Operating Instructions

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.).
Activation of Reminders (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 Reminder 1 (Maintenance Required)
Reminder 2 (Maintenance Demanded)
Reminders 1 and 2
* OFF
1. First set the values in Reminder 1 before Lifetime (Required) (4.3.5.)/Reminder 2 before
Lifetime (Demanded) (4.3.6.).
2. Select the desired Activation of Reminders option.
Reminder 1 before Lifetime (Required) (4.3.5.)
If Remaining Lifetime (4.3.3.) is equal to or less than this value, the device generates
a Maintenance Required reminder.
Values Range: 0 to Lifetime (Expected) (4.3.1.)
Default: 0.164 years
1. Modify values as required.
2. Set Activation of Reminders (4.3.4.) to the desired option.
Reminder 2 before Lifetime (Demanded) (4.3.6.)
If Remaining Lifetime (4.3.3.) is equal to or less than this value, the device generates
a Maintenance Demanded reminder.
Values Range: 0 to Lifetime (Expected) (4.3.1.)
Default: 0.019 years
Parameter reference
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 137