Fuel Level Sensors

Are You In Need of High Quality, Low Cost Fuel Level Sensors?

Rochester Sensor’s high quality Fuel Level Float Style Sensors provide consistent reliable signals measuring the diesel fuel level in a tank. These sensors are made with durable solid Buna Floats or optional Stainless Steel Floats that slide on a brass or stainless steel stem. As the float moves over the switch, its built in magnetic field activates the reliable, internal switch. The fuel level sensors are typically mounted from the top of the tank and can be built with quick connect cam and groove fittings affording quick and easy access to the sensor. High quality cable or Teflon wire makes for reliable connections to the control panel. Available Nema 4X rated housings are the best choice for outdoor applications.

Benefits of Using Rochester Sensors Fuel Level Sensors

Rochester Sensors fuel level sensors are designed to last several hundred million cycles when the load switching and the operating environment is optimized. The fuel level switches are highly reliable and are designed to a 1/8” tolerance and 1/16” repeatable accuracy. Our special low profile Buna float option allows for multiple levels to be positioned near each other on the same sensor for tight switch points in both shallow or deep fuel tanks. The affordable, all stainless-steel design is an excellent option for Bio Diesel fuels or DEF applications. Our UL recognition gives you peace of mind. Custom fuel level sensors can be built to meet your exact specifications.

Typical Applications

Diesel fuel tanks that power backup electric generators are a very common application for Rochester Sensors fuel level sensors. These sensors have been installed in backup generators from locations in hurricane vulnerable tropical areas to remote Alaska mountain villages and everywhere in between. Our sensors can be found in diesel fuel tanks, gasoline tanks, DEF applications and other tanks measuring a variety of different liquids. Fuel Level Sensors are used for high level and redundant high level signals to alert the operator that the fuel tank is full, eliminating spills from over filling the tanks. Process level switch points such as ¾, ½ and ¼ full provide back up for continuous level tank sensing and Low and Critical Low provide signals to insure the generator does not run out of fuel.

Performance Advantages & A Track Record You Can Trust

Rochester Sensors provides the best combination of low cost, high quality and quick turn manufacturing. We can build your custom fuel level sensor. Our commitment to providing the highest level of satisfaction will be evident the minute you contact us. Our commitment to quality drives our organization’s structure. Rochester Sensor’s employees take pride and accountability for every sensor built. Our strict adherence to quality procedures and quality components maximize durability and life of your fuel level sensors.


  • Material: Stainless Steel and Brass
  • Fittings: NPT, SAE, Flanges, Cam and Groove fittings and others
  • Float Material: Buna or Stainless Steel
  • Stem Length (Tank Depth): Up to 20 feet long
  • Switch Ratings: Up to 100 Watts, 265 Volts and 3 amps (none can be exceeded)
  • Lead Wire: up to 1000 ft. long
  • Electrical Enclosures: Neman 4X, group 1, Class I, Groups C & D
  • Operating Temperature range: -40F to +200F
  • Maximum Pressure: up to 300 PSI
  • Life Cycle Expectancy: up to +100 Million cycles
  • UL Recognized: # E324587
  • FL DEP: EQ-817

Legendary Service

Industry leader in customer satisfaction & meeting your personal float switch needs!

Industries We Serve

  • Oil/Water Separators
  • Waste Water Treatment Equipment
  • Diesel Fuel /Oil tank and Transfer Systems
  • Fuel Management
  • Chemical Processing and Storage
  • Freon Recovery
  • Lubrication Equipment

Popular Fuel Level Sensors