Jiangyin Senphus Electrical Material Co., Ltd.  

Product Name: Thermocouple Cable/Wire (K, E, J, T, N) Model NO.: K, E, J, T, N Size: 0.03mm to 20mm Type: K, E, J, T, N Grade: Best, Ordinary Classification: Alloy Wire Trademark: Senphus Transport Package: Spool, Carton Specification: CE, RoHS Origin: Jiangsu, China (Mainland) Product Description K J E T N type Thermocouple Bare Wire NiCr-NiSi(TypeK) thermocouple bare wireNiCr NiSi(TypeK)thermocouple bare wirefindsthewidestuseinallbasemetalthermocouple,attemperatureabove500°C.Themainchemicalcompositionof positivelegNiCr(KP)areNi≈90%andCr≈10%;negativelegNiSi(KN)areNi≈97%andCr≈3%.Theoperatingtemperaturerangeis-200~1300°C(forshortterm)and0~1100°C(forlongterm).TypeKthermocouple bare wirehasstrongresistancetooxidationthanotherbasemetalthermocouple bare wire.IthashighEMFagainstPlatinum67,excellenttemperatureaccuracy,sensitivityandstability,withalowcost.Itisrecommendedforoxidizingorinertatmospheres,butcannotbeuseddirectlyinthefollowingcases:(1)Alternativelyoxidizingandreducingatmosphere,(2)Atmospherewithsulphurgases(3)Longtimeinvacuum(4)LowoxidizingatmospheresuchashydrogenandcarbonmonoxideatmosphereFe-CuNi(Constantan) (TypeJ)thermocouple bare wireFe-CuNi (typeJ)thermocouple bare wireisalsonamedFe-Constantanthermocouple bare wire.ThepositivelegFe(JP)ismadebypureIron,andthemainchemicalcompositionofnegativelegConstantan(JN)isCu:Ni≈55%:45%.AlthoughtheyareallcalledConstantan,JNdoesnotgivethesameEMFoutputcurveasENandTN,itcannotbeinsteadbyotherConstantan.TheoperatingtemperaturerangeoftypeJthermocouple bare wireis-210~1200°C,butitisusuallyusedinthetemperaturerange0~750°CduetoembrittlementofIron.TypeJthermocouple bare wirehasgoodresistancetooxidationandhighEMFoutputagainstPlatinum67,withgoodtemperatureaccuracy,sensitivityandstability.Itisrecommendedforvacuum,oxidizing,reducingorinertatmospheres,butitcannotbeusedinsulphurousatmosphereabove500°C.NiCr-CuNi(Constantan) (TypeE)thermocouple bare wireNiCr-CuNi (typeE)thermocouple bare wireisalsonamedNiCr-Constantanthermocouple bare wire.ThemainchemicalcompositionofpositivelegNiCr(EP)isNi:Cr≈90:10;negativelegConstantan(EN)isCu:Ni≈55%:45%.AlthoughEN,TN,JNareallcalledConstantan,ENandTNdonnotgivethesameEMFoutputcurveasJN.ENandTNareabletointerchangebuttheyarenotinterchangeablewithJN.TheoperatingtemperaturerangeoftypeEthermocoupleis-200~900°C.TypeEthermocouple bare wirehasthelargestEMFoutputandhighestsensitivity,soitisidealformeasuringsmalltemperaturechange.Italsohasgoodstabilityinthelowtemperaturerangeupto300°C,andgoodpropertyofanti-corrosioninhumidityatmosphere.Itisrecommendedforoxidizingorinertatmospheres,butcannotbeuseddirectlyinreducingatmosphereandatmospherewithsulphurgases.Nicrsi-NisiMg(TypeN)thermocouple bare wireNicrsi-NisiMg(TypeN)thermocouple bare wireisthelatestbasemetalthermocouple,developedtoimprovethedrawbacksthattypeKthermocouple wire has.ThemainchemicalcompositionofpositivelegNicrsi(NP)isNi:Cr:Si≈84.4:14.2:1.4;negativelegNisiMg(NN)isNi:Si:Mg≈95.5:4.4:0.1.TypeNthermocouplealsobeusedinthesimilaratmospheresthattypeKworks,andtheoperatingtemperaturerangeis-200~1300°C.TypeNthermocouple bare wireimprovestheEMFdriftandshorttermEMFchange,comparedtotypeKthermocouple bare wire,andhasalongerlifethantypeKthermocouple bare wire.Therefore,intheindustrieswheretemperaturecontrolandmeasurementareespeciallycritical,typeNthermocouple bare wirehasmoreadvantagesthanotherthermocouple wire asithaslonglifeandstablethermalEMF. Cu-CuNi(Constantan) (TypeT)thermocouple bare wireCu-CuNi (typeT)thermocouple bare wireisalsonamedCu-Constantanthermocouple wire.ThepositivelegCu(TP)ismadebypureCopper,andthemainchemicalcompositionofnegativelegConstantan(TN)isCu:Ni≈55%:45%.AlthoughEN,TN,JNareallcalledConstantan,TNandENdonnotgivethesameEMFoutputcurveasJN.ENandTNareabletointerchangebuttheyarenotinterchangeablewithJN.TheoperatingtemperaturerangeoftypeTthermocouple wire is-200~350°C,DuetothelowresistanceofoxidationthatCopperhas,itisnotadvisabletogobeyondthatrange.TypeTthermocouple bare wirehasgoodresistancetooxidation,highEMFoutput,withgoodtemperatureaccuracy,sensitivityandstability.Inthetemperaturerange-200~0°C,ithasbetterproperty,theyearstabilityislessthan±3μV