Principle The "double temperature method" is used to obtain the relative humidity at a certain temperature by controlling the temperature of the water under the set point, that is, the dew point temperature of the gas. This method is to verify that the fixed temperature and the fixed dew point temperature Can get a fixed relative humidity.
The portion of the gas flowing back from the work area passes through the mist zone, where the temperature of the mist is automatically adjusted to the dew point of the set point, and the temperature of the gas is cooled to the dew point temperature and substantially saturated after passing through the mist. The saturated gas is removed by the water droplet stopper and the liquid water droplets are removed and mixed with another part of the bypass air stream which is returned to the reactor. The heated air is heated to the working area by the electric heater.
Using the above method, you can achieve accurate temperature and humidity control .PGC system does not strictly distinguish between humidification and dehumidification process, it is always set the dew point temperature and reheat.If the gas has more moisture than the set point, Too much moisture will be condensed in the lower temperature water mist, the gas is dehumidified. On the contrary, if the moisture in the gas is lower than the set point, the water will evaporate from the water mist and the gas will get humidified. Measurement of signal feedback by high precision temperature and humidity transmitter.