONING ............................................................14
5.1.1DistancetoObject.............................................14
5.2WIRING.....................................................................15
5.2.1SensorHeadCable ............................................15
5.2.2CablePreparations ............................................16
5.3OUTPUTS...................................................................18

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5.3.1SignalOutput................................................... 19
5.3.2HeadAmbientTemp./AlarmOutput ............. 20
5.3.3ThermocoupleOutput....................................... 22
5.4INPUTSFTC.............................................................. 23
5.4.1EmissivitySetting(analogcontrolled) ............. 24
5.4.2EmissivitySetting(digitalcontrolled) ............. 25
5.4.3AmbientBackgroundTemperature
Compensation ............................................................ 26
5.4.4TriggerandHoldFunction............................... 28
5.5CONNECTINGTOTHEPCVIARS232 ...................... 30
5.6INSTALLINGOFMULTIPLESENSORSVIARS485...... 31
6OPERATION................................................................. 34
6.1CONTROLPANEL ..................................................... 34
6.2SETTINGOFMODES.................................................. 35
6.3SETTINGTHEOUTPUTJUMPER ................................ 35
6.4POSTPROCESSING .................................................... 38
6.4.1Averaging ......................................................... 38
6.4.2PeakHold.......................................................... 40
6.4.3ValleyHold ....................................................... 41
6.4.4AdvancedPeakHold......................................... 42
6.4.5AdvancedValleyHold ...................................... 43
6.4.6AdvancedPeakHoldwithAveraging............... 43
6.4.7AdvancedValleyHoldwithAveraging............ 43
6.5FACTORYDEFAULTS ................................................ 44
7OPTIONS....................................................................... 45

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8ACCESSORIES .............................................................46
8.1OVERVIEW ................................................................46
8.2ADJUSTABLEMOUNTINGBRACKET.........................48
8.3FIXEDMOUNTINGBRACKET ....................................49
8.4AIRPURGINGJACKET...............................................50
8.5AIRCOOLINGSYSTEM..............................................52
8.6RIGHTANGLEMIRROR ............................................57
8.7BOXLID ....................................................................58
8.8PROTECTIVEWINDOW .............................................59
9MAINTENANCE..........................................................60
9.1TROUBLESHOOTINGMINORPROBLEMS ..................60
9.2FAIL‐SAFEOPERATION ............................................61
9.3SENSINGHEADEXCHANGE .....................................63
10SOFTWARE .................................................................65
11PROGRAMMINGGUIDE .......................................66
11.1TRANSFERMODES ..................................................67
11.2GENERALCOMMANDSTRUCTURE ........................68
11.3DEVICEINFORMATION...........................................69
11.4DEVICESETUP ........................................................70
11.4.1TemperatureCalculation ................................70
11.4.2EmissivitySettingandAlarmSetpoints .......70
11.4.3PostProcessing ...............................................72
11.5DYNAMICDATA.....................................................72
11.6DEVICECONTROL ..................................................73
11.6.1OutputfortheTargetTemperature................73

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11.6.2AnalogOutput,Scaling ................................. 73
11.6.3AlarmOutput................................................. 73
11.6.4Factorydefaultvalues..................................... 73
11.6.5LockMode....................................................... 74
11.6.6ModeSettingfortheDigitalInputFTC3....... 74
11.6.7ChangingtheSensingHeadCalibrationData74
11.6.8AmbientBackgroundTemperature
Compensation ............................................................ 74
11.7MULTIPLEUNITS(MULTIDROPMODE,RS485) .... 76
11.8COMMANDSET ...................................................... 77
12APPENDIX................................................................... 81
12.1DETERMINATIONOFEMISSIVITY ........................... 81
12.2TYPICALEMISSIVITYVALUES ................................ 83
INDEX ............................................................................... 87

SafetyInstructions
MI1
1SafetyInstructions
Thisdocumentcontainsimportantinformation,whichshouldbe
keptatalltimeswiththeinstrumentduringitsoperationallife.Other
usersofthisinstrumentshouldbegiventheseinstructionswiththe
instrument.Eventualupdatestothisinformationmustbeaddedto
theoriginaldocument.Theinstrumentshouldonlybeoperatedby
trainedpersonnelinaccordancewiththeseinstructionsandlocal
safetyregulations.
AcceptableOperation
Thisinstrumentisintendedonlyforthemeasurementof
temperature.Theinstrumentisappropriateforcontinuoususe.The
instrumentoperatesreliablyindemandingconditions,suchasin
highenvironmentaltemperatures,aslongasthedocumented
technicalspecificationsforallinstrumentcomponentsareadheredto.
Compliancewiththeoperatinginstructionsisnecessarytoensurethe
expectedresults.
UnacceptableOperation
Theinstrumentshouldnotbeusedformedicaldiagnosis.
ReplacementPartsandAccessories
Useonlyoriginalpartsandaccessoriesapprovedbythe
manufacturer.Theuseofotherproductscancompromisethe
operationalsafetyandfunctionalityoftheinstrument.
InstrumentDisposal
Disposalofoldinstrumentsshouldbehandledaccordingto
professionalandenvironmentalregulationsaselectronicwaste.

