5.4.2 Manual O
2
calibration using the Field Communicator -
HART
To perform a manual O
2
calibration using the HART Communicator or AMS, use the
following procedure.
If necessary, refer to Section 6.3 for the HART menu tree.
Note
To select a menu item, either use the Up and Down keys to scroll to the menu item and press the
Right key or use the number keypad to select the menu item number.
Procedure
1. Select DIAG/SERVICE from the DEVICE SETUP menu.
2. Select CALIBRATION from the DIAG/SERVICE menu.
3. Select CAL CONTROL from the CALIBRATION menu.
4. Select CAL METHODS from the CAL CONTROL menu.
5. From the CAL METHODS menu, select the type of calibration desired: O2 Calibration.
In the first O2 Calibration screen, a Loop should be removed from
automatic control warning appears.
6. Remove the transmitter from any automatic control loops to avoid a potentially
dangerous operating condition and press OK.
7. The calibration screen should look like the following. Press OK to continue.
•
OCX: TAG NAME
•
STATUS: Idle
•
TIME REMAIN: 0s
•
O2: 0.4%, 85.95mV
•
OK/NEXT to Select
•
ABORT/CANCEL to Exit
8. 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 item from the list and press ENTER.
•
OCX: TAG NAME
•
SELECT ACTION
a.
START/NEXT CALSTEP
b.
ABORT CAL
c.
EXIT CAL
9. When the Calibration Status is at the AppO2Low step, switch on O
2
low gas. Verify
that the O
2
concentration measured matches the O2 LOW GAS parameter in Setup.
Press OK when ready.
Calibration
72 OCX 8800
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