Withstand 200C Thermocouple Extension Wire Type J KCA KCB Telfon Insulation
Thermocouple wire or extension grade wire is recommended to be used to connect thermocouples to the sensing or control instrumentation. The conditions of measurement determine the type of thermocouple wire and insulation to be used. Temperature range, environment, insulation requirements, response, and service life should be considered.
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.
TYPE 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.
TYPE T (Copper vs Constantan) is used or service in oxidizing, inert or reducing atmospheres or in vacuum. It is highly resistant to corrosion from atmospheric moisture and condensation and exhibits high stability at low temperatures. It is the only type with limits of error guaranteed for cryogenic temperatures.
TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizingatmospheres. Produces the highest EMF per degree o any standardized thermocouple.
Type N thermocouple (Ni Cr Si-Ni Si Mg) is the latest base metal thermocouple, developed to improve the drawbacks that type K thermocouple has. The main chemical composition of positive leg Nicrosil(NP) is Ni: Cr: Si≈84.4: 14.2: 1.4; negative leg Nisil (NN) is Ni: Si: Mg≈95.5: 4.4: 0.1. Type N thermocouple also be used in the similar atmospheres that type K works, and the operating temperature range is -200~1300 °C.
| Conductor Name | Type | Applicable thermocouple type |
| Cu-Constantan0.6 | SC or RC | S or R |
| Iron-constantan22 Copper-Constantan40 Chromel-Ni(Alumel) | KCA KCB KX | K |
| Iron-constantan18 NiCr14Si-NiSi4Mg | NC NX | N |
| NiCr10-Constantan45 | EX | E |
| Iron-Constantan 45 | JX | J |
| Copper-Constantan 45 | TX | T |
Properties of insulation materials
| Material Type | Continuous Operating Temp. / ℃ | Abrasion Resistance | Chemical Resistance | Moisture Resistance | Solvent Resistance | Flame Resistance |
| PE | 80 | Good | Excellent | Excellent | Excellent | Poor |
| PVC | 105 | Very Good | Very Good | Good | Fair | Excellent |
| TPE | 125 | Excellent | Poor | Good | Good | Excellent |
| SILICONE | 200 | Good | Good | Excellent | Excellent | Excellent |
| FEP | 200 | Excellent | Excellent | Excellent | Excellent | Excellent |
| PFA | 260 | Excellent | Excellent | Excellent | Excellent | Excellent |
| PTFE | 260 | Good | Excellent | Excellent | Excellent | Excellent |
| B-GLASS FIBER | 260 | Good | Good | Fair | Good | Good |
| G-GLASS FIBER | 510 | Poor | Good | Good | Excellent | Excellent |
| Q-GLASS FIBER | 704 | Fair | Good | Good | Excellent | Excellent |
| VITREOUS SILICA FIBER | 1100 | Good | Good | Excellent | Excellent | Excellent |
| MINERAL INSULATION* | 1100 | Excellent | Excellent | Good | Excellent | Excellent |
| Packaging Details | Roll with plastic film wrapped and carton package |
|---|---|
| Delivery Detail | Shipped in 7 days after payment |
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