LevelGuard Tank Monitor 300 Kit

Tank Monitor 300 Kit

Fluid level monitoring system for plastic holding tanks

The LevelGuard Tank Monitor 300 provides accurate, early warning for critical holding tank fluid levels. With digital certainty, the LevelGuard Tank Monitor 300 is the reliable choice for monitoring fluid levels in 3 tanks. This tank monitoring system is suitable for any applications that carry water-based solution: industrial or farm liquids, bulk beverage or dairy, fresh or waste water, sewage, ground water, coolants, pesticides or fertilizers.


  • Four sensors per tank with an LED display panel lights shine progressively when sensors detect liquid at each level: Empty, 1/4, 1/2, 3/4 and Full
  • Tanks can be any volume
  • Clean, flush-mounted display panel is compact and organized
  • Touch interface to display tank level readings
  • Reads on-demand; very low current draw
  • No mechanical float switches or moving parts to jam, fail, or wear out
  • No probes to get clogged or coated
  • No tank intrusion required
  • Sensors attach to exterior of tank with aggressive adhesive (unaffected by moisture or vibration)
  • 1-year warranty 

How it works:

Field-Effect sensors (encased in rugged plastic) create an invisible, low-power electric field that detects fluid levels. When a conductive material, like water, enters the LevelGuard "e-field", the sensors detect its presence and trigger the alarm. Tested to millions of cycles in fluid control applications, LevelGuard  performs reliably under extreme conditions of temperature, humidity, UV, vibration and salt water corrosion and is a robust solution for challenging environments. 


  • Voltage rating: 10.5 to 14.4 VDC
  • Sensor draws <0.001 amp when no key pressed. Max current draw is 1 amp
  • LevelGuard Tank Monitor 300 can work with two separate display panels via an additional CAT-5 Ethernet cable (purchase panel and cable separately) 
  • CAUTION: Note for use with metal tanks. Can be used with fiberglass tanks if surface is smoothed so sensors have full contact

Kit Contents:

  • LevelGuard Tank Monitor display panel with LEDs 
  • Tank Monitor interface module for modular connection to sensors
  • Wiring harness with 4 daisy-chained, adhesive-backed  "field effect" sensors and 15" (4.6 meter)  wire leads (can be extended by customer)
  • 8-pin CAT-5 Ethernet cable, 20' (6 meters)