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Detector system for monitoring a fluid containing tube

  • US 4,797,655 A
  • Filed: 03/23/1987
  • Issued: 01/10/1989
  • Est. Priority Date: 03/24/1986
  • Status: Expired due to Term
First Claim
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1. Apparatus for monitoring a fluid flow system including a tube through which fluid is intended to flow comprising mounting means for mounting said tube at a predetermined location, transmitting means for transmitting a signal through said predetermined location, receiver means for receiving said signal after it has passed through said predetermined location, and sensing means comprising comparator means for comparing said signal received by said receiver means with a first predetermined reference signal for determining whether or not said tube is mounted at said predetermined location and with a second predetermined reference signal for determining whether or not said fluid is contained within said tube, whereby both said determinations can be made on the basis of the same signal received by said receiver means.

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