Emerson Process Management OXYMITTER 4000 IM-106-340 - Manual (Page 121)

Instruction Manual
IM-106-340, Rev. 4.0
May 2006
9-5
Oxymitter 4000
e. Remove the first calibration gas and apply the second calibration
gas. (Electronics will abort the calibration if step f is not done within
30 minutes).
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 4000 output unlocks from
its held value and begins to read the process O
2
.
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 4000 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.
CALIBRATION WITH LOI Refer to Figure 6-4 for a view of the LOI menu tree. To calibrate the Oxymitter
4000 from the LOI, access the CALIBRATION/ Start Calibration menu.
CALIBRATION/Start Calibration
This is the starting point for calibrations. The LOI will instruct the user through
this entire procedure. Select "Abort Calib" at any time to abort the calibration.
1. The LOI displays the following:
Apply Gas 1
Hit E when ready
The Oxymitter 4000 is ready to accept the first calibration gas. Apply the
first calibration gas. (Electronics will abort the calibration if this step is
not done within 30 minutes).
2. Touch the Enter key to start the Gas 1 flow. A timer is activated to allow
the calibration gas adequate time to flow (default time of five minutes).
The LOI displays:
Flow Gas 1 xxxxs
Read Gas 1 xxxxs
Done Gas 1