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PRODUCT LEVEL MONITORING IN A CHEMICAL DISPENSING SYSTEM

  • US 20150233753A1
  • Filed: 04/30/2015
  • Published: 08/20/2015
  • Est. Priority Date: 06/21/2011
  • Status: Abandoned Application
First Claim
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1. A monitoring unit for monitoring multiple probes in a chemical dispensing system, the monitoring unit comprising:

  • a detection circuit including an input and an output, the detection circuit configured to output a first signal in response to detecting a low impedance at the input and output a second signal in response to detecting a high impedance at the input;

    a switch matrix including a plurality of electrical input ports, and an electrical output port coupled to the input of the detection circuit; and

    a processor operatively coupled to the switch matrix and configured to cause the switch matrix to selectively couple the electrical input ports to the electrical output port.

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