T20-1B2A-BKP Datasheet, PDF (1/8 Pages) Magnetrol International, Inc. – Top Mounting T20 and T21 Liquid Level Sw

Top Mounting
T20 and T21
Liquid Level Switches
DESCRIPTION
T20 and T21 units are simple, reliable float switches,
designed for top mounting into tanks or vessels. T20
units utilize a single switch mechanism and float. T21
tandem units utilize two switch mechanisms and two
separate floats. T20 and T21 models are available for
any type of open or closed vessel, with either threaded
or flanged type mounting, and actuating depths of up to
48 inches (1219 mm).
FEATURES
• Float diameters of 3" × 5", 4" and 4¹â„2" available
• Tank connections available in 1" NPT, cast iron,
forged, or stainless steel flanges
• Choice of switch mechanism:
Dry contact
Hermetically sealed
Pneumatic
• Choice of switch enclosure:
NEMA 1 carbon steel for pneumatics
TYPE 4X/7/9 Class I, Div. 1, Groups C & D,
polymer coated aluminum
TYPE 4X/7/9 Class I, Div. 1, Group B,
polymer coated aluminum
APPLICATIONS
• Day tanks
• Condensate receivers
• Fuel storage tanks • Cooling towers
• Flash tanks
• Interface
• High and high/high alarm from single tank entry
OPTIONS
• NACE
• ATEX approved housing
• Housing heater
• Float guide cage
• Tropicalized switch mechanism
• Special flange face finishes
• Submersible housing
• Elevated temperature