Cameron NUFLO MC-III EXP, User Manual

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A-3
MC-III™ EXP Flow Analyzer Appendix A
Additionally, when the log viewing function times out, the accumulated total is automatically saved to
memory.
Saving the Total.
When the daily log display times out, the MC-III EXP will automatically save the
accumulated total.
Explosion-Proof Communications Adapter
The explosion-proof communications adapter provides an RS-485 connection for connecting a laptop or PC to
the instrument without removing the instrument cover. When the adapter is ordered with an MC-III EXP, it is
factory installed. The installed adapter is comprised of an RS-485 adapter socket, a blanking plug, and a union
nut (Figure A.4). It may be relocated to either conduit opening in the instrument housing.
Caution: This adapter is available in two models—a plated steel CSA-approved model and a brass
ATEX-approved model.
An RS-232 to RS-485 converter cable (available from Cameron’s Measurement Systems Division) is required
for connecting the adapter to a laptop computer. See
MC-III Parts List (CSA), page 97,
and
MC-III Parts List
(ATEX), page 98,
for converter cable options.
Adapter socket
Union nut
Blanking plug
Figure A.4—Components of explosion-proof communications adapter
Assembly of the Plug Connector
A plug connector that mates with the RS-485 adapter socket is shipped with the device (uninstalled). This
plug connector should be wired to an RS-485 converter cable as shown in
Figure A.5, page A-4,
and stored
with the cable when the COM adapter is not in use.