SafetyInstructions
2MI
OperatingInstructions
Thefollowingsymbolsareusedtohighlightessentialsafety
informationintheoperationinstructions:
Helpfulinformationregardingtheoptimaluseofthe
instrument.
Warningsconcerningoperationtoavoidinstrument
damage.
Warningsconcerningoperationtoavoidpersonalinjury.
Payparticularattentiontothefollowingsafetyinstructions.
Usein110/230VACelectricalsystemscanresultin
electricalhazardsandpersonalinjuryifnotproperly
protected.Allinstrumentpartssuppliedbyelectricitymust
becoveredtopreventphysicalcontactandotherhazardsat
alltimes.

Description
MI3
2Description
TheminiatureinfraredsensorsMIarenoncontactinfrared
temperaturemeasurementsystems.Theyaccuratelyandrepeatably
measuretheamountofenergyemittedfromanobjectandconvert
thatenergyintoatemperaturesignal.
Thefollowingoutputsareavailable:
• J‐Thermocouple
• K‐Thermocouple
• 0‐5Volt
• 0‐20mAor4‐20mA
• 10mV/°Cheadambienttemperaturesignal
• RS232interface
• optional:RS485interface
ThesensingheadisprotectedbyaruggedIEC529(IP65,NEMA‐4)
stainlesssteelhousing,andisconnectedtotheelectronicboxwitha
1m(3ft)cable.Longercablesmustbeorderedasanoption.The
electronicboxisseparatedfromthesensinghead.Thisallowsthe
sensingheadtobeusedinhotenvironmentsupto180°C(356°F)
withoutcooling.Theelectronicboxcanonlybeusedinambient
temperaturesupto65°C(150°F).
MIwillallowsensingheadstobeinterchangedbyprogrammingin
theuniquecalibrationdataassociatedwithdifferentheads.Take
specialcareforthesensingheadcalibrationdataprintedonthecable!

TechnicalData
4MI
3TechnicalData
3.1MeasurementSpecifications
TemperatureRange
LT‐40to600°C(‐40to1112°F)
forJ‐Thermocouple:‐25to600°C(‐13to1112°F)
SpectralResponse
LT8to14μm
ResponseTime
Allmodels150ms(95%response)
Accuracy
LT±1%or±1°C(±2°F)whicheverisgreater
LT±2°C(±4°F)fortargettemp.<20°C(68°F)
TCoutputs±1%or±2.5°C(±5°F)whicheverisgreater
Atambienttemperature23°C±5°C(73°F±9°F)
Repeatability
Allmodels±0.5%or±0.5°C(±1°F)whicheverisgreater

TechnicalData
MI5
TemperatureResolution
LT±0.1K(±0.2°F)*
±0.25K(±0.5°F)**
*Forazoomedtemperaturespanof300°C(600°F)
**Forthefulltemperaturerangeoftheunit
TemperatureCoefficient
MIC±0.05KperKor±0,05%/Kwhicheveris
greater,atambient:23to125°C(73to185°F)
MIH±0.05KperKor±0,05%/Kwhicheveris
greater,atambient:23to180°C(73to356°F)
MIC,MIH±0.1KperKor±0.1%perKwhicheveris
greater,atambient:0to23°C(32to73°F)
MID±0.15KperKor±0.15%perKwhicheveris
greater,atambient:0to85°C(32to185°F)
Box±0.1KperKor±0.1%perKwhicheveris
greater
ThermalShock(within20min.)
LT±3.5KatΔTambient=25K(45°F)
attargettemperatureof50°C(45°F)
Emissivity
Allmodels0.100to1.100
Transmission
Allmodels0.100to1.000

TechnicalData
6MI
3.2OpticalSpecifications
OpticalResolutionD:S
MID,MIC;MIH22:1(typ.),21:1(guaranteed)
MID,MIC;MIH10:1
MID,MIC2:1
At90%energyinminimumanddistance400mm(15.7in.)

