Device for measuring the condensation temperature of a gas or a vapor
AssigneeSolvay & Cie
InventorRene Nisolle
Life of this patent
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Abstract
A system for measuring the condensation temperature of a vapor or a gas composed of a capacitor whose plates are separated to define a space for receiving such vapor or gas, means for cooling, and measuring the temperature of the surface of one of the plates which bounds the space, and means for measuring the capacitance of the capacitor and for determining the temperature of the plate surface when such capacitance experiences a predetermined variation corresponding to the temperature at which condensate forms on such surface.
Claims6
Device for measuring the condensation temperature of an organic or inorganic vapor or gas, comprising two electrically conductive plates insulated electrically from one another and spatially separated from one another by a space free of any solid material and arranged to contain such gas or vapor, one of said plates presenting a surface on which a condensate of such gas or vapor is deposited under appropriate conditions;
- cooling means operatively associated for cooling said surface through a temperature range containing the temperature at which such gas or vapor will begin to condense;
- a temperature measuring device positioned as close as possible to said surface for providing an indication of the temperature of said surface;
- said insulated plates forming an electric capacitor of a given capacitance when the space which separates them is occupied by a vapor or gas and of a markedly different capacitance when a condensate is deposited on said one of said plates;
- and a device for measuring the capacitance of said capacitor and detecting a predetermined variation in this capacitance, the temperature to be measured being that given by said temperature measuring device at the instant when this variation is detected.
Dependencies are inferred from the claim text.