Precise measurements in demanding and high-temperature industrial environments - these are the conditions in which N-type thermocouples are used. In this blog post, we discuss the characteristics of this specialised temperature sensor, explaining its construction, properties and various applications. We also compare it with other types of thermocouple to help you choose the optimal thermocouple for your application. I invite you to read on to explore this temperature sensor in greater depth!
An N-type thermocouple is a type of temperature sensor that belongs to the thermocouple family. It is a device that uses the Seebeck phenomenon, which involves the generation of an electrical voltage in a circuit composed of two different metals (or alloys) when their connections are subjected to different temperatures. The N-type thermocouple consists of two specific materials: a nickel-chromium-silicon alloy (Nicrosil) and a nickel-silicon alloy (Nisil).
Sheathed thermocouple with connector (901240) with measuring inserts type J, K, L or N
These temperature sensors are used for the precise measurement of temperatures over a wide measuring range, reaching from about -270°C to about 1300°C. The alloys from which they are made provide them with exceptional thermoelectric properties and high resistance to corrosion and oxidation. These features make N-type thermoelectric sensors suitable for applications in harsh industrial environments, such as metallurgy and the chemical industry.
Type N thermocouples are particularly valued in applications requiring precise and reliable temperature measurements in difficult conditions. Here are the five most important applications:
Type N thermocouples are used in the steel industry
Sheathed thermocouple with head type B (901220) with measuring inserts type J, K, L or N
Compared to other commonly used thermocouples such as types K, J, and T, the type N thermocouple stands out for its better thermal stability and resistance to various forms of degradation, such as corrosion or oxidation. For example, compared to type K thermocouples, which are also used at high temperatures, type N thermocouples are more resistant to so-called "drift" when exposed to high temperatures for an extended period.
These thermoelectric sensors are chosen for their high accuracy and stability in difficult conditions, while other types are better suited depending on application requirements such as temperature range, corrosion resistance, and cost.
My name is Ewelina Szmit and I have been working in the field of content marketing for several years, combining my professional skills with my passion for writing. I believe that even the most technical topics can be presented in a way that is interesting and accessible to everyone. Outside of work, I develop my creativity by making newspaper collages. I like to spend my free time most actively, walking my dog or running.