Emerson Process Management IM-106-340 CALIBRATION/Start Calibration, Apply Gas Hit E when ready

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

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 O2.

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 6-4for 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

9-5