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  • LP50 Switch Tek LP50 Non Intrusive Capacitance Level Switch
  • Accuracy: ±1mm in water
  • Dielectric range: less than 10 constants
  • Conductance range: less than 100µ
  • Level detection through plastic or fiberglass walls
  • Contact type: (1) SPST relay
  • Process temp: -40 to 176°F (-40 to 80°C)
  • Contact output: Selectable NO / NC
  • Enclosure rating: NEMA4X (IP65)
  • Enclosure material: PSO
  • Contact rating: 60 VA, 1A maximum
  • Repeatability: ± 0.5mm in water
  • Cable jacket material: Polypropylene
  • Cable type: 4-conductor, shielded #22AWG
  • Cable length: 10’(3m)
  • Conduit entrance: 1/2” NPT
  • Tank mat. comp.: Non-metallic
  • Tank mounting: bracket w/3M adhesive, plastic thermal weld
  • Tank wall thickness: less than 1”(25mm)
  • Bracket material:
    • 6005; Polyethylene
    • 1005; Polypropylene
    • 5005; PVDF

The Flowline LP50 Switch Tek Level Switch is a general purpose non-intrusive capacitance level switch that provides reliable liquid level detection of water based conductive liquids with non-coating and/or scaling characteristics with a 1A relay output. Media examples include hydrochloric, sulfuric acid and water. The liquid level sensor is bracket mounted on the exterior wall of non-metallic tanks and applied as a high level alarm or low level alarm.

Additional features and benefits of the Flowline LP50 Switch Tek Level Switch include:

  • Non-intrusive level detection through plastic or fiberglass walls
  • Installed with polyethylene, polypropylene or PVDF adhesive 3M mounting brackets
  • Rugged PSO enclosure rated NEMA4X with conduit connector
  • 60VArelay selectable NO or NC via power supply wiring polarity
  • Ideal for high purity conductive liquids
  • Three different bracket materials makes attachment to tank easy
  • Great for non-metallic or FRP tanks up to 1" thick
  • Use as a high or low level switch

Mounting Bracket

Flowline LP95 Mounting Bracket
Non-Intrusive Capacitance Mounting Bracket: polyethylene, polypropylene or PVDF


Please consider these optional accessories.

Flowline Single Controller NEMA Box
Single Controller, Windowed, 35mm Rail, Polycarbonate
Flowline Single Controller NEMA Box
Two Controller, Windowed, 35mm Rail, Polycarbonate
Flowline LC4 / LC9 Series Switch Pro Remote Level Controller
Three configurations for pump and valve control, fail-safe relay control of pumps or valves with 0-60 second delay