Operating Instructions

Calibration Interval (4.5.1.)
Note
The device always operates in years. Changing the units affects only the parameter view of
Remaining Sensor Life parameters in SIMATIC PDM.
User-configurable recommended time between product calibrations.
Values Units
a)
: hours, days, years
Range: 0 to 20 years
Default: 1.0 year
a)
Units are selectable only via SIMATIC PDM.
Time Since Last Calibration (4.5.2.)
Time elapsed since last calibration. Can be reset to zero after performing a calibration.
To reset to zero:
● In SIMATIC PDM, open the menu Device – Maintenance, click on the Calibration Schedule
tab, and click on Calibration Performed to restart the timer and clear any fault messages.
● Via the handheld programmer, manually reset Time Since Last Calibration (4.5.2.) to zero.
Time Until Next Calibration (4.5.3.)
Read only. Calibration Interval (4.5.1.) less Time Since Last Calibration (4.5.2.).
Parameter reference
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 143