Honeywell ST 700 - Device Health; Process Variables; Shortcuts

Revision 4.0 ST 700 Series HART/DE Option User’s Manual Page 81
9.2.6 % Stress Life
% Stress Life
Parameter
Description
Percent of service life spent in stressful
conditions. Indicates the % of service life
where electronics temperature is within 10%
of respective range limits.% of Service life
spent either in 10% of lower limit range or
10% of upper limit range.
Set-up
None.
NVM
Backup once each 8 hour period
9.2.7 % 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
9.2.8 Operating Voltage Diagnostics
Table 23 – 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 hours.
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 required.