Honeywell ST 700 - Services

Page 164 ST 700 Series HART/DE Option User’s Manual Revision 4.0
Non critical status
(Warning)
(continued)
Non critical status
(Warning)
(continued)
No DAC Compensation
Possible causes:
No temperature compensation data exists for
analog output calculations.
Loop accuracy may be slightly compromised.
The effect will be a 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.
No Factory Calibration
Possible causes:
Factory Calibration is missing. Accuracy will
be compromised.
Resolution:
Replace the Meter Body or return the device
for Factory Calibration.
PV Out of Range
Possible causes:
 Sensor Overload/Sensor Fault
 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.
Fixed Current Mode
Possible causes:
Output current is fixed and not varying with
applied input. Loop current mode is disabled
or Loop Test is active.
Resolution:
Enable Loop Current Mode if it is disabled or
exit the Loop Test mode if active.
Sensor Over
Temperature
Possible causes:
Meter Body temperature is too high.
Accuracy and life span may decrease if it
remains high.
Resolution:
Verify the environment temperature is within
specification. Take steps to insulate Meter
Body from temperature source.
Meter Body Excess
Correct
Possible Causes:
ZERO or SPAN correction factor is outside
acceptable limits. INPUT may have been
incorrect during calibration or transmitter was