Features of Tungsten-rhenium Thermocouple with High Sensitivity

The characteristics of the tungsten-rhenium thermocouple are: the hot electrode wire has a high melting point (3300 ° C), a low vapor pressure, and is easily oxidized; it has good chemical stability in a non-oxidizing atmosphere. The electromotive force is large, the flexibility is high, and the price is mainly low. At present, the non-contact method is mostly used to measure the temperature above 1600 ℃, but the error of this method is relatively large. For example, the real temperature can be accurately measured by the contact law. Among high-temperature thermocouples, precious metal thermocouples are expensive and the high temperature can only be below 1800 °C, while tungsten-rhenium thermocouples not only have a high temperature measurement limit, but also have good stability. Therefore, tungsten-rhenium thermocouples are used in metallurgy, building materials, aerospace , aviation and nuclear energy and other industries are widely used. my country's tungsten resources are abundant, and tungsten-rhenium thermocouples are cheap and can partially replace precious metal thermocouples (platinum-rhodium thermocouples). It is a promising temperature measurement data in the field of high temperature testing. Its high operating temperature can reach 2800 ℃, however, when it is higher than 2300 ℃, the data is scattered. Therefore, the operating temperature is preferably around 2000 °C. Tungsten-rhenium thermocouples are easy to oxidize and are suitable for use in inert or dry hydrogen, or to isolate them from oxygen with a dense protective tube. It cannot be used in carbon-containing atmosphere (for example, when used in an atmosphere containing hydrocarbons, it will be corroded when the temperature exceeds 1000 °C). Tungsten or tungsten-rhenium is easy to form stable carbides in carbon-containing atmosphere, which reduces its flexibility and causes brittle fracture. In the presence of hydrogen, it will accelerate carbonization. The anti-oxidation problem of tungsten-rhenium thermocouples has been a topic of concern to scholars at home and abroad, and they have been working hard to study and deal with them.

Everyone who has a temperature sensor manufacturers wants it to look RTD supplier. However, in order to achieve that, it normally involves investing in a temperature sensor manufacturers resistance temperature detector. Shanghai Jiutian Automation Equipment Co., Ltd can offer you the best solution.

There is always a question of how to RTD supplier, but have you ever thought about the price point? Go to Jiutian Temperature Products to get cost effective offer.

need fuel for energy,while temperature sensor manufacturers do not.

JVTIA provides a number of RTD supplier designed to handle temperature sensor manufacturers.