Emerson Rosemount Oxymitter 4000 Reference Manual page 121

Reference Manual
00809-0100-4340
Figure 8-4: O2 T/C Open Message on LOI
Recommended actions
1. Remove power. Unscrew and remove the LOI module from the electronic assembly.
2. Reconnect power to the transmitter.
3. Perform the recommended actions in
8.5.2 Fault 2, Shorted Thermocouple
The figure below show the electronic assembly for a transmitter with a membrane keypad
and a transmitter with an LOI.
The transmitter with the membrane keypad also shows J1 and test points TP1 through
TP6, located on the microprocessor bard, below the membrane keypad on the LOI
module.
Rosemount Oxymitter 4000
Fault 1, membrane keypad.
Troubleshoot
October 2019
121