IB-106-340
5-17
Install all protective equipment covers and
safety ground leads after troubleshooting.
Failure to replace covers and ground leads
could result in serious injury or death.
5-5.
SPS 4000 TROUBLESHOOTING. Use the CAL
FAIL and IN CAL relay outputs to identify possible
SPS 4000 faults.
a.
If a calibration was not successfully completed,
the SPS 4000 sends a CAL FAIL contact
indication to the control room. To determine if
the SPS 4000 caused the failed calibration, go to
the Oxymitter 4000 site to view the keypad. Or,
access the HART/AMS menus. For more
information on HART/AMS, refer to Section
VII, HART/AMS.
1. If no alarms are indicated on the keypad or
in the HART/AMS STATUS sub-menu, the
calibration did not fail because of an
Oxymitter 4000 fault. Therefore, a
calibration gas flow problem occurred.
Refer to Table 5-2 or Figure 5-15 to
troubleshoot the SPS 4000.
2. If the LAST CAL FAILED alarm is
indicated on the keypad or in the
HART/AMS STATUS sub-menu, the failure
is due to either a bad Oxymitter 4000 cell or
a calibration gas flow problem.
(a)
Verify your calibration setup per
paragraph 6-2 in Section VI,
MAINTENANCE AND SERVICE,
Also, verify your calibration gas setup.
(b)
Perform another calibration and monitor
the process. If the calibration fails
before both calibration gases finish
sequencing, a gas flow problem exists.
Refer to Table 5-2 or Figure 5-15 to
troubleshoot the SPS 4000.
If the calibration setup is correct and the
Oxymitter 4000 indicates an invalid
slope fault (fault 12) before the gases
are purged and a last calibration failed
fault (fault 14) after the gases are
purged, replace the Oxymitter 4000 cell
per paragraph 6-8 in Section VI,
MAINTENANCE AND SERVICE.
b.
If a semi-automatic or manual calibration is being
performed but no 5 - 30 VDC relay output contact
(IN CAL or CAL FAIL) is being received by the
control room, the interface board relays are
malfunctioning. Replace the interface board per
paragraph 6-10b.
NOTE
If the unit is performing frequent auto-
calibrations, investigate at the Oxymitter
4000 site or using HART/AMS. This
condition may indicate an aging cell in the
Oxymitter 4000.
Summary of Contents for Oxymitter 4000
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