Siemens Sitrans LR250 - Level Application Example

7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL Page 33
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Quick Start: local
Level application example
The application is a vessel that takes an average 3 hours to fill and 3 weeks to empty.
Fill rate = 0.08 m/minute (Low Cal Pt. minus High Cal Pt.) / fastest fill/empty time
= (15.5 m – 1 m) / 180 min.
= 14.5 m /180 min. = 0.08 m/min
Quick Start Setting Description
MATERIAL LIQUID
RESPONSE RATE SLOW Response rate = 0.1 m/minute.
UNITS m
OPERATION LEVEL Material level referenced from Low Calibration Point.
LOW CALIBRATION POINT 15.5 Process empty level.
HIGH CALIBRATION POINT 1.0 Process full level.
APPLY? (CHANGES) YES Save new settings.
sensor
reference
point
Level
Low Cal.
Point
High Cal.
Point
15.5 m
1.0 m
SITRANS LR250