Description
DCS网络的结构形式大致是三种，分别是总线形、环形和星形。星形结构通常只用于小系统。通讯协议有令牌广播式，问询式和存储转发式。问询式协议的网络要有交通指挥器。所有人机界面要向控制器请求数据时，必需通过交通指挥器，由交通指挥器来向控制器请求数据。控制器才能发送信息给人机界面。
NASH CL3001 VACUUM PUMP 3000 CFM 10″ HG BELT DRIVE
Republic Regenerative Blower HRB1402 ring side channel
Up to 776 cfm and 118″H2O (Pressure) or 134″H2O(Vacuum)
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LPHA75340 SIHI VACUUM PUMP, 50 HP
LPHA75340 SIHI VACUUM PUMP, 50 HP
Edwards iQDP80 Dry Vacuum Pump Rebuilt
One year parts and labor warranty.
