Apparatus for accurately measuring the water content of gases

Details Apparatus for accurately measuring the water content of gases Apparatus for accurately measuring the water content of gases

1992-10-27

1994-09-06

McMahon, Timothy M.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

7333502, 7333503, 7333504, 73 2902, 20415322, 204430, G01W 111

Patent

active

053437357

ABSTRACT:
An apparatus for accurately measuring the water content of a moist gas containing less than 50 parts per million (ppm) of water comprises an isothermal heat-sink (14), a radiator (20), a Peltier heater-cooler (24) thermally arranged between the isothermal heat-sink (14) and the radiator (20). The heater-cooler (24) is transferring heat from the isothermal heat-sink (14) to the radiator (20) and vice versa. A phosphoric acid moisture cell (32) is in thermal contact with the isothermal heat-sink (14). Upon passing the moist gas through the cell (32) the amount of moisture in the moist gas is measured as variation of electrical current throughout the cell.

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Melcor-Frigichip.RTM. Minature Ceramic Modules, Series FC 47 pages.

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