Switch-Tek™ LP50 Non-Intrusive Capacitance Level Switch





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



 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.:


 Cable jack. mat.: Polypropylene
 Cable type: 4-conductor, shielded #22 AWG
 Cable length: 10’(3m)
 Conduit entrance: 1/2” NPT
 Tank mat. comp.:


 Tank mounting: Bracket w/3M adhesive, plastic thermal weld
 Tank wall thickness:

< 1”(25mm)

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

General purpose

 Compliance: CE


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