top of page

LLF/D: Liquid Level Control Relay  LLF  LLD


• Conductive or Float

  Switch Inputs


• Fill or Drain Operation


• 5K to 100KΩ Sensitivity,



• AC Probe Voltage


• 10 Amp Contacts


• Noise Filter


• Nusance Delay


• Input Status Indicators


Fill of Drain Operation (Fill:Pump Up - Drain:Pump Down)

The LLF/D accepts inputs that are either conductivity (resistance) and/or float switches. Internal logic circuitry controls the appropriate relay latching and unlatching for Fill or Drain operations. Three diagnostic LEDs indicate the status of the two inputs and output relay state. Probe sensitivity is adjustable to control effects of liquid wiskers from the level probes.




Input Supply Voltage: 12, 24. 120 or 240 VAC, 10%

Frequency: 50/60Hz

Power Consumption: 2VA

Sensitivity Range: 5K to 100KΩ

Pick-Up/Drop-Out Delay: .5 Sec. Fixed

Max. Probe Voltage: 16 Volts AC

Output Rating @ 25°C:

     10 Amps @ 120VAC 5 Amps @ 250VAC, 30VDC

     300W (D.C.), 1600VA (A.C.) Max. switching power (resistive)

     100,000 Full Load Electrical Cycles

     20,000,000 Mechanical Cycles


     2 Status LEDs: Inputs closed

     1 Relay LED: Relay Energized



Mounting: Plug -In

Termination: 8 Pin Octal

Packaging: Dust Cover

Weight: 9 Oz.


Ambient Temperatures

Operating: 0°C to 40°C

Storage: -40°C to 85°C


bottom of page