Orion Instruments Atlas - Manual (Page 14)

14 46-638 Magnetic Liquid Level Indicators
1.12 Internal Eclipse Transmitter Installation
The Eclipse Guided Wave Radar Transmitter can be
mounted in either the Gemini or the Aurora MLIs. The
Aurora is designed to support operation of the Eclipse in
the same chamber as the float. Due to this, the coaxial
type probe must be used. With the dual chamber Gemini
design, either the twin rod, coaxial, or single rod types
may be used. Caution should be exercised in probe selec-
tion to take into account, media dielectric, viscosity, tem-
perature, pressure, transition zone distances and overfill
requirements. Each Eclipse will be supplied complete with
an instruction manual. A review of the manual is recom-
mended prior to installation of the Eclipse transmitter in
the Gemini or Aurora MLI.
NOTE: Flag or shuttle indicator can be designed for mounting at any
angle. Do not rotate indicator after gauge is manufactured,
due to inability to rotate baffle plate once welding has been
completed.
2.0 Reference Information
2.1 Description
Magnetic Level Indicators (MLIs) are suitable for installa-
tion on process applications that will not restrict float travel
in the piping column. It is a magnetic coupled, local level
indicator which is isolated from the process in a sealed
non-magnetic external cage. Bi-color flags provide visual
indication of level up to 100 feet. Field-adjustable level
switches and transmitters are available as options.
The Atlas is a magnetically coupled local level indicator
isolated from the process via a sealed non-magnetic exter-
nal chamber. A fluorescent orange shuttle or series of bi-
colored flags provide visual indication of liquid level from
distances of up to 100 feet. Available switches for point
alarms include electronic DPDT, reed and pneumatic
technologies. Transmitter technologies for continuous
4–20 mA outputs include reed and guided wave radar.
Atlas is suitable for installation on process applications
including corrosive services that do not impede the move-
ment of the float in the piping column.
Aurora and Gemini incorporate a combination of the
Atlas magnetic level gauge and Magnetrol’s Eclipse
Guided Wave Radar. This represents the industries first
totally redundant mag gauge/transmitter combination.