Emerson Oxymitter 5000 Instruction Manual page 123

Instruction Manual
IM-106-350, Rev 2.2
July 2008
FOUNDATION FIELDBUS
O CAL METHOD
2
f. Push the CAL key; the CAL LED will be on solid. The timer is
activated for the second calibration gas flow. When the timer times
out, the CAL LED will flash a 2 pattern flash or a 3 pattern flash (2
pattern flash equals a valid calibration, 3 pattern flash equals an
invalid calibration). If the slope or the constant is out of specification,
a diagnostic alarm LED will be flashing. The diagnostic alarm will
remain active until the purge cycle is over. If the three pattern flash
occurs without a diagnostic alarm, the calibration gases could be the
same or the calibration gas was not turned on.
A flashing CAL LED indicates the calibration is done. (See Section 8:
Troubleshooting, for an explanation of the 2 pattern and 3 pattern
flashes).
g. Remove the second calibration gas and cap off the calibration gas
port.
h. Push the CAL key; the CAL LED will be on solid as the unit purges.
(Default purge time is three minutes). When the purge is complete,
the CAL LED will turn off and the Oxymitter 5000 output unlocks from
its held value and begins to read the process O
If the calibration was valid, the DIAGNOSTIC ALARMS LEDs will
indicate normal operation. If either new calibration value (slope or
constant) is not within parameters, the DIAGNOSTIC ALARMS LED
will indicate an alarm. (See Section 8: Troubleshooting, for alarm
codes). If the calibration was invalid, the Oxymitter 5000 will return to
normal operation, as it was before a calibration was initiated, and the
parameters will not be updated.
5. Place control loop in automatic.
To perform a calibration using the FOUNDATION fieldbus, use the following
procedure.
1. From the computer running the fieldbus control program, run the O
Method.
Failure to remove the Oxymitter 5000 from automatic control loops prior to performing this
procedure may result in dangerous operating conditions.
2. In the first O CAL screen, a "Loop should be removed from automatic
2
control" warning appears. Remove the Oxymitter 5000 from any
automatic control loops to avoid a potentially dangerous operating
condition and press OK.
3. From this point, following the on-screen prompts to complete the
calibration procedure. When a step is complete, select Proceed to Next
Step and press the Next button.
4. During the wait periods, such as during a purge, the Time Remaining
display may be updated by selecting Update and pressing Next button.
Oxymitter 5000
.
2
Cal
2
9-5