L500E Series
Custom multi-level float switches for large tanks in hazardous locations

The wider displacement L500E Multi-Level Float Switch for Hazardous Locations is designed to monitor up to six levels on a single device. With only a single entry, the L500E can track changing levels within a large tank, as well as monitor liquid interfaces of dissimilar liquids for oil/water separations, chemical emulsions and condensation levels. Probe lengths are available up to 15′ with various enclosures, 316 stainless steel floats, and mounting types to suit most applications.

Features
Wiring options
Approvals
Mounting and materials
Float specifications
Downloads

Modular Design
Probe Lengths Up to 15′
Up to 6 Switch Positions
50 VA Switch (Standard)
Adjustable Model Options
Explosion-Proof Rating

Operation is based upon simple buoyancy, whereby a spring is loaded with weighted displacers, which are heavier than the liquid. Immersion of the displacers in the liquid results in buoyancy force changing to net force acting on the spring. The spring compresses as the buoyancy force increases.

A magnetic sleeve is connected to the spring and operates within a non-magnetic barrier tube. Spring movement causes the magnetic sleeve to move into the field of a pivoted magnet, actuating a switch mechanism located outside the barrier tube. Built-in limit stops prevent over stroking of the spring, under level surge conditions.

UL & CUL: Recognized
FM: Class I, Div. 1, Groups A, B, C, D
Class II, Groups E, F, G
Class III, T4, Type 4

2" NPT 316 STAINLESS STEEL   SPST 50 VA      NO ENCLOSURE
3" NPT Hastelloy   SPST 100 VA Aluminum, 1/2" NPT
4" NPT   SPDT 100 Watt   Small Cast, 3/4" NPT
2-1/2" Sanitary Flange SPST 50 VA w/ Terminal   Large Cast, 1/2" NPT
2" #150 ANSI Flange SPST 100 VA w/ Terminal
2-1/2" #150 ANSI Flange SPDT 30 VA w/ Terminal
3" #150 ANSI Flange
3" #300 ANSI Flange

316 Stainless Steel	2" BALL	-40º to +300º F (-40º to +148.9º C)	750 PSIG (51.7 BAR)	0.79
316 Stainless Steel	2.25" Ball	-40º to +300º F (-40º to +148.9º C)	200 PSIG (13.8 bar)	0.65
316 Stainless Steel	3.5" Ball	-40º to +300º F (-40º to +148.9º C)	300 PSIG (20.7 bar)	0.4
316 Stainless Steel	1.5" x 1.3" Cylinder	-40º to +300º F (-40º to +148.9º C)	120 PSIG (8.3 bar)	0.8
316 Stainless Steel	2" Oblong	-40º to +300º F (-40º to +148.9º C)	300 PSIG (20.7 bar)	0.8