Apparatus for measuring water-vapor partial pressure

Details Apparatus for measuring water-vapor partial pressure Apparatus for measuring water-vapor partial pressure

1991-10-23

1993-03-23

Williams, Hezron E.

Measuring and testing

Gas analysis

By thermal property

73 2902, 7333502, 7333505, G01N 3100

Patent

active

051953587

ABSTRACT:
An apparatus (1) for measuring the water-vapor partial pressure in mixtures of water vapor and gases has an electrolytic cell (18), a measuring sensor (11) determining the temperature of the electrolyte (20), and a heater (23). The cell (18) is subjected to an alternating voltage bringing about no notable heating. The alternating current induced by the alternating voltage controls the heating output of the heater (23). The measuring sensor (11) is arranged in direct thermal contact with the electrolyte (20). The heater (23) is geometrically so extensive in comparison with the cell (18) that a homogeneous radiation field is produced over the entire cell (18). The heater (23) is arranged in relation to a guide for the mixture on the one hand and the cell (18) on the other hand in such a way that the mixture is essentially heated by convection and the electrolyte (20) is essentially heated by radiation.

REFERENCES:
patent: 2494628 (1950-01-01), Oberding
patent: 2756295 (1956-07-01), Schluchter
patent: 3516282 (1970-06-01), Leach et al.

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