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Kenco KEFS Electric Float Switch

KEFS Electric Float Switch

The KENCO Model KEFS uses a float to determine the presence or absence of liquid in a vessel at the process connection. The float arm assembly consists of a float at one end and a magnet at the other. As the level in the vessel rises, the float rises and the magnet falls. The magnet actuates a second magnet on the other side of the pressure boundary. This second magnet causes the switch to change state.

The pressure boundary contains no seals; it is a solid stainless steel barrier that passes a magnetic field, but no liquids. It is impossible for the process liquid to enter the switch enclosure through this barrier. The electrical contacts consist of a microswitch that can be either a single-pole, Double-throw (SPDT) or Double-pole, Double-throw configuration (DPDT). The SPDT Switch is available with either a 5 Amp or 8 Amp current load. The DPDT Switch is only available with a 4 Amp current load.

Features:

  • Simple Installation – Switch can be easily installed at the process connection in the vessel wall with simple hand tools

  • Multiple Circuitry Options – Available with a 5A SPDT, 8A SPDT or 4A DPDT switch

  • High-Temp Option – 5A SPDT version available with High Temperature rating option up to 400°F

  • Stainless Steel Body – All wetted parts including switch body are manufactured from 303 Stainless Steel

  • Seal-less Switch Barrier – Magnetic switch actuator operates through a solid steel barrier. There are no seals between the process and the switch compartment that could potentially cause a switch failure.

Specifications:

Description Specification
Specific Gravity > 0.53
Wetted Parts Standard 303 Stainless Steel
Optional 316 Stainless Steel
Process Connection Size Standard 2″ NPT
Temperature Range Standard -67°F to 257°F (-55ºC to 125ºC)
Process Pressure Range Vacuum to 2000 psig
Switch Types & Ratings Standard SPDT; 5A @ 250Vac; 5A @30Vdc restrictive
Optional SPDT; 8A @ 250Vac; 12A @ 12Vac restrictive
Optional DPDT; 4A @ 250Vac; 5A @ 30Vdc restrictive
Housing Rating (CSA Certified) Division 1:
Class I; Groups C&D
Class II; Groups E,G
Class III; Type 4X/7/9
Conduit Connection 1/2" NPT


 

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