Liquid Level Switch
Experience enhanced tank monitoring and overfill protection with the Preferred model PLS tank level sensor. This improved design offers adjustable probe height for various installations and easy removal for regular testing, thanks to the quick disconnect wiring head connection. Choose between brass or stainless steel construction, making it suitable for biodiesel and DEF monitoring. The PLS probe, with a minimum float setpoint spacing of just 1 1/4", is perfect for generator belly tanks.
- Custom Fabricated Up To 72" In Length
- May Be Used With Any Clean, Low, Viscosity, Non-Adhering Fluid
- Switches May Be Specified "Open" Or "Closed"
- Overview
- Application
- Specifications
- Documents
The Model PLS Level Switch provides up to 6 independent liquid level switches on one sealed probe up to 72" in length. Magnetic reed switches are encapsulated in the sealed brass probe where they are protected from liquid and vapors. Buna-N or polypropylene floats, containing magnets, slide on the outside of the brass or SST stem. A rising liquid level causes each float to rise to its upper travel stop position where it actuates a switch. Any switch may be specified “open” or “closed” with the float at its lower stop position.
- Custom Fabricated Up To 72" In Length
- May Be Used With Any Clean, Low, Viscosity, Non-Adhering Fluid
- Switches May Be Specified "Open" Or "Closed"
The Model PLS-4 Level Switch may be used with any clean, low viscosity, non-adhering fluid compatible with brass, solder, epoxy and Buna-N. It is commonly used on fuel oil day tanks to control the addition of oil from remote pumps, and to alarm high and low levels. Other applications include pressurized or vented tanks for water, hydraulic fluid, lubricating oils or distillate fuels. Insert the unit vertically and then thread it into a 1 ¼" NPT half coupling on the tank shell. The wiring enclosure is not designed to be submerged. A suitable protective enclosure for access such as the Preferred Sidewalk Box Model 13071 should be provided when installing underground.
Fluid Temperature: 180° F Maximum
Fluid Specific Gravity: 0.5 Minimum
Fluid Pressure: 150 PSI Maximum
Electrical: 100W at 120 VAC Resistive 8VAC Relay Coil Pilot Duty
Switch Action: Can Be N.O. or N.C.
Housing: Cast Aluminum, UL Listed
Wetted Parts: Brass Probe And Buna-N Float
Liquid Level Switch Cutsheet
Liquid Level Switch Order Sheet