美***OMEGA欧米茄DRA-MDM-11模拟多路复用/解复用系统

通过***对导线精确传输多达16个4-20 mA过程电流回路信号

节省电缆和安装成本

±0.1%精度

故障报警

固态技术

美国OMEGA欧米茄DRA-MDM-11模拟多路复用/解复用系统

DRA-MDM-11是一个多路复用/分路系统，它通过一对电线精确传输模拟信息。多路复用器单元（DRA-M-11）可接受多达16个4-20 mA的过程电流输入。多路复用输入以高达1000道/秒的扫描速率传输到解复用器单元（DRA-DM-11），传输距离为2公里（1.2英里）。在解复用器中，电流输出以与输入相同的顺序和幅度进行复制。分路器配有警报（闪烁的LED和干触点输出），当由于多路复用器故障、电缆不连续或短路而导致通信中断时，该警报将运行。使用DRA-MDM-11 mux/demux系统可以显著降低新安装的布线成本，或在现有安装中大幅扩展模拟数据传输能力。

美***OMEGA欧米茄DRA-MDM-11模拟多路复用/解复用系统

Transfer up to Sixteen 4-20 mA Process Current Loop Signals Accurately Via a Single Pair of Wires

Saves Cable and Installation Costs

± 0.1% Accuracy

Failure Alarm

Solid-State Technology

The DRA-MDM-11 is a mux/demux system which transfers analog information accurately via a single pair of wires. The multiplexer unit (DRA-M-11) accepts up to sixteen 4-20 mA process current inputs. The multiplexed inputs are transferred to the demultiplexer unit (DRA-DM-11) at a scan rate of up to 1000 channels/sec up to a distance of 2 kilometers (1.2 miles). At the demultiplexer the current outputs are reproduced in the same order and magnitude as the inputs. The demultiplexer is provided with an alarm (flashing LED and dry contact output) which is operated whenever there is any interruption in communication due to mux failure, cable discontinuity or short-circuit. Use of the DRA-MDM-11 mux/demux system enables a considerable reduction in cabling costs for a new installation or considerable expansion of analog data transfer capability in an existing installation.