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Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

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Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

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Title:

Field test of X-ray sediment-concentration gage

Additional title:

ASCE -- Proc (J Hydraulics Div)

Contributors:

Murphree, C.E. (author) / Bolton, G.C. (author) / McHenry, J.R. (author) / Parsons, D.A. (author)

Published in:

American Society of Civil Engineers Proceedings, Journal of the Hydraulics Division ; 94

Publication date:

1968

Size:

14 pages

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

© Metadata Copyright Elsevier B. V. All rights reserved.

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