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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
3-2
Verify Configuration - HART Electronics
There are three switches on the microprocessor board which are user
configurable for the Hazardous Area OCX 8800 with HART electronics
(Figure 3-1). SW1 determines if the O
2
4-20 mA signal is internally or
externally powered. SW2 determines if the COe 4-20 mA signal is internally or
externally powered. SW3 sets the rail limits for the O
2
and COe 4-20 mA
signals and configures the sample line heater control circuit. All switches are
accessible through holes in the electronics box.
Verify that the following switch settings are correct for your Hazardous Area
OCX 8800 installation:
Figure 3-1. Hazardous Area OCX 8800 Defaults - HART Electronics
Remove power from the Hazardous Area OCX 8800 before changing defaults. If defaults
are changed under power, damage to the electronics may occur.