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Oxymitter 4000
7-8
Instruction Manual
IM-106-340, Rev. 4.0
May 2006
HART COMMUNICATOR
O
2
CAL METHOD
Use the following procedure to perform a calibration using the HART Commu-
nicator. If necessary, use the menu tree in Figure 7-3 (sheet 1 of 3) for
reference.
NOTE
To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number. To return to a preceding menu, press the left arrow
key.
1. From the PERFORM O
2
CAL screen, select menu item 1, O
2
CAL, to
access the O
2
calibration procedure.
2. In the first O2 CAL screen, a "Loop should be removed from automatic
control" warning appears. Remove the Oxymitter 4000 from any auto-
matic control loops to avoid a potentially dangerous operating condition
and press OK.
3. The next several screens indicate the calibration status. At each of the
following status prompts, select menu item 2, NEXT CAL STEP:
COMPLETE
CAL RECOMMENDED
APPLY GAS 1
GAS 1 FLOW
4. At this point, select menu item 4, EXIT, to leave the O2 CAL procedure.
5. From the PERFORM O2 CAL screen, view menu item 3, CALSTATE, to
monitor the calibration status as it updates. Or, access the O2 CALI-
BRATE screen and select menu item 2, O2 CAL STATUS, to view menu
item 1, CALSTATE; menu item 2, TIMEREMAIN; and menu item 3,
PRESENT O2, as the calibration status updates.
6. When CALSTATE displays APPLY GAS 2, return to the O2 CAL
procedure.
7. When the "Loop should be removed from automatic control" warning
appears, return the Oxymitter 4000 to the automatic control loops previ-
ously removed and press OK.
8. At the STOP GAS status prompt, select menu item 2, NEXT CAL STEP.
When the status displays PURGING, select menu item 4, EXIT, to leave
the O2 CAL procedure.
9. From the PERFORM O2 CAL screen, view menu item 3, CALSTATE, to
monitor the calibration status as it updates. Or, access the O2 CALI-
BRATE screen and select menu item 2, O2 CAL STATUS, to view menu
item 1, CALSTATE; menu item 2, TIMEREMAIN; and menu item 3,
PRESENT O2, as the calibration status updates.
10. When CALSTATE displays STOP GAS, return to the O2 CAL proce-
dure.
Failure to remove the Oxymitter 4000 from automatic control loops prior to performing this
procedure may result in a dangerous operating condition.