Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1977-10-05
1979-02-06
Tokar, M.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
204273, G01N 2742
Patent
active
041386388
ABSTRACT:
An apparatus for examining liquid quality, for example, water quality, in which a sensing element is placed in contact with the test water, and which comprises sensing means including a sensing element, means for generating an air bubble in the vicinity of the sensing element and for producing a turbulent flow due to the substantially disordered motion based on the floating power of the air bubble in the vicinity of a sensing surface of the sensing element.
REFERENCES:
patent: 3039951 (1962-06-01), Clenard et al.
patent: 3282823 (1966-11-01), Richards
patent: 3412004 (1968-11-01), Winters
patent: 3630860 (1971-12-01), Fox
patent: 3647646 (1972-03-01), Tucker et al.
patent: 3959112 (1976-05-01), Arend
Amano Ken-ichi
Furuya Noboru
Kabushiki Kaisha Meidensha
Tokar M.
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