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WORKING PRINCIPLE The reed switch relies on two basic scientific principles namely: buoyancy and magnetism. Buoyancy causes the float (which contains a magnet) to rise with the liquid and magnetism helps open and close the switch. A change in liquid levels raises or lowers the float up or down. The end of the pivot arm (non float side) contains a permanent magnet that can repel the switch magnet (inside the stationary ‘stem’ of the entire structure). The side mounted float level sensor (FF series) are manufactured specifically for horizontal mounting on tanks or vessels. They work well as high...

CONFIGURATION DIAGRAMS 9 Fig.(1) Reed switch type Fig.(2) Micro switch type Tank's wall The diameter and length of the connecting pipe (of a tank) are in direct proportion. flange UNIT: mm Pipe dia. 45-50 (A) Length (B) (Max.)

TYPE APPROVAL PROGRAM Operating Temp. Electrical Contact Contact Capacity Contact Element Housing Spec. Reed Switch Aluminum Alloy IP65 Reed Switch Reed Switch Reed Switch Reed Switch Reed Switch SPEC. MODEL ※ Above-mentioned models are approved by class societes : DNV 、 LR 、 GL 、 BV 、 ABS 。

MODELS Order No. F F99 9 99 Connecting (Refer to p11) Float 10: Single Switch 12: Dual Switch

HIGH TEMPERATURE Order No. FF20 9 99 Connection (Refer to p11) Float

Order No. F F99 9 99 Connecting (Refer to page 11) Float 30: Mini Type 40: Double Angle Standard 45: Double Angle High Temperature 50: Vertical Standard 55: Vertical High Temperature

ANTI-CORROSIVE MODELS

SQUARE FLANGE & TEST ACCESORIES 1. Housing material: Aluminum (IP65) 2. Suitable S.G.: >0.65 3. Operation temp.: -20~100BC 4. Contact mode: SPDT(1C) 5. Contact rating: 5A/250Vac Test Board (Optional) Material: SS41 Please weld test board with level instrument. Without level dropping, level instrument can be checked regularly if functions well. Check list Check if mechanical parts of level switch function well? Check if float functions well? Square flange 6. Operation pressure: 15kg/cm2 7. Wetted parts: SUS304 8. Weight: (approx.) 1.2 kg

IMPORTANCE FOR INSTALLATION 1. SUS304/SUS316 materials are not available for corrosive application. 4. Check the liquid’s S.G. level before installation. 2. The cable duct(s) must face downward to prevent moisture seeping in. 5. The mounting hole must be larger than the external diameter of the float. (Please refer to p2) 3. The float and extension rod must be inserted into the bin completely. 6. Don't mount the devices near the bin's inlet or outlet.

ORDER INFORMATION Order No. FF !! ! !! (!) (!) 1 0 C EM S T 55: Vertical High Temp. 62/66: High Temp Radiator 80: Anti-acid/alkaline 81: Without Housing Only FF81E 90/96: Square Flange 10/12: Standard 15: Mini 20/26: High Temp. 40: Double Angle Standard 45: Double Angle High Temp. 50: Vertical Standard ※ Mini type only available float type(C.G.H) FLOAT TYPE B: f75x120 (Operation Pressure 10kg/cm2 C: f41x150 (Operation Pressure 15kg/cm2 2 D: f50x150 (Operation Pressure 30kg/cm 2 G: f41x125 (Operation Pressure 15kg/cm H: f41x100 (Operation Pressure 15kg/cm2 B CUSTOM LENGTH(L) (UNIT: mm) TEST BOARD...

EXPLOSION PROOF Db IPSS Connecting Type Float Type

ORDER INFORMATION NEPSI PROOF No.GYJ111213 Ex d IIC T3~T6 PTB PROOF No. 05 ATEX 1025 II 2G Ex d IIB T6~T4 Gb II 2D Ex tb IIIC T85BC~T135BC Db IP65 Order No. FF !! ! !! ! ! 7 0 C EM S T ORDER NO. 70: LF70 Explosion Proof 71: LF71 Explosion Proof 73: LF73 Explosion Proof 74: LF74 Explosion Proof 75: LF75 Explosion Proof FLOAT TYPE B: f75x120 (Operation Pressure 10kg/cm2 C: f41x150 (Operation Pressure 15kg/cm2 D: f50x150 (Operation Pressure 30kg/cm2 G: f41x125 (Operation Pressure 15kg/cm2 H: f41x100 (Operation Pressure 15kg/cm2 B CUSTOM LENGTH(L) (UNIT: mm) TEST ACCESORY ※ Total product length margin...

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