Cameron Scanner 2000 microEFM, Hardware User Manual

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A-4
Appendix A Scanner
®
2000 microEFM
Communications Adapter (CSA Div. 1 or Div. 2, ATEX Zone 1)
The explosion-proof communications adapter ( Figure A.7, page A-4 ) 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 a Scanner 2000, it is factory installed. It may be relocated to either conduit opening in the
instrument housing. Separate part numbers are provided for CSA and ATEX models, as the ATEX model is
constructed with ATEX-approved materials.
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. A variety of converter cable options are listed in the Spare
Parts list of this manual ( see page 83 ).
The adapter is shipped pre-assembled in the Scanner 2000 when it is ordered with the unit. The installed
adapter is comprised of an RS-485 adapter socket, a blanking plug, and a union nut. A plug connector that
mates with the RS-485 adapter socket when the adapter is in use is shipped with the device (uninstalled).
This plug connector should be wired to an RS-485 converter cable, and stored with the cable when the COM
adapter is not in use. Wiring instructions for connecting the plug connector to an RS-485 converter cable are
provided in Figure A.9, page A-5 .
Adapter socket
Union nut
Blanking plug
Figure A.7—Explosion-proof communications adapter
3.95
(100.4)
6.81
(172.9)
Figure A.8—Dimensions of explosion-proof communications adapter; inches (mm)