350022M 288055-01 BENTLY
350022M 288055-01 BENTLY
350022M 288055-01 BENTLY
SM412是SM系列硬件产品中的8通道带HART功能电压模拟量冗余输入模块，完成0~5V电压信号的采集。
SM412模块可与SM3412电流型（限流）模拟量冗余输入端子模块相连，实现具有冗余配置的现场0~22mA信号的采集，并可以与现场HART仪表进行通信。
SM3412端子模块通过227.3Ω的采样电阻将8路电流信号转换为0~5V范围内电压信号，送入SM412模块。当现场外接两线制HART变送器时，SM3412端子模块具有限流输出功能，通过内部跳线器使能。
SM412模块还可与SM3340端子模块相连，实现具有冗余配置的现场0~5V电压信号的采集。
SM412采用模块化设计，整体结构为盒式插件结构，机笼轨道安装，卡销固定。模块背板上的防混销唯一固定。
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