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Rosemount™ 5900S Radar Level Gauge
The Rosemount 5900S Radar Level Gauge delivers ±0.
5 mm (0.020 in.) instrument accuracy, reducing level measurement uncertainty to a minimum. It enhances your storage operation by providing certified custody transfer accuracy, better inventory management and reliable loss control data.
The Rosemount 5900S is normally combined with high precision multi-spot temperature sensors for highest accuracy API standard net volume calculations.
The Rosemount 5900S takes overfill safety to a higher level with an innovative 2-in-1 feature which includes two radar gauges in one housing for independent level and overfill measurement. It is SIL 2 and SIL 3 certified according to IEC 61508 and enables API 2350 compliant solutions.

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Rosemount™ 5900S Radar Level Gauge


± 0.5 mm (± 0.020 in.).
Typically < ± 0.5 mm (0.020 in.) in -40 to +70 °C (-40 to +158 °F).
Update Rate
New measurement every 0.3 second.
Communication Protocol
Foundation™ Fieldbus for connection to Rosemount 2410 with self-configuring Tankbus or any Foundation™ Fieldbus host system.
A Rosemount 5900 level gauge in combination with a 2410 Tank Hub enables wireless communication and emulation of gauges from other manufacturers.
Custody Transfer Approval
OIML R85:2008, and national certifications such as PTB, NMi etc.
• SIL 2 and SIL 3 certified.
• TÜV tested and WHG approved for overfill prevention.
Metrology Sealing
Emulation Capability
Possible to integrate with legacy tank gauging systems.
Supports emulation of other vendors’ communication protocols: E.g. Enraf, L&J Tankway, Varec Mark/Space, Whessoe, GPE, Sakura and Tokyo Keiso.
Power Supply
• FISCO: 9.0 - 17.5 VDC polarity insensitive (for example from 2410 Tank Hub).
• Entity: 9.0 - 30.0 VDC polarity insensitive.
Ambient Temperature
-40 to +70 °C (-40 to +158 °F). Minimum start-up temperature is -50 °C (-58 °F).
Antenna Type
Parabolic antenna, still-pipe array antenna, horn antenna, LPG/LNG antenna.


  • Get highest certified custody transfer accuracy for precise asset management of bulk liquid storage.
  • Achieve higher safety with third party certified IEC 61508 SIL 2 or SIL 3 capability.
  • Use one tank opening to install the 2-in-1 gauge for either redundant level measurements or to achieve independent safety and level measurement systems.
  • Benefit from convenient and safe installation with two-wire IS bus power supply.
  • Include wired and/or wireless data transmission.
  • Measure in all bulk storage tank types and products, ranging from liquefied gases, light products, crude oil and bitumen.