User's Manual

A5E32337683 SITRANS LR260 (HART) – OPERATING INSTRUCTIONS Page 71
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Parameters
3.16. Remaining Sensor Lifetime (REMAIN SENS. LIFE.)
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 alerts, 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.
3.16.1. Total Sensor Operating Time (SENS OP. TIME)
Displays the amount of time the sensor has been operating in selected units.
Can be reset to zero after performing a service or replacing the sensor.
To reset to zero:
• In SIMATIC PDM, open the menu Device – Maintenance, click on the
Remaining Sensor Lifetime tab, and click on Sensor Replaced to restart
the timer and clear any fault messages.
• Via the handheld programmer, manually reset Total Sensor Operating Time
to zero.
Notes:
• 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, Service Interval,
and Calibration Interval.
• The device operates in years. To view Remaining Sensor Lifetime parameters in
hours or days (via SIMATIC PDM only) see Total Expected Sensor Life.
1)
In device, Maintenance parameters are displayed in years. In SIMATIC PDM, mainte-
nance parameter units are user selectable.