Series B40 External Caged Liquid Level Switch


The B40 external cage type level switch is a float-actuated control specifically designed and constructed for high pressure, high temperature service conditions such as boilers. It is available in rugged industrial or ASME B31.1 construction.

Operating Principle


As the counter weighted float follows liquid level changes, a magnetic sleeve is moved into or out of the field of a switch-actuating magnet causing switch operation. A non-magnetic barrier tube isolates the switch mechanism from the controlled liquid.

Applications


Accumulators
Receivers
Flare pots
Scrubbers
Flash tanks
Knockout drums
Storage tanks
Separators

Features


Choices of chamber materials include carbon steel, stainless steel and chrome-moly
300 series stainless steel float
Choice of switch mechanism:
Dry contact
Hermetically sealed
Minimum specific gravity 0.65
Choice of switch mechanism enclosure:
TYPE 4X polymer coated steel
TYPE 4X/7/9 Class I, Div. 1, Groups B, C & D, polymer coated aluminum or cast iron
Choice of tank connection:
1" welding nipples
1" or 1 1⁄2" socket welds

Options


ATEX housing
Flanged connections
Temperature extensions
Low specific gravity

APPROVALS


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

Literature:


+ Product Catalog
+ Instruction & Operating Manual