Type T thermocouple cable TPX and TNX Fiberglass insulated
TYPE T (Copper vs Constantan) is used or in an oxidation, inert or reduced atmosphere or in vacuum. It has highly corrosion with atmospheric moisture and condensate corrosion, and high stability is exhibited at low temperatures. It is the only type with error-limited uses for low temperature temperatures.
1. Chemical Composition
| Material | Chemical composition (%) |
| Ni | Cu | Si | Iron | Al |
| TP(Copper) | | 100 | | | |
| TN(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 (%) |
| TP(Copper) | 8.9 | 1084 | >196 | 1.71(20ºC) | >30 |
| TN(Constantan) | 8.8 | 1220 | >390 | 49.0(20ºC) | >25 |
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.
Package
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"
- For cost consideration, when the tested temperature under 200ºC, compensation grade cable is preferred. But compensation grade cable will occur enormous tested temperature value deviation if the tested temperature above 200ºC. The higher the tested temperature, the greater deviation be.
- For compensation grade cable, the max testing temperature is less than 200ºC, the bigger the cable, the smaller the signal loss.
- Extension cable and compensation cable comparison:
| 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) |
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will we arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.
6.How do you guarantee the quality?
We have QC who are responsible for tracking and monitoring whole production process, and we are willing to accept customer‘s testing.
7. What's our working time?
We will give you reply through email/phone Online chat tool within 24 hours. No matter working day or holidays.
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Type T Thermocouple Cable TPX And TNX Fiberglass Insulated Images
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