Fluid flow measurement system

Boots – shoes – and leggings

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Details

356315, 364573, 364558, 431126, G06F 1532, G01F 136, G01J 342, G01N 3112

Patent

active

042505534

ABSTRACT:
An oxidant flow conduit having a restriction and branching downstream of the restriction to provide a primary flow conduit for supplying oxidant to a nebulizer and an auxiliary flow conduit having an adjustable valve for supplying oxidant to a mixing chamber is provided. A differential pressure transducer measures the pressure drop across the restriction to provide an output signal. A primary fuel conduit is provided having a pair of restrictions with an adjustable valve for supplying fuel to the mixing chamber. A boost conduit having a restriction is connected to the primary fuel conduit and between the restrictions providing for supplementing the fuel to the mixing chamber when a different fuel mixture is used. A differential pressure transducer measures the pressure drop across the pair of restrictions to provide an output signal. A square root linearization operation is performed on each signal in a microprocessor and modified output signals drive respective fuel and oxidant digital displays. Consequently, increased and substantially identical sensitivity to adjustment and attainment of normal flame conditions are achieved when switching between boosted and non-boosted fuel flow.

REFERENCES:
patent: 2847899 (1958-08-01), Walsh
patent: 3516771 (1970-06-01), Rendina
patent: 3525476 (1970-08-01), Boling et al.
patent: 3583844 (1971-06-01), Smith, Jr.
patent: 3586441 (1971-06-01), Smith et al.
patent: 3689225 (1972-09-01), White
patent: 3739159 (1973-06-01), Nalley
patent: 3752393 (1973-08-01), Moseley
patent: 3806250 (1974-04-01), George
patent: 3875955 (1975-04-01), Gallatin et al.
patent: 4125225 (1978-11-01), Venghiattis
Barnett-"Acid Interferences in Atomic Absorption Spectrometry"-Analytical Chemistry-vol. 44, No. 4, Apr. 1972, pp. 695-698.

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