Emerson Process Management OXYMITTER 4000 - Manual (Page 94)

Instruction Manual
IB-106-340C Rev. 4.1
July 2004
7-8 HART/AMS Rosemount Analytical Inc. A Division of Emerson Process Management
Hazardous Area Oxymitter 4000
7-7 HART COMMUNICATOR O
2
CAL METHOD
Use the following procedure to perform a
calibration using the HART Communicator. 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.
a. From the PERFORM O
2
CAL screen,
select menu item 1, O
2
CAL, to access
the O
2
calibration procedure.
Failure to remove the Hazardous Area
Oxymitter 4000 from automatic control
loops prior to performing this proce-
dure may result in a dangerous oper-
ating condition.
b. In the first O
2
CAL screen, a “Loop should
be removed from automatic control” warning
appears. Remove the Hazardous Area
Oxymitter 4000 from any automatic control
loops to avoid a potentially dangerous op-
erating condition and press OK.
c. The next several screens indicate the cali-
bration 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 O
2
CAL procedure.
e. From the PERFORM O
2
CAL screen, view
menu item 3, CALSTATE, to monitor the
calibration status as it updates. Or, access
the O
2
CALIBRATE screen and select menu
item 2, O
2
CAL STATUS, to view menu item
1, CAL-STATE; menu item 2, TIMERE-
MAIN; and menu item 3, PRESENT O
2
, as
the calibration status updates.
f. When CALSTATE displays APPLY GAS 2,
return to the O
2
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 O
2
CAL
procedure.
i. From the PERFORM O
2
CAL screen, view
menu item 3, CALSTATE, to monitor the
calibration status as it updates. Or, access
the O
2
CALIBRATE screen and select menu
item 2, O
2
CAL STATUS, to view menu item
1, CAL-STATE; menu item 2, TIMERE-
MAIN; and menu item 3, PRESENT O
2
, as
the calibration status updates.
j. When CALSTATE displays STOP GAS,
return to the O
2
CAL procedure.
k. When the “Loop should be returned to
automatic control” message appears, return
the Hazardous Area 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 O
2
CAL proce-
dure.
m. From the PERFORM O
2
CAL screen, view
menu item 3, CALSTATE, to monitor the
calibration status as it updates. Or, access
the O
2
CALIBRATE screen and select menu
item 2, O
2
CAL STATUS, to view menu item
1, CAL-STATE; menu item 2, TIMERE-
MAIN; and menu item 3, PRESENT O
2
, as
the calibration status updates.
n. When CALSTATE displays COMPLETE,
the calibration is finished.