Drum Level

Steam Drum Level is both a critical and difficult measurement to take as control of the water level in the drum must be precise. A water level that is too high can result in water carryover into the steam piping. A level that is too low can expose the generating tubes (down comers), preventing the water in the drum from cooling the furnace tubes, possibly damaging them. Several factors make this measurement difficult to obtain. The steam drum itself may not be perfectly level, and even at steady state conditions, considerable turbulence in the drum can cause the level to fluctuate. In addition, a changing rate of water inflow and steam outflow adds to the potential for measurement error.
Rosemount's Guided Wave Radar (GWR) transmitters provide an alternative for steam drum level measurement, as they offer a number of important advantages over differential pressure and level technology. GWRtransmitters measure level in a way that is completely independent of liquid density, so the complexity of density compensation is not required. Further, GWR transmitters are able to measure level at temperatures up to 400°C and pressures up to 345 bar. They provide accurate and reliable measurements of liquid level even when the operating environment includes mechanical vibration and high turbulence.



Drum Level - Rosemount 5300 Guided Wave Radar
The 5300 has been known to have superior reliability and state-of-the-art safety features. With less need for headroom, the small packaging of the new segmented probe allows the 5300 to be installed in applications where a solid rigid probe was deemed difficult to install in the past. Additionally, you can now order the segmented probe with NACE certification.