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Home > Model T21 Dual Stage Float Level Switch
 Model T21 Dual Stage Float Level Switch   Printer Friendly Version
T21 tandem models combine the functions of two separate narrow differential level controls in a single, compact, easy to install instrument. Two independent switch mechanisms are employed to provide two actuating levels at least 8" apart, such as high and low level alarm operation.

Model T21 tandem float switches are available with optional cages to help stabilize the floats under turbulent conditions.
Operating Principle Features Industries Options Downloads Approvals
 
The buoyancy force of a process liquid on the float causes the float to move with the liquid surface. The movement of the float moves an attraction sleeve into the field of the switch magnet, pulling the magnet toward the sleeve and actuating the switch.

 

  • Actuating depths of up to 48 in. (1219 mm)
  • Customized for specified actuation levels and specific gravity
  • Various float sizes
  • High reliability
  • Maintenance free
   

  • Tank connection type and size
  • Dry contact, hermetically sealed or pneumatic switch mechanism
  • Float guide cages
  • Special materials and codes of construction
 
 Literature: (US English)
  Instruction Manual
  Sales Literature
  Electric Switch Manual
  Hermetically Sealed Switches
  R Series High Temp Switch

  
  • XP   

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  • XP   

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  • ELV   
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  • XP   

  • IS   

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  • YES   
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    XP = Explosion Proof  •  IS = Intrinsically Safe  •  NI = Non-Incendive  •  NS = Non-Sparking  •  ELV = EMC/Low Voltage