Parameter reference
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
147
Remaining Sensor Lifetime (4.3.)
Note
•
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
•
Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up
Maintenance/Service schedules, based on operating hours instead of a calendar-based
schedule. See also Remaining Device Lifetime (4.2.), Service Schedule (4.4.), and
Calibration Schedule (4.5.).
•
Performing a reset to Factory Defaults will reset all the Maintenance Schedule
parameters to their factory defaults.
•
The device operates in years. To view Remaining Sensor Lifetime parameters in hours or
days (via SIMATIC PDM only) see Lifetime Expected (4.3.1.).
The device monitors the predicted lifetime of the sensor (the components exposed to the vessel
environment). You can modify the expected sensor lifetime, set up schedules for maintenance
reminders, and acknowledge them.
To access these parameters via SIMATIC PDM:
●
Open the menu Device – Maintenance and select the Remaining Sensor Lifetime tab.
●
After modifying values/units as required, click on Write to accept the change, and Read to
view the effect of the change.
●
Click on Snooze to add a year to the Total Expected Sensor Life.
●
Click on Sensor Replaced to restart the timer and clear any fault messages.
Time Units
Options
a)
Hours; days; years
Default: years
a)
Selectable only via SIMATIC PDM.