Type N thermocouple bare wire

Type N thermocouple bare wire

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Description

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Type N thermocouple bare wire detail:

Positive: Nicrosil , Negative: Nisil
Color: · bright or oxidized
Product Size: 0.05mm to 10.0mm

Thermocouple bare wire is used at temperatures up to 1260°C (2300°F). MICC thermocouple bare
wire is supplied with bright or oxidized surface according to standard or special EMF requirements.
Each individual lead is calibrated against platinum and the EMF values are shown on each coil or spool.

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Thermocouple Variety and Index
Variety Type Measurement Range(℃)
NiCr-NiSi K –200–1300
NiCr-CuNi E –200–900
Fe-CuNi J –40–750
Cu-CuNi T –200–350
NiCrSi-NiSi N –200–1300
NiCr-AuFe0.07 NiCr-AuFe0.07 –270–0

 

Thermocouple type and grade

 

Thermocouple Type Grade Temperature Range(℃) Allowable Deviation
type K and type N I –40–1100 ±1.5℃ or±0.4％t
II –40–1300 ±2.5℃ or ±0.75％t
III –200–40 ±2.5℃ or ±1.5％t
type E I –40–1100 ±1.5℃ or ±0.4％t
II –40–1300 ±2.5℃ or ±0.75％t
III –200–40 ±2.5℃ or±1.5％t
type J I –40–750 ±1.5℃ or ±0.4％t
II –40–750 ±2.5℃ or ±0.75％t
type T I –40–350 ±0.5℃ or± 0.4％t
II –40–350 ±1.0℃ or± 0.75％t
III –200–40 ±1.0℃ or± 1.5％t
NiCr-AuFe0.07 I –270–0 ±0.5℃
II ±1.0℃

 

Specification of alloy wire

 

Anode Cathode Diameter(mm) Maximum Temperature(℃)
name code name code long-time using short-time using
NiCr10(Chromel) KP NiSi3(Alumel) KN Φ0.3 700 800
Φ0.5 800 900
Φ0.8  Φ1.0 900 1000
Φ1.2  Φ1.6 1000 1100
Φ2.0  Φ2.5 1100 1200
NiCr14.2Si NP NiSi4 NN Φ3.2 1200 1300
NiCr10(Chromel) EP CuNi45(Copel) EN Φ0.3  Φ0.5 350 450
Φ0.8  Φ1.0  Φ1.2 450 550
Φ1.6  Φ2.0 550 650
Φ2.5 650 750
Φ3.2 750 900
Fe(Iron) JP CuNi45(Copel) JN Φ0.3  Φ0.5 300 400
Φ0.8  Φ1.0  Φ1.2 400 500
Φ1.6  Φ2.0 500 600
Φ2.5  Φ3.2 600 750
Cu(Copper) TP CuNi45(Copel) TN Φ0.2  Φ0.3 150 200
Φ0.5  Φ0.8 200 250
Φ1.0  Φ1.2 250 300
Φ1.6  Φ2.0 300 350

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Type of thermocouple bare wire
       Type        Bare wire        Working Enviroment        Termperature (°C)
       K        NiCr        Oxidizing        -200        1260
       NiSi        Inert
       N        NiCrSi        Oxidizing        -200        1260
       NiSi        Oxidizing
       E        NiCr        Oxidizing        -200        900
       CuNi        Oxidizing
       J        Fe        Oxidizing        -40        750
       CuNi        Reducing,inert,vacuum
       T        Cu        Oxidizing,vacuum        -200        350
       CuNi        Reducing,inert
 Max temperature of thermocouple bare wire

 

       Type        Φ3.26mm        Φ1.63mm        Φ1.00mm        Φ0.80mm        Φ0.50mm        Φ0.30mm
       K        1050°C        930°C        900°C        860°C        800°C        750°C
       E        860°C        800°C        750°C        700°C        660°C        620°C
       T        400°C        360°C        320°C        280°C        250°C
       J        760°C        760°C        720°C        680°C        650°C        600°C
       N        1100°C        1010°C        960°C        930°C        890°C        840°C
 
Standard of thermocouple bare wire
 IEC tolerance

                               

       Type        Operating temperature range        Tolerance
       Long        short        Grade        Temperature        Tolerance
       K        1200        1300        I        -40~1100′         ±1.5℃ or ±0.4%t
       II        -40~1300′         ±2.5℃ or ±0.75%t
       N        1200        1300        I        -40~1100′         ±1.5℃ or ±0.4%t
       II        -40~1300′         ±2.5℃ or ±0.75%t
       E        750        900        I        -40~800′         ±1.5℃ or ±0.4%t
       II        -40~900′         ±2.5℃ or ±0.75%t
       J        600        750        I         0~75         ±1.5℃ or ±0.4%t
       II         ±2.5℃ or ±0.75%t
       T        300        350        I        -40~350′         ±0.5℃ or ±0.4%t
       II         ±1℃ or ±0.75%t
       III        -200~40′         ±1℃ or ±1.5%t
 
ANSI E-230 tolerance

 

       Type        Temperature range        limits of error
       standard        special
       T        (0 to 133)℃[32 to 270]℉
(133 to 350)℃[270 to 662]℉		        ±1℃[2℉]
±0.75%		        ±0.5℃[1℉]
±0.4%
       J        (0 to 293)℃[32 to 559]℉
(293 to 750)℃[559 to 1382]℉		        ±2.2℃[4℉]
±0.75%		        ±1.1℃[2℉]
±0.4%
       E        (0 to 340)℃[32 to 644]℉
(240 to 900)℃[644 to 1652]℉		        ±1.7℃[3℉]
±0.5%		        ±1℃[2℉]
±0.4%
       K        (0 to 293)℃[32 to 559]℉
(293 to 1250)℃[559 to 2282]℉		        ±2.2℃[4℉]
±0.75%		        ±1.1℃[2℉]
±0.4%
       N        (0 to 293)℃[32 to 559]℉
(293 to 1250)℃[559 to 2282]℉		        ±2.2℃[4℉]
±0.75%		        ±1.1℃[2℉]
±0.4%

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