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Rosemount 5900S LPG/LNG Antenna
The Rosemount 5900S with LPG/LNG antenna is a premium non-contact radar level gauge for
measurement on pressurized or cryogenic liquefied gas. Radar signals are transmitted inside the still-pipe
which enables the gauge to have a sufficiently strong echo even under turbulent conditions, such as a
boiling surface.
■ Custody transfer accuracy according to OIML R85:2008
■ Certified SIL 2 and SIL 3 capable according to IEC 61508
■ 2-in-1 functionality available for redundant level measurement
■ Reference device function enables measurement verification with the tank in service
■ Communicates via a 2-wire, low voltage Tankbus for easy and safe installation
■ Built-in pressure sensor for vapor compensation gives best measurement performance
■ Integrated ball valve
Operating temperature at ball valve
-55 to 90 °C (-67 to 194 °F)
Operating temperature in tank
-170 to 90 °C (-274 to 194 °F)
Measuring range
1.2 to 30 m (3.9 to 100 ft) below flange.
Possibility to measure 0.8 to 60 m (2.6 to 200 ft). Accuracy may be reduced. For longer measuring range, consult your local
representative.
Pressure range
-1 to 25 bar (-14.5 to 365 psig).
Note! Flanges may have higher pressure rating than 25 bar, but maximum tank pressure is still 25 bar.
Pressure sensor (option)
Rosemount 2051. It is available with various hazardous location certifications, see Product Certifications.
For more information see the Rosemount 2051 Product Data Sheet.
Material exposed to tank atmosphere
Antenna and flange: Material corresponds to AISI 316/316L and EN 1.4401 /1.4404
Sealing: PTFE
Still-pipe dimension compatibility
Antenna choices for 4-in. sch. 10, 4-in. sch 40, or 100 mm (99 mm inner diameter) still-pipe dimensions
Flange size and rating
4 in. Class 150/300
6 in. Class 150/300
8 in. Class 150/300
Pressure seal
The pressure seal includes a double-block function, consisting of a PTFE seal and a fire-proof ball valve. A pressure sensor enables
correction due to vapor for best measurement performance.
Verification possibility
A patented reference device function enables measurement verification with the tank in service. A verification pin mounted in a
still-pipe hole, and a deflection plate with a verification ring at the lower still-pipe end provide reference echoes at fixed pre-defined
distances.
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