Measurement Science and Technology · 1994 · 19 citations · 3 references
EngineeringMining EngineeringInstrumentationMetrologyRadiation DetectionFlow MeasurementFlow MetrologyGamma-ray DetectorsMeasurement System AnalysisVentilation InstrumentationAttenuation EstimationAttenuation MeasurementGamma-ray AttenuationMeasurement AccuracyPneumatic Conveyance SystemsPneumatic ConveyingPneumatic Conveying SystemsRadiometric Analysis
The application of gamma -ray attenuation methods to non-intrusive measurement of the solids content in pneumatic flow lines is discussed. An instrument employing a broad single-beam interrogation geometry and a single-element detector with uniform sensitivity profile is described. It is designed primarily for metering pulverized coal, where the solids concentration is typically very low, and also often highly inhomogeneous. A detailed analysis of the factors affecting measurement accuracy is presented, together with results obtained from laboratory tests.
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