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Dwyer Proximity Series CLS2 Capacitive Level Switch

SKU CLS2-W11RK1-036

Dwyer Proximity Series CLS2 Capacitive Level Switch


Spec Sheet/ IOM

Data Sheet

Catalog Page


Part Numbers:

  • CLS2-W11RK1-012:  12" probe length
  • CLS2-W11RK1-036:  36" probe length

Quick Specs:

  • Service: Liquids, powder and bulk materials compatible with wetted materials.
  • Wetted Materials: 316 SS and polyvinylidene fluoride (PVDF).
  • Temperature Limits: Ambient: -40 to 185°F (-40 to 85°C), -4 to 185°F (-20 to 85°C) with under 24 VAC/DC power supply; Process: -40 to 250°F (-40 to 121°C).
  • Pressure Limit: 365 psi (25 bar).
  • Enclosure Rating: Weatherproof, NEMA 4X.
  • Switch Type: DPDT (two form C).
  • Electrical Rating: 8 A @ 120/240 VAC res., 30 VDC. 1/2 hp @ 120 VAC and 1/4 hp @ 240 VAC ind.
  • Power Requirements: 12 to 240 VAC/DC.
  • Power Consumption: 2.8 Watts max.
  • Electric Connections: 1/2" NPT conduit opening, screw termination and removable terminal block.
  • Process Connection: See Catalog Page.
  • Mounting Orientation: Vertical or horizontal.
  • Set Point Adjustment: Trips when product touches probe. Cut or extend probe to length of desired trip point. Can be cut as short a 1" and can be extended by welding on to probe. (Minimum length will be effected by material being sensed.)
  • Response Time: 0.2 s.
  • Time Delay: Adjustable, 0 to 60 s.
  • Spark/Static Protection: 10 MEG Ohm dissipation resistance with spark gap. Surge current to 100A max.
  • Sensitivity: 8 selectable settings, 1, 2, 4, 6, 8, 10, 14, 20 pF (at 30 pF nominal free capacitance).
  • Agency Approvals: cULus.


The Series CLS2 Capacitive Level Switch is a capacitive technology level switch which can be used for liquids, powders and bulk materials. It is offered with PVDF and 316 SS wetted material, weatherproof enclosure, DPDT output and a variety of process connections.  Applications:  

  • Sewage and wastewater
  • Food and beverage
  • Pharmaceuticals
  • Sumps
  • Boilers and steam generators
  • Caustics and acids
  • Reservoirs

*found in some CWI railroad sand systems for dry bulk sand level detection.