如何做连续式热处理炉炉温均匀性测试？

该炉共分8个区，最高使用温度为960℃，主要用于正火和退火。
求教：
如选择内部测试，需要哪些设备？
如外部测试，哪些单位在做？费用大致如何？可否推荐几个？
谢谢！
离问题结束还有

适当增加Mn的含量

目前两种方法：一种是直接绑热电偶伸入炉中，一种就是用到黑匣子。
如果保护气氛含有活性碳原子，就必须用黑匣子了，热电偶做完一次就毁了。
不过连续炉最好用黑匣子，因为开关炉门的影响，热电偶测试很不方便，过程中要垫起内炉门，防止压坏热电偶。

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目前两种方法：一种是直接绑热电偶伸入炉中，一种就是用到黑匣子。
如果保护气氛含有活性碳原子，就必须用黑匣子了，热电偶做完一次就毁了。
不过连续炉最好用黑匣子，因为开关炉门的影响，热电偶测试很不方便，过程中要垫起内炉门，防止压坏热电偶。