Level measurement

32 Continuous level measurement in liquids

3. Selection of the measuring principle according to the application

Contact

B

Guided radar Levelflex

Multiparameter Levelflex

FMP51/52/54

FMP55

Advantages

• Simultaneous acquisition of interface layer and total level • Not affected by the density of the medium • No wet calibration required • Direct replacement of displacers in existing displacer chambers • Probes can be shortened (rod) ±10mm/±0.39" (interface level) –196 to +450°C/–321 to +842°F –1 to +400bar/–14.5 to +5,800psi Threads, flanges (DIN, ANSI, JIS), hygiene connections 6m/20ft (coax), 10m/33ft (rope/rod), longer upon request • Dielectric constant (DC value) of the upper medium must be determined • DC value changes of the upper medium influence accuracy • DC value of the upper medium may be max. 10 • Difference of the DCs between the two media must be >10 • For interface measurement, the thickness of the upper phase must be min. 60mm/2.36" • Emulsion layers up to max. 50mm/1.97" allowable 2-wire (HART®/PA), 4-wire ±2mm/±0.08" (overall level);

• Simultaneous acquisition of interface layer and overall level, also in case of emulsions • Precise and reliable measurement • Independent of medium density • Wet calibration not required • PTFE-coated probe 2-wire (HART®/PA), 4-wire ±2mm/±0.08" (overall level); ±10mm/±0.39" (interface level) –50 to +200°C/–58 to +392°F –1 to +40bar/–14.5 to +580psi Threads, flanges (DIN, ANSI, JIS), hygiene connections 6m/20ft (coax), 10m/33ft (rope), 4m/13ft (rod), longer upon request • Dielectric constant (DC value) of the upper medium must be determined • DC value changes of the upper medium affect the accuracy • DC value of the upper medium may be max. 10 • DC value difference between both media must be >10 • For interface layer measurement, the thickness of the upper phase must be minimum 60mm/2.36"

Technical data • Connection •Accuracy

• Process temperature • Process pressure • Process connection

•Maximum

measuring range

Application limits

Please note: Guided radar continued on Page 68