文档介绍：SRD991 智能电气阀门定位器 SRD9 91是设计为操纵气动阀门执行机构的智能电气阀门定位器。用控制系统和电子控制装置操作, 采用叠加在 4~ 20 mA 模拟控制信号上的 HART 通信信号。连接 I/A Series 系统,采用 数字通信, 可以实现纯数字化操作。性能特点?自行校验的自动起动功能?自诊断? HART 或 通信?用本机按键、手持终端、计算机或 I/A Series 系统进行组态?耗气量低?8至 120 mm ( 至 in)直行程?最大至 95°角行程?气源压力最大至 6 bar ( 90 psig ) ?单作用或双作用执行机构?机械行程指示?反极性保护和联锁二极管?直接安装在直行程执行机构上或者按照 IEC 534 第 6部分( NAMUR )安装?按照 VDI/VDE 3845 安装在角行程执行机构上?外壳保护等级 IP 65和 NEMA 4X ?防爆等级: 按 CENELEC 为 EEx ia IIC T4 ,或者按 FM 和 CSA 为“本质安全”其他设备: ?两个开关量控制输入“开/关”和“保持上次值”?阀位反馈 4~20 mA ?两个电气分隔的限位开关?独立于设备电子器件的内置电感限位开关附件: ?气源和输出压力的压力指示表?增压器继电器仪器的修理和维护必须由具备资质的人员进行! 使用说明书 MI EVE0105 A-(e n) 目录章节:标题··········································· 页码 1 操作方法······································ 3 概述·················································· 3 框图·················································· 3 操作·················································· 3 模拟方式·········································· 3 数字方式·········································· 4 软件················································ 4 2 铭牌···············