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Control of batching and curing processes

  • US 5,749,986 A
  • Filed: 08/01/1995
  • Issued: 05/12/1998
  • Est. Priority Date: 02/01/1994
  • Status: Expired due to Term
First Claim
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1. A method for controlling a batching process wherein a first substance is placed in a mixing container and a second substance is added for combining with the first substance to produce a combined substance, said method comprising:

  • employing a pair of electrodes placed in contact with the combined substance, the electrodes being not electrochemically dissimilar;

    monitoring voltage between the electrodes produced by the combined substance while the second substance is being added, without applying any external voltage; and

    recognizing that a sufficient quantity of the second substance has been added when the monitored voltage crosses a predetermined threshold voltage.

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