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    High Pressure External Caged Liquid Level Switches
     
    High Pressure External Caged Liquid Level Switches
    High Pressure Liquid Level Switches are displacer actuated units, utilizing a single switch mechanism for level alarm or control functions. These units are designed for service pressures up to 5000 psig (345 bar) and liquids with specific gravities of 0.40 and above.
     
    Operating Principle

    Liquid level movement changes the buoyancy force on a displacer suspended from a range spring. The force change on the spring causes it to extend or compress, moving an attraction sleeve into or out of the field of the switch magnet, actuating the switch.

     
    Applications
    • Hydraulic accumulators
    • Natural gas receivers
    • H.P. scrubbers
    • Hydrocarbon flash tanks
    • Compressors

    Features
    • Fabricated carbon steel cages
    • Model B74 available with 304 or 316 stainless steel cages as standard
    • Inconel displacer spring and stainless steel trim
    • Stainless steel displacers
    • Sealed or flanged cages
    • Pressures to 5000 psig (345 bar)
    • Temperatures to +750° F (+399° C)
    • Specific gravity as low as 0.40
      Options
    • Special levels/body extensions
    • 316 and 304 stainless steel chambers
    • NACE construction
    • Gold switch contacts
    • Interface detection
    • Vent and drain connections
    Approvals
    • XP=Explosion Proof
    • IS=Intrinsically Safe
    • NI=Non-Incendive
    • NS=Non-Sparking
    • ELV=EMC/Low Voltage

    • XP

    • XP

    • ELV

    • XP, IS

    • YES
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