Modulevel® Pneumatic and APM Liquid Level Control0 pages

Modulevel®
Pneumatic and APM
Liquid Level Control

Modulevel pneumatic liquid level controls are displacement
actuated level sensors that provide output signals in direct
proportion to changes in liquid level.
Simple modular design and the Magnetrol proven magnetic
coupling make Modulevel controls versatile, highly stable,
vibration resistant and adaptable to extremes in temperature and pressure.

Features
• Standard models handle
service temperatures
from -150° to +700° F
(-101° to +371° C) and
pressure to 4265 PSIG
(318 Bar).
• Stable output signal is
unaffected by surface
turbulence. Prevents
control valve “hunting”
and extends valve life.
• Controller head may be
removed without disturbing pressure boundary.
Permits service or replacement without shutdown of
process.
• Simple calibration prior to
installation, by substituting weights for displacer
or by controller head calibration with displacer.
• Accurate output signal
provided over a wide
specific gravity range.
• Controller head rotates
360°, simplifies pneumatic
piping hookup.

• 316 SS displacer and
trim. Inconel & 316SS
range springs.
• Easily calibrated without
moving tank liquid level,
for reduced installation
time and cost.
• Pilot relay provides a 4 to
1 amplification of pilot
pressure signal to speed
value response.
• Built-in visual level indicator is independent of
air supply.
• Optional pneumatic-tocurrent interface transducer
for use in electronic control applications.
• Optional proportional
plus integral control.
• Optional differential gap
(on-off) control.
• Optional High-Low electronic alarm signal
provides inexpensive
backup alarm.
• Fabricated construction.

Applications
Modulevel pneumatic liquid level controls are widely used in
utility power generation, chemical and petroleum processing operations, such as:
• Steam generator feedwater
heater regulation

• Vent gas scrubber level
control

• Fractionating column level
transmitter

• Drip pot condensate level
control

• Ethanolamine level
transmitter

• Flash tank level
transmitter
• Boiler level control
SM

Worldwide level and flow solutions