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Your Source for Process Measurement & Control

Radio Frequency Level Switch - Discontinued

LV750 Series

 | LV750 Series

See All Models Below

1 year warranty
  • Versatile, for Liquids or Solids with a Dielectric Greater than 8
  • Maintenance-Free Convenience
  • Rugged Potted Electronics Construction Defies Vibration
  • NEMA-4 Housing
  • No Moving Parts
  • Adjustable Time Delay
  • Hi or Lo Failsafe
  • Low Cost
  • Tip Sensitive


The LV750 series has been discontinued. Please see the LVCN6000/7000 Series as a possible alternative or contact our Flow Engineering department.

The rugged construction and low cost of the LV750 Series level switch makes it a practical choice in a wide variety of applications for both liquids and solids, which may be electrically conductive or nonconductive. As a radio frequency switch, it can tolerate reasonable amounts of sticky build-up and still function flawlessly. For conductive liquids and materials with a high dielectric constant (greater than 30) that additionally have a tendency to "bridge" between the probe and container wall, a PTFE coated probe should be used. For chemical compatibility considerations, also request the ¾" nipple.

Power: 95 to 130 Vac, (std) or 190 to 260 Vac (opt) 50 to 60 Hz, 2 W, or 9 to 35 Vdc @ 100 mA (optional)
Relay: DPDT (2 form "C") dry contacts rated for 5 A Resistive @ 120 Vac or 28 Vdc Operating Temperature/Pressure
Electronics: -40 to 85°C (-40 to 185°F)
Probes: 305 mm (12") min length (standard) to 3.0 m (120") (special)
Uncoated, Acetal Bushing: -40 to 85°C (-40 to 185°F), 103 bar (1500 psig) @ 25°C (77°F), 0 psig @ 85°C (185°F)
Uncoated Bushing: -40 to 232°C (-40 to 450°F), 103 bar (1500 psig) @ 25°C (77°F), 0 psig @ 232°C (450°F)
PTFE-Coated (with 316 SS nipple): -40 to 232°C (-40 to 450°F), 103 bar (1500 psig) @ 25°C (77°F), 0 psig @ 232°C (450°F)
PTFE-Coated (with ¾" nipple): -40 to 85°C (-40 to 185°F), 6.9 bar (100 psig) @ 25°C (77°F), 0 psig @ 232°C (450°F)
Minimum Dielectric: 10.0 for standard probe
Wetted Parts: 316 SS rod, 316 SS nipple, Acetal (or PTFE)
Enclosure: Cast aluminum, PVC optional
Time Delay: 0, 5, 10, 15 sec, selectable
Size: 419 x 155 x 46 mm (16.5 x 6.1 x 1.8")
Weight: 0.91 kg (2 lb)
All dollar amounts on this site are shown in Canadian currency. Note: Comes complete with operator's manual.

For 240VAC power option, add suffix "-240V" to the model number, no additional cost.

For additional probe lengths over 12 inches, add suffix "-(length in inches)" to model number, add $18 per foot on the LV751 and LV752. Add $34 per foot on the LV753A and LV754.