Figure1:SpotSizeChart

TechnicalData
MI7
3.3ElectricalSpecifications
PowerSupply
Voltage12to26VDC
Current100mA
Outputs
1.Output(OUT)0to20mA,or
4to20mA,or
0to5V,or
Thermocouple(JorK)
2.Output(AMB)0to5Voutputforheadambienttemperature
(0to500°C,32to932°F)oroutputforalarm
relay(softwareenabled,onlyinconjunction
withRS232/485)
mAOutputrecommendedloopimpedanceseeFigure9on
page19.
0to5VOutputsmin.loadimpedance100kΩ(alowerload
impedancedeterioratestheaccuracy)
outputimpedance100Ω
shortcircuitresistant
Thermocoupleoutputimpedance20Ω
shortcircuitresistant

TechnicalData
8MI
3.4EnvironmentalSpecifications
AmbientTemperature
MIHsensinghead0to180°C(32to356°F)
MICsensinghead0to125°C(32to257°F)
MIDsensinghead0to85°C(32to185°F)
MIDwithaircooling‐18to200°C(0to392°F)
Electronicsbox0to65°C(32to150°F)
StorageTemperature‐10to85°C(14to185°F)
Rating(Head)IP65(NEMA‐4),notformodelswithan
opticalresolutionof2:1
Rating(Box)IP65(NEMA‐4)
RelativeHumidity10%to95%non‐condensing
EMCIEC61326‐1
max.cablelength3m(118in.)
Vibration(Head)IEC60068‐2‐6:2G,10to150Hz,3axes
Shock(Head)IEC60068‐2‐27:50G,11ms,3axes
Weight(Head)50g(2oz.)with1mcable,stainlesssteel
Weight(Box)270g(10oz.),die‐castzinc
HeadCableMaterial
MID/MICPUR(Polyurethane),Halogenfree,
Siliconefree
MIHTeflon®
Teflondevelopspoisonousgasseswhenitcomesinto
contactwithflames!

TechnicalData
MI9
3.5Dimensions

Figure2:DimensionsofSensingHead

Standard cable length
1 m (3 ft.)
MID/MIC: Ø 5 mm (0.2 in)
MIH: Ø 3 mm (0.12 in)
2 mounting holes,
Ø 4.5 mm
(
0.17 in
)

TechnicalData
10MI

Figure3:DimensionsofElectronicBox
3.6ScopeofDelivery
Thescopeofdeliveryincludesthefollowing:
• Sensinghead
• 1mheadcable
• Mountingnut
• Electronicbox
• Operatinginstructions

Basics
MI11
4Basics
4.1MeasurementofInfraredTemperature
AllsurfacesemitinfraredradiationTheintensityofthisinfrared
radiationchangesaccordingtothetemperatureoftheobject.
Dependingonthematerialandsurfaceproperties,theemitted
radiationliesinawavelengthspectrumofapproximately1to20μm.
Theintensityoftheinfraredradiation(”heatradiation”)isdependent
onthematerial.Formanysubstancesthismaterial‐dependent
constantisknown.Thisconstantisreferredtoasthe”emissivity
value”.
Infraredthermometersareoptical‐electronicsensors.Thesesensors
aresensitivetotheemittedradiation.Infraredthermometersare
madeupofalens,aspectralfilter,asensor,andanelectronicsignal
processingunit.Thetaskofthespectralfilteristoselectthe
wavelengthspectrumofinterest.Thesensorconvertstheinfrared
radiationintoanelectricalsignal.Thesignalprocessingelectronics
analyzetheelectricalsignalsandconvertitintoatemperature
measurement.Astheintensityoftheemittedinfraredradiationis
dependentonthematerial,therequiredemissivitycanbeselectedon
thesensor.
Thebiggestadvantageoftheinfraredthermometerisitsabilityto
measuretemperaturewithouttouchinganobject.Consequently,
surfacetemperaturesofmovingorhardtoreachobjectscaneasilybe
measured.

Basics
12MI
4.2EmissivityofTargetObject
Todeterminetheemissivityofthetargetobjectrefertosection12.1
DeterminationofEmissivityonpage81.Ifemissivityislow,
measuredresultscouldbefalsifiedbyinterferinginfraredradiation
frombackgroundobjects(suchasheatingsystems,flames,fireclay
bricks,etc.closebesideorbehindthetargetobject).Thistypeof
problemcanoccurwhenmeasuringreflectivesurfacesandverythin
materialssuchasplasticfilmsandglass.
Thismeasurementerrorcanbereducedtoaminimumifparticular
careistakenduringinstallation,andthesensingheadisshielded
fromthesereflectingradiationsources.
4.3AmbientTemperature
Thesensingheadwasdevelopedforthefollowingambient
temperatureranges:
• MIH:0to180°C(32to356°F)
• MIC:0to125°C(32to257°F)
• MID:0to85°C(32to185°F)
TheMIDcanoperateinambienttemperaturesupto200°C(392°F)
withtheair‐coolingaccessory.
4.4AtmosphericQuality
Ifthelensgetsdirty,infraredenergywillbeblockedandthe
instrumentwillnotmeasureaccurately.Itisgoodpracticetoalways
keepthelensclean.TheAirPurgeJackethelpskeepcontaminants
frombuildinguponthelens.Ifyouuseairpurging,makesurea
filteredairsupplywithcleandryairatthecorrectairpressureis
installedbeforeproceedingwiththesensorinstallation.