×

Method and apparatus for ultrasonic material level measurement

  • US 4,000,650 A
  • Filed: 03/20/1975
  • Issued: 01/04/1977
  • Est. Priority Date: 03/20/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. In a control system for use in monitoring the level of material in a storage tank, the combination comprising,transducer means directing ultrasonic pulses toward and receiving echo response pulses reflected from the upper surface of said material,means operatively connected to said transducer means to sample said echo response pulses at preselected intervals which are a function of distance,means converting each of said sampled response pulses to digital signals having a numerical value indicative of the intensity of each said echo pulse relative to one another,means integrating said sampled and digitizesd response pulses from successively transmitted pulses over a preselected pulse sequence according to apparent distance of said transducer means from said material surface,means storing said integrated response pulses serially according to apparent distance, andmeans monitoring said integrated pulses to provide an indication of actual distance, which is a function of material level, upon completion of said pulse sequence.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×