Revision 5.0 ST 800 Series HART/DE Option User’s Manual Page 79
SV Tracking
Table 17 – Maximum SV Tracking
Max SV Limit Parameter Description
Meterbody Temperature (SV) upper
operating limit from specification.
Value
Highest Meterbody Temperature ever
experienced by the device.
None - value initialized to Min SV Limit
value prior to leaving the factory.
Updates to current Meterbody
Temperature automatically when
powered at user site after one minute.
Update after every 8 hours.
Upper Stress
Limit
Accumulation of minutes that device’s
Meterbody Temperature has been
above the value of “SV Upper Stress
Backup once each 8 hour period
Last SV Up
Time that has passed since the last
time device’s Meterbody Temperature
has passed above the value of “SV
Upper Stress Limit” (in days, hours and
Backup once each 8 hour period
Table 18 – Minimum SV Tracking
Meterbody Temperature (SV) lower
operating limit from specification.
Value
Lowest Meterbody Temperature ever
experienced by the device.
None - value initialized to Max SV Limit
value prior to leaving the factory.
Updates to current Meterbody
Temperature automatically when
powered at user site after one minute.
Update after every 8 hours.
Lower Stress
Limit
Accumulation of minutes that device’s
Meterbody Temperature has been
below the value of “SV Lower Stress
Backup once each 8 hour period
Time Since
Last SV
Down
Method Description
Time that has passed since the last time
device’s Meterbody Temperature has
passed below the value of “SV Lower
Stress Limit” (in days, hours, and
Backup once each 8 hour period
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