最近几天出差忙锅炉铝液温度测试,采用max6675接K式热电偶,不过通过三线接口读出来的数据始终不对,希望大家帮看看问题所在,750度的温度测量出来只有280度左右,但是做了三块板子,测量结果都是一样的.程序如下:-Busy traveling the last few days testing the boiler temperature of molten aluminum, then K-type thermocouple used max6675, but the three-wire interface to read out the data is always wrong, hope you help to see the problem, the temperature of 750 degrees measured only 280 degrees, But the board made three measurement results are the same. procedures are as follows: