| 摘要 |
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.
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