Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1975-03-31
1976-04-13
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
324 29, G01N 2742
Patent
active
039502376
ABSTRACT:
An electric quantity titrating device is disclosed of the type comprising electrolytic electrodes immersed in a solution to be analyzed for passing electrolytic current, detecting electrodes immersed in the solution, detecting apparatus connected across the detecting electrodes for producing a voltage signal which is used to continuously supply the electrolytic current to the electrolytic electrodes and integrating apparatus for integrating the electrolytic current for measuring the electric quantity required for the analysis until an end point is reached. A current controlling apparatus is provided in this system which includes a device for detecting the deviation of the voltage signal from a preset value at the end point, an amplifier for amplifying the deviation signal, and a current converter for converting the amplifed current into output current which is applied to the electrolytic electrodes. The integrating apparatus includes a device for converting the output from the current converter into a pulse train, and a counter for counting the pulse train.
REFERENCES:
patent: 2928774 (1960-03-01), Leisey
patent: 2928775 (1960-03-01), Leisey
patent: 2928782 (1960-03-01), Leisey
patent: 3305468 (1967-02-01), Liesch
patent: 3427238 (1969-02-01), Myers et al.
patent: 3441490 (1969-04-01), Johansson
patent: 3647668 (1972-03-01), Lindblad et al.
Microcoulometric Titrating System, MCTS Data Sheet AI-II, p. 10, Dohrmann Inst. Co., Dec. 24, 1969.
Arawa Kiyoshi
Ishikawa Seiji
Kaplan G. L.
Mitsubishi Kasei Kogyo Kabushiki Kaisha
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