It analyses and studies the sequence faceplate block and the control instruments of difference about temperature. The two-position ON/OFF and three-position ON/OFF are studied in regulatory control.

• 文中分析研究了顺序面板功能块和温度差值控制仪表等,对连续控制中的两位与三位调节ON/OFF控制功能块使用进行了分析阐述。