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Method of overfill probe identification and control

  • US 5,966,311 A
  • Filed: 06/22/1998
  • Issued: 10/12/1999
  • Est. Priority Date: 06/12/1995
  • Status: Expired due to Term
First Claim
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1. A method of controlling a fluid transfer control apparatus for transferring fluid from a fluid source to a receiving container in which an overfill probe detects when fluid in the container reaches a predetermined level and in which the overfill probe is one of a five-wire type probe or a two-wire type probe, the method comprising:

  • applying a five-wire test signal to the probe;

    detecting any five-wire return signal received within a predetermined time limit;

    if a five-wire return signal is detected, configuring the fluid transfer control apparatus for five-wire overfill probe operation; and

    if a five-wire return signal is not detected, testing the probe for the presence of a valid two-wire probe signal and configuring the fluid transfer control apparatus for two-wire overfill probe operation if a valid two-wire signal is detected.

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