Siemens SITRANS LR250 Operating Instructions Manual page 147

Lifetime Expected (4.2.1.)
Note
Note: The device always operates in years. Changing the units affects only the parameter
view of the Remaining Device Lifetime parameters in SIMATIC PDM.
Allows you to override the factory default.
Values
Units are selectable only via SIMATIC PDM.
a)
Time in Operation (4.2.2.)
Read only. The amount of time the device has been operating.
Remaining Lifetime (4.2.3.)
Read only. Lifetime Expected (4.2.1.) less Time in Operation (4.2.2.).
Reminder Activation (4.2.4.)
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.
Values
1. First set the values in Reminder 1 (Required) (4.2.5.)/Reminder 2 (Demanded) (4.2.6.).
2. Select the desired Reminder Activation option.
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
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
Parameter reference
145