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Applications EngineeringModel RF-OH11 -Plastic Horizontally Mounted Level Switch

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The RF-OH11 is a polypropylene level switch designed for horizontal mounting, providing adaptable functionality for low or high-level signaling. This capability is achieved through its reversibility, allowing the switch to be configured as normally open or normally closed according to specific application needs. The internal mechanism utilizes a magnetic float system; the float's permanent magnet activates a reed switch situated within a fixed stem to close the electrical circuit. This interaction occurs when the float aligns the magnet with the reed switch. The device comes standard with 300mm leads, though customization options are available for different lead or cable lengths to meet diverse installation requirements, subject to minimum order quantities. Such versatility ensures compatibility with a range of liquid level monitoring applications, making it a valuable component in precise fluid control systems.

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The switch comes with 300mm leads but can be made with various lead or cable lengths (please get in touch with your requirements, minimum order quantities may apply).

Principle

When the magnetic field of permanent magnet inside the float is moved into to the proximity of the reed switch inside the stationary stem, the reed switch contacts “snap” together and closes the electrical circuit. When the magnetic field is moved away from the reed switch, the reed switch contacts move apart and the circuit is opened.

  • Operating Temperature : - 20 to + 80 ° C
  • Switch rating : 240 VAC/ 200 VDC @ 0.5A
  • Wetted parts : PP
  • Electrical termination : Lead wire ( standard 300 mm )
  • Specific gravity : 0.78
  • Max pressure : ATM
  • Weight (approx) : 25 g
  • Mounting Thread : M12 x 1.5