I work in the field of membrane separation of gases. In the present study, it is necessary to moisten the gas stream that is under pressure of 2-4 bar, this stream then will be direct to the membrane modulus. A gas flow impregnator(humidifier) will be used for this purpose. According to my research, there are two ways to measure the saturation percentage of pressurized gas flow:
First, use a sensor with the ability to measure moisture under pressure, that is using directly in the saturator. in this case costs a lot to buy a sensor.
Second, the Output current from the impregnator is divided into low pressure and high pressure streams. The low pressure current is then directed to a conventional hygrometer sensor (without the ability to be under pressure) and the high pressure current is directed to the membrane module. In this case, can the percentage of current saturation be measured correctly? In this case, how can the effect of pressure on the amount of moisture be considered?
Does anyone have experience in this field? may anyone guide me on this?