Means and method of sampling flow related variables from a waterway in an accurate manner using a programmable calculator

Rand E. Eads; Mark R. Boolootian; Steven C. [Inventors] Hankin

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Means and method of sampling flow related variables from a waterway in an accurate manner using a programmable calculator

Informally Refereed

Authors:

Rand E. Eads, Mark R. Boolootian, Steven C. [Inventors] Hankin

Year:

1987

Type:

Miscellaneous Publication

Station:

Pacific Southwest Research Station

Source:

U.S. Patent 4,660,422. 28 April 1987 9 p. Int. Cl. G01N 1/44.

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Download (PDF 153 KB): https://research.fs.usda.gov/download/treesearch/7759.pdf

Abstract

Abstract - A programmable calculator is connected to a pumping sampler by an interface circuit board. The calculator has a sediment sampling program stored therein and includes a timer to periodically wake up the calculator. Sediment collection is controlled by a Selection At List Time (SALT) scheme in which the probability of taking a sample is proportional to its estimated contribution to total sediment discharge, or according to accumulated predicted sediment weight. Stage height is also measured and is recorded according to a set scheme.

Keywords

PSW4351, Caspar Creek, programmable calculator, pumping sampler, sediment, SALT

Citation

Eads, Rand E.; Boolootian, Mark R.; Hankin, Steven C. [Inventors] 1987. Means and method of sampling flow related variables from a waterway in an accurate manner using a programmable calculator. U.S. Patent 4,660,422. 28 April 1987 9 p. Int. Cl. G01N 1/44.