Emerson 3081FG - Manual (Page 44)

Instruction Manual
IB-106-3081 Rev. 1.5
September 2002
3-14 Startup and Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model 3081FG
a. IN MANUAL?
Refer to Figure 3-27.
Failure to remove the analyzer from
automatic control loops prior to per-
forming this procedure may result in a
dangerous operating condition.
If the O
2
output value is used in any auto-
matic process control loops, the loop must
be placed in manual before beginning a
calibration check.
Once the analyzer is removed from any
automatic control loops, press ENTER to
edit the screen. Use the arrow keys to se-
lect Y (yes) and press ENTER to process
the selection and to display the ACCEPT
HIGH O
2
screen.
%
O CONCENTRATION
2
Y/N (FOR USER
RESPONSE)
26020054
Figure 3-27. IN MANUAL?
%
%
O CONCENTRATION
2
HIGH CALIBRATION
CHECK GAS O VALUE
2
26020055
Figure 3-28. ACCEPT HIGH O
2
b. ACCEPT HIGH O
2
Refer to Figure 3-28. After pressing ENTER
to begin the calibration check, the high cali-
bration check gas starts to flow. After wait-
ing approximately three minutes for the
displayed O
2
value to settle, press NEXT to
accept the high calibration check gas read-
ing and apply the low calibration check gas.
The next screen to display is the ACCEPT
LOW O
2
screen.
c. ACCEPT LOW O
2
Refer to Figure 3-29. Once the low calibra-
tion check gas is applied, wait approxi-
mately three minutes for the displayed O
2
value to settle. Once the value settles, press
NEXT to accept the reading and to display
the SLOPE screen.