Knowledge

Temperature refers to a method of measuring the energy level of a substance at a certain time. The temperature range is based on the freezing point and boiling point of water.

Pressure dew point means that a gas with a certain pressure is cooled to a certain temperature, and the unsaturated water vapor contained in it becomes saturated water vapor.

PPM is a symbol for the content of trace substances in a mixture, referring to parts per million or parts per million (parts weight ratio PPMw and volume ratio PPMv). (Reference ra