The Rosemount 5900C Radar Level Gauge provides ± 3 mm (0.12 in.) instrument accuracy. It is normally combined with high precision multiple spot temperature sensors for net volume calculations. It is SIL 2 certified according to IEC 61508

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| Measurement principle | FMCW (Frequency Modulated Continuous Wave) |
| Instrument accuracy | ± 3 mm (0.12 in.) |
| Fieldbus (standard) | FOUNDATION Fieldbus FISCO (Tankbus) |
| Repeatability | 0.2 mm (0.008 in.) |
| Output variables and units | Level, and ullage: meter, centimeter, millimeter, feet, or incLevel rate: meter/second, meter/hour, feet/second, feet/hour, inch/minuteSignal strength: mV |
| Antennas | Parabolic, Cone, Still-pipe array, LPG/LNG, 1-in./2-in. still-pipe |
| Operating temperature in tank | Max. +230 °C (+445 °F) |
| Measuring range | 0.8 to 30 m (2.6 to 100 ft.) below flange. |
| Pressure range | Clamped/threaded: -0.2 to 0.2 bar (-2.9 to 2.9 psig) Welded: -0.2 to 10 bar (-2.9 to 145 psig) |
Rosemount™ 5900C Radar Level Gauge
