LS2100 Loop-Powered Level Sensor

The LS2100 can measure virtually any liquid or dry bulk solid. It can even sense the difference between oil and water. The proprietary radio frequency (RF) circuit has a wide tuning range and exceptional temperature stability. When the probe is installed, it is calibrated in the absence of material touching the probe. When the desired product comes into contact with the probe, the milli-amp signal on the 24 VDC Loop changes to indicate level.

The 2-Wire design makes the LS2100 perfect for use with PLC's and DCS systems. Often, existing instrument wire pairs can be used.

The standard probe is made of a solid 316 stainless steel rod, ¾" NPT process connection and the standard insulator is made of Teflon. The standard seals are double Viton "O" rings on the probe and insulator. All the electronics are housed in a cast aluminum explosion-proof enclosure.

The solid stainless steel rod is available in a variety of lengths and is suited for liquids or bulk solids. These probes can be coated with Halar in lengths up to 72 inches.

A blind-end probe option is also available for applications where a wet material build-up may foul a horizontally mounted probe. The blind-end unit has no visible probe because the insulating material completely covers the sensing probe.

All the necessary calibration indicators are on-board so all you need to calibrate the LS2100 is a small screwdriver. Fail-safe electronics provide peace of mind. The modular electronics make trouble shooting and repair a snap. The entire unit is backed by our two year warranty, 60 day money back guarantee. Flanged process connections and other materials of construction are available. Please consult factory.

Product Features:

  • Solid state, no moving parts
  • Simple installation and calibration
  • Explosion proof housing standard
  • Fail safe electronics


  • High or low level alarms
  • Sump control
  • Oil/water interface detection
  • Dry pump protection


  • Waste/Wastewater
  • Acids/Caustics
  • Chemicals/Oils
  • Slurries

Dry Solids:

  • Flour/Grains
  • Powders
  • Plastics
  • Sand/Cement


Electrical Power:

Power: Loop Powered 16-32 VDC Output: Normal – 8mA Alarm -16mA Output is reversible RF Frequency: Approx. 1.3 MHz


Temperature:Probe -30C to 400F Electronics -30C to 180F

Pressure: 300 psi @ 75F

Hazardous Area: Housing CSA and UL approved for Class I, Div. 1, Groups C & D;Class II, Groups E,F & G; Class III NEMA 4

 Ordering Information

Standard Probe Style
MODELSupply Voltage"S” – 316SS Probe
“H”- Halar Probe
Probe length in inches
LS2100 24VDC S 10"

Blind-end Probe Style:
MODELSupply Voltage"T"-TeflonProbe length in inches
LS2100 24VDC T 4"(standard – call for other lengths )


LS2100 2 Wire Level Switch

loop powered level switchliquid level switch