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Instruction Manual
IB-106-340 Rev. 3.0
December 2003
7-6 HART/AMS Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 4000
7-7 HART COMMUNICATOR MANUAL
O
2
CAL METHOD
To perform a calibration using the HART Com-
municator, use the following procedure. If nec-
essary, 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 ar-
row key or use the number keypad to
select the menu item number. To re-
turn to a preceding menu, press the left
arrow key.
a. From the PERFORM O2 CAL screen, select
menu item 1, O2 CAL, to access the O2 cali-
bration procedure.
Failure to remove the Oxymitter 4000
from automatic control loops prior to
performing this procedure may result
in a dangerous operating condition.
b. In the first O2 CAL screen, a “Loop should be
removed from automatic control” warning ap-
pears. Remove the Oxymitter 4000 from any
automatic control loops to avoid a potentially
dangerous operating condition and press OK.
c. The next several screens indicate the calibra-
tion status. At each of the following status
prompts, select menu item 2, NEXT CAL
STEP:
COMPLETE
CAL RECOMMENDED
APPLY GAS 1
GAS 1 FLOW
d. At this point, select menu item 4, EXIT, to
leave the O2 CAL procedure.
e. From the PERFORM O2 CAL screen, view
menu item 3, CALSTATE, to monitor the
calibration status as it updates. Or, access
the O2 CALIBRATE 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.
f. When CALSTATE displays APPLY GAS 2,
return to the O2 CAL procedure.
g. When the “Loop should be removed from
automatic control” warning appears, press
OK.
h. At the APPLY GAS 2 status prompt, select
menu item 2, NEXT CAL STEP. When the
status displays GAS 2 FLOW, select menu
item 4, EXIT, to leave the O2 CAL procedure.
i. From the PERFORM O2 CAL screen, view
menu item 3, CALSTATE, to monitor the cali-
bration status as it updates. Or, access the
O2 CALIBRATE 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 cali-
bration status updates.
j. When CALSTATE displays STOP GAS, re-
turn to the O2 CAL procedure.
k. When the “Loop should be returned to auto-
matic control” message appears, return the
Oxymitter 4000 to the automatic control loops
previously removed and press OK.
l. 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.
m. From the PERFORM O2 CAL screen, view
menu item 3, CALSTATE, to monitor the cali-
bration status as it updates. Or, access the
O2 CALIBRATE 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 cali-
bration status updates.
n. When CALSTATE displays COMPLETE, the
calibration is finished.