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.
† Price are shown in RMB.
Note: Comes with complete operator’s manual. Includes both DRA-M-11 multiplexer and
DRA-DM-11 demultiplexer.
