Sigma Controls, Inc.
217 S. 5th St. Perkasie, Pa 18944
phone 215.257.3412 - fax 215.257.3416

Sigma Controls

Series 1500 Multi Float Switch

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  • 316SS Central Shaft
  • 316SS or Buna FloatsPositive Float Stops
  • 1.5" or 2" NPT Process Connection
  • Adjustable Connection Location
  • Weather Proof Terminal Head
  • 1, 2, 3, or 4 Float System
  • 1 AMP @ 250 VDC Switching Element


Sigma Series 1500 Float Level Switches are specifically designed to meet the harsh conditions found in industrial, municipal, environmental and machine level control applications. Available with up to four (4) level stages, the Series 1500 utilizes hermetically sealed reed ease of installation in tanks, drums or sight switches actuated by a magnetic embedded in the glass. Floats are restricted in their movement by positive float stops.

A non-metallic weatherproof head contains a screw terminal barrier strip for field connections through a tank top mounted fitting. Floats are provided as standard in 316SS or Buna N, however, many other non-metallic materials are available as special order. 1-1/2" or 2" NPT process connections facilitate ease of installation in tanks, drums or sight glass. Multiple stage independent switches permit both pump control and alarm functions to be carried out by a single switch assembly, easily installed.


Switching Element:
Hermetically Sealed Reed Switch
Rated @ 1A @ 250VDC

316SS Shaft, Brass Unions, (SS Optional)
PVC or C.S. Process Connection, Ryton Terminal
Weatherproof Head

Float Construction:
316SS, Buna 'N'

Electrical Connections:
Screw Terminal Barrier Strip in Ryton Head
1/2" Conduit Connection

Pressure Rating: 150 PSI Max.

Temperature Rating: 150° F


  • Tank Level Alarms
  • Pump Control
  • Cooling Tower Basins
  • Effluent & Holding Tanks
  • Condensate Tanks
  • Sump Alarm and Control
  • Drum Level Alarm