Instruction Manual

IB-106-340 Rev. 3.0 December 2003

Oxymitter 4000

4-20 mA signal will hold the last value. The default condition is for the output to track. the flashing LED indicates that the Oxymitter 4000 is ready to accept the first calibration gas.

3Apply the first calibration gas. (Electronics will abort the cali- bration if step 4 is not done within 30 minutes).

4Push the CAL key; the CAL LED will be on solid. A timer is activated to allow the calibra- tion gas adequate time to flow (default time of five minutes). When the timer times out, the Oxymitter 4000 has taken the readings using the first cali- bration gas and the CAL LED will flash continuously. The flashing indicates the Oxy- mitter 4000 is ready to take readings using the second calibration gas.

5Remove the first calibration gas and apply the second calibration gas. (Electronics will abort the calibration if step 6 is not done within 30 minutes).

6Push the CAL key; the CAL LED will be on solid. The timer is activated for the sec- ond 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.

The CAL LED flashing indicates the calibration is done. (See Section 8, TROUBLE- SHOOTING, for an explanation of the 2 pattern and 3 pattern flashes).

7Remove the second calibra- tion gas and cap off the cali- bration gas port.

8Push 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 un- locks 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 the new calibration values, slope or constant, is not within the pa- rameters, the DIAGNOSTIC ALARMS LED will indicate an alarm. (See Section 8, TROUBLE- SHOOTING, 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.

(e) Place control loop in automatic.

9-4 Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management