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Model J52 Refrigerant Liquid Level Switch

Brand: Magnetrol
The Model J52 Refrigerant Level Switches are float actuated units designed for use on liquids with 0.60 specific gravity and above.

Technology - External Cage Switches

A permanent magnet is attached to a pivoted switch actuator.

As the float/displacer rises following the liquid level, it raises the attraction sleeve into the field of the magnet, which then snaps against the non-magnetic enclosing tube, actuating the switch.

The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, the float/displacer deactivates the switch.

Operating Principle

The buoyancy force of a process liquid on the float causes the float to ride on the liquid surface.

The movement of the float with the liquid level moves an attraction sleeve into the field of the switch magnet, pulling the magnet toward the sleeve and actuating the switch.
Features
  • Temperatures from -50 to +100 °F (-45 to +40 °C)
  • Maximum working pressure to 400 psig (28 bar)
  • Housing is completely sealed against entrance of moisture
  • Conduit seal with 24 in. (610 mm) lead wires
  • Welded float chamber assembly
  • Options:
    • ¾" NPT or ¾" socket weld connections
    • Housing choices of NEMA 4X steel, NEMA 4X/7/9 explosion proof, and NEMA 4 transparent Lexan®
    • Optional cryogenic insulation available, see bulletin 41-106
The Model J52 Refrigerant Level Switches are float actuated units designed for use on liquids with 0.60 specific gravity and above.

Technology - External Cage Switches

A permanent magnet is attached to a pivoted switch actuator.

As the float/displacer rises following the liquid level, it raises the attraction sleeve into the field of the magnet, which then snaps against the non-magnetic enclosing tube, actuating the switch.

The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, the float/displacer deactivates the switch.

Operating Principle

The buoyancy force of a process liquid on the float causes the float to ride on the liquid surface.

The movement of the float with the liquid level moves an attraction sleeve into the field of the switch magnet, pulling the magnet toward the sleeve and actuating the switch.
Features
  • Temperatures from -50 to +100 °F (-45 to +40 °C)
  • Maximum working pressure to 400 psig (28 bar)
  • Housing is completely sealed against entrance of moisture
  • Conduit seal with 24 in. (610 mm) lead wires
  • Welded float chamber assembly
  • Options:
    • ¾" NPT or ¾" socket weld connections
    • Housing choices of NEMA 4X steel, NEMA 4X/7/9 explosion proof, and NEMA 4 transparent Lexan®
    • Optional cryogenic insulation available, see bulletin 41-106
Models matching criteria: 5
Model FLS Floor-Mount Level Switch view more
  • Switch: Dry Contact
  • Connection: ¾" NPT
  • Housing: Type 4X
Out of Stock
Model FLS Floor-Mount Level Switch view more
  • Switch: Dry Contact
  • Connection: ¾" NPT
  • Housing: Type 4 Lexan
Out of Stock
Model FLS Floor-Mount Level Switch view more
  • Switch: Dry Contact
  • Connection: ¾" NPT
  • Housing: Type 4X/7/9
Out of Stock
Model FLS Floor-Mount Level Switch view more
  • Switch: Dry Contact
  • Connection: ¾" Socket Weld
  • Housing: Type 4X
Out of Stock
Model FLS Floor-Mount Level Switch view more
  • Switch: Dry Contact
  • Connection: ¾" Socket Weld
  • Housing: Type 4X/7/9
  • Available for Expedited Shipping
Out of Stock

Specifications

Approvals

  • CSA XP
  • FM XP
  • EAC (GOST) Ex ia
  • SIL 2

Switch

  • Dry Contact

Connection

  • 3/4” NPT
  • 3/4” Socket Weld

Basic Electrical Ratings

  • Voltage: 120 - 240 Vac, 24 - 240 Vdc
  • Dry Contact Non-Inductive Ampere Rating: 0.25 - 15.00

Applications

  • Chemical
    • Ammonia Storage
    • Catalysis Vessels
    • Chemical Reactors
    • Deionization Tanks
    • Heat Recovery Steam Generator (HRSG) - Power/Utilities
    • Neutralization
    • Scrubber Vessels
  • Common Applications
    • Level: Lubrication Oils & Hydraulic Fluids
    • Level: Process & Field Storage Tanks
  • Petroleum Refining
    • Catalysis Vessels
  • Power Generation
    • Ammonia Storage
    • Deionization Tanks
    • Heat Recovery Steam Generator (HRSG) - Power/Utilities