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DESCRIPTION
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 4047 PSIG (279 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. (Consult factory for Hastelloy displacer.)
- 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.
Application
Modulevel pneumatic liquid level controls are widely used in utility power generation, chemical and petroleum processing operations, such as:
- Steam generator feedwater heater regulation
- Fractionating column level transmitter
- Ethanolamine level transmitter
- Vent gas scrubber level control
- Drip pot condensate level contro
- Flash tank level transmitter
- Boiler level control
TECH DATA
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