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

Literature:


+ Product Catalog
+ Instruction & Operating Manual