Catalsimeter with time measuring circuitry for determining react

Details Catalsimeter with time measuring circuitry for determining react Catalsimeter with time measuring circuitry for determining react

1975-07-15

1977-03-29

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250564, 250575, 250573, G01D 2104, G01N 2126, G01N 2128

Patent

active

040151212

ABSTRACT:
This invention relates to an apparatus and a method for determining the concentration of a first reactant in a medium. A disc is saturated with a solution containing the first reactant and immersed into a second reactant fluid. A chemical reaction occurs between the first and second reactants to produce a gas which is trapped by the disc. The disc is buoyed to the surface of the second reactant fluid by the gas produced. The process is electronically timed using photocells to start and stop an electronic clock and a digital display displays the time elapsed in tenths of seconds.

REFERENCES:
patent: 1950273 (1934-03-01), Speakman
patent: 2888573 (1959-05-01), Kavanagh
patent: 3590256 (1971-06-01), Neeff
patent: 3764479 (1973-10-01), Bergeron et al.
patent: 3843265 (1974-10-01), Egli et al.

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