Group: AMETEK
Catalog excerpts
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
Open the catalog to page 1Zero adjustment The key elements of the Modulevel pneumatic control are the magnetic coupling, which allows the controller to be mechanically isolated from the sealed sensing unit; the range spring, which dampens the action of the displacer; and the controller head, which provides a modulated pneumatic signal in direct proportion to the input from the vertical motion of the displacer. As the liquid level in the vessel increases or decreases, the buoyant displacer rises or falls. This motion, dampened by the action of the range spring to prevent response to the rapid fluctuations of...
Open the catalog to page 2Mounting arrangements Modulevel® pneumatic instruments Flanged top P51, P61 and P62 displacer models Modulevel pneumatic instruments are available in a variety of functions and styles to handle different application requirements. For mounting on top of the tank, flanged top models are available. They are used extensively in interface control applications where non-standard size displacers become necessary. An adjustable stainless steel displacer suspension cable is also available. Top mounting models are directly interchangeable with the external cage models. Choose from carbon steel or...
Open the catalog to page 3Model number construction Expedite ship plan (ESP) Many standard Modulevel pneumatic level controls are available for quick shipment, usually within one week after factory receipt of a purchase order, through the Expedite Ship Plan (ESP). Models covered by ESP service are conveniently color coded in the selection data charts which follow. To take advantage of ESP, simply match color coded model number codes and options (standard dimensions apply). ESP service may not apply to orders of ten units or more. Contact your local representative for lead times on larger volue orders as well as...
Open the catalog to page 4Model number construction Selection data Modulevel controls are identified by a ten-digit alphanumeric model numbering system. The model number describes model configuration, materials of construction, level ranges and other options vital to the performance and function of the instrument. Mounting & materials 1 of construction Specific gravity and temperature 3 Tank connection 4 Level range 5 Pneumatic instrument High pressure flanged cage displacer models 1 Mounting and materials of construction Model External Flanged Cage Body Material Carbon Steel Mounting Connection Code ANSI Head...
Open the catalog to page 5Selection data Model number construction Modulevel controls are identified by a ten digit alphanumeric model numbering system. The model number describes model configuration, materials of construction, level ranges and other options vital to the performance and function of the instrument. Mounting & materials 1 of construction 1 Mounting and materials of construction Body Material External Sealed Cage Mounting Arrangement Specific gravity and temperature Standard sealed cage displacer models Carbon Steel 4 Level range/displacer diameter Code *For 600 lb. pressure rating, refer to chart at...
Open the catalog to page 6Selection data Model number construction Modulevel controls are identified by a ten-digit alphanumeric model numbering system. The model number describes model configuration, materials of construction, level ranges and other options vital to the performance and function of the instrument. Example: P68-2F2A-PAJ Mounting Arrangement Style In-Tank Body Material Carbon Steel Float & Trim Specific gravity and temperature 1 Mounting and materials of construction Mounting & materials 1 of construction 2 Standard side mounted float models Tank connection & level range *Maximum pressure rating with...
Open the catalog to page 7Dimensional specifications NOTE: Controller head may be rotated through 360°. 1/4" NPT x 2.00 (51) long minimum nipple required 1/4" NPT x 2.00 (51) long minimum nipple required Optional nipple mounted filter regulator (4) 1/4" NPT Optional nipple mounted filter regulator 6.50 (165) ANSI standard flange Level range Level range Optional 3/4" NPT gauge glass tapping P61 and P62 Series Top Mounting 150, 300, 600 lb. Class (2) 1 1/2" or 2" NPT or socket weld (2) 1 1/2" or 2" ANSI standard flange P63 and P64 Series with Side/Bottom Connections 150, 300, 600 lb. Class Swing radius Outlet Size...
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