ABB DCS模块ai890
1. 先确定调整的压力范围和标准值；
2. 注意关闭原有压力继电器的电源；
3. 在调整压力继电器之前，需要先确保气路中没有压力，防止调整时发生意外；
4. 尝试找到压力继电器压力调节螺旋，通常在继电器的一个端口上；
5. 通过旋转螺旋来实现压力调节，根据所需的压力标准值调整；
6. 在调整完毕后，检查气路是否有泄漏，重新调整并测试指针位置等参数。
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