热丝法传感器性能取决于热丝的材料和规格，同时受到传感器的结构和测量数学模型的影响。选用新的热丝材料，对传感器结构作合理改进，采用引线补偿和温度补偿完善其数学模型，研制出新型传感器。应用于大型井式渗碳炉气氛控制取得了良好的效果，其测量准确性和精度得到提高，与传统结构传感器相比寿命长、灵敏度和重现性得以改善。 Hot wire method sensor performance depends on the material and specifications hot wire, both by the sensor structure and measurement of mathematical models. Selection of new hot wire material, the sensor structure for reasonable improvement, using lead compensation and temperature compensation to improve its mathematical model, developed a new type of sensor. Applied to large-scale pit carburizing furnace atmosphere control has achieved good results, the measurement accuracy and accuracy are improved, compared with the traditional structure of the sensor long life, sensitivity and reproducibility can be improved.