内容
第 1 章 计划 .......................................................................................................................................1
1.1 改装仪表安装概述 ................................................................................................................................1
1.2 安装检查表 ...........................................................................................................................................1
1.3 最佳实践 .............................................................................................................................................. 2
1.4 仪表压降 .............................................................................................................................................. 2
1.5 电源要求 .............................................................................................................................................. 3
1.6 空间要求 .............................................................................................................................................. 6
1.7 执行仪表检查(安装前) .....................................................................................................................7
第 2 章 卸下 7835/7845 仪表 ............................................................................................................. 9
2.1 断开 7835/7845 仪表的接线 ................................................................................................................9
2.2 从管道中拆下仪表。 ..........................................................................................................................10
第 3 章 安装方式 ..............................................................................................................................12
3.1 安装仪表 ............................................................................................................................................ 12
3.2 旋转仪表上的电子部件(可选) ........................................................................................................13
3.3 旋转变送器上的显示屏(可选) ........................................................................................................14
第 4 章 接线 .....................................................................................................................................16
4.1 可用的输出端子和接线要求 ............................................................................................................... 16
4.2 改装接线:端子-输出转换 ................................................................................................................. 17
4.3 防爆区域或非危险区域输出接线 ........................................................................................................18
4.4 本安输出接线 .....................................................................................................................................20
4.5 用于分体式安装 2700 FOUNDATION 现场总线
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选项的处理器接线 .................................................. 28
4.6 连接到外部设备(HART 多点) ......................................................................................................... 32
4.7 信号转换器和/或流量计算机接线 ...................................................................................................... 35
第 5 章 接地 .....................................................................................................................................38
内容
安装手册 i