Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Patent
1988-09-29
1989-10-17
Chapman, John
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
73 53, G01N 1302
Patent
active
048744263
ABSTRACT:
A surface tensiometer including a measurement container having an upper edge opened horizontally and communicated with an end of a connecting pipe, an inlet container having an upper edge opened at a position higher than the upper edge of the measurement container and communicated with the opposite end of the connecting pipe, and a measuring device. The measuring device is operable to measure a height of a highest position of a convex liquid surface statically formed in an equilibrium between an upward force, exerted by a pressure difference due to a height difference between a liquid surface of said measurement container with lthe iquid surface being raised from the opened upper edge of the measurement container after the liquid introduced from the inlet container reaches and overflows from the measurement container and a liquid surface of the inlet container and a downward force exerted by a surface tension of the raised liquid surface per se. There is also disclosed a concentration control device for controlling a concentration of liquid constant by utilizing the detection of the convex liquid surface by the surface tensiometer.
REFERENCES:
patent: 3848618 (1974-11-01), Royse
Chapman John
Greigg Edwin E.
Simons Michele
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