Protec Liquid Level Controls

Protec conductivity level controllers use the principle of conducting a small AC current between probes in contact with solution.  If the current circuit is completed, the solution must be at a level above two of the probes.  To add   another set point, an additional probe is used.

Protec liquid level controls are used to monitor the solution level within tanks and provide relay signals when condition points are reached.  Commonly used to add additional solution to a tank to make up for evaporation or as a safety shutoff for a heater if the solution is to fall below a critical level. These controllers are adaptable to monitoring and controlling numerous levels within a tank with the addition of multiple probes.

A two probe level controller is required as a safety shutoff for electric immersion heaters.

  • Conductivity style devices operate in most electrically conductive solutions by passing a small AC current between probes. Not for DI water service.
  • Two probe units for single level control.
  • Multiple probe units for two point control and refill/pump down capabilities.
  • Ideal for plating systems, waste treatment tanks and leak detection.
  • Capacitive style for non contact level control are available. Mount outside of non metallic tanks with thickness up to .984" (25 mm). (not shown)
  • Remote probe assembly with 10 foot flexible lead. Quick connect plug for easy connection to remote mounted circuitry.
  • Longer, flexible cord on probes available.
  • Stainless steel, titanium, Hastelloy C or graphite probes covered with fluoropolymer fluorocarbon resin.
  • NEMA 4X equivalent, flame retardant plastic case.
  • Field selectable 120/208-240 VAC, 60 Hz, 5 watts.
  • 10 amp, 240 VAC SPDT switch capacity.
  • 70,000 ohm maximum solution resistance.
  • Longer probe lengths available.
  • Operating ambient temperature 0 deg. to 120 deg. F.
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Four or more probe models are also available to incorporate high level alarms or other devices.  Contact us for details. Return to Protec Index