Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

ALARMS

LED

FLASHES

 

STATUS

 

1

 

OPEN

 

 

 

 

 

 

 

2

 

SHORTED

HEATER T/C

 

 

 

3

 

REVERSED

 

 

 

 

 

 

 

4

 

A/D COMM

 

 

ERROR

 

 

 

 

1

 

OPEN

 

2

 

HIGH HIGH

 

 

TEMP

 

 

 

HEATER

3

 

HIGH CASE

 

 

TEMP

 

 

 

4

 

LOW TEMP

 

5

 

 

 

 

HIGH TEMP

 

 

 

1

 

OPEN

 

3

 

 

O2 CELL

 

BAD

 

4

 

EPROM

 

 

 

 

 

CORRUPT

 

 

 

 

1

 

INVALID SLOPE

CALIBRATION

2

 

INVALID

 

 

CONSTANT

 

 

 

 

3

 

LAST CAL

 

 

FAILED

 

 

 

MANUALCALIBRATION

*PLACE CONTROL LOOP IN MANUAL

*IF CAL LED ON GO TO STEP 2

1

PUSH CAL

CAL LED ON

 

2

PUSH CAL

CAL LED FLASH

 

3APPLY TG1 PUSH CAL

4CAL LED ON SOLID WAIT FOR FLASH

5REMOVE TG1 & APPLY TG2

PUSH CAL

CAL LED ON SOLID

6WAIT FOR FLASH

2 FLASH-VALID CAL

3 FLASH-INVALID CAL

7REMOVE TG2

PUSH CAL

CAL LED ON FOR

8PURGE TIME CAL LED OFF

SW2 DIP SWITCH

HART LOCAL

0-10% 0-25%

4mA 20mA

NOT USED NOT USED

29770005

Figure 9-2. Inside Right Cover

CALIBRATION RECOMMENDED alarm signals an IMPS 4000 or SPS 4000 to initiate a calibration. The sequencer sends an “in cal” signal to the control room so that any automatic control loops can be placed in manual. Then, the sequencer begins to sequence the calibration gases.

3.Manual calibrations must be performed at the Oxymitter 4000 site and require operator intervention throughout the process. Manual calibration instruc- tions, in condensed form, are on the inside of the right electronics housing cover (Figure 9-2). For units with a membrane keypad, use the following to perform a manual calibration. For units with an LOI, refer to paragraph 9-3.

(a)Place control loop in manual.

(b)Verify the calibration gas parame- ters are correct (paragraph 9-2a).

(c)If performing a manual calibration with CALIBRATION RECOM- MENDED LED off and the CAL LED off, start at step 1.

(d)If performing a manual calibration with CALIBRATION RECOM- MENDED LED on and the CAL LED on, start at step 2.

1Push the CAL key. The CALI-

BRATION RECOMMENDED LED will come on and the CAL LED will be on solid. If a multimeter is attached across TP5 and TP6, the reading will display the percentage of oxygen seen by the cell.

2Push the CAL key. The CALI-

BRATION RECOMMENDED LED will turn off and the CAL LED will flash continu- ously. The Oxymitter 4000 can be configured so that the

Rosemount Analytical Inc. A Division of Emerson Process Management

Maintenance and Service 9-3