Figure 3-2: Rosemount OCX8800 Defaults - FOUNDATION Fieldbus Electronics
A. Open
B. Closed
Switch default positions shown.
Verify that the following switch settings are correct for your transmitter
installation:
SW3: The factory sets this switch as follows:
• Position 1 not used.
• Position 2 not used.
Positions 3 and 4 must be set up as shown for proper software control of the
device heaters.
3.2 Initial power up
Allow adequate time (approximately 60 minutes) for the heaters to begin
operation and for the transmitter to reach normal operating temperature on
power up.
Normal operating temperature for the O
2
cell is 1357 °F (736 °C). Normal
operating temperature for the combustibles cell is 572 °F (300 °C). The normal
Configuration and start-up Manual
December 2022 00809-0500-4880
56 Emerson.com/Rosemount
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