Honeywell ST 800 Series, Руководство пользователя

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Page 82 ST 800 Series HART/DE Option User’s Manual Revision 5.0
% Stress Life
% Stress Life Parameter Description Percent of service life spent in stressful
conditions. Indicates the % of service life
where one or more of PV, static pressure,
meter body temperature or electronics
temperature are within 10% of respective
range limits.
Set-up None.
NVM Backup once each 8 hour period
% Service Life
% Service Life Parameter Description Percent of expected Service Life that device
has been in service. Value is based on
electronics temperature. Service life
accumulates faster at higher temperatures
with an exponential relationship.
Set-up None.
NVM Backup once each 8 hour period
Operating Voltage Diagnostics
Table 22 – Operating Voltage Diagnostics
Current Op
Voltage Parameter Description Operating voltage available at device
terminals.
Set-up None – units always in volts.
NVM none
Note
No accuracy is specified for this
measurement!
This value is intended to be used for
informational purposes only and should
not be used for control.
Min Op Voltage Parameter Description Minimum operating voltage experienced by
device at terminals since last reset of
operating voltage parameters.
Set-up User can reset as desired using method
described in item below.
NVM Backup once each 8 hour period
Time Since Last
Voltage Low
Method Description Displays time since last minimum
operating voltage event in minutes.
Set-up User can reset as desired using method
described in item below.
NVM Update every 8 hour.
Reset Operating
Voltage
Parameters Method Description Causes “Min Op Voltage” to be set to 32
volts and “Time Since Last Event” to be
reset to zero. Within a short period of time
“Min Op Voltage” will assume operating
voltage value.
Set-up User actuates as desired.