FineTek FDM Mini Float Level Switch

FineTek FDM Mini Float Level Switch

Tight installation space doesn’t have to mean compromising on reliability — the FineTek FDM Series is a compact magnetic float level switch built for exactly that scenario, delivering accurate liquid level control in a footprint small enough for confined vessels, machinery, and OEM equipment.

How It Works

The FDM relies on buoyancy and magnetism. Its float element, sized for a specific minimum fluid density, carries a magnet. As the float rises to meet the stationary stem, the magnet actuates a sealed reed switch, opening or closing the electrical contact — and the contact reverses state again as the magnet moves away.

Key Features

  • Ultra-compact design for confined installations
  • Sealed reed switch output — no moving electrical parts
  • Immune to electrical interference
  • Material options resistant to chemicals, high temperature, and pressure
  • Cost-effective and simple to install

Applications

  • High, low, or intermediate level detection in small vessels
  • Small machine and OEM equipment control
  • Reservoir and coolant tank monitoring

Industries Served

  • Food and beverage
  • Hydraulics
  • Marine
  • Machine building and OEM
ApplicationHigh/low/intermediate liquid level detection in small vessels; small machine control
Operating PrincipleBuoyancy and magnetism – float rises with liquid level, magnet activates a reed switch
Detecting MediumLiquids with specific gravity greater than the float SG
Switch TypeReed switch; Pivot-activation (FCH type) or Perpendicular-activation (FCV type)
Contact TypeSPST, SPDT, NO, NC
Switching Capacity50W (SPST) or 10-60W depending on model
Switching Voltage240 VAC / 200 VDC standard
Switching Current0.5-1A max (carry current 1A max)
Operating TemperatureStandard -20C to 120C; plastic models -20C to 80/120C; high-temp option to 200C
Process PressureAtmospheric up to 50 kg/cm2 depending on model; typical 4-12 kg/cm2
Float MaterialPP, PVDF, Polysulfone (plastic); NBR (elastomer)
Stem/Shaft MaterialSUS 304, SUS 316, SUS 316L (stainless); PP, PVDF (plastic)
Process Connection1/8 NPT, 1/8 PF, 3/8 PF, 1/2 PT, 1/2 NPT, 2 inch
CertificationUL (select models); Ex-proof option TS Ex mb IIB T6 Gb; CE

Download FineTek FDM Mini Float Level Switch information here

Datasheet: 
Manual:

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