Horizontal Vessel With Volume Measurement - Siemens SITRANS LR250 Operating Instructions Manual

Commissioning
6.3 Application examples
6.3.2

Horizontal vessel with volume measurement

Note
The minimum distance from the flange face to the target is limited by Near Range (2.5.1.).
To obtain level measurement proportional to vessel volume in a chemical vessel:
● Low Calibration Point = 3.5 m (11.48 ft) from sensor reference point
● High Calibration Point = 0.5 m (1.64 ft) from sensor reference point
● Max. fill/empty rate = 0.2 m/min (0.65 ft/min)
● Select vessel shape, Parabolic Ends, and enter values for A and L, to obtain a volume
reading instead of level.
In the event of a loss of echo:
● SITRANS LR250 is to report a status of BAD or UNCERTAIN after 120 seconds (2 minutes).
①
②
③
④
⑤
74
Sensor reference point
0.5 m
High calibration point
3.5. m
Low calibration point
⑥
A = 0.8 m
⑦
L = 6 m
⑧
100% = 8000 L
⑨
Volume reading
SITRANS LR250 (FOUNDATION FIELDBUS)
Operating Instructions, 08/2014, A5E32221411-AC