Honeywell ST 700 - Calibration Records

Page 158 ST 700 Series HART/DE Option User’s Manual Revision 4.0
18.2.6 % 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
18.2.7 % 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
18.2.8 Operating Voltage Diagnostics
Table 46 – 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.