+86 132 2068 7827
+86 132 2068 7827
Jul. 26, 2023
The "Si3N4" thermocouple protection tube refers to a type of thermocouple sheath or tube made from silicon nitride (Si3N4) ceramic material. Thermocouples are temperature sensors used to measure high temperatures in various industrial processes. They consist of two dissimilar metal wires joined at one end, forming a junction. When exposed to a temperature gradient, a voltage is generated across the junction, which can be measured to determine the temperature.
In some high-temperature applications, the thermocouple wires need to be protected from the harsh environment they are measuring. This is where thermocouple protection tubes come into play. They encase the thermocouple wires, shielding them from corrosive gases, abrasive particles, and extreme temperatures, ensuring accurate and reliable temperature measurements.
Silicon nitride (Si3N4) is a ceramic material with excellent thermal and mechanical properties, making it suitable for use as a protection tube in demanding high-temperature environments. It has good thermal shock resistance, high-temperature strength, and chemical stability, making it an ideal choice for protecting thermocouples in applications such as metal processing, heat treatment, gas turbines, and other industrial processes that involve high temperatures and harsh conditions.
The Si3N4 thermocouple protection tubes provide an effective barrier between the thermocouple wires and the surrounding environment, allowing accurate temperature measurement without compromising the integrity of the thermocouple sensors.
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