Hygrometer

Details Hygrometer Hygrometer

1976-01-19

1977-06-14

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73 29, G01N 2556

Patent

active

040289427

ABSTRACT:
A sensing device is used to measure absolute humidity of a sample stream of gas by measuring the mass flow rate of the sample, adding or subtracting a known amount of heat energy (per unit mass of the sample stream) to the heat energy of the sample and measuring the temperature of the sample before and after the heat energy of the sample is changed. These measured parameters are then used to calculate the specific heat of the sample, which in turn can be used to calculate the water vapor content of the gas.

REFERENCES:
patent: 3216257 (1965-11-01), Ford
patent: 3265301 (1966-08-01), Amdur et al.
patent: 3532270 (1970-10-01), Schoen, Jr.
patent: 3661724 (1972-05-01), Strickler
patent: 3898882 (1975-08-01), Prokopius

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