Level measurement

90 Continuous level measurement in liquids

4. Instrument selection within the measuring principle

Hydrostatics – process industry

Cerabar PMC51B

Cerabar PMP51B

Deltapilot FMB50

Technical data • Process pressure

100mbar to 40bar/ 0.15 to 600psi –40 to +100°C/ –40 to +212°F ±0.075% (0.055% optional) Thread, flange, hygienic connections 316L, Al 2 O 3 , sealings, PVDF — Ceramics

400mbar to 400bar/ 6 to 6,000psi –70 to +400°C/ –94 to +752°F ±0.075% (0.055% optional) Thread, flange, hygienic connections 316L, Alloy, Tantal, Monel, Gold — Metal welded

100mbar to 10bar/ 1.5 to 145psi –10 to +100°C/ +14 to +212°F ±0.2% (0.1% optional) Thread, flange, hygienic connections 316L, Alloy — Contite, condensate-proof, water-tight, metal welded TI00437P

• Process temperature

C

•Accuracy

• Process connection

• Wetted parts

• Gastight feedthrough • Measuring cell

• Technical Information Applications Horizontal storage tank cyl.

TI01506P

TI01508P

O + O + O – – – –

0 + O – O – – – –

O + O O O – – – –

Vertical storage tank

Buffer tank

Recipient tank Process tank

Stilling well

Bypass

Pump shaft

Channel measurement

• If pressurized, possibly use differential pressure measurement with two pressure transmitters (electronic dp). Observe ratio head pressure to hydrostatic pressure

• If pressurized, possibly use differential pressure measurement with two pressure transmitters. Observe ratio head pressure to hydrostatic pressure

Application limits

• If pressurized, possibly use differential pressure measurement with two pressure transmitters (electronic dp). Observe ratio head pressure to hydrostatic pressure

+ = recommended

O = restricted (observe limits)

– = not recommended