Liquid Level Detection

Magnetic Level Switch

Liquid Level Detection in Tank & Vessels

The FM series, side-mounted level sensors, are manufactured specifically for level detection in clean liquids such as oils, water, and chemicals. They are designed for horizontal mounting in a tank or vessel through flanged or threaded connections. To suit many different level sensing situations, a wide variety of models are available.

The FM series contains a hermetically sealed reed switch within the stem or flange and a permanent magnet at the end of the shaft. As the float rises or falls with the liquid level, the magnet activates the reed switch. Changing the mounting orientation can reverse switch action. They work well as high or low level alarm or control for light-duty applications. The FM series can be used in any non-hazardous tanks or vessels. However, they can be used in hazardous locations by connecting with intrinsic safety barriers. (Local approval for the combination system use of Intrinsic Safety standards is required.)

  • Easy Setup: Easy installation and long-lasting reliability
  • Durable Construction: Durable float with stainless steel construction
  • Reliable Performance: High-performance magnetic reed switch
  • Optimized Design: Side-mounted design for bilge and oil tank applications
  • Hazardous Location Safe: Works in hazardous locations with safety barriers

  • Mounting: JIS5K40A
  • Switch Rating: 50VA 0.5A 300V AC, 50W 0.5A 300V DC Max. (Resistive)
  • Operating Temperature: -10 to 120°C
  • Maximum Pressure: 2.5 MPa
  • Material: 
    • Mounting: 304SS
    • Shaft and Float: 316SS
    • Housing: ADC12
  • Cable Entry: G3/4
  • Protection: IP44
  • Minimum S.G.: 0.7
  • Life Expectancy: 1×10 Min. Operation
What is the FM-Series Magnetic Level Switch used for?

The FM-Series is designed for liquid level detection in clean liquids such as oils, water, and chemicals. It is commonly used in bilge tanks, oil tanks, and industrial liquid monitoring applications.

The switch features a hermetically sealed reed switch inside the stem or flange. As the float rises or falls with the liquid level, a permanent magnet inside the float activates the switch. The switch action can be reversed by changing the mounting orientation.

No, the FM-Series is specifically designed for horizontal mounting through flanged or threaded connections on the side of a tank or vessel.

The FM-Series is rated IP44, offering protection against solid objects over 1mm and splashing water from any direction.

Installation is quick and easy, with options for flanged or threaded mounting. It should be mounted horizontally on the side of a tank or vessel.

INDUSTRY

Chemical, Industrial Automation, Oil & Gas, Water & Wastewater

ENCLOSURE PROTECTION

IP44