Rosemount Oxymitter 4000, Instruction Bulletin

Page: 89 / 127

IB-106-340
6-4
SW2 DIP SWITCH
HART LOCAL
0-10% 0-25%
4mA 20mA
NOT USED
NOT USED
LED
HEATER
O2 CELL
CALIBRATION
HEATER T/C
STATUS
OPEN
SHORTED
REVERSED
HIGH HIGH
TEMP
HIGH CASE
TEMP
LOW TEMP
HIGH TEMP
OPEN
BAD
EPROM
CORRUPT
INVALID SLOPE
INVALID
CONSTANT
FLASHES
1
2
3
1
2
OPEN
3
4
5
1
3
4
1
2
PUSH CAL
CAL LED ON
APPLY TG1
PUSH CAL
CAL LED ON SOLID
REMOVE TG1 & APPLY TG2
PUSH CAL
CAL LED ON SOLID
WAIT FOR FLASH
REMOVE TG2
PUSH CAL
1
2
3
4
5
6
7
ALARMS
MANUAL
CALIBRATION
CAL LED ON FOR
PURGE TIME
WAIT FOR FLASH
CAL LED OFF
PUSH CAL
CAL LED FLASH
2 FLASH VALID CAL
3 FLASH INVALID CAL
8
PLACE CONTROL LOOP
IN MANUAL
IF CAL LED ON
GO TO STEP 2
*
*
3
LAST CAL
FAILED
26170037
Figure 6-3. Inside Right Cover
Use the following procedure to perform a
manual calibration:
(a) Place control loop in manual.
(b) Verify the calibration gas parameters
are correct per paragraph 6-2a.
(c) If performing a manual calibration with
CALIBRATION RECOMMENDED
LED off and the CAL LED off, start at
step 1.
(d) If performing a manual calibration with
CALIBRATION RECOMMENDED
LED on and the CAL LED on, start at
step 2.
1 Push the CAL key. The CALI-
BRATION RECOMMENDED
LED will come on and the CAL
LED will be on solid. If a mul-
timeter is attached across TP5 and
TP6, the reading will display the
percentage of oxygen seen by the
cell.
2 Push the CAL key. The CALIBRA-
TION RECOMMENDED LED
will turn off and the CAL LED will
flash continuously. The Oxymitter
4000 can be configured so that the
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.
3 Apply the first calibration gas.
(Electronics will abort the calibra-
tion if step 4 is not done within 30
minutes).
4 Push the CAL key; the CAL LED
will be on solid. A timer is activa-
ted to allow the calibration gas ade-
quate time to flow (default time of
five minutes). When the timer
times out, the Oxymitter 4000 has
taken the readings using the first
calibration gas and the CAL LED
will flash continuously. The flash-
ing indicates the Oxymitter 4000 is
ready to take readings using the
second calibration gas.