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    Author(s): Rand E. Eads; Mark R. Boolootian; Steven C. [Inventors] Hankin
    Date: 1987
    Source: U.S. Patent 4,660,422. 28 April 1987 9 p. Int. Cl. G01N 1/44.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (150 KB)

    Description

    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.

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    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.

    Keywords

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

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