Schematic working principle of the LLC-D3

The sensor in the stand-pipe operates according to the capacitive measuring principle being unaffected by pressure, foam, splashing and coating. As the level rises and material begins to cover the sensing element, the capacitance within the circuit between the probe and the media (conductive applications) or the probe and the vessel wall (insulating applications) increases. The LLC-D3 Liquid level controller input-circuit detects this change and displays the level status on a good visible 4×20 back-light LCD-display and generates relay actuations and a proportional 4-20 mA output signal. Senses pure liquid only!

APPLICATIONS:

  • High pressure liquid level control
  • Low pressure liquid level control
  • Modulating liquid level / defrost
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