Emerson Rosemount OCX8800A - Page 100

6.4.4 Calibrate O
2
and COe manually using the Field
Communicator: HART
®
To perform a manual O
2
and COe calibration using the Field Communicator or
AMS, use the following procedure.
Note
To select a menu item, use either Up or Down to scroll to the menu item and
press Right or use the number keypad to select the menu item number.
To return to a preceding menu, press the Left.
Procedure
1. Select CALIBRATION from the DIAG/SERVICE menu.
2. Select PERFORM CAL from the CALIBRATION menu.
3. Select CAL METHODS from the PERFORM CAL menu.
4. From the CAL METHODS menu, select the type of calibration desired: O2 and
COe Calibration.
In the first Calibration screen, a Loop should be removed from automatic
control warning appears.
5. Remove the transmitter from any automatic control loops to avoid a
potentially dangerous operating condition and press OK.
6. Set the main Calibration screen to the following values. Press OK to
continue.
• OCX: TAG NAME
• STATUS: Idle
• TIME REMAIN: 0s
• O2: 0.4%, 85.95mV
• COe: 0.20 ppm, 0.00 mV
• OK/NEXT to Select
• ABORT/CANCEL to Exit
7. From the SELECT ACTION screen, select START/NEXT CALSTEP to continue
calibration, select ABORT CAL to abort calibration, or select EXIT CAL to exit
calibration. Select one from the list and press ENTER.
• OCX: TAG NAME
• SELECT ACTION
— 1. START CAL/NEXT CALSTEP
— 2. ABORT CAL
— 3. EXIT CAL
8. When the Calibration Status is at the AppO2Low step, switch on O
2
low gas.
Verify the O
2
concentration measured matches the O2 LOW GAS parameter
in Setup. Press OK when ready.
Calibration
Manual
December 2022 00809-0500-4880
100 Emerson.com/Rosemount