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Instruction Manual
IB-106-340 Rev. 2.4
April, 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 6-3
Oxymitter 4000
DIAGNOSTIC
ALARMS
TEST
POINTS
HEATERT/C
HEATER
O2 CELL
CALIBRATION
CALIBRATION RECOMMENDED
O2 CELL mV +
O2 CELL mv -
HEATERT/C +
HEATERT/C -
INC INC
DEC DEC
HIGH
GAS
LOW
GAS
CAL
TEST GAS +
PROCESS -
% O2
22220067
Figure 6-2. Membrane Keypad
(c) If using an IMPS 4000, enter a time
interval via the IMPS 4000 keypad
that will initiate an automatic cali-
bration at a scheduled time interval
(in hours). To set the CalIntvX pa-
rameter of the CHANGE PRESETS
display mode, refer to the IMPS
4000 Intelligent Multiprobe Test
Gas Sequencer Instruction Bulletin
for more information.
Once an automatic calibration is initi-
ated, by any of the methods previously
described, the Oxymitter 4000’s CALI-
BRATION 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.
2. Semi-Automatic Calibration. Semi-
automatic calibrations only require op-
erator initiation. However, the calibra-
tion gases must be permanently piped
to the Oxymitter 4000, an SPS 4000 or
IMPS 4000 must be installed to se-
quence the gases, and the Oxymitter
4000’s logic I/O must be set to mode 8
or 9 via HART/AMS so the sequencer
and Oxymitter 4000 can communicate.
Depending on your system setup, a
semi-automatic calibration can be initi-
ated by the following methods:
(a) Oxymitter 4000. Press the CAL
key on the Oxymitter 4000 keypad.
(b) IMPS 4000. Use the IMPS 4000
keypad to change the InitCalX pa-
rameter of the CHANGE PRE-
SETS display mode from 0000 to
0001. Refer to the IMPS 4000 In-
telligent Multiprobe Test Gas Se-
quencer Instruction Bulletin for
more information.
(c) HART. Use the HART Communi-
cator to access the O
2
CALIBRATE
menu and perform the O
2
CAL
method. Refer to paragraph 5-7 for
the complete calibration procedure.
(d) AMS. Refer to AMS documenta-
tion for more information.
(e) Remote Contact. Initiate a calibra-
tion from a remote location via the
remote contact input connection
provided by an IMPS 4000 or SPS
4000. Refer to the documentation
available for the control system in
use for more information.
Once a semi-automatic calibration is
initiated, by any of the methods previ-
ously described, the Oxymitter 4000’s
CALIBRATION RECOMMENDED
alarm signals an IMPS 4000 or SPS
4000 to initiate a calibration. The se-
quencer 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 se-
quence the calibration gases.
3. Manual Calibration. Manual calibra-
tions must be performed at the Oxy-
mitter 4000 site and require operator
intervention throughout the process.
Manual calibration instructions can also
be found, in condensed form, on the
inside of the right electronics housing
cover (Figure 6-3).
6