Kenco Engineering KEFS - Manual

KENCO ENGINEERING COMPANY
P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4406
www.kenco-eng.com e-mail: [email protected]
MODEL KEFS LIQUID LEVEL FLOAT SWITCH
INSTALLATION / OPERATION INSTRUCTIONS
PRINCIPLE OF OPERATION
The Model KEFS uses a float to determine the presence or absence of liquid at the process connection. The float arm assembly
consists of a float at one end and a magnet at the other. As the level 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
(DPDT) Configuration. The SPDT Switch is available with either a 5 Amp or 8 Amp current load. The DPDT is available with a 5
Amp/30Vdc current load (See Switch Types and Ratings in the Product Specifications for more details).
MODEL DESCRIPTION
KEFS - - - -
Process Connection
Switch Rating
Temperature Rating
Wetted Parts
* High temperature option only available with 5A SPDT switch
(58639 Rev B)
Temperature Rating Wetted Parts
Description Code Description Code
Standard blank 303 SS (std.) blank
High* 400 316 SS S6
Process Connection Switch Rating
Description Code Description Code
1½” NPT N/A 5A SPDT SPDT5
2” NPT (std.) 2 4A DPDT DPDT4
8A SPDT SPDT8