T3B Datasheet, PDF (1/12 Pages) Magnetrol International, Inc. – Tuffy II® Liquid Level Controls with Electric Switches

Tuffy II^®
Liquid Level Controls
with Electric Switches
DESCRIPTION
The Tuffy^® II Liquid Level Switches are float-actuated
devices designed for horizontal mounting in a tank or
vessel through threaded or flanged pipe connections. The
compact size allows for installation in small vessels, while
its many features provide a variety of application uses.
The single switch mechanism is available in SPDT or
DPDT forms on units designed for fixed or adjustable,
narrow or wide differential and interface service levels.
This sales literature covers Tuffy II level switches that
have electric switches. For Tuffy with a pneumatic switch,
see bulletin 44-109.
TECHNOLOGY
The Tuffy II achieves switching action through the use of
a magnetic switch mechanism and a magnet attached to
the float assembly. Separating the two magnets is a non-
magnetic pressure barrier.
As the liquid level changes, the float, and therefore the
float magnet, moves. The float and switch magnets repel
each other causing movement of the switch magnet
assembly, tripping the switch and making or breaking an
electrical circuit.
FEATURES
• Pressure ratings to 2625 psi (181 bar)
• Process temperatures to +750° F (+399° C)
• Cost-effective clad flange design option
• NACE and/or ASME B31.3 construction
• Specific gravity as low as 0.40
APPLICATIONS
• Sour service (NACE)
• High/low alarm
• Single pump control
• Day storage tanks
• Corrosive processes (Hastelloy^® C wetted parts)
• Process vessels
• Boiler low water cut-off
• Interface level
• Explosion proof installations