Honeywell ST 700 - Services

Revision 4.0 ST 700 Series HART/DE Option User’s Manual Page 91
Diagnostics Type
Diagnostics
Details/Resolution
Resolution:
Reset the device. If the problem persists,
replace the Meter Body.
Non-Critical
(continued)
No DAC Compensation
Possible causes:
No temperature compensation data exists for
analog output calculations. Loop accuracy may
be slightly compromised. Effect will be minor
degradation of ambient temperature influence
specifications.
Resolution:
Replace Electronics Module (PWA) to achieve
the maximum current loop accuracy or return
the device to factory for DAC compensation.
Reset Corrects Flag
Successful “Reset Corrects” operation will set
this flag and display message as “Calibration
Correction values are reset to factory default”.
When ‘LRV Correct’ and ‘URV Correct’
operations are performed, the flag will be reset.
Sensor Fault
Possible causes:
 There is a failure on the Sensor Board
 Redundant Characterization Calculation
Error
 Calculated pressure is above Upper
Transducer Limit (UTL).
Resolution:
Check range and, if required, replace
transmitter with one that has a wider range.
Meter Body may have been damaged. Check
the transmitter for accuracy and linearity.
Replace Meter Body and recalibrate if needed.
Sensor overload
Possible causes:
The calculated pressure is above the Upper
Transducer Limit (UTL).
Resolution:
Check range and, if required, replace
transmitter with one that has a wider range.
Meter Body may have been damaged. Check
the transmitter for accuracy and linearity.
Replace Meter Body and recalibrate if needed.
Current Fixed
Possible causes:
Output current is fixed and not varying with
applied input. Output Mode is active.
Resolution:
Exit Output mode if active.