Pacific Southwest Research Station

Publication Information

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

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

Date: 1987

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

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.

Key Words: PSW4351, Caspar Creek, programmable calculator, pumping sampler, sediment, SALT

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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..