To ensure the accuracy and reliability of measurements, it is essential that the thermocouple is adequately protected from mechanical and chemical influences. One popular protection solution is ceramic sheaths, which offer many advantages. In the following article, we discuss the properties and applications of ceramic sheath thermocouples and share practical tips for their use and maintenance. Check it out!
Factors chemical factors such as corrosion and chemical reactions, among others, and mechanical factors such as strong vibrations, impacts and stresses, among others, can lead to measurement errors. In order to minimise their impact on the accuracy of temperature measurements with thermocouples, thermal shields must be selected accordingly. Various types of protection tubes are available on the market, including ceramic, metal, quartz and graphite. The choice of thermocouple protection tube material depends on the individual characteristics of the application. In this article, we will focus on ceramic sheaths, due to their exceptional resistance to high temperatures.
Ceramic sheathed thermocouples are an effective form of protection in temperature measurement. Ceramic sheaths not only provide high temperature resistance, but also protect thermocouples from mechanical and chemical influences. Thanks to their robustness, ceramic sheaths allow precise measurements even under extreme conditions. Compared to other types of sheaths, ceramic sheaths also stand out for their cleanliness, minimising reactions with measuring substances and ensuring a high standard of purity in the measurement process.
Ceramic sheath allows the thermocouple to be used in high temperatures and aggressive chemical environments
Choosing the right ceramic sheath is important for the precision and reliability of measurements under specific conditions. In the case of high temperatures, ceramic shields with high temperature resistance enable accurate measurements in extreme ranges. They are extremely effective protection in aggressive chemical environments, where chemical reactions can affect the accuracy of measurements.
It is also important to match the type and size of ceramic sheath to the specific type of thermocouple (e.g. K thermocouple) to ensure proper protection. Finally, structural factors such as the stability and mounting of the sheath must be considered to avoid vibration and deformation that could affect measurements.
The ceramic covers are resistant to high temperatures of up to 1600°C, making them the optimum choice for various types of industrial furnaces
Ceramic sheathed thermocouples are used in a variety of industrial sectors. These thermowells are particularly suited to high temperatures of up to 1600°C, aggressive chemical environments and where high standards of cleanliness are required. Here are some examples:
Ceramic thermocouple covers are used, among others, in aluminium smelting furnaces in the automotive industry
Here are some practical tips for using ceramic sheath thermocouples:
Ceramic sheaths are an effective protective solution for thermocouples, offering a number of advantages and a wide range of applications in industrial furnaces, among others. Their main advantages are:
