Development of a Conductance Sensor for Measuring Solids Concentration in Large Diameter Slurry Pipelines
An instrument has been developed which measures the solids concentration in slurry pipelines ranging in diameter from 5-150 cm. The operating principle is based on conductance, and in contrast to the gamma densitometer, the instrument does not require a nuclear radiation source. The instrument operates online, is non-intrusive, and provides real-time output. The instrument measures local concentration around the pipe periphery, and the local values are integrated to obtain the area-average concentration. A graphical display shows the variation of concentration from the top of the pipe to the bottom as well as the area-average concentration history. The instrument has been extensively tested in a slurry transport facility at the University of Florida as well as on-line at the Swift Creek phosphate mine in the state of Florida. Excellent performance of the instrument is observed over a wide range of operating conditions.
KeywordsSolid Concentration Electrode Pair Conductance Sensor Slurry Flow Slurry Concentration
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- Beck MS, Calvert G, Hobson JH, Lee KT, and Mendies PJ (1971) Total Volume and Component Flow Measurement in Industrial Slurries and Suspension Using Correlation Techniques. Trans. Inst, Measurement and Control 4:133–138.Google Scholar
- Lee KT, Beck M S, and McKeown KJ (1974) An On-Line Instrument for Measuring Small Quantities of Dispersed Non-Conducting Liquid in a Conducting Liquid. Trans. Inst., Measurement and Control 7:341–345.Google Scholar
- Ong KH and Beck MS (1975) Slurry Flow Velocity, Concentration and Particle Size Measurement Using Flow Noise and Correlation Techniques. Trans. Inst., Measurement and Control 8: 453–463.Google Scholar