Multiple parameter temperature, dissolved gas and atmospheric pr

Details Multiple parameter temperature, dissolved gas and atmospheric pr Multiple parameter temperature, dissolved gas and atmospheric pr

1985-09-27

1987-05-05

Kreitman, Stephen A.

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 710

Patent

active

046622101

ABSTRACT:
Single, self-contained, multiple parameter device (10) and method which includes a probe (12) having a water or liquid exposed sensing compartment (61) wherein a permeable tubular membrane (46) transmits total dissolved gas pressure to a sensor (96) in a waterproof compartment. A temperature sensor (92) measures the temperature of the monitored water. Both of the sensed parameters are converted to electrical signals and routed by cable (14) to a control housing (12) and therein combined and analyzed by appropriate circuitry (100, 102, 104, 106) and with barometric pressure signals processed through a selector switch (106) to be visually read out to a display (110). The instrument (10) allows at least for selective read out and display (110) of total dissolved gas pressure, barometric pressure, temperature, percent saturation and difference between total dissolved gas and barometric pressures. Optionally, the measuring of the partial pressures of oxygen and by subtraction, approximate nitrogen can also be added to the instrument's capability.

REFERENCES:
patent: 3673864 (1972-07-01), Cubberly, Jr.
patent: 3871228 (1975-03-01), Weiss
patent: 4366700 (1983-01-01), Bouck
"An Automatic Dissolved Oxygen System", Kent Tech. Rev. (GB), No. 15, pp. 17-19, Feb. 1976.

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