High Liquid Level Alarm Switch

The Model HLS-LF High Level Switch is used on fuel oil storage tanks to provide a simple and reliable means of sounding an alarm or providing an electrical interlock as the liquid level approaches tank capacity.

  • Provides Simple And Reliable Means Of Sounding An Alarm
  • SPDT Snap Action Micro Switch
  • Actuated By A Stainless Steel Lever Float
  • Overview and Features
  • Application
  • Specifications
  • Documents
Overview and Features

The Model HLS-LF High Level Switch is used on fuel oil storage tanks to provide a simple and reliable means of sounding an alarm or providing an electrical interlock as the liquid level approaches tank capacity.

 

  • Provides Simple And Reliable Means Of Sounding An Alarm
  • SPDT Snap Action Micro Switch
  • Actuated By A Stainless Steel Lever Float
Application

The Model HLS Tank Fil-A-Larm Switch is used on light fuel oil storage tanks to reliably activate an overfill warning signal. This alerts the transfer operator to stop filling the tank. Federal codes for overfi ll prevention may be satisfied by an overfill alarm that sounds when the tank contents reach 90% of the tank capacity or one minute prior to overflow if the rate of fill is constant. Refer to Model HLS-LF for heavier No. 4, No. 5, and No. 6 fuel oil grades.

Specifications

Mounting: 1-1/4" NPT Half Coupling

Fluid Temperature: 275° F Maximum

Fluid Specific Gravity: 0.7 Minimum

Fluid Pressure: 100 Psig Maximum

Electrical: SPDT, 10 Amps / 120VAC, 5 Amps Resistive 30 VDC

Switch Trip: Specified By Customer, Maximum Length 25 Inches

Electrical Housing: Cast Aluminum, Weatherproof, Explosion Proof

Wetted Parts: Stainless Steel, Brass, and Cast Iron

UL listed: Class I Groups C & D, Class II Groups E, F, & G

Documents

HLAS Specification

HLAS Cutsheet