A.2.3 Clef Range - Siemens SITRANS LR250 Operating Instructions Manual
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Example: CLEF enabled
Vessel height: 1.5 m; CLEF range set to 0.5 m
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A.2.3
CLEF Range
Determines the level below which the CLEF algorithm will be used. Above this level the Center
algorithm is used when Hybrid is selected in Position Detect (2.5.7.2.). CLEF Range is
referenced from Low Calibration Point (process empty level).
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SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
default TVT
material echo selected
vessel bottom echo
echo marker
CLEF range
(Center algorithm applied)
High calibration point
Appendix A: Technical reference
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Low calibration point
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Sensor reference point
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Low Calibration Point (process empty
level)
A.2 Echo processing
235
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