PTFE/PVC/PFA/Fiberglass ANSI K Type Nicr/Nial Thermocouple
Extension/Compensation Wire/CableHuona produces different
types of compensated cable for thermocouple, such as KX type, NX,
EX, JX, NC, TX, SC / RC, KCA, KCB. We also produce all cables with
insulation such as PVC, PTFE, Silicone and fiberglass.The
compensated cable is mainly used in thermal measurement
instrumentation. If the temperature changes, the cable responds
with a small voltage that passes to the thermocouple it is
connected to and we already have the measurement.The thermocouple
compensation cables can also be termed as instrumentation cables,
since they are used for process temperature measurement. The
construction is similar to pair instrumentation cable but the
conductor material is different. Thermocouples are used in
processes to sense temperature and is connected to the pyrometers
for indication and control. The thermocouple and pyrometer are
electrically conducted by thermocouple extension cables
/ thermocouple compensating cables. The conductors used for
these thermocouple cables are required to have similar
thermo-electric (emf) properties as that of the thermocouple used
for sensing the temperature. Our plant mainly manufacture
type KX,NX,EX,JX,NC,TX,SC/RC,KCA,KCB compensating wire
for thermocouple, and they are used in temperature measurement
instruments and cables. Our thermocouple compensating products are
all made abiding by GB/T 4990-2010 'Alloy wires of extension and
compensating cables for thermocouples' (Chinese National Standard),
and also IEC584-3 'Thermocouple part 3-compensating wire'
(International standard). The representing of the comp.
wire: thermocouple code+C/X , e.g. SC, KX X: Short
for extension, means that the compensation wire's alloy is as the
same as the the alloy of the thermocouple C: Short for
compensation, means that the compensation wire's alloy has similar
characters with the thermocouple's alloy in a certain
temperature range. Type K Thermocouple Bare WireType K
(CHROMEL vs ALUMEL ) is used in oxidizing, inert or dry reducing
atmospheres. Exposure to vacuum limited to short time periods. Must
be protected from sulfurous and marginally oxidizing atmospheres.
Reliable and accurate at high
temperatures.1. Chemical CompositionMaterialChemical
composition
(%)NiCrSiMnAlKP(Chromel)9010 KN(Alumel)95 1-20.5-1.51-1.52. Physical
properties and Mechnical
propertiesMaterialDensity(g/cm3)Melting point(ºC)Tensile
Strength(Mpa)Volume resistivity(μΩ.cm)Elongation rate
(%)KP(Chromel)8.51427>49070.6(20ºC)>10KN(Alumel)8.61399>39029.4(20ºC)>153. EMF
Value range at different temperatureMaterialEMF value Vs
Pt(μV)100ºC200ºC300ºC400ºC500ºC600ºCKP(Chromel)2816~28965938~60189298~937812729~1282116156~1626619532~19676KN(Alumel)1218~12622140~21802849~28933600~36444403~44635271~5331
EMF value Vs
Pt(μV)700ºC800ºC900ºC1000ºC1100ºC22845~2299926064~2624629223~2941132313~3252535336~355486167~62477080~71607959~80598807~89079617~9737 Type
K Extension Cable Chromel / Alumel Material FEP
insulationSpecifications1.Style:Extension Wire2.Thermocouple copper
wireThermocouple copper wire Classification1. Thermocouple level
(high temperature level). This type of thermocouple wire is mainly
suitable for thermocouple type K, J, E, T, N and L and other high
temperature detection instrument, temperature sensor, etc.2.
Compensating wire level (low temperature level). This type of
thermocouple wire is mainly suitable for compensating cable and
extension wire of various thermocouples of type S, R, B, K, E, J,
T, N and L, heating cable, control cable and so on.Thermocouple
variety and indexThermocouple Variety and
IndexVarietyTypeMeasurement
Range(°C)NiCr-NiSiK-200-1300NiCr-CuNiE-200-900Fe-CuNiJ-40-750Cu-CuNiT-200-350NiCrSi-NiSiN-200-1300NiCr-AuFe0.07NiCr-AuFe0.07-270-0 3
. Dimensions and Tolerance of Fiberglass Insulated Thermocouple
Wire Dimensions / Tolerance mm ) : 4.0+-0.25Color code &
initial calibration tolerances for thermocouple wire:Thermocouple
TypeANSI Color CodeInitial Calibration TolerancesWire
AlloysCalibration+/-ConductorJacketTemperature
RangeStandardLimitsSpecialLimitsCHROMEL(+)
vs.ALUMEL(-)KYellow/RedBrown-200°C to -110°C-110°C to 0°C0°C to
+285°C285°C to +1250°C± 2%±2.2°C±2.2°C± .75%±1.1°C± .4%Color Code &
Initial Calibration Tolerance for Extension Wire:Extension typeANSI
Color CodeInitial Calibration TolerancesWire
AlloysCalibration+/-ConductorJacketTemperature
RangeStandardLimitsSpecialLimitsIron (+) vs.
Constantan(-)JXWhite/RedBlack0°C to +200°C±2.2°C±1.1°CCHROMEL (+)
vs. ALUMEL (-)KXYellow/RedYellow0°C to +200°C±2.2°C±1.1°CCopper(+)
vs. Constantan(-)TXBlue/RedBlue-60°C to +100°C±1.1°C±
.5°CCHROMEL(+) vs. Constantan(-)EXPurple/RedPurple0°C to
+200°C±1.7°C±1.1°CPVC-PVC Physical
Properties:CharacteristicsInsulationJacketAbrasion
ResistanceGoodGoodCut Through ResistanceGoodGoodMoisture
ResistanceExcellentExcellentSolder Iron ResistancePoorPoorService
Temperature105ºC continuous150ºC single105ºC continuous150ºC
singleFla
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