Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Patent
1981-02-06
1983-11-22
Ciarlante, Anthony V.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
G01N 1302
Patent
active
044161484
ABSTRACT:
Apparatus for measuring the surface tension of a liquid contained in a flow-through pressure vessel (60) includes a pair of tubes (50,51) having small and large orifices positioned below the surface of the liquid. A source (10) provides gas through a pressure regulator (15) and a flow regulator (30) to the tubes. The bubble rate from the orifices is controlled by needle valves (40,41) and is made independent of the pressure in the vessel by the flow regulator (30). Differential pressure transducer (70) measures the pressure in the tubes as an indication of surface tension. Check valves (72,73) protect the transducer, and a thermometer (65) measures liquid temperature.
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patent: 3881344 (1975-05-01), Jobe
Padday, J. F., Surface Tension (Parts I & II) in Surface and Colloid Science, vol. 1, pp. 39-149, 1969.
Sudgen, S., Determ. of Surface Tension from Max. Press. in Bubbles in J. Chem. Soc., vol. 121, pp. 859-867, 1922 and vol. 123, pp. 27-31, 1923.
Cuny et al., Bubble-Pressure Method of Surface Tension, NASA TT S-13, 937, pp. 1-28, 1956.
Schork et al., Monit. Emul. Polym. Reactor Dyn., Presented at Meeting of Amer. Chem. Soc., 1980.
Schwaneke et al., Improv. Max.-Bubble-Press. for Surface Tension, Bureau of Mines Report No. RI-7340, pp. 1-9, 1980.
Razouk, R., App. for Determ. Surface Tension, NASA Tech Briefs, pp. 508-509, 1977.
Brodsky Eric L.
Gibbons Everett E.
Janule Victor P.
Klus John P.
Ciarlante Anthony V.
Madison-Kipp Corporation
Roskos Joseph W.
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