| Type: | Insulated |
|---|---|
| Conductor Type: | Solid |
| Application: | Temperture Measurement |
| Conductor Material: | + Chromel -Alumel |
| Sheath Material: | Fiberglass |
| Insulation Material: | Fiberglass |
| Samples: |
|---|
| Customization: |
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Audited Supplier Thermocouple Extension Cable JX-FB-FB-SS304-0.22R DIN43710 Standard Plywood Spool Package
TYPE J (Iron vs Constantan) is used in vacuum, oxidizing, inert or reducing atmospheres. Iron element oxidizes rapidly at temperatures exceeding 538°C, and therefore heavier gauge wire is recommended for longer life at these temperatures.
1. Chemical Composition
| Material | Chemical composition (%) | ||||
| Ni | Cu | Si | Iron | Al | |
| JP(Iron) | 100 | ||||
| JN(Constantan) | 45 | 55 | |||
2. Physical Properties and Mechnical Properties
|
Material |
Density(g/cm3) |
Melting point(ºC) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
| JP(Iron) | 7.8 | 1402 | >240 | 12.0(20ºC) | >20 |
| JN(Constantan) | 8.8 | 1220 | >390 | 49.0(20ºC) | >25 |
3. EMF Value Range at Different Temperature
| Material | EMF value (μV) | |||||||||||
| 100ºC | 200ºC | 300ºC | 400ºC | 500ºC | 600ºC | |||||||
| JP-JN | 5187~5351 | 10696~10862 | 16244~16410 | 21760~21936 | 27281~27505 | 32962~33242 | ||||||
| EMF value Vs Pt(μV) | ||||||||||||
| 700ºC | 750ºC | 760ºC | 800ºC | 900ºC | 1000ºC | |||||||
| 38958~39306 | 42089~42473 | 42725~43113 | ||||||||||
In actual temperature measurement, usually there are long measuring distance with the measuring device, a thermocouple compensation wire is generated to compensate the temperature difference caused by the temperature change between the measuring device and the thermocouple connecting piece.
The compensation cable has the following advantages: improving thermocouple temperature measurement line physical properties and mechanical properties; improving the measurement line flexibility and making the connection convenient by using multi-strand core or small-diameter compensation wire; easy to shield external interference; reducing measuring lines cost.
Thermocouple Cable Grade
A:Extension Grade Cable
Whose wire composition is totally as the same as the thermocouple wire, remarked by the letter"X"after the thermocouple symbol number, such as"KX""JX""TX"
B:Compensation Grade Cable
Whose wire composition is different from the thermocouple wire, but its wire electromotive force (EMF) value is the same as thermocouple wire only at 0-100ºC or 0-200ºC. It remarked by the letter"C"after the thermocouple symbol number, such as"KC""JC""TC"
|
Performance |
Extension Grade | Compensation Grade |
|
Material |
Same as thermocouple | Different from thermocouple |
| EMF Value Feature | Same as the thermocouple's at certain temperature range | Same as the thermocouple's |
| Deviation Curve | Nonlinear, varies with temperature |
Linear |
| Working Temperature Range | Limited(usual at 100ºC) | Unlimited(depend on insulation material temperature bearing) |
| Line Resistance | Low resistance | High resistance |
| Compensation Contact Interference | Different contactor material may cause interference |
None |
|
Accuracy |
Low |
High |
|
Price |
Low |
High(about 1-2 times higher) |
2. Size Range Reference
3. Production Progress
4. Package Reference
5. Our Service
6. Questions and Answers
Q1:How can I contact with your company?
A1:We have multiple communication channels
Q2:Do you provide free samples?
A2:Yes,we can provide free samples for your testing,but buyer should bear the shipping costs.
Q3:What is your payment terms?
A3:30% in advance,balance after receiving the copy of B/L. T/T,L/C,Western Union,Paypal is OK.
Q4:What is your lead time?
A4:On normal condition,the lead time is 7 days after the payment. Special order or quantity is subject to the negotiation.
Q5:What is your working time?
A5: Monday to Firday: 9:00-12:00,13:30-17:30, rest in weekend.
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Audited Supplier 
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