ABB进口模块ci840a

ABB进口模块ci840a

1. 使用示波器法测量：将压力继电器的信号线连接到示波器的输入端，将示波器调节到直流耦合状态，并调节示波器的放大倍数，读取示波器上显示的压力信号值。

　　2. 使用数字万用表法测量：将压力继电器的信号线连接到数字万用表的电压测量端口，选择电压档位，读取数字万用表上显示的压力信号值。

　　3. 使用压力表法测量：将压力继电器接口与被测压力装置的输出接口相连，开启被测压力装置，读取压力表上显示的压力信号值。此方法比较适用于液体介质的压力测量。

　　4. 使用仿真器法测量：利用压力控制器链接与被测压力继电器相连接，设置需要测试的压力参数，观测比较被测压力继电器输出的电压与压力控制器的压力测量值。

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