Siemens SITRANS LR250 Operating Instructions Manual page 150

Parameter reference
Lifetime Expected (4.3.1.)
Note
The device always operates in years. Changing the units affects only the parameter view of
Remaining Sensor Life parameters in SIMATIC PDM.
Allows you to override the factory default.
Values
Units are selectable only via SIMATIC PDM.
a)
Time in Operation (4.3.2.)
The amount of time the sensor has been operating. 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 Time in Operation (4.3.2.) to zero.
Remaining Lifetime (4.3.3.)
Read only. Lifetime Expected (4.3.1.) less Time in Operation (4.3.2.).
Reminder Activation (4.3.4.)
Note
To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu
Device – Maintenance.
Allows you to enable a maintenance reminder.
Options
1. First set the values in Reminder 1 (Required) (4.3.5.)/Reminder 2 (Demanded) (4.3.6.).
2. Select the desired Reminder Activation option.
148
Units : hours, days, years
a)
Range: 0 to 20 years
Default: 10.00 years
Reminder 1 (Maintenance Required)
Reminder 2 (Maintenance Demanded)
Reminders 1 and 2
* OFF
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC