N型热电偶热电势稳定性的研究

The thermol stability research for N type thermocouple

N型热电偶是近20年廉金属热电偶合金材料研究方面取得的重要成果,有明显的优点。而作为温度传感器,热电偶在长期使用过程中的热电稳定性是人们最为关心的问题。本文通过对N型热电偶合金丝及N型铠装热电偶的长期稳定性试验的考核,结果无论是用氧化铝绝缘的裸丝N型热电偶,还是铠装N型热电偶,在有关标准推荐的长期最高工作温度下试验,热电偶均呈现了良好的长期稳定性。故表明N型铠装热电偶的长期稳定性能良好,大有取代K型热电偶成为工业测温的主要热电偶品种的趋势。

In recent years, N type thermocouple is the importance advance in research of base thermocouple alloy materials. As the temperature sensor, the long term thermol stability is payed most attention. The articul test he long term thermol stability of N type thermocouple and armoured N type thermocouple, the experiment shows that both N type thermocouple and armoured N type thermocouple have the good long term, high temperature thermol stabiliy reference to the standard. It is good performance express. It has the propobility to be instead of K type thermocouple in many applications.