Thermocouple wire production
Technical characteristics
Thermocouple wire is made of heat-resistant alloys. Alumel alloy is very ductile, alumel retains its strength for a long time. Constantan has a high electrical resistance independent of temperature. Kopel like contantan has high thermo-EMF, minimum thermal expansion coefficient, high resistance to corrosion. Chromel alloy has high heat resistance and is characterized by a wide range of thermal EMF changes.
Physical properties of alloys
| Alloy | Density g/cm³ | t° of melting: | t° annealing: | Modulus of elasticity, GPa |
| Alumel | 8,67 | 1440°C | 950°C | 130 |
| Kopel | 8,9 | 1150°C | 800-850°C | 166 |
| Constantan | 8,8 | 1250°C | 950°C | 165 |
| Chromel | 8,7 | 1420°C | 800 - 900°C | 186 |
Relevance
Due to their high performance qualities, thermocouple wire is widely used in modern pyrometry. With the advent of this new generation material, it is possible to improve many technological processes where high temperatures and aggressive media are involved in production.
Use
Thermocouple wire is designed for the production of thermocouples, as well as compensation wires in the measuring and transducer devices of automation systems, which operate at very high temperatures. A thermocouple consists of a pair of different conductors that are soldered at one end and placed in a medium designed to measure temperature ("hot contact"), while the free two ends are placed in a thermostat (so-called "cold contact").
Types of thermocouples and measuring ranges
T° 200 - 1000 °C - alumel-chromel (TXA);
t° 200 - 800 °C - copel - chromel (TXA);
t° -40 to 900 °C - constantan - chromel (TXA);
t° up to 300 °C - copper - constantan;
t° from 0 to 760 °C - iron-copper;
t° up to 3000 °C - tungsten-rhenium.
Measures very low cryogenic temperatures - iron-constantan;
Supply
Supplier Evek GmbH offers to buy thermocouple wire, the price is the best in this segment of rolled products. We offer to buy thermocouple wire, from specialized warehouses of Evek GmbH with delivery in any city. Full compliance with modern standards. The supplier Evek GmbH invites you to partner cooperation.
Buy, bargain price
Supplier offers to buy thermocouple wire, price - due to technological features of production without including additional costs. On the website of the supplier Evek GmbH information about the latest arrivals of products. We have the best price-quality ratio for thermocouple wire. Timely delivery is ensured by representatives in Eastern European cities. Supplier Evek GmbH offers today to buy thermocouple wire, the price is optimal from the supplier.
