Emerson Rosemount 5081FG, Reference Manual

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Reference Manual
00809-0100-4882, Rev AB
May 2019
Rosemount 5081FG
4-8
FIELD COMMUNICATOR
START CAL CHECK
METHOD
To perform a calibration check on the Two-Wire In-Situ Oxygen Analyzer with
the field communicator, use the following procedure. If necessary, use the
menu tree in Figure 4-3 (sheet 1 of 3) for reference.
NOTE
To select a menu item use either the up and down arrow keys to scroll to the
menu item. 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.
NOTE
Pressing ABORT at any time during this process will purge the calibration
check gases and end the calibration check procedure.
1. From the DEVICE SETUP SCREEN, select DIAG/SERVICE.
2. From the DIAG/SERVICE screen, select O
2
CALCHECK.
3. Before starting the calibration check procedure, first set up the high
calibration check gas, low calibration check gas, and tracking using
HART/AMS.
4. From the O2 CALCHECK screen, select menu item 1, START
CALCHECK, to access the calibration check procedure.
5. In the first screen, a “Loop should be removed from automatic control"
warning appears. Remove the analyzer from any automatic control
loops to avoid undesirable equipment performance and press OK.
6. The next screen prompts you to apply the high calibration check gas.
This message will only display for approximately three seconds. Press
OK.
7. At this point, calibration check gas will flow for approximately three min-
utes until the gas reading is taken. Once the gas is measured, the mes-
sage, "Hi gas reading taken," displays for three seconds.
8. Next, the screen prompts you to apply the low calibration check gas.
Press OK.
9. The low calibration check gas will flow for approximately three minutes
until the reading is taken. Once the gas is measured, the message,
"Low gas reading taken,” displays for three seconds.
10. Next, the screen prompts you to disconnect the calibration check gases.
Press OK. Once the gases are disconnected the system will purge the
gases for approximately three minutes.
11. When the “Loop may be returned to automatic control” note appears,
return the analyzer to the automatic control loops previously removed
and press OK.
Failure to remove the analyzer from automatic control loops prior to performing this
procedure may result in a dangerous operating condition.