The general purpose non-intrusive capacitance level switch 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.


  • Non-intrusive level detection through plastic or fiberglass walls
  • Installed with PE, PP or PVDF adhesive 3M mounting brackets
  • Rugged PSO enclosure rated NEMA 4X with conduit connector
  • 60VA relay selectable NO or NC via power supply wiring polarity


P/N Description From
LP50-1005 Switch with PP bracket $230.00
LP50-5005 Switch with PVDF bracket $255.00
LP50-6005 Switch with PE bracket $230.00



Accuracy: ± 1mm in water

Repeatability: ± 0.5mm in water

Dielectric range: > 10 constants

Conduct. range: > 100 μ

Supply voltage: 12-36 VDC

Consumption: 25 mA maximum

Contact type: (1) SPST relay

Contact rating: 60 VA, 1A maximum

Contact output: Selectable NO / NC

Process temp.: F: -40° to 176°, C: -40° to 80°

Enclosure rating: NEMA 4X (IP65)

Enclosure mat.: PSO

Cable jack. mat.: Polypropylene

Cable type: 4-conductor, shielded #22 AWG

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: < 1” (25mm)

Bracket material: -6005: Polyethylene, -1005: Polypropylene, -5005: PVDF

Classification: General purpose

Compliance: CE