Aurora magnetic level indicator

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Aurora® magnetic level indicator

The Aurora^® combines the operating system of a conventional float-based magnetic level indicator (MLI) with the leading-edge Eclipse^® guided wave radar transmitter developed for level measurement applications. The result is true level-measurement redundancy in a single-chamber design.

Using a 3″ or 4″ chamber to house both the ECLIPSE probe and the MLI float, these devices operate seamlessly to provide continuous electronic guided wave radar measurement and visual indication. There are six basic configuration styles and more than 15 material selections for the AURORA magnetic level indicator.

For the first time ever, the ability to accurately and repeatedly measure ultra low dielectric media, high temperature/high pressure process conditions, and media with shifting and changing dielectric values can be accomplished with AURORA.

Magnetic level indicators

Technology

Magnetic Level Indicators (MLI) have revolutionized the global visual indication market by offering a safer, reliable, and high-visibility alternative to common gauge glass assemblies. Utilizing a combination of proven buoyancy principles along with the benefits magnetism, MLIs can be customized to fit virtually any process connection arrangement on the vessel.

The chamber and magnetic float is available in a variety of materials and pressure ratings to accommodate the wide variety of complex process applications present in the world’s major industrial facilities.

Guided wave radar

Technology

Micropower impulse radar (MIR) combines time domain reflectometry (TDR), equivalent time sampling (ETS), and modern low power circuitry. This synthesis of technologies creates a high-speed Guided Wave Radar (GWR) transmitter. The electromagnetic pulses are propagated via a waveguide that focuses the energy and yields a system many times more efficient than Non-Contact Radar.

ECLIPSE GWR transmitter
Broad range of chamber styles
Fabricated non-magnetic chamber
ASME and DIN flanges
Precision manufactured float
Flag or shuttle type indicator

Options

Level switches
Level transmitters
Stainless steel scale
Custom scales

Chemical

Ammonia storage
Blending operations
Chemical injection
Chemical injection skids
Chemical reactors
Chlor-alkali process
Condenser
Deionization tanks
Distillation columns
Distillation towers
Fermentation vessels
Heat Recovery Steam Generator (HRSG) – Power/Utilities
Liquid-Liquid extraction
Reboiler
Reflux drum
Scrubber vessels
Steam drums for chemical industry
Surge drums
Vapor and Liquid Separation

Common applications

Condensate and Waste Heat Recovery

Crude oil

Chemical injection
Crude dehydration
Crude desalting
Crude Dewatering
Crude stabilization – degassing
Gun-barrel separators
Horizontal separators
Process & Field storage tanks
Vapor recovery unit
Wellstream separation

Natural gas

Chemical injection
Chemical injection skids
Compressor Scrubber
Flare Knock-out Drum
Gas Dehydration
Natural gas separators
NGL recovery & Storage
Separators
Sour gas treatment
Sulfur Recovery
Vapor recovery unit

Nuclear power

Turbine steam generators

Petroleum refining

Acid settling tanks
Alkylation tanks
Blending operations
Catalytic reformers
Coking operations
Column reboilers
Crude desalting
Crude Dewatering
Diesel fuel storage tanks
Distillation columns
Distillation towers
Gun-barrel separators
Horizontal separators
Hydrocracking
Hydrodesulfurization
Isomerization
Reboiler
Separator boots
Solvent extraction

Power generation

Ammonia storage
Boiler blowdown tanks
Condenser hotwells
Deaerators
Deionization tanks
Feedwater heaters
Flash tanks
Heat Recovery Steam Generator (HRSG) – Power/Utilities
Preflash drums
Reboiler
Reflux drum
Steam Drum – improved performance
Steam drums for power generation

Renewable energy

Geothermal
Solar

The Aurora® Magnetic Level Indicator (MLI) is a hybrid instrument that utilizes both buoyancy and Guided Wave Radar measurement principles in the same chamber.

MLIs rely on a magnetic float that travels up and down with the liquid in a chamber, which is mounted to a pressure vessel or storage tank. The float contains a magnetic assembly that interacts with an externally-mounted visual indicator. As the float follows the liquid, the magnetic field causes highly contrasting flags in the visual indicator to rotate, therby displaying a highly visible representation of the level. In Aurora, a float and guided wave radar probe are separated by a perforated baffle plate, creating two distinct measurement zones within the chamber. This provides a redundant level instrument while minimizing overall footprint and weight.

Magnetically-actuated external point switches and continuous external transmitters can expand the function of the MLI by providing high or low alarms, as well as real-time level data supplied to the control room (4-20mA, HART®, Foundation fieldbus®).

ATEX	Ex d, Ex ia, Ex n, Ex t
CCOE	Ex d, Ex.ia
CSA	XP, IS, NI
FM	XP, IS, NI
EAC (GOST)	Ex d, Ex ia, Ex n, Ex t, Metrology
IEC	Ex d, Ex ia, Ex n, Ex t
Inmetro	Ex d, Ex ia, Ex n, Ex t
SIL	SIL 2 (1oo1)
Marine	Lloyd’s Register of Shipping (LRS)
Steam Drum	Lloyds EN 12952-11 (water tube boilers) Lloyds EN 12953-9 (shell boilers)
TÜV / DIBt	WHG § 63, overfill prevention

Agency approvals for Eclipse 706 GWR. Other approvals are available.

Features

ECLIPSE GWR transmitter
Broad range of chamber styles
Fabricated non-magnetic chamber
ASME and DIN flanges
Precision manufactured float
Flag or shuttle type indicator