Dynamic vapour compensation option for 5300 series
An
Emerson Process Management product story
Edited by the Engineeringtalk editorial team
Jul 15, 2009
Emerson Process Management has introduced a new option for its Rosemount 5300 series of high-performance guided-wave radar (GWR) level transmitters.
The dynamic vapour compensation (DVC) option eliminates accuracy errors associated with varying pressure and/or temperature that occur in vessels where steam vapour is present.
Emerson Process Management has introduced a new option for its Rosemount 5300 Series of High Performance Guided Wave Radar (GWR) level transmitters.
The greater accuracy achieved, combined with no moving parts or calibration requirement, can improve overall plant efficiency and reduce maintenance costs for operators in a range of processing industries including oil and gas production, chemical plants and power generation.
The DVC option, which comprises a probe with built-in reflector and software, is corrosion-resistant, offers improved safety with gastight dual seal, has no moving parts and is maintenance-free.
Designed for challenging level and interface measurements on liquids, slurries and solids, the 5300 series GWR transmitters are virtually unaffected by process conditions and have almost no installation requirements.
The DVC uses a reference reflector at a fixed distance on a rigid single probe to measure the vapour dielectric.
This measurement is then used to automatically compensate for vapour dielectric changes resulting in a final accuracy of within two per cent (compared with up to 30 per cent specific gravity error in density-based level measurements or up to 20 per cent for GWR if no compensation is made).
The types of applications where this measurement is required include boilers, de-aerators, boiler-feed water heaters and steam-drums.
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