Level measurement

76 Continuous level measurement in liquids

4. Instrument selection within the measuring principle

Ultrasonics – process industry

Prosonic FMU30

Prosonic FMU40/41

Prosonic FMU42, FMU44

Technical data • Process pressure

+0.7 to +3bar/ +10 to +44psi

+0.7 to +3bar/ +10 to +44psi –40 to +80°C/–40 to +176°F ±2mm/±0.08" or 0.2% of distance

+0.7 to +2.5bar/ +10 to +36psi –40 to +80°C/–40 to +176°F ±4mm/±0.16" or 0.2% of distance 80 (100)/100 (150/200) PVDF/EPDM/Viton 0.4 to 10m/1.3 to 32ft (FMU42) 0.5 to 20m/1.6 to 65ft (FMU44) — TI01458F/TI01460F

• Process temperature •Accuracy

–20 to +60°C/–4 to +140°F ±3mm/±0.12" or 0.2% of distance

• Process connection

• Wetted parts • Measuring ranges

PP/EPDM 0.25 to 5m/0.8 to 16ft 0.35 to 8m/1.1 to 26ft (2") — TI00440F

PVDF/EPDM 0.25 to 5m/0.8 to 16ft (FMU40) 0.35 to 8m/1.1 to 26ft (FMU41) — TI01456F/TI01457F

• Point level detection • Technical Information

C

Applications

2"

FMU40

FMU41

FMU42

FMU44

Horizontal storage tank cyl

+

O

+

O

O

–

Vertical storage tank

+

+

+

+

+

+

Buffer tank

–

–

+

O

–

–

Recipient tank

–

–

–

–

–

–

Process tank

O

O

+

+

+

+

Stilling well

O

O

+

+

+

+

Bypass

–

–

–

–

–

–

Pump shaft

O

O

O

O

O

O

Channel measurement

O

O

O

O

O

O

Application limits

•For higher resistance •Foam/ strong turbulence possible •Fast filling and discharging rate • Point level detection

FMU42, FDU9x FMU30 (2"), FMU42, FDU91 FMU90 + FDU9x

•For higher resistance •Foam/ strong turbulence possible •Fast filling and discharging rate • Point level detection

FMU42, FDU9x FMU41, FMU42/ FDU91 FMU90 + FDU9x

•Foam/ strong

FMU44/ FDU92

turbulence possible

•Fast

FMU90 + FDU9x

filling and discharging rate • Point level detection

FMU90 + FDU9x

FMU90 + FDU9x

FMU90 + FDU9x

+ = recommended

O = restricted (observe limits)

– = not recommended